runtime error in customAdapter

runtime error in customAdapter - java

I'm trying to create a list of Card view using a custom adapter. I have defined the layout of a single row of list, consisting a card view and imageview/textviews in it, in a separate .xml file. I'm using a custom srrsy adapter. My app crashes when I try to open the activity having list view , giving only an Runtime-exception error.
Error:
AndroidRuntime(2583): at graph.prathya.com.nextstepz.CustomAdapters.PostArrayAdapter.getView(PostArrayAdapter.java:44)
This error is at the line
LayoutInflater li =(LayoutInflater)context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
in custom adapter.
Here is single_card_view.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:id="#+id/ll1">
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:id="#+id/ll2">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_alignParentTop="true"
android:layout_alignParentBottom="true"
android:layout_margin="10dp"
android:id="#+id/imgIcon"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/ll3"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="SampleTitle1"
android:layout_marginTop="10dp"
android:background="#00b5ad"
android:textSize="20dp"
android:gravity="center"
android:padding="5dp"
android:id="#+id/title"
android:textColor="#ffffff"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Sampledisription1"
android:layout_marginTop="10dp"
android:background="#ffffff"
android:textSize="10dp"
android:gravity="center"
android:padding="5dp"
android:id="#+id/desciption"
/>
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
Here is PostArrayAdapter.java
package graph.prathya.com.nextstepz.CustomAdapters;
import android.app.Activity;
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 graph.prathya.com.nextstepz.R;
/**
* Created by Prathya on 5/23/2015.
*/
public class PostArrayAdapter extends ArrayAdapter<Post>{
Context context;
Post data[] =null;
int layoutid;
public PostArrayAdapter(Context context, int layoutid, Post data[]) {
super(context,layoutid);
this.data=data;
this.layoutid=layoutid;
}
private class PostHolder{
ImageView imgIcon;
TextView title,description;
}
#Override
public int getCount(){
return data.length;
}
#Override
public View getView(int Position, View convertView, ViewGroup parent){
PostHolder holder;
View v = convertView;
if(v==null){
LayoutInflater li = LayoutInflater.from(context);/* RunTimeExceptio error at this line of code */
v= li.inflate(layoutid,parent,false);
holder = new PostHolder();
holder.imgIcon = (ImageView)v.findViewById(R.id.imgIcon);
holder.title = (TextView)v.findViewById(R.id.title);
holder.description= (TextView)v.findViewById(R.id.desciption);
v.setTag(holder);
}
else {
holder = (PostHolder)v.getTag();
}
Post post = data[Position];
holder.imgIcon.setImageResource(post.imgIcon);
holder.title.setText(post.title);
holder.description.setText(post.description);
return v;
}
}
Here is activity in which listView lies: HomeScreenAvtivity.java
package graph.prathya.com.nextstepz;
import android.app.Dialog;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.ImageButton;
import android.widget.ListView;
import graph.prathya.com.nextstepz.Communicator.Communicater1;
import graph.prathya.com.nextstepz.CustomAdapters.Post;
import graph.prathya.com.nextstepz.CustomAdapters.PostArrayAdapter;
public class HomeScreenActivity extends ActionBarActivity {
ImageButton passionbtn, eventbtn, projectbtn, groupstudybtn;
Dialog dg;
ListView listView = null;
Post post[] =new Post[] {
new Post(R.drawable.img1,"Cats and Children","Cats can be a fascinating experience for children, but young minds can sometimes confuse a pet for a toy. Teach children how to respect and properly handle your cat for best results."),
new Post(R.drawable.img2,"Android:The Best OS","Android powers hundreds of millions of mobile devices in more than 190 countries around the world.Android’s openness has made it a favorite for consumers."),
new Post(R.drawable.img3,"Beautiful","Monica is an Italian actor and model who started her modelling career at the age of 13 by posing for a local photo enthusiast."),
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_screen);
listView = (ListView)findViewById(R.id.homelist);
listView.setAdapter(new PostArrayAdapter(getApplicationContext(),R.layout.single_card_view,post));
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
if (item.getItemId() == R.id.nxtsignupitem) {
Intent in = new Intent(getApplicationContext(), PostActivity.class);
startActivity(in);
}
if (item.getItemId() == R.id.eventitem1) {
Intent in = new Intent(getApplicationContext(), PostDetailActivity.class);
startActivity(in);
}
if (item.getItemId() == R.id.postitem11) {
dg = new Dialog(HomeScreenActivity.this);
dg.requestWindowFeature(Window.FEATURE_NO_TITLE);
dg.setContentView(R.layout.fragment_new_post_dialogue);
dg.setTitle("Please choose One option");
dg.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
dg.show();
passionbtn = (ImageButton) dg.findViewById(R.id.imageButton1st);
eventbtn = (ImageButton) dg.findViewById(R.id.imageButton2);
projectbtn = (ImageButton) dg.findViewById(R.id.imageButton3);
groupstudybtn = (ImageButton) dg.findViewById(R.id.imageButton4);
passionbtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Communicater1.setpostButtonid(1);
Intent in = new Intent(getApplicationContext(), PostActivity.class);
startActivity(in);
}
});
eventbtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Communicater1.setpostButtonid(2);
Intent in = new Intent(getApplicationContext(), PostActivity.class);
startActivity(in);
}
});
projectbtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Communicater1.setpostButtonid(3);
Intent in = new Intent(getApplicationContext(), PostActivity.class);
startActivity(in);
}
});
groupstudybtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Communicater1.setpostButtonid(4);
Intent in = new Intent(getApplicationContext(), PostActivity.class);
startActivity(in);
}
});
}
return super.onOptionsItemSelected(item);}
#Override
public boolean onCreateOptionsMenu(Menu menu){
// TODO Auto-generated method stub
MenuInflater mi = getMenuInflater();
mi.inflate(R.menu.menu_home_screen, menu);
return super.onCreateOptionsMenu(menu);
} }
XML layout file of HomeScreenActivity
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/DrawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/lord"
android:layout_marginBottom="20dp"
/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/homelist">
</ListView>
</LinearLayout>
</ScrollView>
Post.java used in Adapter
package graph.prathya.com.nextstepz.CustomAdapters;
/**
* Created by Prathya on 5/23/2015.
*/
public class Post {
int imgIcon;
String title,description;
public Post(int imgIcon,String title, String description){
this.imgIcon=imgIcon;
this.title=title;
this.description=description;
}
}

