Question

我有一个服务，基本上从0到9循环，每个循环睡眠1000。此服务还会创建显示进度的通知。我想添加一些允许我取消服务的动作。我有以下代码，但它似乎不起作用。

我从以下内容中得出以下结论：

Android Jelly Bean notifications with actions

Android notification .addAction deprecated in api 23

public class FileOperationService extends IntentService {

    public FileOperationService() {
        super("FileOperationService");
    }

    @Override
    protected void onHandleIntent(@Nullable Intent intent) {
        Intent deleteIntent = new Intent(this, CancelFileOperationReceiver.class);
        deleteIntent.putExtra("notification_id",1);
        PendingIntent pendingIntentCancel = PendingIntent.getBroadcast(this, 0, deleteIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationManagerCompat manager = (NotificationManagerCompat.from(this));

        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);

        Intent notificationIntent = new Intent(this, MainActivity.class);
        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Action action = new NotificationCompat.Action.Builder(android.R.drawable.ic_menu_close_clear_cancel, "Cancel", pendingIntentCancel).build();

        builder.setContentIntent(pendingIntent);
        builder.setContentText("In Progress");
        builder.setSmallIcon(R.mipmap.ic_launcher);
        builder.addAction(action);
        builder.setProgress(9, 0, false);

        for (int i = 0; i < 10; i++) {
            Log.d("Service", String.valueOf(i));
            builder.setProgress(9, i, false);

            if (i == 9) {
                builder.setContentTitle("Done");
                builder.setContentText("");
                builder.setProgress(0, 0, false);
                manager.notify(1, builder.build());
            } else {
                manager.notify(1, builder.build());
            }
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }

}


public class CancelFileOperationReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Intent service = new Intent();
        service.setComponent(new ComponentName(context, FileOperationService.class));
        context.stopService(service);
        NotificationManagerCompat manager = (NotificationManagerCompat.from(context));
        manager.cancel(intent.getIntExtra("notification_id",0));

        Log.d("Cancel","true");
    }

}

我可以看到它取消了通知，因为每次单击“取消”时它都会关闭。但是，它似乎不会取消IntentService，因为每个循环都会弹出一个新通知。

Answer 1

当onHandleIntent（）结束时，如果在onHandleIntent（）运行时没有向其发送更多命令，则IntentService会自动停止。因此，您不要自己手动停止IntentService。

如果调用stopSelf（），则会删除在IntentService队列中等待的所有Intent。

如何从通知中取消IntentService？

1 个答案: