IntentService创建的通知总是使用错误的意图

Question

当用户按下发送“按钮1”（向下滚动查看应用程序的构造）时，将从刷新服务创建一个新的通知。如果用户按下此通知，MainActivity实例将启动，并在intent上接收具有值按钮1的字符串。

将显示该值。

当用户立即按下发送“按钮2”时，将从刷新服务创建一个新的通知。如果用户按下此通知，MainActivity实例将启动，并接收一个字符串，该字符串还带有按钮1的值，位于intent上。

获得第二个按钮值的唯一解决办法是重新启动电话并先按下第二个按钮。即使强行接近也不起作用。

我知道我也可以用另一种方式改变UI。但是我需要在一个应用程序中使用这种方法，我需要用另一个intent重新启动“mainactivity”，所以方法应该是一样的。

>

称为mainactivity的活动

public class MainActivity extends Activity implements View.OnClickListener {
    public static final String RECEIVED = "received";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ((TextView)findViewById(R.id.textView_received)).setText(getIntent().getStringExtra(RECEIVED));

        findViewById(R.id.button_1).setOnClickListener(this);
        findViewById(R.id.button_2).setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        Intent intent = new Intent(this, RefreshService.class);

        if(v.getId() == R.id.button_1){
            intent.putExtra(RECEIVED, "Button 1");
            Toast.makeText(this,"Sent \"Button 1\"",Toast.LENGTH_LONG).show();
        }
        else if(v.getId() == R.id.button_2){
            intent.putExtra(RECEIVED, "Button 2");
            Toast.makeText(this,"Sent \"Button 2\"",Toast.LENGTH_LONG).show();
        }

        startService(intent);
    }
}

public class RefreshService extends IntentService {
    public RefreshService() {
        super("RefreshService");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        String received = intent.getStringExtra(MainActivity.RECEIVED);

        Intent notificationIntent = new Intent(this, MainActivity.class);
        notificationIntent.putExtra(MainActivity.RECEIVED, received);
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(this).setContentTitle("IntentServiceRefresh").setContentText(received).setSmallIcon(R.drawable.ic_notification_small).setContentIntent(pendingIntent);
        Notification notification = builder.build();

        // Hide the notification after it's selected
        notification.flags |= Notification.FLAG_AUTO_CANCEL;

        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(0, notification);
    }
}

Answer 1

我的怀疑是，由于意图中唯一改变的是附加项，所以PendingIntent.getActivity(...)工厂方法只是将旧意图重新用作优化。

在RefreshService中,尝试：

PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT);

参见：