you never assign context in your constructor.
add
this.context = context;
to your constructor

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<androidx.constraintlayout.widget.ConstraintLayout
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Hello friend i have custom listview using arrayadopter in my activity i am using listview on item click listner but problem is that its not working please help me here is my code the tost message which i used in my onitem click listner in my activity is not working what problem is here please tell
my custom layout for listview code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fab="http://schemas.android.com/apk/res-auto"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_margin="0dp"
android:padding="0dp"
android:layout_height="wrap_content">
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android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:layout_width="28dp"
android:layout_height="28dp"
android:id="#+id/versenumber"
android:text="1"
android:background="#drawable/roundedbutton"/>
<TextView
android:layout_width="match_parent"
android:id="#+id/verse"
android:layout_gravity="center|top"
android:layout_height="wrap_content"
android:layout_weight="2"
android:textColor="#color/darkcolor"
android:textSize="20sp"
android:text="#string/versedisplay"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_gravity="top"
android:layout_height="wrap_content"
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<ImageView
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android:paddingTop="-10dp"
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android:textOn="" />
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<LinearLayout
android:layout_width="match_parent"
android:textAlignment="center"
android:layout_gravity="top"
android:layout_height="wrap_content"
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<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".ALLVERSE">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorAccent"
app:popupTheme="#style/AppTheme.PopupOverlay">
<TextView
android:id="#+id/bookname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="20sp"
android:textColor="#ffffff"
android:textStyle="bold"
android:text="ALL VERESE" />
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<ListView
android:layout_below="#+id/toolbar"
android:id="#+id/mylistview"
android:divider="#null"
android:dividerHeight="3dp"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
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xmlns:app="http://schemas.android.com/apk/res-auto"
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android:layout_width="match_parent"
android:layout_height="match_parent"
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<?xml version="1.0" encoding="utf-8"?>
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android:layout_height="match_parent" />
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android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
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package bible.swordof.God;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.support.annotation.NonNull;
import android.support.design.widget.NavigationView;
import android.support.v4.app.Fragment;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.GridView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import es.dmoral.toasty.Toasty;
public class ALLVERSE extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
private ListView listView;
private ArrayList<String>versenumber;
private ArrayList<String>verselist;
private ArrayList<String>id;
private ArrayList<String>refernce;
private DatabaseHelper mDBHelper;
private SQLiteDatabase mDb;
private int booknumber;
private int chapternumber;
private String bookname;
private TextView booknametitle;
private FullverseAdopter adopter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_allverse);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
booknametitle=findViewById(R.id.bookname);
Intent mIntent = getIntent();
booknumber = mIntent.getIntExtra("Boooknumber",0);
chapternumber= mIntent.getIntExtra("Chapternumber", 0);
bookname=mIntent.getStringExtra("Bookname");
booknametitle.setText(bookname.toString() +" "+ chapternumber);
//Toast.makeText(this, ""+bookname, Toast.LENGTH_SHORT).show();
setSupportActionBar(toolbar);
toolbar.setTitle("ALL VERSE");
setSupportActionBar(toolbar);
if (getSupportActionBar() != null) {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
setData();
listView =findViewById(R.id.list);
adopter=new FullverseAdopter(this,R.layout.versedisplayrow,versenumber,verselist,refernce,id);
listView.setAdapter(adopter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(ALLVERSE.this, "LIFE RUNS ON CODE", Toast.LENGTH_SHORT).show();
}
});
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// handle arrow click here
if (item.getItemId() == android.R.id.home) {
onBackPressed();
}
return super.onOptionsItemSelected(item);
}
private void setData() {
versenumber=new ArrayList<>();
verselist=new ArrayList<>();
refernce=new ArrayList<>();
id=new ArrayList<>();
mDBHelper = new DatabaseHelper(this);
mDb = mDBHelper.getReadableDatabase();
Cursor cursor = mDb.rawQuery("SELECT id, v, t from t_kjv where b="+booknumber+" AND c="+chapternumber+";", new String[]{});
if(cursor!=null && cursor.getCount() > 0)
{ if (cursor.moveToFirst())
{
do {
id.add(cursor.getString(0));
versenumber.add(cursor.getString(1));
verselist.add(cursor.getString(2));
refernce.add(bookname+" "+chapternumber);
}
while (cursor.moveToNext());
}
}
}
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
Fragment fragment;
int id = item.getItemId();
if (id == R.id.home) {
Intent intent=new Intent(this,MainActivity.class);
startActivity(intent);
} else if (id == R.id.favoruite)
{ Intent intent=new Intent(this,Favourite.class);
startActivity(intent);
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
My adopter customadopter class:
package bible.swordof.God;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.opengl.Visibility;
import android.preference.PreferenceManager;
