Develop Reference

Android 4.1.1 - findViewById on RecyclerView returns null in MainActivity

I'm following Android Fundamentals CodeLabs (https://developer.android.com/codelabs/android-training-create-recycler-view?index=..%2F..%2Fandroid-training#3), with minor changes given I am using a more advanced version of Android Studio (4.1.1) and am getting a null recyclerView in MainActivity onCreate method even though the view exists. I've used BasicActivity to start this project. How do I fix this?
Here my XML for fragment_first.xml:
<?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=".FirstFragment">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/ourcards_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<Button
android:id="#+id/button_first"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/next"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
and here the MainActivity.java file content:
package com.example.ourcards;
import android.os.Bundle;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import java.util.LinkedList;
public class MainActivity extends AppCompatActivity {
private final LinkedList<String> mCardList = new LinkedList<>();
private RecyclerView mRecyclerView;
private CardListAdapter mAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
mCardList.addLast("Carta 1");
mCardList.addLast("Carta 2");
// Get a handle to the RecyclerView.
mRecyclerView = findViewById(R.id.ourcards_view);
// Create an adapter and supply the data to be displayed.
mAdapter = new CardListAdapter(this, mCardList);
// Connect the adapter with the RecyclerView.
mRecyclerView.setAdapter(mAdapter);
// Give the RecyclerView a default layout manager.
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
EDIT
Here is my activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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=".MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/Theme.OurCards.AppBarOverlay">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/Theme.OurCards.PopupOverlay" />
</com.google.android.material.appbar.AppBarLayout>
<include layout="#layout/content_main" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
app:srcCompat="#drawable/ic_add_for_fab" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
Here content_main.xml
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<fragment
android:id="#+id/nav_host_fragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="0dp"
android:layout_height="0dp"
app:defaultNavHost="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="#navigation/nav_graph" />
</androidx.constraintlayout.widget.ConstraintLayout>
Here my CardListAdapter.java
package com.example.ourcards;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import java.util.LinkedList;
public class CardListAdapter extends
RecyclerView.Adapter<CardListAdapter.CardViewHolder> {
private final LinkedList<String> mCardList;
private final LayoutInflater mInflater;
class CardViewHolder extends RecyclerView.ViewHolder {
public final TextView cardItemView;
final CardListAdapter mAdapter;
public CardViewHolder(View itemView, CardListAdapter adapter) {
super(itemView);
cardItemView = itemView.findViewById(R.id.card);
this.mAdapter = adapter;
}
}
public CardListAdapter(Context context,
LinkedList<String> cardList) {
mInflater = LayoutInflater.from(context);
this.mCardList = cardList;
}
#NonNull
#Override
public CardListAdapter.CardViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View mItemView = mInflater.inflate(R.layout.cardlist_item,
parent, false);
return new CardViewHolder(mItemView, this);
}
#Override
public void onBindViewHolder(#NonNull CardListAdapter.CardViewHolder holder, int position) {
String mCurrent = mCardList.get(position);
holder.cardItemView.setText(mCurrent);
}
#Override
public int getItemCount() {
return mCardList.size();
}
}
and here my FirstFragment.java
package com.example.ourcards;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.navigation.fragment.NavHostFragment;
public class FirstFragment extends Fragment {
#Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState
) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_first, container, false);
}
public void onViewCreated(#NonNull View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
view.findViewById(R.id.button_first).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
NavHostFragment.findNavController(FirstFragment.this)
.navigate(R.id.action_FirstFragment_to_SecondFragment);
}
});
}
}

Here my XML for fragment_first.xml:
Note that your filename is fragment_first.xml.
and here the MainActivity.java file content
Your code here seems to have nothing to do with fragment_first.xml. For example, your setContentView() call is loading activity_main.xml.
So, either your RecyclerView needs to be in activity_main.xml, your setContentView() needs to be loading fragment_first, or you otherwise need to synchronize the work in your two code snippets.

