So erstellen Sie Listenansicht onItemclicklistener

Question

Ich möchte Listenansicht erstellen. Ich habe den Wert von JSON bekommen. Hier habe ich den Wert von der JSON in ListView, aber ich kann nicht die OnItemclickListener-Methode abrufen. Warum das passiert, weiß ich nicht. Bitte helfen Sie mir meine Codierung wie unten gezeigt.

Logcat zeigt nichts an.

Danke.

<ListView 
    android:id="@+id/contests_listView" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:layout_below="@+id/header" 
    android:focusable="true"> 
</ListView> 

Activity.java

public class Activites_Activity extends CheerfoolznativeActivity { 

private ListView contests_listView; 
private ProgressBar pgb; 
ActivitiesBean bean; 
ArrayList<Object> listActivities; 
ListAdapter adapter; 

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    setContentView(R.layout.activity_listview); 
    setHeader("Activites"); 


    contests_listView = (ListView) findViewById(R.id.contests_listView); 
    pgb = (ProgressBar) findViewById(R.id.contests_progressBar); 
    listActivities = new ArrayList<Object>(); 

    new FetchActivitesTask().execute(); 

} 

public class FetchActivitesTask extends AsyncTask<Void, Void, Void> { 

    int i =0; 
    @Override 
    protected void onPreExecute() { 
     // TODO Auto-generated method stub 
     super.onPreExecute(); 
     pgb.setVisibility(View.VISIBLE); 
    } 

    @Override 
    protected Void doInBackground(Void... params) { 
     // TODO Auto-generated method stub 

     String url = "my json URL"; 
     String strResponse = util.makeWebCall(url); 

     try { 

      //my json logic here   
     } 
     catch (JSONException e) { 

      e.printStackTrace(); 

     } 

     return null; 
    } 

    @Override 
    public void onPostExecute(Void result) { 
     // TODO Auto-generated method stub 
     super.onPostExecute(result); 

     pgb.setVisibility(View.GONE); 
     displayAdapter(); 
    } 
} 

public void displayAdapter() 
{ 
    adapter = new ListAdapter(this, listActivities); 
    contests_listView.setAdapter(adapter); 
    contests_listView.setOnItemClickListener(new OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> arg0, View arg1, 
       int position, long id) { 

      // Toast.makeText(getApplicationContext(),"Title => "+items.get(position), Toast.LENGTH_SHORT).show(); 

      System.out.println("=========== Click"); 
      bean = (ActivitiesBean) adapter.getItem(position); 

      Intent in1 = new Intent(Activites_Activity.this, Activity_display.class); 
      in1.putExtra("ActivityObject", bean); 
      startActivity(in1); 
     } 
    }); 


} 
} 

ich diesen auch

contests_listView.setItemsCanFocus(true); 

Answer 1

starten:

Diese

contests_listView.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView<?> parent, View view,int position, long id) { 
     String item = (String) contests_listView.getItemAtPosition(position); 
     Toast.makeText(this,"You selected : " + item,Toast.LENGTH_SHORT).show();     
    } 
}); 

Answer 2

diesen Code Versuchen verwenden:

protected void onListItemClick(ListView l, View v, int position, long id) { 

super.onListItemClick(l, v, position, id); 

Toast.makeText(this, "message", Toast.LENGTH_LONG).show(); 
} 

Answer 3

Verwendung:

contests_listView.setOnItemClickListener(new AdapaterView.OnItemClickListener() { 

     @Override 
     public void onItemClick(AdapterView<?> arg0, View arg1, 
       int position, long id) { 

      Intent in1 = new Intent(Activites_Activity.this, Activity_display.class); 

      startActivity(in1); 
     } 
    });