import android.speech.tts.TextToSpeech;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;
import com.amulyakhare.textdrawable.TextDrawable;
import com.amulyakhare.textdrawable.util.ColorGenerator;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import es.dmoral.toasty.Toasty;
import petrov.kristiyan.colorpicker.ColorPicker;
import static android.content.Context.MODE_PRIVATE;
import static android.database.sqlite.SQLiteDatabase.CONFLICT_NONE;
import static android.icu.lang.UCharacter.GraphemeClusterBreak.V;
import static android.support.constraint.Constraints.TAG;
import static android.support.v4.content.ContextCompat.createDeviceProtectedStorageContext;
import static android.support.v4.content.ContextCompat.startActivity;
public class FullverseAdopter extends ArrayAdapter<String> {
private ALLVERSE activity;
private List<String> versenumber;
private List<String>verseid;
private List<String> verselist;
private List<String> refernce;
TextToSpeech textToSpeech;
private DatabaseHelper mDBHelper;
private SQLiteDatabase mDb;
private boolean ischeckd;
String My_PREF="MY_PREF";
public String ex="switch";
//check for availabe language
int result;
public FullverseAdopter(ALLVERSE context, int resource, List<String> versenumber, List<String> verselist, List<String> refernce, List<String>verseid) {
super(context, resource, versenumber);
this.activity = context;
this.versenumber = versenumber;
this.verselist = verselist;
this.refernce = refernce;
this.verseid=verseid;
}
#Override
public int getCount() {
return versenumber.size();
}
#Override
public String getItem(int position) {
return versenumber.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, final ViewGroup parent) {
final ViewHolder holder;
LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
// If holder not exist then locate all view from UI file.
if (convertView == null) {
// inflate UI from XML file
convertView = inflater.inflate(R.layout.versedisplayrow, parent, false);
// get all UI view
holder = new ViewHolder(convertView);
// set tag for holder
holder.versenumber = (TextView) convertView.findViewById(R.id.versenumber);
holder.verselist = (TextView) convertView.findViewById(R.id.verse);
holder.addfavoruite=(ToggleButton)convertView.findViewById(R.id.adbookmark);
convertView.setTag(holder);
} else {
// if holder created, get tag from view
holder = (ViewHolder) convertView.getTag();
}
holder.versenumber.setText(versenumber.get(position));
holder.verselist.setText(verselist.get(position));
//verselist highlight
//share verse
holder.share.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toasty.info(activity, "Sharing a verse.", Toast.LENGTH_SHORT, true).show();
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, refernce.get(position) + ":" + versenumber.get(position) + '\n' + verselist.get(position));
sendIntent.setType("text/plain");
activity.startActivity(sendIntent);
}
});
//add in favourite
holder.addfavoruite.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked){
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getWritableDatabase();
ContentValues contentValues=new ContentValues();
contentValues.put("id",verseid.get(position));
contentValues.put("bookname",refernce.get(position));
contentValues.put("versenumber",versenumber.get(position));
contentValues.put("verse",verselist.get(position));
long check=mDb.insert("favourite",null,contentValues);
Log.d("MY_TAG","DB IS NOW "+check);
Toasty.success(activity, "Added in favouite", Toast.LENGTH_SHORT, true).show();
}else {
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getWritableDatabase();
long delete= mDb.delete("favourite","id=?",new String[]{verseid.get(position)});
Toasty.error(activity, "Remove in favouite", Toast.LENGTH_SHORT, true).show();
}
}
});
textToSpeech = new TextToSpeech(activity, new TextToSpeech.OnInitListener() {
#Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
result = textToSpeech.setLanguage(Locale.ENGLISH);
} else {
Toast.makeText(activity, "YOUR DEVICE NOT SUPPORTED", Toast.LENGTH_SHORT).show();
}
}
});
//My toggle button
holder.speakverse.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(activity, "I AM CLICKED", Toast.LENGTH_SHORT).show();
if (result == TextToSpeech.LANG_NOT_SUPPORTED || result == TextToSpeech.LANG_MISSING_DATA) {
Toast.makeText(activity, "Language not supported or Missing", Toast.LENGTH_SHORT).show();
} else {
textToSpeech.speak(verselist.get(position), TextToSpeech.QUEUE_FLUSH, null);
}
}
});
return convertView;
}
static class ViewHolder {
private TextView versenumber;
private TextView verselist;
private ImageView share;
private ToggleButton addfavoruite;
private ImageView speakverse;
public ViewHolder(View v) {
versenumber = (TextView) v.findViewById(R.id.versenumber);
verselist = (TextView) v.findViewById(R.id.verse);
share = (ImageView) v.findViewById(R.id.share);
speakverse = (ImageView) v.findViewById(R.id.speakverse);
addfavoruite=(ToggleButton)v.findViewById(R.id.adbookmark);
}
}
public boolean CheckIsDataAlreadyInDBorNot(String TableName, String dbfield, String fieldValue) {
mDBHelper = new DatabaseHelper(activity);
mDb = mDBHelper.getReadableDatabase();
String Query = "Select * from " + TableName + " where " + dbfield + " = " + fieldValue;
Cursor cursor = mDb.rawQuery(Query, null);
if(cursor.getCount() <= 0){
cursor.close();
Toast.makeText(activity, "false", Toast.LENGTH_SHORT).show();
return false;
}else {
Toast.makeText(activity, "TRUE", Toast.LENGTH_SHORT).show();
}
cursor.close();
return true;
}
public void opecolorpicker(){
ColorPicker colorPicker = new ColorPicker(activity);
ArrayList<String>colors=new ArrayList<>();
colors.add("#FF0000");
colors.add("#FFEC33");
colors.add("#3C33FF");
colors.add("#DA33FF");
colors.add("#33FF99");
colors.add("#90FF33");
colors.add("#DD33FF");
colors.add("#F0B27A");
colors.add("#DAF7A6");
colors.add("#34495E");
colorPicker.setColors(colors).setTitle("HIGHLIGHT VERSE").setRoundColorButton(true).setOnChooseColorListener(new ColorPicker.OnChooseColorListener() {
#Override
public void onChooseColor(int position, int color) {
Toast.makeText(activity, ""+color, Toast.LENGTH_SHORT).show();
}
#Override
public void onCancel() {
}
}).show();
}
}

