getActiveNotifications使用NotificationListenerService时,总是空 [英] getActiveNotifications always null when using NotificationListenerService

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问题描述

我跟着这个的rel="nofollow">样品code和该<一href="https://developer.android.com/reference/android/service/notification/NotificationListenerService.html"相对=nofollow>开发人员指南

我可以:

  • 通话意图这项服务。

  • 可以从通知赶上广播。

所以,我得到了错误 getActiveNotifications总是空

我不知道为什么,

谁认识的人,请大家帮帮我,

谢谢

P / S:这是源$ C ​​$ c和错误,我得到

错误:

  8月4日至28号:46:11.625:E / AndroidRuntime(7651):致命异常:主要
八月四号至28日:46:11.625:E / AndroidRuntime(7651):java.lang.RuntimeException的:接收广播错误意向{行动= app.trekband.NotificationListener FLG = 0×10(有临时演员)}在utils.NotificationListener$NLServiceReceiver@42680780
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.app.LoadedApk $ ReceiverDispatcher $ Args.run(LoadedApk.java:778)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.os.Handler.handleCallback(Handler.java:730)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.os.Handler.dispatchMessage(Handler.java:92)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.os.Looper.loop(Looper.java:176)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.app.ActivityThread.main(ActivityThread.java:5419)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在java.lang.reflect.Method.invokeNative(本机方法)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在java.lang.reflect.Method.invoke(Method.java:525)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1046)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在dalvik.system.NativeStart.main(本机方法)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):由:显示java.lang.NullPointerException
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.os.Parcel.readException(Parcel.java:1437)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.os.Parcel.readException(Parcel.java:1385)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.app.INotificationManager$Stub$Proxy.getActiveNotificationsFromListener(INotificationManager.java:518)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.service.notification.NotificationListenerService.getActiveNotifications(NotificationListenerService.java:149)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在utils.NotificationListener $ NLServiceReceiver.onReceive(NotificationListener.java:73)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):在android.app.LoadedApk $ ReceiverDispatcher $ Args.run(LoadedApk.java:768)
八月四号至28日:46:11.625:E / AndroidRuntime(7651):9 ...更多
 

来源$ C ​​$ C:

我叫的NotificationListener类通过使用这样的:

 私人NotificationReceiver notificationReceiver;
    @覆盖
    公共无效的onCreate(包savedInstanceState){
        super.onCreate(savedInstanceState);

        如果(!Constants.connectivity.isNetworkOnline()){
            //如果有错误
            Toast.makeText(getActivity(),的getString(R.string.toast_failed_connection),
                    Toast.LENGTH_SHORT).show();

            //退出应用程序
            android.os.Process.killProcess(android.os.Process.myPid());
        }

        意向意图=新的意图(getActivity(),NotificationListener.class);

        。getActivity()startService(意向);

        notificationReceiver =新NotificationReceiver();
        IntentFilter的过滤器=新的IntentFilter();

        //添加行为
        filter.addAction(Notification.NOTIFICATION);

        //注册接收器
        。getActivity()registerReceiver(notificationReceiver,过滤器);
    }

    公共类NotificationReceiver扩展的BroadcastReceiver {

        @覆盖
        公共无效的onReceive(上下文的背景下,意图意图){
            字符串临时= intent.getStringExtra(notification_event);

            //目前,该值为NULL
            Log.i(TAG,温度+);
        }
    }
 

这是的NotificationListener 类从 NotificationListenerService

延伸

 公共类的NotificationListener扩展NotificationListenerService {

    私人字符串变量= NotificationListener.class.getSimpleName();
    私人NLServiceReceiver mNLServiceReciver;

    @覆盖
    公共无效的onCreate(){
        super.onCreate();

        Log.i(TAG的onCreate);

        mNLServiceReciver =新NLServiceReceiver();
        IntentFilter的过滤器=新的IntentFilter();
        filter.addAction(Notification.NOTIFICATION);
        registerReceiver(mNLServiceReciver,过滤器);
    }

    @覆盖
    公共无效的onDestroy(){
        super.onDestroy();

        Log.i(TAG的onDestroy);

        unregisterReceiver(mNLServiceReciver);
    }

    @覆盖
    公共无效onNotificationPosted(StatusBarNotification SBN){
        Log.i(TAG,onNotificationPosted);
        Log.i(TAG,ID:+ sbn.getId()+\ t+ sbn.getNotification()tickerText +\ t+ sbn.getPackageName());

        意图I =新的意图(Notification.NOTIFICATION);
        i.putExtra(notification_event,onNotificationPosted:+ sbn.getPackageName()+\ N);
        sendBroadcast(ⅰ);
    }

