Develop Reference

Android Saved Instance State Not Saving (Dual Activity)

Hi my MainActivity and MainActivity2 are supposed to be saving the instance state, but when I rotate the device into landscape it does not save the time, the timer restarts. My app is a log in verication that displays time stamps when you click the verify button, right now I am trying to save the timer when I rotate the device, but it is not saving I will include the code below thanks. Update when I comment out onRestoreInstanceState and run the program it says that I am getting a NumberFormatException in onSaveInstanceState not sure.
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.security_token_app, PID: 15284
java.lang.NumberFormatException: For input string: "seconds remaining: 50"
at java.lang.Long.parseLong(Long.java:594)
at java.lang.Long.parseLong(Long.java:636)
at com.example.security_token_app.MainActivity.onSaveInstanceState(MainActivity.java:117)
at android.app.Activity.performSaveInstanceState(Activity.java:1609)
at android.app.Instrumentation.callActivityOnSaveInstanceState(Instrumentation.java:1447)
at android.app.ActivityThread.callActivityOnSaveInstanceState(ActivityThread.java:5071)
at android.app.ActivityThread.callActivityOnStop(ActivityThread.java:4400)
at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:4364)
at android.app.ActivityThread.handleStopActivity(ActivityThread.java:4439)
at android.app.servertransaction.StopActivityItem.execute(StopActivityItem.java:41)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:145)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1955)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7078)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
package com.example.security_token_app;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.PersistableBundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Locale;
import java.util.Calendar;
public class MainActivity extends AppCompatActivity
{
private static String SHARED_PREF_NAME = "SharedPrefFile";
SharedPreferences sharedPreferences;
SharedPreferences.Editor editor;
private static String TIMESTAMP_KEY = "TIMESTAMP_KEY";
private TextView countDownTextView;
TextView passCodeTextView;
static int passCode;
static String currentDateTime;
static ArrayList<String> arrayIntegerList = new ArrayList<String>();
Button verifyButton;
private static String LOG_TAG = "log state 1";
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
countDownTextView = (TextView)findViewById(R.id.textView4_time_remaining);
passCodeTextView= (TextView)findViewById(R.id.textView3_passCode_int);
verifyButton = (Button)findViewById(R.id.button1);
sharedPreferences = getSharedPreferences(SHARED_PREF_NAME,MODE_PRIVATE);
createPassCode();
new CountDownTimer(60000, 1000)
{
#Override
public void onTick(long timeUntillFinished)
{
countDownTextView.setText("seconds remaining: " + timeUntillFinished / 1000 % 60);
}
#Override
public void onFinish()
{
createPassCode();
start();
}
}.start();
verifyButton.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View view)
{
String check = sharedPreferences.getString(TIMESTAMP_KEY, null);
Log.i("k1","timestamp: "+check);
if(check != null)
{
arrayIntegerList.add(check);
Toast.makeText(getBaseContext(), "restored", Toast.LENGTH_SHORT).show();
}
openSecondaryActivity();
}
});
}
public void createPassCode()
{
int minute = Calendar.getInstance().get(Calendar.MINUTE);
passCode=minute*1245 + 10000;
String timeStamp = getTimeStamp();
arrayIntegerList.add(timeStamp);
String passCodeStr = Integer.toString(passCode);
passCodeTextView.setText(passCodeStr);
}
public void openSecondaryActivity()
{
Intent intent = new Intent(this, MainActivity2.class);
intent.putExtra("timestamp_list", arrayIntegerList);
startActivity(intent);
}
public static int getPassCode()
{
return passCode;
}
public static String getTimeStamp()
{
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
currentDateTime = dateFormat.format(new Date());
return currentDateTime;
}
#Override
public void onSaveInstanceState(#NonNull Bundle outState)
{
super.onSaveInstanceState(outState);
TextView textView = (TextView) findViewById(R.id.textView4_time_remaining);
long savedData = Long.parseLong(textView.getText().toString());
outState.putLong("outStateKey", savedData);
}
#Override
protected void onRestoreInstanceState(#NonNull Bundle savedInstanceState)
{
super.onRestoreInstanceState(savedInstanceState);
long storedData = savedInstanceState.getLong("outStateKey");
TextView textView = (TextView)findViewById(R.id.textView4_time_remaining);
textView.setText(Long.toString(storedData));
}
}
package com.example.security_token_app;
import androidx.appcompat.app.AppCompatActivity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity2 extends AppCompatActivity
{
SharedPreferences sharedPreferences;
private static String SHARED_PREF_NAME = "SharedPrefFile";
private static String TIMESTAMP_KEY = "TIMESTAMP_KEY";
ArrayList<String> arrayList = new ArrayList<String>();
ListView listView;
Button clearButton;
int count;
String item;
static ArrayAdapter<String> adapter;
static boolean isSaved = false;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
listView = (ListView) findViewById(R.id.listView1);
clearButton = (Button) findViewById(R.id.passButton);
sharedPreferences = getSharedPreferences(SHARED_PREF_NAME,MODE_PRIVATE);
ArrayList<String> timestampList = (ArrayList<String>)getIntent().getSerializableExtra("timestamp_list");
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, timestampList);
listView.setAdapter(adapter);
clearButton.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View view)
{
count = adapter.getCount();
String checkFirstPass = sharedPreferences.getString(TIMESTAMP_KEY,null);
Log.i("k2","timestamp: "+checkFirstPass);
if(checkFirstPass==null)
{
item = adapter.getItem(count - 1);
}
else if(checkFirstPass!=null)
{
item = adapter.getItem(count-2);
}
adapter.clear();
adapter.add(item);
saveTimeStamp(item);
}
});
}
public void saveTimeStamp(String lastItem)
{
if(!lastItem.isEmpty())
{
sharedPreferences = getSharedPreferences(SHARED_PREF_NAME,MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString(TIMESTAMP_KEY, lastItem);
editor.apply();
Toast.makeText(getBaseContext(), "time stamp saved", Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getBaseContext(), "nothing saved", Toast.LENGTH_SHORT).show();
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/root_constraint_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:id="#+id/linear_layout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:layout="#layout/activity_main">
<TextView
android:id="#+id/textView1_blueBox"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="0.25"
android:background="#color/sky_blue"
android:text="test" />
<TextView
android:id="#+id/textView2_passCode_string"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.5"
android:textAlignment="center"
android:text="PASS CODE"
android:textStyle="bold"
android:textSize="38sp"/>
<TextView
android:id="#+id/textView3_passCode_int"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.5"
android:textAlignment="center"
android:textSize="38sp"
android:textStyle="bold"
android:text="test" />
<TextView
android:id="#+id/textView4_time_remaining"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.5"
android:textAlignment="center"
android:textSize="24sp"
tools:text="1:00 seconds remaining"/>
<Button
android:id="#+id/button1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_gravity="center"
android:text="Verify"
android:textStyle="bold"
/>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity2">
<LinearLayout
android:id="#+id/linear_layout1"
android:layout_width ="match_parent"
android:layout_height ="match_parent"
android:orientation="vertical"
tools:layout="#layout/activity_main">
<TextView
android:id="#+id/textView1_blueBox"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="0.25"
android:background="#color/sky_blue" />
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:textStyle="bold"
android:dividerHeight="32dp"
/>
<Button
android:id="#+id/passButton"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_gravity="center"
android:text="PASS"
android:textStyle="bold"
/>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