Use this:
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
Toast.makeText(ALLVERSE.this, "LIFE RUNS ON CODE", Toast.LENGTH_SHORT).show();
}
});
Instead of:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(ALLVERSE.this, "LIFE RUNS ON CODE", Toast.LENGTH_SHORT).show();
}
});

How do I retrieve the ID number of this text view

How do I retrieve the text of a specific textView? BEcause when I click an ID number it displays '1' in the textview of the next class in every text view I click. I used JSON array so it's kind of tricky for me. And yes I'm completely a beginner.
DisplayListView
package rjj.tutorial_jsonandlistview;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class DisplayListView extends AppCompatActivity {
String json_string;
JSONObject jsonObject;
JSONArray jsonArray;
ContactAdapter contactAdapter;
ListView listView;
SearchView sv;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.display_listview_layout);
listView = (ListView)findViewById(R.id.listview);
contactAdapter = new ContactAdapter(this,R.layout.row_layout);
listView.setAdapter(contactAdapter);
json_string = getIntent().getExtras().getString("json_data");
//Searchview
sv = (SearchView)findViewById(R.id.search);
sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
contactAdapter.getFilter().filter(newText);
return true;
}
});
//End of Searchview
try {
jsonObject = new JSONObject(json_string);
jsonArray = jsonObject.getJSONArray("server_response");
int count = 0;
String id ,firstname , surname, age , username, password;
while(count<jsonArray.length()){
JSONObject JO = jsonArray.getJSONObject(count);
id = JO.getString("id");
firstname = JO.getString("firstname");
surname = JO.getString("surname");
age = JO.getString("age");
username = JO.getString("username");
password = JO.getString("password");
Contacts contact = new Contacts(id, firstname, surname, age,username,password);
contactAdapter.add(contact);
count++;
}
} catch (JSONException e) {
e.printStackTrace();
}
}
public void hello(View view) {
Intent intent = new Intent(this, Update.class);
TextView textView = (TextView)findViewById(R.id.tx_id);
String id = textView.getText().toString();
intent.putExtra("id", id);
startActivity(intent);
}
}
My ContactAdapter Class:
package rjj.tutorial_jsonandlistview;
import android.content.Context;
import android.support.annotation.LayoutRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
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.List;
/**
* Created by Julian on 7/20/2017.
*/
public class ContactAdapter extends ArrayAdapter {
List list = new ArrayList();
public ContactAdapter(#NonNull Context context, #LayoutRes int resource) {
super(context, resource);
}
public void add(Contacts object) {
super.add(object);
list.add(object);
}
#Override
public int getCount() {
return list.size();
}
#Nullable
#Override
public Object getItem(int position) {
return list.get(position);
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
View row;
row = convertView;
ContactHolder contactHolder;
if(row == null){
LayoutInflater layoutInflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = layoutInflater.inflate(R.layout.row_layout,parent,false);
contactHolder = new ContactHolder();
contactHolder.tx_id = (TextView)row.findViewById(R.id.tx_id);
contactHolder.tx_firstname = (TextView)row.findViewById(R.id.tx_firstname);
contactHolder.tx_surname = (TextView)row.findViewById(R.id.tx_surname);
contactHolder.tx_age = (TextView)row.findViewById(R.id.tx_age);
contactHolder.tx_username = (TextView)row.findViewById(R.id.tx_username);
contactHolder.tx_password = (TextView)row.findViewById(R.id.tx_password);
row.setTag(contactHolder);
} else{
contactHolder = (ContactHolder)row.getTag();
}
Contacts contacts = (Contacts)this.getItem(position);
contactHolder.tx_id.setText(contacts.getId());
contactHolder.tx_firstname.setText(contacts.getFirstname());
contactHolder.tx_surname.setText(contacts.getSurname());
contactHolder.tx_age.setText(contacts.getAge());
contactHolder.tx_username.setText(contacts.getUsername());
contactHolder.tx_password.setText(contacts.getPassword());
return row;
}
static class ContactHolder{
TextView tx_id, tx_firstname, tx_surname, tx_age, tx_username, tx_password;
}
}
My Update Class:
package rjj.tutorial_jsonandlistview;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
public class Update extends AppCompatActivity {
String id;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_update);
id = getIntent().getExtras().getString("id");
TextView textView = (TextView)findViewById(R.id.textView);
textView.setText(id);
}
}
My display_listview_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<android.widget.RelativeLayout 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="rjj.tutorial_jsonandlistview.DisplayListView">
<SearchView
android:layout_width="match_parent"
android:layout_height="30dp"
android:id="#+id/search"
android:queryHint="Search..."/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/search"
android:id="#+id/listview">
</ListView>
</android.widget.RelativeLayout>
The row_layout.xml (which I use to display the JSON array)
<?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="75dp">
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_id"
android:layout_alignParentLeft="true"
android:text="ID"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
android:onClick="hello"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_firstname"
android:layout_toRightOf="#+id/tx_id"
android:text="Firstname"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_surname"
android:layout_toRightOf="#+id/tx_firstname"
android:text="Lastname"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_age"
android:layout_toRightOf="#+id/tx_surname"
android:text="Age"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_username"
android:layout_toRightOf="#+id/tx_age"
android:text="Username"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
<TextView
android:layout_width="60dp"
android:layout_height="match_parent"
android:id="#+id/tx_password"
android:layout_toRightOf="#+id/tx_username"
android:text="Password"
android:gravity="center"
android:textAppearance="?android:textAppearanceLarge"
/>
</RelativeLayout>

In method hello(View view) you don't need this string:
TextView textView = (TextView)findViewById(R.id.tx_id);
becouse the view in hello(View view) this is our TextView. Just cast it to TextView and get text from it:
String id = ((TextView)view).getText().toString();
Another and most universal approach: to change
TextView textView = (TextView)findViewById(R.id.tx_id);
to
TextView textView = (TextView)((ViewGroup)(view.getParent())).findViewById(R.id.tx_id);
In this way you can use any R.id for current list item.

