即使被onClick解雇，AlertDialog仍然可见

Question

警报对话框是可见的，直到startVibrate（）方法完成其任务但我想在单击确定后立即将其关闭

   AlertDialog.Builder builder = new Builder(VibrationActivity.this);
            builder.setCancelable(false);
            builder.setTitle("Vibration Test");
            builder.setMessage("Your device will vibrate now.");
            builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();   //Dismiss the dialog
                    startVibration();       //Start the test
                }
            });
            builder.show();

    public void startVibration(){
      for (int i = 1; i <= 5; i++) {
         try {
              vibrator.vibrate(500); // Vibration time in milliseconds
              Thread.sleep(750); // Interval between two vibration
         } catch (InterruptedException e) {
           e.printStackTrace();
        }
    }
    }

Answer 1

您应该在Activity中启动AlertDialog。你的Thread应该通过一个处理程序向Activity发送一条消息，知道何时显示和关闭你的Dialog。

Answer 2

首先调用startVibrate方法然后关闭对话框，更好地调用cancel而不是dismiss。