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android - 未收到通知的 PendingIntent

转载 作者:行者123 更新时间:2023-11-30 02:47:29 27 4
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我得到了一个 IntentService,它在 onHandleIntent(Intent) 中同步执行一些长时间运行的工作。因此,只要服务运行,我就会显示一个通知。现在我想在用户点击通知后停止服务。

这就是我得到的。创建服务后注册的广播接收器类。当服务完成某些工作时显示的具有待处理 Intent 的通知。

但不知何故,当用户点击通知时,我从来没有得到广播 Intent 。有什么想法吗?

这是可以轻松重复用于测试的部分代码。

public class SyncService extends IntentService
{

private static final String TAG = SyncService.class.getSimpleName();
private static final int NOTIFICATION_REF_ID = 1;

private static final String ACTION_CANCEL = TAG + ".CANCEL";
private CancelReceiver receiver;

public SyncService() {
super(SyncService.class.getSimpleName());
}

private class CancelReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
stopSelf();
}
}

@Override
public void onCreate() {
super.onCreate();

receiver = new CancelReceiver();
IntentFilter filter = new IntentFilter(ACTION_CANCEL);
registerReceiver(receiver, filter);
}

@Override
public void onDestroy() {
super.onDestroy();

if (receiver != null)
unregisterReceiver(receiver);
}

@Override
protected void onHandleIntent(Intent intent) {

Intent cancelIntent = new Intent(this, CancelReceiver.class);
cancelIntent.setAction(ACTION_CANCEL);
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0,
cancelIntent, 0);

// create notification and set pending-intent
Notification.Builder builder = new Notification.Builder(this);
builder.setContentTitle("some caption")
.setContentText("some hint")
.setTicker("some caption").setSmallIcon(R.drawable.ic_action_refresh)
.setOngoing(true).setWhen(System.currentTimeMillis())
.setContentIntent(pendingIntent).setProgress(0, 0, true);

Notification notification;
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1)
notification = builder.getNotification();
else
notification = builder.build();

// show notification
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.notify(SyncService.class.getCanonicalName(), NOTIFICATION_REF_ID,
notification);


// now do some long running work synchronously


// cancel/remove notification
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.cancel(SyncService.class.getCanonicalName(), NOTIFICATION_REF_ID);
}
}

服务是从我的 Activity 中启动的:

        Intent syncIntent = new Intent(this, SyncService.class);
startService(syncIntent);

像这样停止服务的想法来自this post .

最佳答案

改变

Intent cancelIntent = new Intent(this, CancelReceiver.class);

Intent cancelIntent = new Intent();

尽管 onReceive() 将被调用,它调用 stopSelf(),它又调用 onDestroy(),但计划的工作将继续进行,直到完成。要处理这个添加到同步类

private boolean cancelled = false;

onReceive 中设置为 true 并在您的“一些长时间同步运行的工作”中定期检查 cancelled 并中断。

关于android - 未收到通知的 PendingIntent,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24785267/

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