Display Listview in Fragment

I am working on an Android app with Tab navigation. I have three tabs and I would like to display separate informations on each tab. On the first tab, I would like to display a list of items that are retrieved from an SQlite database. The items are entered through dialogs, which is working well. I keep the logic for the collection and display of data in the Main Activity:
package com.example.TodoList;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.app.AlertDialog;
import android.widget.SimpleCursorAdapter;
import android.database.sqlite.SQLiteDatabase;
import android.location.LocationManager;
import android.net.Uri;
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.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;
import com.example.TodoList.db.TaskContract;
import com.example.TodoList.db.TaskDBHelper;
import com.example.TodoList.fragments.ThreeFragment;
import com.example.TodoList.fragments.TwoFragment;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private ListAdapter listAdapter;
private TaskDBHelper helper;
private Button btnIconTextTabs;
private TabLayout tabLayout;
private ViewPager viewPager;
private int[] tabIcons = {
R.drawable.ic_tab_favourite,
R.drawable.ic_tab_call,
R.drawable.ic_tab_contacts
};
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_icon_text_tabs);
//ListView listView = (ListView) findViewById(R.id.list);
//listView.setAdapter(listAdapter);
updateUI();
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
btnIconTextTabs = (Button) findViewById(R.id.btnIconTextTabs);
//btnIconTextTabs.setOnClickListener(this);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new Fragment(), "ONE");
adapter.addFrag(new TwoFragment(), "TWO");
adapter.addFrag(new ThreeFragment(), "THREE");
viewPager.setAdapter(adapter);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
final EditText inputField = new EditText(this);
builder.setNegativeButton("Cancel", null);
switch (item.getItemId()) {
case R.id.action_add_task:
builder.setTitle("Add an article to your shopping list");
builder.setMessage("What would you like to add?");
builder.setView(inputField);
builder.setPositiveButton("Add", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
String task = inputField.getText().toString();
helper = new TaskDBHelper(MainActivity.this);
SQLiteDatabase db = helper.getWritableDatabase();
ContentValues values = new ContentValues();
values.clear();
values.put(TaskContract.Columns.TASK, task);
db.insertWithOnConflict(TaskContract.TABLE, null, values, SQLiteDatabase.CONFLICT_IGNORE);
updateUI();
}
});
builder.create().show();
return true;
case R.id.action_remove_task:
builder.setTitle("Remove an article from the shopping list");
builder.setMessage("Did you found this article?");
builder.setNegativeButton("Remove", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
String task = inputField.getText().toString();
helper = new TaskDBHelper(MainActivity.this);
SQLiteDatabase db = helper.getWritableDatabase();
ContentValues values = new ContentValues();
values.clear();
updateUI();
}
});
case R.id.action_show_mylocation:
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Log.d("MyTagGoesHere", "This is my log message at the debug level here");
//Intent intent=new Intent(this,LbsGeocodingActivity.class);
//startActivity(intent);
Intent GeoLocationIntent = new Intent(MainActivity.this, GeoActivity.class);
//myIntent.putExtra("key", value); //Optional parameters
MainActivity.this.startActivity(GeoLocationIntent);
}
builder.create().show();
return true;
}
private void updateUI() {
helper = new TaskDBHelper(MainActivity.this);
SQLiteDatabase sqlDB = helper.getReadableDatabase();
Cursor cursor = sqlDB.query(TaskContract.TABLE,
new String[]{TaskContract.Columns._ID, TaskContract.Columns.TASK},
null, null, null, null, null);
listAdapter = new SimpleCursorAdapter(
this,
R.layout.task_view,
cursor,
new String[]{TaskContract.Columns.TASK},
new int[]{R.id.taskTextView},
0
);
}
public void onDoneButtonClick(View view) {
View v = (View) view.getParent();
TextView taskTextView = (TextView) v.findViewById(R.id.taskTextView);
String task = taskTextView.getText().toString();
String sql = String.format("DELETE FROM %s WHERE %s = '%s'",
TaskContract.TABLE,
TaskContract.Columns.TASK,
task);
helper = new TaskDBHelper(MainActivity.this);
SQLiteDatabase sqlDB = helper.getWritableDatabase();
sqlDB.execSQL(sql);
updateUI();
}
public void onSubmitPriceClick(View view) {
Intent SubmitPriceIntent = new Intent(MainActivity.this, SubmitPriceActivity.class);
MainActivity.this.startActivity(SubmitPriceIntent);
}
public void onWebViewButtonClick(View view) {
Intent intent = new
Intent(Intent.ACTION_VIEW,
Uri.parse("http://www.batprice.com:1337"));
startActivity(intent);
finish();
}
public void onGeoLocationButtonClick(View view) {
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Log.d("MyTagGoesHere", "This is my log message at the debug level here");