ListView only shows the first item from the arraylist

Previously I had crash issues due to the wrong reference to the resource files. Fixed that issue and updated this thread with the logical error that I am getting.
I am new to android and currently learning custom classes and adapter. While working I am facing a problem which is the listview shows the first arraylist item only.
I have attached the codes of the required files as well.
Working Activity
package np.com.shresthakiran.tourswoniga;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;
import java.util.ArrayList;
public class KhowpaActivity extends AppCompatActivity {
ListView lvHeritageList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview_heritage);
lvHeritageList = findViewById(R.id.lvHeritage);
ArrayList<Heritages> heritageAryList = new ArrayList<>();
heritageAryList.add(new Heritages(R.drawable.ic_launcher_background,"Ngatapol", "Taumadi"));
heritageAryList.add(new Heritages(R.drawable.ic_launcher_foreground, "Dattatreya", "Taumadi"));
heritageAryList.add(new Heritages(R.drawable.ic_launcher_foreground, "Lu dhwakha", "Lyaaku"));
heritageAryList.add(new Heritages(R.drawable.ic_launcher_foreground, "55 jhyale Durbar", "Lyaaku"));
heritageAryList.add(new Heritages(R.drawable.ic_launcher_foreground, "Taleju Bhawani", "Lyaaku"));
HeritageAdapter heritageAdapter = new HeritageAdapter(KhowpaActivity.this, R.layout.heritages_row, heritageAryList);
lvHeritageList.setAdapter(heritageAdapter);
}
}
Custom Adapter
package np.com.shresthakiran.tourswoniga;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import java.util.ArrayList;
public class HeritageAdapter extends ArrayAdapter<Heritages> {
private Context mContext;
private int mResource;
public HeritageAdapter(#NonNull Context context, int resource, #NonNull ArrayList<Heritages> objects) {
super(context, resource, objects);
this.mContext = context;
this.mResource = resource;
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
LayoutInflater layoutInflater =LayoutInflater.from(mContext);
convertView = layoutInflater.inflate(mResource, parent, false);
ImageView ivHeritageImage = convertView.findViewById(R.id.ivHeritage);
TextView tvHeritageName = convertView.findViewById(R.id.tvHeritageName);
TextView tvHeritageAddress = convertView.findViewById(R.id.tvHeritageAddress);
ivHeritageImage.setImageResource(getItem(position).getmImageResourceId());
tvHeritageName.setText(getItem(position).getmHeritageName());
tvHeritageAddress.setText(getItem(position).getmHeritageAddress());
return convertView;
}
}
Object Class
package np.com.shresthakiran.tourswoniga;
public class Heritages {
private int mImageResourceId;
private String mHeritageName;
private String mHeritageAddress;
public Heritages(int heritageImageResourceId, String heritageName, String heritageAddress) {
this.mImageResourceId = heritageImageResourceId;
this.mHeritageName = heritageName;
this.mHeritageAddress = heritageAddress;
}
public int getmImageResourceId() {
return mImageResourceId;
}
public String getmHeritageName() {
return mHeritageName;
}
public String getmHeritageAddress() {
return mHeritageAddress;
}
}
ListView XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="100dp"
android:minHeight="100dp">
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/lvHeritage">
</ListView>
</RelativeLayout>
List Row 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="horizontal"
android:weightSum="100"
android:layout_margin="10dp">
<ImageView
android:id="#+id/ivHeritage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="33.33"
android:padding="2dp"
android:text="Ngatapol"
android:layout_marginTop="7dp"
android:src="#mipmap/ic_launcher"/>
<LinearLayout
android:id="#+id/llHeritageInfo"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_weight="66.66"
android:padding="8dp" >
<TextView
android:id="#+id/tvHeritageName"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:textSize="18sp"
android:textStyle="bold"
android:text="Ngatapol"
android:textAppearance="?android:textAppearanceMedium"
android:padding="2dp"/>
<TextView
android:id="#+id/tvHeritageAddress"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:textSize="18sp"
android:text="Taumadi"
android:padding="2dp"/>
</LinearLayout>
</LinearLayout>

listview shows the first item only is because you have set height in heritages_row layout to match_parent which will cover the whole screen height and for the next item, you've to scroll down even if the content of the first item is not covering the whole height.
To make each row to only cover the content its displaying, use wrap_content instead of match_parent.

