Android: Как сделать интерактивный ListView с ContextMenu?

Question

У меня есть clickable ListView и попытайтесь создать контекстное меню для элементов, но если я получу длинный щелчок, то первый раз он активирует метод onListItemClick. В следующий раз это сработает. Если я активирую контекстное меню с openContextMenu, он выбрасывает StackOverflowError.

Я решил свою проблему! См. В конце этого сообщения.

Моя активность:

@Override 
public void onCreate(Bundle icicle) { 

    super.onCreate(icicle); 
    setContentView(R.layout.search); 

    getWords(getIntent());  
} 

@Override 
protected void onListItemClick(ListView l, View v, int position, long id) { 
     super.onListItemClick(l, v, position, id); 
     String lemma = (item.get(position)); 

     Intent intent = new Intent(this, EntryActivity.class) 
      .putExtra(CL.DOC, doc) 
      .putExtra(CL.ENTRY, lemma); 
    startActivity(intent); 
} 

public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 
    super.onCreateContextMenu(menu, v, menuInfo); 
    menu.setHeaderTitle("Eintrag"); 
    getMenuInflater().inflate(R.menu.context, menu); 
} 

public boolean onContextItemSelected(MenuItem item) { 
    //TODO: switch 
    return super.onContextItemSelected(item); 
} 

private void getWords(Intent intent) { 
    doc = (CLDocument)intent.getSerializableExtra(CL.DOC); 
    item = doc.getEntries(); 

    ArrayAdapter<String> fileList = 
     new ArrayAdapter<String>(this, R.layout.row, item); 
    setListAdapter(fileList); 

    getListView().setOnItemLongClickListener(new OnItemLongClickListener() {  
     @Override 
     public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { 
      registerForContextMenu(view); 
      //openContextMenu(view);   
      return false; 
     } 
    }); 
} 

Мой Layout (search.xml):

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" > 

    <EditText 
     android:id="@+id/edit_search" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:imeOptions="actionSearch" 
     android:inputType="text" 
     android:singleLine="true" /> 

    <ListView 
     android:id="@android:id/list" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     /> 

    <TextView 
     android:id="@android:id/empty" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:text="@string/nowords" 
     /> 

</LinearLayout> 

редактировать: Вот LogCat если я активировать openContextMenu:

04-17 11:31:06.103: D/dalvikvm(279): GC_FOR_MALLOC freed 5691 objects/348744 bytes in 65ms 
04-17 11:31:08.553: I/dalvikvm(279): threadid=1: stack overflow on call to Landroid/widget/AbsListView;.showContextMenuForChild:ZL 
04-17 11:31:08.553: I/dalvikvm(279): method requires 36+20+24=80 bytes, fp is 0x42089340 (64 left) 
04-17 11:31:08.564: I/dalvikvm(279): expanding stack end (0x42089300 to 0x42089000) 
04-17 11:31:08.564: I/dalvikvm(279): Shrank stack (to 0x42089300, curFrame is 0x4208beb8) 
04-17 11:31:08.573: D/AndroidRuntime(279): Shutting down VM 
04-17 11:31:08.573: W/dalvikvm(279): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 
04-17 11:31:08.703: D/dalvikvm(279): GC_FOR_MALLOC freed 7370 objects/493888 bytes in 50ms 
04-17 11:31:08.733: E/AndroidRuntime(279): FATAL EXCEPTION: main 
04-17 11:31:08.733: E/AndroidRuntime(279): java.lang.StackOverflowError 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.view.View.showContextMenu(View.java:2444) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.app.Activity.openContextMenu(Activity.java:2390) 
04-17 11:31:08.733: E/AndroidRuntime(279): at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99) 
04-17 11:31:08.733: E/AndroidRuntime(279): at android.widget.AbsListView.showC 
04-17 11:31:08.823: D/dalvikvm(279): GC_FOR_MALLOC freed 3648 objects/486736 bytes in 50ms 

Я изменил методы getWords и onCreateContextMenu и теперь это работает:

private void getWords(Intent intent) { 
    doc = (CLDocument)intent.getSerializableExtra(CL.DOC); 
    item = doc.getEntries(); 

    ArrayAdapter<String> fileList = 
      new ArrayAdapter<String>(this, R.layout.row, item); 
    setListAdapter(fileList); 

    registerForContextMenu(getListView()); 

//  getListView().setOnItemLongClickListener(new OnItemLongClickListener() {  
//   @Override 
//   public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { 
//    registerForContextMenu(view); 
//      
//    return false; 
//   } 
//  }); 


} 

public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 
    super.onCreateContextMenu(menu, v, menuInfo); 
    AdapterView.AdapterContextMenuInfo info = 
      (AdapterView.AdapterContextMenuInfo)menuInfo; 
    menu.setHeaderTitle(item.get(info.position)); 
    getMenuInflater().inflate(R.menu.context, menu); 

} 

Так спасибо всем, кто пытался мне помочь!

Answer 1

Вы должны позвонить registerForContextMenu с помощью своего ListView в качестве параметра в обратном вызове onCreate() активности.

Answer 2

Здесь: getListView().setOnItemLongClickListener(...) после длинного щелчка вы регистрируетесь для контекстного меню (registerForContextMenu(view)), поэтому он будет работать только в следующий раз. Однако, если вы хотите, чтобы контекстное меню работало с самого начала, вы должны вызывать это раньше, например, перед этим метод registerForContextMenu(getListView()).