Intent GeoLocationIntent = new Intent(MainActivity.this, GeoActivity.class);
MainActivity.this.startActivity(GeoLocationIntent);
}
/*#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.btnIconTextTabs:
startActivity(new Intent(MainActivity.this, IconTextTabsActivity.class));
break;
}
}*/
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
This is my First fragment, where I want to display the list items:
package com.example.TodoList.fragments;
import android.content.Context;
import android.database.SQLException;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import com.example.TodoList.R;
import java.util.ArrayList;
public class OneFragment extends FragmentActivity {
public OneFragment() {
// Required empty public constructor
}
private class mylocationlistener implements LocationListener {
#Override
public void onLocationChanged(Location location) {
if (location != null) {
Log.d("LOCATION CHANGED", location.getLatitude() + "");
Log.d("LOCATION CHANGED", location.getLongitude() + "");
Toast.makeText(OneFragment.this,
location.getLatitude() + "" + location.getLongitude(),
Toast.LENGTH_LONG).show();
}
}
#Override
public void onProviderDisabled(String provider) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
LocationListener ll = new mylocationlistener();
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, ll);
return inflater.inflate(R.layout.fragment_one, container, false);
}
/*
public static class OneFragment extends Fragment {
ListView list;
list = (ListView) view.findViewById(R.id.listview);
DataDB data = new DataDB();
ArrayAdapter<String> listAdapter;
public ListDoctorFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.listdoctor, container, false);
ArrayList<String> names = new ArrayList<String>();
try {
names = data.getDoctorlistDB(getActivity());
} catch (SQLException e) {
e.printStackTrace();
}
listAdapter = new ArrayAdapter<String>(getActivity(), R.layout.support_simple_spinner_dropdown_item, names);
// set the adapter
list.setAdapter(listAdapter);
return view;
}
}
*/
}
This is the activity icon text tabs layout file:
<android.support.design.widget.CoordinatorLayout 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">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabGravity="fill"
app:tabMode="fixed" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
This is my main activity layout file:
<android.support.design.widget.CoordinatorLayout 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">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_marginTop="?attr/actionBarSize"
android:orientation="vertical">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="350dp"
android:layout_margin="5dp" />
<Button
android:id="#+id/btnIconTextTabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/btn_icon_text_tabs"
android:textSize="15dp" />
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
This is my main layout file:
<?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="fill_parent"
android:orientation="vertical">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="350dp"
android:layout_margin="5dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="clip_vertical"
android:onClick="onGeoLocationButtonClick"
android:text="Your Location" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="clip_vertical"
android:onClick="onSubmitPriceClick"
android:text="Submit a price" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="clip_vertical"
android:onClick="onScrollViewButtonClick"
android:text="Scrollview" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="clip_vertical"
android:onClick="onWebViewButtonClick"
android:text="Webview" />
<WebView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/webView1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
This is my Fragment one layout file:
<?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="fill_parent"
android:orientation="vertical">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="350dp"
android:layout_margin="5dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="clip_vertical"
android:onClick="onGeoLocationButtonClick"
android:text="Your Location" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="clip_vertical"
android:onClick="onSubmitPriceClick"
android:text="Submit a price" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="clip_vertical"
android:onClick="onScrollViewButtonClick"
android:text="Scrollview" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="clip_vertical"
android:onClick="onWebViewButtonClick"
android:text="Webview" />
<WebView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/webView1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
I would like to display the entered list items - this whole processus is working well - in fragment One, but the list items are not showing up. I don´t get any errors so I´m a bit stuck here. Any help or hints would be very appreciated, thanks.

