如何處理返回按鈕在自定義視圖中在android中？

Question

relativeLayout.setOnKeyListener(new View.OnKeyListener() { 
      @Override 
      public boolean onKey(View v, int keyCode, KeyEvent event) {     
       if(keyCode == KeyEvent.KEYCODE_BACK) {    
         do....something     
       } 
       return false; 
      } 

}

此代碼無效。當我按下後退按鈕時，它不顯示任何響應。請任何人幫助我。在此先感謝......

Answer 1

你幾乎在那裏，但這是你需要做的事。

relativeLayout.setFocusableInTouchMode(true); 
relativeLayout.requestFocus(); 
relativeLayout.setOnKeyListener(new View.OnKeyListener() { 
    @Override 
    public boolean onKey(View v, int keyCode, KeyEvent event) { 

     if (event.getAction() == KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK) { 
       if(You have handled the back press in your View){ return true; } 
       return false; 
     } 
    }); 

Answer 2

@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) { 
if (Integer.parseInt(android.os.Build.VERSION.SDK) > 5 
     && keyCode == KeyEvent.KEYCODE_BACK 
     && event.getRepeatCount() == 0) { 
    Log.d("CDA", "onKeyDown Called"); 
    // do stuff on back key press event 
    return true; 
} 
return super.onKeyDown(keyCode, event); 

}

同樣可以使用的onkeyup根據您的需要重寫方法。