ViewModel
Use ViewModelenter link description here
It's no problem to rotate
You can learn about the login module of Android studio
enter image description here

Use ViewModel to solve this problem
if you need a practical implementation of how to use this here

Android RecyclerView Changes text to Image when scroll

Can anyone please help me out here???
Problem statement: I am making a chat application that is almost ready in ChatActivity. Functionality is the user can send images and text together but while sending text it's fine. The problem starts when I am sending images. And after sending when I scroll up to my all the texts start to change into the recently sent image.
ChatActivity.xml -
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#drawable/bg_light"
tools:context=".ChatActivity">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="?attr/actionBarTheme">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/backArrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_back_arrow"
app:tint="#color/white" />
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/profile_image"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_marginStart="5dp"
android:padding="5dp"
android:src="#drawable/avatar"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toEndOf="#+id/backArrow"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/userName"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="3dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="13dp"
android:fontFamily="#font/roboto"
android:text=""
android:textColor="#color/white"
android:textSize="20sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/imageView7"
app:layout_constraintStart_toEndOf="#+id/profile_image"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/lastSeen"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="2dp"
android:fontFamily="#font/roboto_light"
android:text=""
android:textColor="#color/white"
android:textSize="12sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/imageView7"
app:layout_constraintStart_toEndOf="#+id/profile_image"
app:layout_constraintTop_toBottomOf="#+id/userName" />
<androidx.constraintlayout.widget.Guideline
android:id="#+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_begin="-22dp" />
<androidx.constraintlayout.widget.Barrier
android:id="#+id/barrier2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:barrierDirection="left"
tools:layout_editor_absoluteX="395dp" />
<ImageView
android:id="#+id/imageView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="10dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_more"
app:tint="#color/white" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.appcompat.widget.Toolbar>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/chatRecyclerView"
android:layout_width="match_parent"
android:layout_height="611dp"
android:nestedScrollingEnabled="false">
</androidx.recyclerview.widget.RecyclerView>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/linear"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:layout_marginBottom="4dp">
<View
android:id="#+id/view14"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:background="#drawable/follow_active_btn"
app:layout_constraintBottom_toBottomOf="#+id/etMessage"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/etMessage" />
<EditText
android:id="#+id/etMessage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginBottom="4dp"
android:background="#color/transparent"
android:ems="10"
android:hint="Message"
android:inputType="textMultiLine"
android:maxLines="4"
android:minHeight="48dp"
android:paddingStart="4dp"
android:paddingLeft="4dp"
android:paddingTop="8dp"
android:paddingBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#+id/sendMessageImage"
app:layout_constraintStart_toStartOf="parent" />
<ImageView
android:id="#+id/sendMessage"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_marginEnd="8dp"
android:padding="4dp"
app:layout_constraintBottom_toBottomOf="#+id/etMessage"
app:layout_constraintEnd_toEndOf="#+id/view14"
app:layout_constraintTop_toTopOf="#+id/etMessage"
app:srcCompat="#drawable/comment"
app:tint="#color/purple_500" />
<ImageView
android:id="#+id/sendMessageImage"
android:layout_width="36dp"
android:layout_height="36dp"
android:padding="4dp"
app:layout_constraintBottom_toBottomOf="#+id/sendMessage"
app:layout_constraintEnd_toStartOf="#+id/sendMessage"
app:layout_constraintTop_toTopOf="#+id/sendMessage"
app:srcCompat="#drawable/clip"
app:tint="#color/black" />
</androidx.constraintlayout.widget.ConstraintLayout>
</LinearLayout>
ChatAdapter.java -
package com.codinggeekers.lmsbeta.Adapter;
import android.content.Context;
import android.media.Image;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.constraintlayout.widget.ConstraintLayout;
import androidx.recyclerview.widget.RecyclerView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.load.resource.bitmap.CenterCrop;
import com.bumptech.glide.load.resource.bitmap.RoundedCorners;
import com.bumptech.glide.request.RequestOptions;
import com.codinggeekers.lmsbeta.Models.MessageModel;
import com.codinggeekers.lmsbeta.R;
import com.google.firebase.auth.FirebaseAuth;
import com.squareup.picasso.Picasso;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
public class ChatAdapter extends RecyclerView.Adapter {
ArrayList<MessageModel> list;
Context context;
int SENDER_VIEW_TYPE = 1;
int RECEIVER_VIEW_TYPE = 2;
public ChatAdapter(ArrayList<MessageModel> list, Context context) {
this.list = list;
this.context = context;
}
#Override
public long getItemId(int position) {
return position;
}
#NonNull
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
if(viewType == SENDER_VIEW_TYPE) {
View view = LayoutInflater.from(context).inflate(R.layout.sample_sender, parent, false);
return new SenderViewHolder(view);
}
else {
View view = LayoutInflater.from(context).inflate(R.layout.sample_receiver, parent, false);
return new ReceiverViewHolder(view);
}
}
#Override
public void onBindViewHolder(#NonNull RecyclerView.ViewHolder holder, int position) {
MessageModel message = list.get(position);
Timestamp ts = new Timestamp(message.getTimestamp());
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("hh:mm a");
String time = simpleDateFormat.format(ts.getTime());
RequestOptions requestOptions = new RequestOptions();
requestOptions = requestOptions.transforms(new CenterCrop(), new RoundedCorners(10));
if(holder.getClass() == SenderViewHolder.class) {
if (message.getMsgImg()!=null) {
((SenderViewHolder)holder).senderImageLayout.setVisibility(View.VISIBLE);
((SenderViewHolder)holder).senderTextLayout.setVisibility(View.GONE);
// Picasso.get().load(message.getMsgImg()).placeholder(R.drawable.placeholder).into(((SenderViewHolder)holder).senderImage);
Glide.with(((SenderViewHolder)holder).itemView.getContext()).load(message.getMsgImg()).apply(requestOptions)
.placeholder(R.drawable.placeholder).into(((SenderViewHolder)holder).senderImage);