ListView isn't working, it is not displaying the listView on the main page

my ListView isn't working, it is not displaying the listView on the main page. Any solutions?
Does it have to do with my layout file too? I will attach the layout file below too!
I was trying to make an adapter for the listview
It is just a simple one page application which I try to learn how to use listview. Did I do any wrong about the code? I was mainly following a youtube tutorial for this but still an error occur
MainActivity.java
package com.example.myapplication;
import android.content.res.Resources;
import android.os.Bundle;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class MainActivity extends AppCompatActivity {
Toolbar toolbar;
FloatingActionButton fab;
ListView myListView;
String [] items;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Resources res = getResources();
myListView = (ListView) findViewById(R.id.myListView);
items = res.getStringArray(R.array.items);
ItemAdapter itemAdapter = new ItemAdapter(this, items);
myListView.setAdapter(itemAdapter);
// myListView.setAdapter(new ArrayAdapter<String>(this,R.layout.));
fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
ItemAdapter.java
package com.example.myapplication;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
//A class that are BaseAdapter but with another name call 'ItemAdapter'
//To pass values/data to ListView
public class ItemAdapter extends BaseAdapter {
LayoutInflater mInflater;
String[] items;
public ItemAdapter(Context c, String[] i){
items = i;
mInflater = (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE); //To initialize inflater
}
#Override
public int getCount() {
return items.length;
}
#Override
public Object getItem(int i) {
return items[i];
}
#Override
public long getItemId(int i) {
return i;
}
#Override
public View getView(int i, View convertView, ViewGroup parent) {
View v = mInflater.inflate(R.layout.my_listview_details,null);
TextView nameTextView = (TextView) v.findViewById(R.id.nameTextView);
String name = items[i];
nameTextView.setText(name);
return v;
}
}
activity_main.xml
<?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=".MainActivity">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:title="Your Library"
app:titleTextColor="#fff" />
<include
android:id="#+id/include"
layout="#layout/content_main"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="24dp"
android:layout_marginBottom="24dp"
android:clickable="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0"
app:srcCompat="#drawable/round_add_white_24" />
</androidx.constraintlayout.widget.ConstraintLayout>
content_main.xml
<?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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_marginTop="?attr/actionBarSize"
tools:context=".MainActivity"
tools:showIn="#layout/activity_main">
<ListView
android:id="#+id/myListView"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
my_listview_details.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent" android:layout_height="match_parent">
<TextView
android:id="#+id/nameTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="24dp"
android:layout_marginTop="24dp"
android:text="TextView" />
</RelativeLayout>
Any solutions?

used this
Change Height and width 0dp to as below
<ListView
android:id="#+id/myListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />

Instead of using ItemAdapter a custom class. If you have very simple list then just use the built-in ArrayAdapter class to register the listview.
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, items);
listView.setAdapter(adapter);

Resources res = getResources();
myListView = (ListView) findViewById(R.id.myListView);
items = res.getStringArray(R.array.items);
-- > Try to check items.length in toast or console. Check if it is showing data or not.