Adding a remove button in my item list

I am fairly new to Java and Android development. I am currently creating a shopping app and was looking at adding a "Remove" button to my Shopping Cart list.
Here is my current code for my list activity for my shopping cart, I am not really sure where to begin and some guidance would be greatly appreciated.
Thanks
package .shopper;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.support.v4.app.NavUtils;
public class CartListActivity extends ListActivity {
public class ProductListAdapter extends BaseAdapter {
private final Context context;
private List<Product> itemList;
public List<Product> getItemList() {
return itemList;
}
public void setItemList(List<Product> itemList) {
this.itemList = itemList;
}
public Context getContext() {
return context;
}
public ProductListAdapter(Context c) {
context = c;
}
#Override
public int getCount() {
if(itemList == null) return 0;
else return itemList.size();
}
#Override
public Object getItem(int position) {
if (itemList == null) return null;
else return itemList.get(position);
}
#Override
public long getItemId(int position) {
if (itemList == null) return 0;
else return itemList.get(position).hashCode();
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View cell = convertView;
if (cell == null) {
// get layout from mobile xml
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
cell = inflater.inflate(R.layout.adapter_product_list, parent, false);
}
Product p = itemList.get(position);
//set value into textview according to position
TextView textView = (TextView) cell.findViewById(R.id.product_title);
textView.setText(p.getProductName());
// add £ symbol
textView = (TextView) cell.findViewById(R.id.product_info);
textView.setText("Price: " + "£"+ p.getPrice());
//set value into imageview according to position
ImageView imgView = (ImageView) cell.findViewById(R.id.product_image);
// clear the image
imgView.setImageDrawable(null);
//and load from the network
p.loadImage(imgView, 54, 54);
return cell;
}
}
public static final Integer[] productIcons = {
0, // index 0 is empty
R.drawable.books,
R.drawable.films,
R.drawable.music,
R.drawable.games,
};
private int categoryId;
private ProductListAdapter adapter;
private ListViewLoader loader;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// get the category from the intent
Intent intent = getIntent();
categoryId = intent.getIntExtra(MainActivity.SELECTED_CATEGORY, 0);
adapter = new ProductListAdapter(this);
setListAdapter(adapter);
// Show the Up button in the action bar.
setupActionBar();
loader = new ListViewLoader(adapter, categoryId);
loader.execute(String.format(MainActivity.WEBSERVER_GETLIST, categoryId));
}
/**
* Set up the {#link android.app.ActionBar}.
*/
private void setupActionBar() {
getActionBar().setDisplayHomeAsUpEnabled(true);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.product_list, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.show_cart:
//create the intent for the cart activity
Intent intent = new Intent(getApplicationContext(), CartActivity.class);
startActivity(intent);
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
//create an intent
Intent intent = new Intent(this, ProductActivity.class);
Product p = (Product)adapter.getItem(position);
//specify the extra parameters we want to pass
intent.putExtra(MainActivity.SELECTED_CATEGORY, p.getCategoryId());
intent.putExtra(MainActivity.SELECTED_PRODUCTID, p.getProductId());
intent.putExtra(MainActivity.SELECTED_PRODUCTNAME, p.getProductName());
intent.putExtra(MainActivity.SELECTED_PRODUCTPRICE, p.getPrice());
intent.putExtra(MainActivity.SELECTED_SUITABLEFORKIDS, p.getSuitableForKids());
startActivity(intent);
}
}
EDIT:
XML for adapter_product_list