} else {
((SenderViewHolder)holder).senderMsg.setText(message.getMessage());
((SenderViewHolder)holder).senderTime.setText(time);
}
}
else {
if (message.getMsgImg()!=null) {
((ReceiverViewHolder)holder).receiverImageLayout.setVisibility(View.VISIBLE);
// Picasso.get().load(message.getMsgImg()).placeholder(R.drawable.placeholder).into(((ReceiverViewHolder)holder).receiverImage);
Glide.with(((ReceiverViewHolder)holder).itemView.getContext()).load(message.getMsgImg()).apply(requestOptions)
.placeholder(R.drawable.placeholder).into(((ReceiverViewHolder)holder).receiverImage);
} else {
((ReceiverViewHolder)holder).receiverMsg.setText(message.getMessage());
((ReceiverViewHolder)holder).receiverTime.setText(time);
}
}
}
#Override
public int getItemViewType(int position) {
if(list.get(position).getuId().equals(FirebaseAuth.getInstance().getUid())) {
return SENDER_VIEW_TYPE;
}
else {
return RECEIVER_VIEW_TYPE;
}
}
#Override
public int getItemCount() {
return list.size();
}
public class ReceiverViewHolder extends RecyclerView.ViewHolder {
TextView receiverMsg, receiverTime;
ImageView receiverImage;
ConstraintLayout receiverImageLayout;
public ReceiverViewHolder(#NonNull View itemView) {
super(itemView);
receiverMsg = itemView.findViewById(R.id.receiverText);
receiverTime = itemView.findViewById(R.id.receiverTime);
receiverImage = itemView.findViewById(R.id.receiverImage);
receiverImageLayout = itemView.findViewById(R.id.imageConstraintLayoutReceiver);
}
}
public class SenderViewHolder extends RecyclerView.ViewHolder {
TextView senderMsg, senderTime;
ImageView senderImage;
ConstraintLayout senderImageLayout;
ConstraintLayout senderTextLayout;
public SenderViewHolder(#NonNull View itemView) {
super(itemView);
senderMsg = itemView.findViewById(R.id.senderText);
senderTime = itemView.findViewById(R.id.senderTime);
senderImage = itemView.findViewById(R.id.senderImage);
senderImageLayout = itemView.findViewById(R.id.imageConstraintLayoutSender);
senderTextLayout = itemView.findViewById(R.id.textConstraintLayoutSender);
}
}
}
ChatActivity.java -
package com.codinggeekers.lmsbeta;
import androidx.activity.result.ActivityResultCallback;
import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import android.annotation.SuppressLint;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import com.codinggeekers.lmsbeta.Adapter.ChatAdapter;
import com.codinggeekers.lmsbeta.Models.MessageModel;
import com.codinggeekers.lmsbeta.databinding.ActivityChatBinding;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.ChildEventListener;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
import java.util.Date;
public class ChatActivity extends AppCompatActivity {
ActivityChatBinding binding;
ProgressDialog dialog;
FirebaseAuth auth;
FirebaseDatabase database;
FirebaseStorage storage;
ActivityResultLauncher<String> galleryLauncher;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityChatBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
auth = FirebaseAuth.getInstance();
database = FirebaseDatabase.getInstance();
storage = FirebaseStorage.getInstance();
dialog = new ProgressDialog(this);
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
dialog.setTitle("Sending Image...");
dialog.setMessage("Please wait...");
dialog.setCancelable(false);
dialog.setCanceledOnTouchOutside(false);
// Sender and Receiver Ids
final String senderId = auth.getUid();
String receiveId = getIntent().getStringExtra("userId");
String userName = getIntent().getStringExtra("userName");
String profilePic = getIntent().getStringExtra("profilePic");
binding.userName.setText(userName);
Picasso.get().load(profilePic).placeholder(R.drawable.avatar).into(binding.profileImage);
binding.backArrow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(ChatActivity.this, UsersChatActivity.class);
startActivity(intent);
}
});
final ArrayList<MessageModel> messageModels = new ArrayList<MessageModel>();
final ChatAdapter chatAdapter = new ChatAdapter(messageModels, this);
binding.chatRecyclerView.setAdapter(chatAdapter);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setStackFromEnd(true);
binding.chatRecyclerView.setHasFixedSize(true);
binding.chatRecyclerView.setLayoutManager(layoutManager);
final String senderRoom = senderId + receiveId;
final String receiverRoom = receiveId + senderId;
database.getReference().child("Chats")
.child(senderRoom)
.addValueEventListener(new ValueEventListener() {
#SuppressLint("NotifyDataSetChanged")
#Override
public void onDataChange(#NonNull DataSnapshot snapshot) {
messageModels.clear();
for (DataSnapshot snapshot1 : snapshot.getChildren()) {
MessageModel model = snapshot1.getValue(MessageModel.class);
messageModels.add(model);
}
chatAdapter.notifyDataSetChanged();
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
}
});
binding.sendMessage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String message = binding.etMessage.getText().toString();
if (message.matches("")) {
} else {
final MessageModel model = new MessageModel(senderId, message, "text");
model.setTimestamp(new Date().getTime());
binding.etMessage.setText("");
database.getReference().child("Chats")
.child(senderRoom)
.push()
.setValue(model).addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(#NonNull Void unused) {
database.getReference().child("Chats").child(receiverRoom).push().setValue(model).addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(#NonNull Void unused) {
}
});
}
});
}
}
});
binding.sendMessageImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
galleryLauncher.launch("image/*");
}
});
galleryLauncher = registerForActivityResult(new ActivityResultContracts.GetContent(), new ActivityResultCallback<Uri>() {
#Override
public void onActivityResult(Uri result) {
dialog.show();
final StorageReference reference = storage.getReference().child("chats")
.child(senderRoom).child(new Date().getTime() + "");
reference.putFile(result).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
reference.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
#Override
public void onSuccess(Uri uri) {
final MessageModel model = new MessageModel(senderId, new Date().getTime(), uri.toString(), "image");
database.getReference()
.child("Chats")
.child(senderRoom)
.push()
.setValue(model).addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(Void unused) {
database.getReference().child("Chats").child(receiverRoom).push().setValue(model).addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(Void unused) {
dialog.dismiss();
binding.sendMessageImage.setImageURI(Uri.EMPTY);
Intent intent = getIntent();
finish();
startActivity(intent);
}
});
}
});
}
});
}
});
}
});
binding.userName.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(ChatActivity.this, FriendsProfileActivity.class);
intent.putExtra("userName", userName);
intent.putExtra("userId", receiveId);
intent.putExtra("profilePic", profilePic);
startActivity(intent);
}
});
}
}

