活動組Android

Question

我正在使用活動組來顯示每個意圖中的tabview。但是當我按回來按鈕它再次編譯父活動。所以我必須等待它。我應該如何設置我的 OnBackPressed（）函數來直接打開私有類。這是代碼：

public class TabGroupActivity extends ActivityGroup { 

    private ArrayList<String> mIdList; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState);  
     if (mIdList == null) mIdList = new ArrayList<String>(); 
    } 


    @Override 
    public void finishFromChild(Activity child) { 
     LocalActivityManager manager = getLocalActivityManager(); 
     int index = mIdList.size()-1; 

     if (index < 1) { 
      finish(); 
      return; 
     } 

     manager.destroyActivity(mIdList.get(index), true); 
     mIdList.remove(index); index--; 
     String lastId = mIdList.get(index); 
     Intent lastIntent = manager.getActivity(lastId).getIntent(); 
     Window newWindow = manager.startActivity(lastId, lastIntent); 
     setContentView(newWindow.getDecorView()); 
    } 


    public void startChildActivity(String Id, Intent intent) {  
     Window window = getLocalActivityManager().startActivity(Id,intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)); 
     if (window != null) { 
      mIdList.add(Id); 
      setContentView(window.getDecorView()); 
     }  
    } 


    @Override 
    public boolean onKeyDown(int keyCode, KeyEvent event) { 
     if (keyCode == KeyEvent.KEYCODE_BACK) { 
      //preventing default implementation previous to android.os.Build.VERSION_CODES.ECLAIR 
      return true; 
     } 
     return super.onKeyDown(keyCode, event); 
    } 


    @Override 
    public boolean onKeyUp(int keyCode, KeyEvent event) { 
     if (keyCode == KeyEvent.KEYCODE_BACK) { 
      onBackPressed(); 
      return true; 
     } 
     return super.onKeyUp(keyCode, event); 
    } 


    @Override 
    public void onBackPressed () { 
     int length = mIdList.size(); 
     if (length > 1) { 
      Activity current = getLocalActivityManager().getActivity(mIdList.get(length-1)); 
      current.finish(); 
     } 
     else{ 
      finish(); 
     } 
    } 
} 

幫助plsss。

Answer 1

更改方法finishFromChild如下

@Override 
public void finishFromChild(Activity child) { 
    LocalActivityManager manager = getLocalActivityManager(); 
    int index = mIdList.size()-1; 

    if (index < 1) { 
     finish(); 
     return; 
    } 

    manager.destroyActivity(mIdList.get(index), true); 
    mIdList.remove(index); index--; 
    String lastId = mIdList.get(index); 
    Intent lastIntent = manager.getActivity(lastId).getIntent(); 
    lastIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT); 
    Window newWindow = manager.startActivity(lastId, lastIntent); 
    setContentView(newWindow.getDecorView()); 

}