How to get the number in a message when click in the textView Fragment class

How to get the data in a message when click in the textView from Fragment
i Work on android studio
I hope to get the code with all thanks
How to get the data in a message when click in the textView from Fragment
i Work on android studio
I hope to get the code with all thanks
<uses-permission android:name="android.permission.READ_CALL_LOG" />
Gratefully
class
import android.annotation.SuppressLint;
import android.content.CursorLoader;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.CallLog;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
/**
* Created by TAREQALEID1 on 09/06/2017.
*/
public class Tab1 extends Fragment {
View rootView;
boolean mDualPane;
int mCurCheckPosition = 0;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
Button btnCheckFalAction ;
rootView=inflater.inflate(R.layout.tab1,container,false);
ArrayList<HashMap<String,String>> callLog=getCallLog();
CustomCallLogListAdapter adapter=new CustomCallLogListAdapter(getActivity(),R.layout.row_call_log_layout,callLog);
ListView list_calllog=(ListView)rootView.findViewById(R.id.list_calllog);
list_calllog.setAdapter(adapter);
btnCheckFalAction = (Button) rootView.findViewById(R.id.button2); // you have to use rootview object..
btnCheckFalAction.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v)
{
Toast.makeText(getActivity(), "Hello World", Toast.LENGTH_LONG).show();
}
});
return rootView;
}
#Override
public void onActivityCreated(final Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onActivityCreated(savedInstanceState);
ListView list_calllog=(ListView)rootView.findViewById(R.id.list_calllog);
list_calllog.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long arg3) {
Toast.makeText(getActivity(), "Item clicked : " + position, Toast.LENGTH_LONG).show();
}
});
}
#SuppressLint("NewApi")
public ArrayList<HashMap<String,String>> getCallLog()
{
ArrayList<HashMap<String,String>> callLog=new ArrayList<HashMap<String,String>>();
CursorLoader cursorLoader=new CursorLoader(getActivity(), CallLog.Calls.CONTENT_URI, null, null, null, null);
Cursor cursor=cursorLoader.loadInBackground();
if(cursor.moveToFirst())
{
while (cursor.moveToNext())
{
HashMap<String,String> hashMap=new HashMap<String, String>();
hashMap.put(CallLog.Calls.NUMBER, cursor.getString(cursor.getColumnIndex(CallLog.Calls.NUMBER)));
hashMap.put(CallLog.Calls.DATE, cursor.getString(cursor.getColumnIndex(CallLog.Calls.DATE)));
hashMap.put(CallLog.Calls.DURATION, cursor.getString(cursor.getColumnIndex(CallLog.Calls.DURATION)));
callLog.add(hashMap);
}
}
return callLog;
}
}
import android.content.Context;
import android.provider.CallLog;
import android.text.format.DateFormat;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
public class CustomCallLogListAdapter extends ArrayAdapter<HashMap<String,String>>
{
private ArrayList<HashMap<String,String>> callLogData;
private Context context;
private int resource;
private View view;
private Holder holder;
private HashMap<String,String> hashMap;
public CustomCallLogListAdapter(Context context, int resource,ArrayList<HashMap<String, String>> objects)
{
super(context, resource, objects);
this.context=context;
this.resource=resource;
this.callLogData=objects;
}
#Override
public View getView(int position, View convertView, ViewGroup parent)
{
LayoutInflater inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view=inflater.inflate(resource, parent,false);
holder=new Holder();
holder.text_number=(TextView)view.findViewById(R.id.text_calllog_number);
holder.text_date=(TextView)view.findViewById(R.id.text_calllog_date);
holder.text_time=(TextView)view.findViewById(R.id.text_calllog_time);
hashMap=callLogData.get(position);
Date date=new Date(Long.parseLong(hashMap.get(CallLog.Calls.DATE)));
java.text.DateFormat dateFormat=DateFormat.getDateFormat(context);
java.text.DateFormat timeformat=DateFormat.getTimeFormat(context);
holder.text_number.setText(hashMap.get(CallLog.Calls.NUMBER));
holder.text_time.setText(timeformat.format(date));
holder.text_date.setText(dateFormat.format(date));
return view;
}
public class Holder
{
TextView text_number;
TextView text_date;
TextView text_time;
}
}
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
public class Getfolder1 extends AppCompatActivity {
/**
* The {#link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {#link FragmentPagerAdapter} derivative, which will keep every
* loaded fragment in memory. If this becomes too memory intensive, it
* may be best to switch to a
* {#link android.support.v4.app.FragmentStatePagerAdapter}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {#link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_getfolder1);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
mViewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.addOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(mViewPager));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_getfolder1, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
}
/**
* A {#link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position){
case 0:
Tab1 tab1= new Tab1();
return tab1;
case 1:
Tab2 tab2= new Tab2();
return tab2;
}
return null;
}
#Override
public int getCount() {
// Show 3 total pages.
return 2;
}
}
}
<!-- begin snippet: js hide: false console: true babel: false -->
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/lyt1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/textView5"
android:layout_width="match_parent"
android:layout_height="40dp"
android:text="TextView"
tools:ignore="HardcodedText"
tools:text="مرحبا" />
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="40dp"
android:text="Button"
tools:ignore="HardcodedText" />
<ListView
android:id="#+id/list_calllog"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</android.support.constraint.ConstraintLayout>
<!-- begin snippet: js hide: false console: true babel: false -->
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="imagingstudents2.com.imagingstudents2.Getfolder1">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/appbar_padding_top"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_weight="1"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:title="#string/app_name">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabItem
android:id="#+id/tabItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tab_text_1" />
<android.support.design.widget.TabItem
android:id="#+id/tabItem2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tab_text_2" />
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
row_call_log_layout.xml
<?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:id="#+id/const1"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_marginBottom="#dimen/activity_horizontal_margin"
android:layout_marginLeft="#dimen/activity_vertical_margin"
android:layout_marginRight="#dimen/activity_vertical_margin"
android:layout_marginTop="#dimen/activity_horizontal_margin">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/text_calllog_number"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#android:color/holo_orange_light"
android:textSize="20sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:id="#+id/lyott2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:layout_weight="1"
android:orientation="horizontal"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text_calllog_number">
<TextView
android:id="#+id/text_calllog_date"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
tools:ignore="NestedWeights" />
<TextView
android:id="#+id/text_calllog_time"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
</android.support.constraint.ConstraintLayout>

