无法在onNewIntent（）中显示警报

Question

我在onNewIntent(Intent intent)函数中显示警报时遇到问题。等待意图额外检索正确，它的值按预期记录，但不显示警报。

@Override 
protected void onNewIntent(Intent intent) { 
    super.onNewIntent(intent); 

    Bundle extras = getIntent().getExtras(); 
    if(extras !=null) { 
     String value = extras.getString("message"); 
     Log.v("alert", value); // <--- this line works fine. 


     AlertDialog alertDialog = new AlertDialog.Builder(this).create(); 
     alertDialog.setTitle("title"); 
     alertDialog.setMessage(value); 
     alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() { 

      public void onClick(DialogInterface dialog, int which) { 


      } 
     }); 

     alertDialog.show(); 
    } 
} 

Answer 1

尝试这种情况：

AlertDialog alertDialog = new AlertDialog.Builder(YourActivity.this).create();