無法清除所有以前的活動，並跳出應用

Question

我叫

Intent intent = new Intent(activity, Main_AllLatestNews.class); 
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
activity.startActivity(intent); 

然而，當我在Main_AllLatestNews類單擊後退按鈕，它應該走出的應用程序，而不是回到以前的活動。

Answer 1

在活動d使用代碼如下所示

public boolean onKeyDown(int keyCode, KeyEvent event) { 
    if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) { 
     // do something on back. 
     this.finish(); 
     Intent i = new Intent(Dactivity.this, AActivity.class); 
     i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
     startActivity(i); 
     return true; 
    } 

    return super.onKeyDown(keyCode, event); 
} 

Answer 2

Backpressed destroy the current activity 

public boolean onKeyDown(int keyCode, KeyEvent event) { 
     if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) { 
      // do something on back. 
      this.finish(); 
      Intent intent = new Intent(activity, Main_AllLatestNews.class); 

      startActivity(intent); 
      return true; 
     } 

     return super.onKeyDown(keyCode, event); 
    } 

Answer 3

試試這個：

Intent intent = new Intent(activity, Main_AllLatestNews.class); 
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
activity.startActivity(intent); 
activity.finish();