Add an OnclickListener to the holder.text_number:
String message = "";
holder.text_number.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
message = textview.getText().toString();
Toast.makeText(getActivity(), "Message : " + message, Toast.LENGTH_LONG).show();
}
});
Now do whatever you want with the message String.

final TextView text_number2=(TextView)view.findViewById(R.id.text_calllog_number);
holder.text_number.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText( context, "" + text_number2.getText().toString() , Toast.LENGTH_LONG).show();
}
});
Ten days I look for the answer .....Wadaane .... Thank you very much

How can I make drawer menu link to other fragment in Android Studio

I'm not using standard drawer from android studio but I'm using SlidingPanelLayout to create drawer (I made from this tutorials https://nganthony.github.io/2016/01/24/implementing-android-mini-navigation-drawer.html)
My drawer is work well but I can't figure out how can I make button link to another fragment
I use this method to call fragment in standard drawer
if (id == R.id.nav_sms) {
SMSFragment smsFragment = new SMSFragment();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(
R.id.layout_main,
smsFragment,
smsFragment.getTag()
).commit();
My Project files
MainActivity.java
package com.th.ac.sd;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.app.FragmentManager;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import com.ng.anthony.mininavigationdrawer.R;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
MasterFragment.java
package com.th.ac.sd;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.ng.anthony.mininavigationdrawer.R;
/**
* Created by Anthony on 16-01-25.
*/
public class MasterFragment extends ListFragment {
public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_master, container);
setListAdapter(new MenuListAdapter(R.layout.row_menu_action_item, getActivity(), MenuActionItem.values()));
return view;
}
}
MenuActionItem.java
package com.th.ac.sd;
/**
* Created by Anthony on 16-01-25.
*/
public enum MenuActionItem {
ITEM1,
ITEM2,
ITEM3,
ITEM4,
ITEM5
}
MenuListAdapter.java
package com.th.ac.sd;
import android.app.Activity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.ng.anthony.mininavigationdrawer.R;
/**
* Created by Anthony on 16-01-25.
*/
public class MenuListAdapter extends ArrayAdapter<MenuActionItem> {
int resource;
Activity activity;
public MenuListAdapter(int resource, Activity activity, MenuActionItem[] items) {
super(activity, resource, items);
this.resource = resource;
this.activity = activity;
}
public View getView (int position, View convertView, ViewGroup parent) {
View rowView = convertView;
if(rowView == null) {
rowView = activity.getLayoutInflater().inflate(resource, null);
MenuItemViewHolder viewHolder = new MenuItemViewHolder();
viewHolder.menuItemImageView = (ImageView)rowView.findViewById(R.id.menu_item_image_view);
viewHolder.menuItemTextView = (TextView)rowView.findViewById(R.id.menu_item_text_view);
rowView.setTag(viewHolder);
}
MenuItemViewHolder holder = (MenuItemViewHolder)rowView.getTag();
if(position == MenuActionItem.ITEM1.ordinal()) {
holder.menuItemImageView.setImageDrawable(activity.getDrawable(R.drawable.ic_megaphone));
holder.menuItemTextView.setText(activity.getResources().getString(R.string.item1));
}
else if(position == MenuActionItem.ITEM2.ordinal()) {
holder.menuItemImageView.setImageDrawable(activity.getDrawable(R.drawable.ic_calendar_page_empty));
holder.menuItemTextView.setText(activity.getResources().getString(R.string.item2));
}
else if(position == MenuActionItem.ITEM3.ordinal()) {
holder.menuItemImageView.setImageDrawable(activity.getDrawable(R.drawable.ic_chat_bubbles));