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="8dp">
<ImageView
android:id="#+id/product_image"
android:layout_width="54dp"
android:layout_height="54dp"
android:padding="5dp"
android:layout_alignParentLeft="true" />
<TextView
android:id="#+id/product_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/product_image"
android:layout_alignTop="#+id/product_image"
android:textColor="#446688"
android:textSize="20sp" />
<TextView
android:id="#+id/product_info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/product_image"
android:layout_below="#+id/product_title"
android:textColor="#777777"
android:textSize="16sp"
android:textStyle="italic" />
</RelativeLayout>

Change your xml like following
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="8dp" >
<ImageView
android:id="#+id/product_image"
android:layout_width="54dp"
android:layout_height="54dp"
android:layout_alignParentLeft="true"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/product_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/product_image"
android:layout_toRightOf="#+id/product_image"
android:text="adjkajdjk"
android:textColor="#446688"
android:textSize="20sp" />
<TextView
android:id="#+id/product_info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/product_title"
android:layout_toRightOf="#+id/product_image"
android:text="adjkajdjk"
android:textColor="#777777"
android:textSize="16sp"
android:textStyle="italic" />
<Button
android:id="#+id/delete_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:text="Delete" />
</RelativeLayout>
And in your adapter inside getView() function add this
Button deleteBtn = (Button) findViewById(R.id.delete_btn);
deleteBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v)
{
itemList.remove(position);
notifyDataSetChanged();
}
});

1) hope p.loadImage(imgView, 54, 54); is running in a asyncTask
2) if you want to click on a button in a row of a ListView than you shoudl add the button to your row layout and implent onClickListenr of that button in your getView method of adapter.in onClick method yous hould have:
if(position<itemList.size()){
//TO REMOVE TEM FROM ARRAY LIST
itemList.remove(position);
//TO Update the ListView
notifyDataSetChanged();
}
you can implement a multy line delete,by adding a checkbox in your listRow and adding the positon of the item to be deleted to an arrayList of Integers and after click-ing the delete button you should delete all the items from the imteList and after that call notifyDataSetChanged()
EDIT
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="8dp">
<ImageView
android:id="#+id/product_image"
android:layout_width="54dp"
android:layout_height="54dp"
android:padding="5dp"
android:layout_alignParentLeft="true" />
<TextView
android:id="#+id/product_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/product_image"
android:layout_alignTop="#+id/product_image"
android:textColor="#446688"
android:textSize="20sp" />
<TextView
android:id="#+id/product_info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/product_image"
android:layout_below="#+id/product_title"
android:textColor="#777777"
android:textSize="16sp"
android:textStyle="italic" />
<Button
android:id="#+id/deleteBtn"
android:layout_width="wrap_content
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/product_info"
</RelativeLayout>
you should add this button to your layout, and in getView method of adapter add
Button delete=v.findViewById(R.id.deleteBtn);
delete.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
//THE PART I WROTE ABOVE
}
})

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

runtime error in customAdapter - java

you never assign context in your constructor. add this.context = context; to your constructor

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