如何獲得ListPopupWindow以使用自定義適配器？

我想在按鈕單擊時顯示ListPopupWindow中顯示一個簡單的字符串數組。然而，我遇到了問題，因爲當我做一些ArrayAdapter<String>或定製的適配器的最小設置時，當我去顯示彈出窗口時，我遇到了資源未發現異常。這裏是我正在使用的代碼（在它之後的堆棧跟蹤）。關於發生了什麼的任何想法？如何獲得ListPopupWindow以使用自定義適配器？

public class AndroidSandboxActivity extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     final Button btn = (Button)findViewById(R.id.btn1); 
     btn.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       showListPopup(btn); 
      } 
     }); 
    } 

    public void showListPopup(View anchor) { 
     ListPopupWindow popup = new ListPopupWindow(this); 
     popup.setAnchorView(anchor); 

     ListAdapter adapter = new MyAdapter(this); 
     popup.setAdapter(adapter); 
     popup.show(); 
    } 

    public static class MyAdapter extends BaseAdapter implements ListAdapter { 
     private final String[] list = new String[] {"one","two","three"}; 
     private Activity activity; 
     public MyAdapter(Activity activity) { 
      this.activity = activity; 
     } 

     @Override 
     public int getCount() { 
      return list.length; 
     } 

     @Override 
     public Object getItem(int position) { 
      return list[position]; 
     } 

     @Override 
     public long getItemId(int position) { 
      return position; 
     } 

     private static int textid = 1234; 
     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      TextView text = null; 
      if (convertView == null) { 
       LinearLayout layout = new LinearLayout(activity); 
       layout.setOrientation(LinearLayout.HORIZONTAL); 

       text = new TextView(activity); 
       text.setId(textid); 
       layout.addView(text); 
       convertView = layout; 
      } else { 
       text = (TextView)convertView.findViewById(textid); 
      } 
      text.setText(list[position]); 
      return convertView; 
     } 
    } 
}

而這裏的堆棧跟蹤（即博格爾斯我想的事情是，它說，它的使用ArrayAdapter時，我用我自己的自定義適配器）：

Thread [<1> main] (Suspended (exception Resources$NotFoundException)) 
    Resources.loadXmlResourceParser(int, String) line: 2047 
    Resources.getLayout(int) line: 853 
    PhoneLayoutInflater(LayoutInflater).inflate(int, ViewGroup, boolean) line: 389 
    ArrayAdapter.createViewFromResource(int, View, ViewGroup, int) line: 375  
    ArrayAdapter.getView(int, View, ViewGroup) line: 366  
    ListPopupWindow$DropDownListView(AbsListView).obtainView(int, boolean[]) line: 2146 
    ListPopupWindow$DropDownListView.obtainView(int, boolean[]) line: 1156 
    ListPopupWindow$DropDownListView(ListView).measureHeightOfChildren(int, int, int, int, int) line: 1261 
    ListPopupWindow.buildDropDown() line: 1083 
    ListPopupWindow.show() line: 517  
    AndroidSandboxActivity.showListPopup() line: 41 
    AndroidSandboxActivity$1.onClick(View) line: 28 
    Button(View).performClick() line: 3122 
    View$PerformClick.run() line: 11942 
    ViewRoot(Handler).handleCallback(Message) line: 587 
    ViewRoot(Handler).dispatchMessage(Message) line: 92 
    Looper.loop() line: 132 
    ActivityThread.main(String[]) line: 4028  
    Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method] 
    Method.invoke(Object, Object...) line: 491 
    ZygoteInit$MethodAndArgsCaller.run() line: 844 
    ZygoteInit.main(String[]) line: 602 
    NativeStart.main(String[]) line: not available [native method]

任何幫助，將不勝感激！

來源

2012-04-03 Kevlar

我想出了爲什麼ArrayAdapter沒有工作;我爲陣列適配器選擇了一個不正確的資源ID，因爲我沒有完全理解ArrayAdapter對於列表視圖的工作方式。使用這個內置的Android資源：

android.R.layout.simple_dropdown_item_1line

在構建數組適配器時，在相關的資源參數中，我能夠讓事情工作。但我不確定上述自定義適配器爲什麼無法正常工作，因爲我上面的代碼中的自定義適配器沒有引用任何特定的ID。我提供的堆棧跟蹤可能來自使用ArrayAdapter的舊版代碼。

來源

2012-04-04 01:35:16 Kevlar

如何獲得ListPopupWindow以使用自定義適配器？

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