holder.menuItemTextView.setText(activity.getResources().getString(R.string.item3));
}
else if(position == MenuActionItem.ITEM4.ordinal()) {
holder.menuItemImageView.setImageDrawable(activity.getDrawable(R.drawable.ic_college_graduation));
holder.menuItemTextView.setText(activity.getResources().getString(R.string.item4));
}
else if(position == MenuActionItem.ITEM5.ordinal()) {
holder.menuItemImageView.setImageDrawable(activity.getDrawable(R.drawable.ic_trophy));
holder.menuItemTextView.setText(activity.getResources().getString(R.string.item5));
}
return rowView;
}
private static class MenuItemViewHolder {
public ImageView menuItemImageView;
public TextView menuItemTextView;
}
}
SNewsFragment.java (one of the fragment I wanted to link to)
package com.th.ac.sd;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.ng.anthony.mininavigationdrawer.R;
/**
* A simple {#link Fragment} subclass.
*/
public class SNewsFragment extends Fragment {
public SNewsFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_snews, container, false);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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:fitsSystemWindows="true"
tools:context="com.th.ac.sd.MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout android:layout_height="wrap_content"
android:layout_width="match_parent" android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar android:id="#+id/toolbar"
android:layout_width="match_parent" android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary" app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
</LinearLayout>
<android.support.design.widget.FloatingActionButton android:id="#+id/fab"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_gravity="bottom|end" android:layout_margin="#dimen/fab_margin"
android:src="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SlidingPaneLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:id="#+id/layout_main">
<!--Master fragment-->
<fragment
android:name="com.th.ac.sd.MasterFragment"
android:layout_width="220dp"
android:layout_height="match_parent"
android:id="#+id/fragment_master">
</fragment>
<!--Detail layout -->
<FrameLayout
android:layout_width="1000dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_marginLeft="56dp">
</FrameLayout>
</android.support.v4.widget.SlidingPaneLayout>
fragment_master.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/darker_gray"
android:divider="#null">
</ListView>
</LinearLayout>
fragment_snews.xml (one of the fragment I wanted to link to)
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.th.ac.sd.SNewsFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/hello_blank_fragment" />
</FrameLayout>
row_menu_action_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:gravity="center_vertical">
<ImageView
android:id="#+id/menu_item_image_view"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_marginRight="16dp"/>
<TextView
android:id="#+id/menu_item_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
android:textColor="#android:color/white"/>
</LinearLayout>
I don't know which file I should give so I give all the files in my project sorry

override onListItemClick() method from ListFragment on MasterFragment.java . Like
public class MasterFragment extends ListFragment {
public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_master, container);
setListAdapter(new MenuListAdapter(R.layout.row_menu_action_item, getActivity(), MenuActionItem.values()));
return view;
}
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
if(position == 0){
SMSFragment smsFragment = new SMSFragment();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(
R.id.layout_main,
smsFragment,
smsFragment.getTag()
).commit();
}
}
}