Question

问题

当用户按发送“按钮1”（向下滚动以查看应用程序的构造）时，将从RefreshService创建新的Notification。如果用户按下此通知，MainActivity实例就会启动，并在String上收到值Button 1的{{3}}。

显示此值。

当用户现在按下发送“按钮2”时，会从RefreshService创建新的Intent。如果用户按下此通知，MainActivity实例就会启动，并在Notification上收到值Button 1的{{3}} ALSO 。

你可以猜测，通常应该有值Button 2。

当用户按下的第一个按钮是发送“按钮2”时，将会发送所有Button 2个。{/ p>

获取第二个按钮值的唯一方法是重新启动手机并先按第二个按钮。即使用力关闭也行不通。

我知道我也可以用另一种方式更改UI。但我需要在应用程序中使用此方法，我需要使用另一个String重新启动'MainActivity'，因此方法应该相同。

建筑

名为MainActivity

Intent

名为RefreshService

Intent

MainActivity

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);
    }
}

RefreshService

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);
    }
}

应用布局
App Layout

Answer 1

我怀疑，因为Intent中唯一改变的是额外内容，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);

请参阅：

http://developer.android.com/reference/android/app/PendingIntent.html#FLAG_CANCEL_CURRENT

IntentService创建的通知始终使用错误的Intent

问题

建筑

1 个答案: