如何在蜂窝/ ics上打开应用程序部件选取器？

Question

我的应用程序具有可显示可添加到主屏幕的应用程序小部件的开始活动。

当用户点击该应用程序窗口小部件时，应用程序应发送意图打开窗口小部件列表。

但我找不到任何打开启动器与小部件列表选择任何意图。可能吗？

Answer 1

static final String EXTRA_CUSTOM_WIDGET = "custom_widget"; 
static final String SEARCH_WIDGET = "search_widget"; 
void pickappWidget(){ 
    int appWidgetId = Launcher.this.mAppWidgetHost.allocateAppWidgetId(); 

    Intent pickIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK); 
    pickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId); 
    // add the search widget 
    ArrayList<AppWidgetProviderInfo> customInfo = 
      new ArrayList<AppWidgetProviderInfo>(); 
    AppWidgetProviderInfo info = new AppWidgetProviderInfo(); 
    info.provider = new ComponentName(getPackageName(), "XXX.YYY"); 
    info.label = getString(R.string.group_widgets); 
    info.icon = R.drawable.ic_allapps; 
    customInfo.add(info); 
    pickIntent.putParcelableArrayListExtra(
      AppWidgetManager.EXTRA_CUSTOM_INFO, customInfo); 
    ArrayList<Bundle> customExtras = new ArrayList<Bundle>(); 
    Bundle b = new Bundle(); 
    b.putString(EXTRA_CUSTOM_WIDGET, SEARCH_WIDGET); 
    customExtras.add(b); 
    pickIntent.putParcelableArrayListExtra(
      AppWidgetManager.EXTRA_CUSTOM_EXTRAS, customExtras); 
    // start the pick activity 
    startActivityForResult(pickIntent, REQUEST_PICK_APPWIDGET); 
} 

，并在你的onActivityResult函数，过程从部件选择对话框消息retur

protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    mWaitingForResult = false; 
    if (resultCode == RESULT_OK && mAddItemCellInfo != null) { 
     switch (requestCode) { 
      case REQUEST_PICK_APPWIDGET: 
       addAppWidget(data); 
       break; 
     } 
} 


void addAppWidget(Intent data) { 

    int appWidgetId = data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1); 
    AppWidgetProviderInfo appWidget = mAppWidgetManager.getAppWidgetInfo(appWidgetId); 

    if (appWidget.configure != null) { 
     // Launch over to configure widget, if needed 
     Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE); 
     intent.setComponent(appWidget.configure); 
     intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId); 

     startActivityForResult(intent, REQUEST_CREATE_APPWIDGET); 
    } else { 
     // Otherwise just add it 
     onActivityResult(REQUEST_CREATE_APPWIDGET, Activity.RESULT_OK, data); 
    } 
}