ItemViewType should start at 0.
Try to change them to this:
int SENDER_VIEW_TYPE = 0;
int RECEIVER_VIEW_TYPE = 1;

Listview not showinng the data but showinng the blank position where the value is to be shown

I am parsing a JSON and inflating the listview with it. First listview is showing the correct value but when i am opening another activity from my contributors button, second listview is not showing any value but displays a blank space where the text is to be displayed.
Here is my code...
Main Activity
package com.example.pc.jbossoutreachapp;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void getStarted(View view)
{
Intent intent = new Intent(this, repositories.class);
startActivity(intent);
}
}
layout activity.main
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background"
tools:context=".MainActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="358dp"
android:layout_height="251dp"
android:contentDescription="#string/ContentDescipt"
app:layout_constraintBottom_toTopOf="#+id/textView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/logo" />
<TextView
android:id="#+id/textView"
android:layout_width="0dp"
android:layout_height="31dp"
android:layout_marginBottom="1dp"
android:gravity="center"
android:text="#string/JBoss"
android:textColor="#android:color/holo_red_dark"
android:textSize="#dimen/size"
android:textStyle="bold"
app:fontFamily="sans-serif-smallcaps"
app:layout_constraintBottom_toTopOf="#+id/textView3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView" />
<TextView
android:id="#+id/textView3"
android:layout_width="0dp"
android:layout_height="25dp"
android:gravity="center"
android:text="#string/JBoss_intro"
android:textSize="18sp"
app:layout_constraintBottom_toTopOf="#+id/button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView" />
<Button
android:id="#+id/button"
android:layout_width="114dp"
android:layout_height="48dp"
android:background="#f0e68c"
android:onClick="getStarted"
android:text="#string/Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView3" />
</android.support.constraint.ConstraintLayout>
repositories class
Here the code works fine and the items are shown in the listview
HttpHandler class makes service call and returns Json String.
package com.example.pc.jbossoutreachapp;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
public class repositories extends AppCompatActivity {
private String TAG = MainActivity.class.getSimpleName();
private ProgressDialog ProgDialog;
private ListView listview;
private static String url = "https://api.github.com/orgs/JBossOutreach/repos";
ArrayList<HashMap<String,String>> RepoDetails;
public void link(View view)
{
TextView text = findViewById(R.id.Repolink);
String url = text.getText().toString();
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(browserIntent);
}
public void Contributors(View view)
{
listview = findViewById(R.id.list);
TextView name = findViewById(R.id.RepositoryName);
String n = name.getText().toString();
String url1 = "https://api.github.com/repos/JBossOutreach/"+n+"/contributors";
Intent intent = new Intent(this, contributors.class);
Bundle bundle = new Bundle();
bundle.putString("url", url1);
intent.putExtras(bundle);
startActivity(intent);
}
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.repositories);
RepoDetails = new ArrayList<>();
listview = (ListView)findViewById(R.id.list);
new GetContacts().execute();
}
private class GetContacts extends AsyncTask<Void, Void, Void>
{
#Override
protected void onPreExecute() {
super.onPreExecute();
ProgDialog = new ProgressDialog(repositories.this);
ProgDialog.setMessage("Please wait...");
ProgDialog.setCancelable(false);
ProgDialog.show();
}
#Override
protected Void doInBackground(Void... voids) {
HttpHandler sh = new HttpHandler();
String Json_String = sh.makeServiceCall(url);
Log.e(TAG, "Response from url: " + Json_String);
if(Json_String != null)
{
try
{
JSONArray array = new JSONArray(Json_String);
for(int i = 0; i < array.length(); i++)
{
JSONObject ob = array.getJSONObject(i);
String name = ob.getString("name");
JSONObject owner = ob.getJSONObject("owner");
String link = owner.getString("html_url");
HashMap<String, String> contact = new HashMap<>();
contact.put("name", name);
contact.put("link", link+"/"+name);
RepoDetails.add(contact);
}
}
catch(final JSONException e)
{
Log.e(TAG, "Json parsing error: " + e.getMessage());
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Json Parsing error: " + e.getMessage(), Toast.LENGTH_LONG).show(); }
});
}
}
else
{
Log.e(TAG, "Couldn't get Json from server");
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Couldn't get json from server ", Toast.LENGTH_LONG).show();
}
});
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
if(ProgDialog.isShowing())
{
ProgDialog.dismiss();
}
ListAdapter adapter = new SimpleAdapter(
repositories.this, RepoDetails, R.layout.repo_list_item, new String[]
{"name", "link"}, new int[]{R.id.RepositoryName, R.id.Repolink});
listview.setAdapter(adapter);
}
}
}
repositories.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginStart="109dp"
android:layout_marginLeft="109dp"
android:layout_marginTop="0dp"
android:text="#string/Heading1"
android:textSize="24sp"
android:textStyle="bold" />
<ListView
android:id="#+id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="0dp"
android:layout_marginTop="0dp" />
</RelativeLayout>
repo_list_itmen.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<TextView
android:id="#+id/RepositoryName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="15dp"
android:paddingBottom="8dp"
android:textColor="#color/NameRepo" />
<TextView
android:id="#+id/Repolink"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="link"
android:paddingBottom="8dp"
android:textColor="#color/colorAccent" />
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="Contributors"
android:text="#string/Contributors" />
</LinearLayout>
contributors class
Problem starts from here no items are displayed but only the blank space for the items are displayed.
package com.example.pc.jbossoutreachapp;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
public class contributors extends AppCompatActivity {
private String TAG = contributors.class.getSimpleName();
ArrayList<HashMap<String, String>> names;
ListView lv;
private ProgressDialog progressDialog;
static String url;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.contributors);
names = new ArrayList<>();
lv = findViewById(R.id.list2);
Bundle bundle = getIntent().getExtras();
System.out.print(url);
url = bundle.getString("url");
new contributors.getcontrib().execute();
}
private class getcontrib extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog = new ProgressDialog(contributors.this);
progressDialog.setMessage("Please wait...");
progressDialog.setCancelable(false);
progressDialog.show();
}
#Override
protected Void doInBackground(Void... voids) {
HttpHandler hd = new HttpHandler();
String Json_result = hd.makeServiceCall(url);
Log.e(TAG, "Response from url: " + Json_result);
if (Json_result != null) {
try {
JSONArray array = new JSONArray(Json_result);
for (int i = 0; i < array.length(); i++) {
JSONObject obj = array.getJSONObject(i);
String contributor_name = obj.getString("login");
HashMap<String, String> hashMap = new HashMap<>();
hashMap.put("name", contributor_name);
names.add(hashMap);
}
} catch (final JSONException e) {
Log.e(TAG, "Json parsing error: " + e.getMessage());
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Json Parsing error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
if (progressDialog.isShowing()) {
progressDialog.dismiss();
}
ListAdapter adapter = new SimpleAdapter(
contributors.this, names, R.layout.contributor_list_items, new String[]
{"contributors"}, new int[]{R.id.ContributorsName});
((SimpleAdapter) adapter).notifyDataSetChanged();
lv.setAdapter(adapter);
}
}
}
contributors.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginStart="109dp"
android:layout_marginLeft="109dp"
android:layout_marginTop="0dp"
android:text="#string/Heading2"
android:textSize="24sp"
android:textStyle="bold" />
<ListView
android:id="#+id/list2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="0dp"
android:layout_marginTop="0dp" />
</RelativeLayout>
contributors_list_items.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<TextView
android:id="#+id/ContributorsName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="15dp"
android:paddingBottom="8dp"
android:textColor="#color/colorPrimaryDark" />
</LinearLayout>

Change your AsyncTask call from
new contributors.getcontrib().execute();
to
new getcontrib().execute();
Edit:
Also, change your adapter initialization code from:
ListAdapter adapter = new SimpleAdapter(
contributors.this, names, R.layout.contributor_list_items, new String[]
{"contributors"}, new int[]{R.id.ContributorsName});
to
ListAdapter adapter = new SimpleAdapter(
contributors.this, names, R.layout.contributor_list_items, new String[]
{"name"}, new int[]{R.id.ContributorsName});
Note: you have added your contributers name in "name" key and not in "contributors" key

Check Ur Response First .
String url1 = "https://api.github.com/repos/JBossOutreach/"+n+"/contributors";
Ur Json Respo
{
"message": "Not Found",
"documentation_url": "https://developer.github.com/v3/repos/#list-contributors"
}

When clicked on select item in ListView nothing happen but no error in LogCat

I have problem select item on my ListView . When I clicked nothing happen and I could not go to the next activity because the current listView not clickable.
I tried debugging code line by line but it seems like it not enter the public void onItemClick part. Why it became like that?
Here is my code,
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.Button;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
public class ViewAllBills extends AppCompatActivity implements ListView.OnItemClickListener {
private ListView listView;
private Button mydebtsBtn;
private String JSON_STRING;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_all_bills);
listView = (ListView) findViewById(R.id.listView);
listView.setOnItemClickListener(this);
getJSON();
myDebt();
}
//for new bill
public void myDebt() {
mydebtsBtn = (Button) findViewById(R.id.buttonMyDebt);
mydebtsBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent page1 = new Intent(ViewAllBills.this,myDebt.class);
startActivity(page1);
}
});}
private void showBills(){
JSONObject jsonObject = null;
ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String, String>>();
try {
jsonObject = new JSONObject(JSON_STRING);
JSONArray result = jsonObject.getJSONArray(Config.TAG_JSON_ARRAY);
for(int i = 0; i<result.length(); i++){
JSONObject jo = result.getJSONObject(i);
String id = jo.getString(Config.TAG_ID);
String desc = jo.getString(Config.TAG_DESCRIPTION);
String amo = jo.getString(Config.TAG_AMOUNT);
HashMap<String,String> bills = new HashMap<>();
bills.put(Config.TAG_ID,id);
bills.put(Config.TAG_DESCRIPTION,desc);
bills.put(Config.TAG_AMOUNT,amo);
list.add(bills);
}
} catch (JSONException e) {
e.printStackTrace();
}
ListAdapter adapter = new SimpleAdapter(
ViewAllBills.this, list, R.layout.list_item,
new String[]{Config.TAG_ID,Config.TAG_DESCRIPTION,Config.TAG_AMOUNT},
new int[]{R.id.id, R.id.description,R.id.amountBill});
listView.setAdapter(adapter);
}
private void getJSON(){
class GetJSON extends AsyncTask<Void,Void,String>{
ProgressDialog loading;
#Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(ViewAllBills.this,"Fetching Data","Wait...",false,false);
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
JSON_STRING = s;
showBills();
}
#Override
protected String doInBackground(Void... params) {
RequestHandler rh = new RequestHandler();
String s = rh.sendGetRequest(Config.URL_GET_ALL);
return s;
}
}
GetJSON gj = new GetJSON();
gj.execute();
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(ViewAllBills.this, ViewBills.class);
HashMap<String,String> map =(HashMap)parent.getItemAtPosition(position);
String billId = map.get(Config.TAG_ID).toString();
intent.putExtra(Config.BILL_ID,billId);
startActivity(intent);
}
}
This is my xml file
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
android:background="#color/skyBlue">
<Button android:id="#+id/buttonMyDebt"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginTop="10dip"
android:background="#color/colorAccent"
android:textColor="#color/black"
android:textStyle="bold"
android:focusable="false"
android:text="My Debt"
android:onClick="myDebt"/>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:columnCount="3"
android:rowCount="3"
android:background="#color/softGrey"
android:layout_marginTop="5dp">
<TextView
android:id="#+id/ids"
android:layout_width="40dp"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:textStyle="bold"
android:layout_gravity="center"
android:text="ID"
/>
<TextView
android:id="#+id/descriptions"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_marginTop="10dp"
android:text="Bill Description"
android:layout_gravity="center"
/>
<TextView
android:id="#+id/amounts"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_marginTop="10dp"
android:text="Amount (RM)"
android:layout_gravity="right"
/>
</GridLayout>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="5dp"
android:id="#+id/listView" />
</LinearLayout>
</ScrollView>
This is my List_item.xml layout
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
android:background="#color/skyBlue"
>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnCount="3"
android:rowCount="3"
android:background="#drawable/border_style"
android:layout_marginTop="5dp">
<TextView
android:id="#+id/id"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:textStyle="bold" />
<TextView
android:id="#+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
/>
<TextView
android:id="#+id/amountBill"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_gravity="right"
/>
</GridLayout>
</ScrollView>

Try this:
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.Button;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
public class ViewAllBills extends AppCompatActivity implements ListView.OnItemClickListener {
private Button mydebtsBtn;
private String JSON_STRING;
private ListView listView;
ArrayList<HashMap<String,String>> list;
ListAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_all_bills);
listView = (ListView) findViewById(R.id.listView);
list = new ArrayList<HashMap<String, String>>();
getJSON();
myDebt();
}
//for new bill
public void myDebt() {
mydebtsBtn = (Button) findViewById(R.id.buttonMyDebt);
mydebtsBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent page1 = new Intent(ViewAllBills.this,myDebt.class);
startActivity(page1);
}
});}
private void showBills(){
JSONObject jsonObject = null;
try {
jsonObject = new JSONObject(JSON_STRING);
JSONArray result = jsonObject.getJSONArray(Config.TAG_JSON_ARRAY);
for(int i = 0; i<result.length(); i++){
JSONObject jo = result.getJSONObject(i);
String id = jo.getString(Config.TAG_ID);
String desc = jo.getString(Config.TAG_DESCRIPTION);
String amo = jo.getString(Config.TAG_AMOUNT);
HashMap<String,String> bills = new HashMap<>();
bills.put(Config.TAG_ID,id);
bills.put(Config.TAG_DESCRIPTION,desc);
bills.put(Config.TAG_AMOUNT,amo);
list.add(bills);
}
} catch (JSONException e) {
e.printStackTrace();
}
adapter = new SimpleAdapter(
ViewAllBills.this, list, R.layout.list_item,
new String[]{Config.TAG_ID,Config.TAG_DESCRIPTION,Config.TAG_AMOUNT},
new int[]{R.id.id, R.id.description,R.id.amountBill});
listView.setAdapter(adapter);
listView.setOnItemClickListener(this);
}
private void getJSON(){
class GetJSON extends AsyncTask<Void,Void,String>{
ProgressDialog loading;
#Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(ViewAllBills.this,"Fetching Data","Wait...",false,false);
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
loading.dismiss();
JSON_STRING = s;
showBills();
}
#Override
protected String doInBackground(Void... params) {
RequestHandler rh = new RequestHandler();
String s = rh.sendGetRequest(Config.URL_GET_ALL);
return s;
}
}
GetJSON gj = new GetJSON();
gj.execute();
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(ViewAllBills.this, ViewBills.class);
HashMap<String,String> map = list.get(position);
String billId = map.get(Config.TAG_ID).toString();
intent.putExtra(Config.BILL_ID,billId);
startActivity(intent);
}
}

If you have an active view/focusable view in your list view then it will disable your onItemClickListener.you can try to make it unfocusable by adding: android:focusable="false" ,android:focusableInTouchMode="false"to any view that is usually focusable.
I was facing the same problem and setting android:focusableInTouchMode="false" solve my problem

My problem solved..
Actually i duplicating the scrolview layout in my list_item.xml.. after i removed the scrolview and left the gridlayout only, the select list item working..

App seems like launching more than once in landscape mode after splash screen?

I have a splash screen and after that my main activity starts. This works fine in portrait mode but if in case i tilt my phone in landscape mode, the main activity can be seen launching more than once after splash screen.
I tried using android:launchMode="singleInstance" but in that case i am not able to attach files in feedback alert-box.
Following is my code:
MainActivity.java
package com.example.android.tel;
import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.drawable.ColorDrawable;
import android.net.Uri;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.CardView;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Window;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.crashlytics.android.Crashlytics;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MainActivity extends AppCompatActivity {
Toolbar mActionBarToolbar;
TextView toolbar_title_mainActivity, main_textView, disclaimer_txtView;
CardView SearchDept, SearchName, disclaimer, feedback;
ImageView back;
ArrayList<Uri> arrayUri = new ArrayList<Uri>();
ArrayAdapter<Uri> myFileListAdapter;
ListView listViewFiles;
Dialog alertDialog;
final int RQS_LOADIMAGE = 0;
final int RQS_SENDEMAIL = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getResources().getConfiguration().orientation ==
Configuration.ORIENTATION_PORTRAIT) {
setContentView(R.layout.activity_main);
} else {
setContentView(R.layout.activity_main);
}
mActionBarToolbar = (Toolbar) findViewById(R.id.tool_bar_main_activity);
toolbar_title_mainActivity = (TextView) findViewById(R.id.toolbar_title);
main_textView = (TextView) findViewById(R.id.main_textView);
main_textView.setPaintFlags(main_textView.getPaintFlags() | Paint.UNDERLINE_TEXT_FLAG);
setSupportActionBar(mActionBarToolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
toolbar_title_mainActivity.setText("Hry. Govt. Telephone Directory");
back = (ImageView) findViewById(R.id.back);
back.setVisibility(View.INVISIBLE);
disclaimer = (CardView) findViewById(R.id.disclaimer);
feedback = (CardView) findViewById(R.id.feedback);
SearchDept = (CardView) findViewById(R.id.cardView1_mainActivity);
SearchName = (CardView) findViewById(R.id.cardView2_mainActivity);
SearchDept.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this, CardViewActivity.class);
startActivity(i);
}
});
SearchName.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent j = new Intent(MainActivity.this, ByNameListActivity.class);
startActivity(j);
}
});
disclaimer.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Dialog alertDialog = new Dialog(MainActivity.this);
alertDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
alertDialog.setContentView(R.layout.disclaimer);
alertDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.WHITE));
alertDialog.show();
}
});
feedback.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
alertDialog = new Dialog(MainActivity.this);
alertDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
alertDialog.setContentView(R.layout.feedback);
alertDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.WHITE));
alertDialog.setCanceledOnTouchOutside(true);
ImageView send_btn=(ImageView)alertDialog.findViewById(R.id.send);
ImageView attach_btn=(ImageView)alertDialog.findViewById(R.id.attachment);
final TextView to_email_add=(TextView)alertDialog.findViewById(R.id.email_address);
to_email_add.setText("tel#gmail.com");
final EditText email_subject=(EditText)alertDialog.findViewById(R.id.email_subject);
final EditText email_text=(EditText)alertDialog.findViewById(R.id.email_text);
final EditText mobile_no=(EditText)alertDialog.findViewById(R.id.mobile_text);
email_subject.setOnFocusChangeListener(new View.OnFocusChangeListener() {
#Override
public void onFocusChange(View v, boolean hasFocus) {
if (!hasFocus) {
hideKeyboard(v);
}
}
});
email_text.setOnFocusChangeListener(new View.OnFocusChangeListener() {
#Override
public void onFocusChange(View v, boolean hasFocus) {
if (!hasFocus) {
hideKeyboard(v);
}
}
});
myFileListAdapter = new ArrayAdapter<Uri>(
MainActivity.this,
android.R.layout.simple_list_item_1,
arrayUri);
listViewFiles = (ListView)alertDialog.findViewById(R.id.filelist);
listViewFiles.setAdapter(myFileListAdapter);
listViewFiles.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
myFileListAdapter.remove(arrayUri.get(position));
myFileListAdapter.notifyDataSetChanged();
Toast.makeText(view.getContext(), "You unattached one item", Toast.LENGTH_LONG).show();
return false;
}
});
attach_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, RQS_LOADIMAGE);
}
});
send_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String email_add=to_email_add.getText().toString();
String email_sub=email_subject.getText().toString();
String email_txt=email_text.getText().toString();
String emailAddressList[] = {email_add};
String mobileNo=mobile_no.getText().toString();
String info=email_txt+"\n\nPhone Number :"+mobileNo;
Intent intent = new Intent();
intent.putExtra(Intent.EXTRA_EMAIL, emailAddressList);
intent.putExtra(Intent.EXTRA_SUBJECT, email_sub);
intent.putExtra(Intent.EXTRA_TEXT,info);
if(arrayUri.isEmpty()&& isValidPhone(mobileNo)&& !(mobileNo.isEmpty())){
//send email without photo attached
intent.setAction(Intent.ACTION_SEND);
intent.setType("plain/text");
new Handler().postDelayed(new Runnable() {
public void run() {
alertDialog.dismiss();
}
}, 5000);
}else if(arrayUri.size() == 1 && isValidPhone(mobileNo)&& !(mobileNo.isEmpty())){
//send email with ONE photo attached
intent.setAction(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_STREAM, arrayUri.get(0));
intent.setType("image/*");
new Handler().postDelayed(new Runnable() {
public void run() {
alertDialog.dismiss();
}
}, 5000);
}else if(arrayUri.size()>1&& isValidPhone(mobileNo)&& !(mobileNo.isEmpty())){
//send email with MULTI photo attached
intent.setAction(Intent.ACTION_SEND_MULTIPLE);
intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, arrayUri);
intent.setType("image/*");
new Handler().postDelayed(new Runnable() {
public void run() {
alertDialog.dismiss();
}
}, 5000);
}
else {
Toast.makeText(v.getContext(), "Phone number is not valid", Toast.LENGTH_LONG).show();
}
startActivity(Intent.createChooser(intent, "Please provide valid details"));
}
});
alertDialog.show();
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK){
switch(requestCode){
case RQS_LOADIMAGE:
Uri imageUri = data.getData();
arrayUri.add(imageUri);
myFileListAdapter.notifyDataSetChanged();
break;
case RQS_SENDEMAIL:
break;
}
}
}
public static boolean isValidPhone(String phone)
{
String expression = "^([0-9\\+]|\\(\\d{1,3}\\))[0-9\\-\\. ]{3,15}$";
CharSequence inputString = phone;
Pattern pattern = Pattern.compile(expression);
Matcher matcher = pattern.matcher(inputString);
if (matcher.matches())
{
return true;
}
else{
return false;
}
}
public void hideKeyboard(View view) {
InputMethodManager inputMethodManager =(InputMethodManager)getSystemService(Activity.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
int orientation;
if (getResources().getConfiguration().orientation ==
Configuration.ORIENTATION_PORTRAIT) {
orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
// or = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
}else {
orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
}
// Add code if needed
// listViewFiles.setAdapter(myFileListAdapter);
// myFileListAdapter.notifyDataSetChanged();
setRequestedOrientation(orientation);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:weightSum="14"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
tools:context="com.example.android.tel.MainActivity">
<include
android:id="#+id/tool_bar_main_activity"
layout="#layout/toolbar">
</include>
<TextView
android:id="#+id/main_textView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.5"
android:layout_marginTop="10dp"
android:text="How would you like to search?"
android:textStyle="bold"
android:textSize="14sp"
android:textColor="#1A237E"
android:gravity="center_horizontal"/>
<RelativeLayout
android:id="#+id/searchby_btns"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="4"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:gravity="center_vertical">
<android.support.v7.widget.CardView
android:id="#+id/cardView1_mainActivity"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="center"
card_view:cardCornerRadius="4dp"
android:layout_marginTop="10dp"
card_view:cardBackgroundColor="#e97c1d">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search By Department.."
android:textColor="#android:color/white"
android:textStyle="bold"
android:textSize="18sp"
android:layout_centerInParent="true"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="#+id/cardView2_mainActivity"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="center"
android:layout_below="#id/cardView1_mainActivity"
card_view:cardCornerRadius="4dp"
android:layout_marginTop="20dp"
card_view:cardBackgroundColor="#e97c1d">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search By Name.."
android:textColor="#android:color/white"
android:textStyle="bold"
android:textSize="18sp"
android:layout_centerInParent="true"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="8.5">
<ImageView
android:id="#+id/map_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/hry_map"
android:elevation="4dp"
android:layout_gravity="center"/>
</RelativeLayout>
<RelativeLayout
android:layout_below="#id/map_image"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:paddingRight="16dp"
android:paddingLeft="16dp"
android:layout_marginTop="2dp"
android:gravity="center_horizontal"
android:layout_alignParentBottom="true">
<android.support.v7.widget.CardView
android:id="#+id/disclaimer"
android:layout_width="150dp"
android:layout_height="30dp"
card_view:cardCornerRadius="4dp"
card_view:cardElevation="4dp"
android:layout_marginRight="8dp"
card_view:cardBackgroundColor="#424242">
<TextView
android:layout_width="150dp"
android:layout_height="30dp"
android:text="Disclaimer"
android:gravity="center"
android:layout_gravity="center_vertical"
android:textColor="#FFFFFF"
android:textStyle="bold"/>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="#+id/feedback"
android:layout_toRightOf="#id/disclaimer"
android:layout_width="150dp"
android:layout_height="30dp"
card_view:cardCornerRadius="4dp"
card_view:cardElevation="4dp"
card_view:cardBackgroundColor="#424242">
<TextView
android:layout_width="150dp"
android:layout_height="30dp"
android:text="Feedback"
android:gravity="center"
android:layout_gravity="center_vertical"
android:textColor="#FFFFFF"
android:textStyle="bold"/>
</android.support.v7.widget.CardView>
</RelativeLayout>
</LinearLayout>
SplashScreenActivity.java
package com.example.android.telephonedirectory;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ProgressBar;
import com.felipecsl.gifimageview.library.GifImageView;
import org.apache.commons.io.IOUtils;
import java.io.IOException;
import java.io.InputStream;
public class SplashScreenActivity extends AppCompatActivity {
// private GifImageView gifimageview;
private ProgressBar progressBarSplashScreen;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getResources().getConfiguration().orientation ==
Configuration.ORIENTATION_PORTRAIT) {
setContentView(R.layout.activity_splash_screen);
} else {
setContentView(R.layout.activity_splash_screen);
}
// gifimageview=(GifImageView)findViewById(R.id.gifSplashscreenImage);
progressBarSplashScreen=(ProgressBar)findViewById(R.id.progressbarSplashscreen);
progressBarSplashScreen.setVisibility(progressBarSplashScreen.VISIBLE);
//set GifImageView Resource
/*try {
InputStream inputStream=getAssets().open("splash_Screen.png");
byte[] bytes= IOUtils.toByteArray(inputStream);
gifimageview.setBytes(bytes);
gifimageview.startAnimation();
}catch (IOException ex){
}*/
//Wait for 4 seconds and start activity main
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
SplashScreenActivity.this.startActivity(new Intent(SplashScreenActivity.this,MainActivity.class));
SplashScreenActivity.this.finish();
}
},2000);
}
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
int orientation;
if (getResources().getConfiguration().orientation ==
Configuration.ORIENTATION_PORTRAIT) {
orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
// or = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
}else {
orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
}
// Add code if needed
// listViewFiles.setAdapter(myFileListAdapter);
// myFileListAdapter.notifyDataSetChanged();
setRequestedOrientation(orientation);
}
}

Dont use android:launchMode="singleInstance"
Launch mode you should use "singleTask" for this .
Because singleInstance creates separate task stack for Activity and do not check activity in current Task Stack.
while "singleTask" check each time if an Activity exist in Task Stack it can not create new one.