    @覆盖
    公共无效onNotificationRemoved(StatusBarNotification SBN){
        Log.i(TAG,onNOtificationRemoved);
        Log.i(TAG,ID:+ sbn.getId()+\ t+ sbn.getNotification()tickerText +\ t+ sbn.getPackageName());

        意图I =新的意图(Notification.NOTIFICATION);
        i.putExtra(notification_event,onNotificationRemoved:+ sbn.getPackageName()+\ N);

        sendBroadcast(ⅰ);
    }

    公共类NLServiceReceiver扩展的BroadcastReceiver {

        @覆盖
        公共无效的onReceive(上下文的背景下,意图意图){

            如果(intent.getStringExtra(命令)。等于(clearall)){
                NotificationListener.this.cancelAllNotifications();
            }否则,如果(intent.getStringExtra(命令)。等于(名单)){
                意图I1 =新的意图(Notification.NOTIFICATION);
                i1.putExtra(notification_event,=====================);
                sendBroadcast(I1);

                //错误这里
                Log.i(TAG,getActiveNotifications+ getActiveNotifications());
                Log.i(TAG,长度+ getActiveNotifications()的长度。);

                INT I = 1;
                为(StatusBarNotification SBN:NotificationListener.this.getActiveNotifications()){
                    意图I2 =新的意图(Notification.NOTIFICATION);
                    i2.putExtra(notification_event,我++ sbn.getPackageName()+\ N);
                    sendBroadcast(I 2);
                    我++;
                }

                意图I3 =新的意图(Notification.NOTIFICATION);
                i3.putExtra(notification_event,=====通知列表====);
                sendBroadcast(I3);

            }
        }
    }
}
 

解决方案

在我启用通知访问这个应用程序部分设置 - &GT;安全

我可以从接收到的数据 getActiveNotifications 了。

谢谢

I followed this Sample Code of kpBird and this Developer Guide

I can :

  • Call intent to this service.

  • Can catch Broadcast from Notification.

So I got the error getActiveNotifications always null.

I don't know why,

People who know, please help me,

Thanks,

p/s : Here is source code and error I get.

Error :

04-28 08:46:11.625: E/AndroidRuntime(7651): FATAL EXCEPTION: main
04-28 08:46:11.625: E/AndroidRuntime(7651): java.lang.RuntimeException: Error receiving broadcast Intent { act=app.trekband.NotificationListener flg=0x10 (has extras) } in utils.NotificationListener$NLServiceReceiver@42680780
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:778)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.os.Handler.handleCallback(Handler.java:730)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.os.Handler.dispatchMessage(Handler.java:92)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.os.Looper.loop(Looper.java:176)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.app.ActivityThread.main(ActivityThread.java:5419)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at java.lang.reflect.Method.invokeNative(Native Method)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at java.lang.reflect.Method.invoke(Method.java:525)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at dalvik.system.NativeStart.main(Native Method)
04-28 08:46:11.625: E/AndroidRuntime(7651): Caused by: java.lang.NullPointerException
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.os.Parcel.readException(Parcel.java:1437)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.os.Parcel.readException(Parcel.java:1385)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.app.INotificationManager$Stub$Proxy.getActiveNotificationsFromListener(INotificationManager.java:518)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.service.notification.NotificationListenerService.getActiveNotifications(NotificationListenerService.java:149)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at utils.NotificationListener$NLServiceReceiver.onReceive(NotificationListener.java:73)
04-28 08:46:11.625: E/AndroidRuntime(7651):     at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:768)
04-28 08:46:11.625: E/AndroidRuntime(7651):     ... 9 more

Source Code :

I called NotificationListener class by using this :

private NotificationReceiver notificationReceiver;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        if (!Constants.connectivity.isNetworkOnline()) {
            // If there is error
            Toast.makeText(getActivity(), getString(R.string.toast_failed_connection),
                    Toast.LENGTH_SHORT).show();

            // Exit the application
            android.os.Process.killProcess(android.os.Process.myPid());
        }

        Intent intent = new Intent(getActivity(), NotificationListener.class);

        getActivity().startService(intent);

        notificationReceiver = new NotificationReceiver();
        IntentFilter filter = new IntentFilter();

        // Add action
        filter.addAction(Notification.NOTIFICATION);

        // Register receiver
        getActivity().registerReceiver(notificationReceiver,filter);
    }

    public class NotificationReceiver extends BroadcastReceiver{

        @Override
        public void onReceive(Context context, Intent intent) {
            String temp = intent.getStringExtra("notification_event");

            // CURRENTLY THIS VALUE IS NULL
            Log.i(TAG, temp + "");
        }
    }

This is NotificationListener class which extends from NotificationListenerService

public class NotificationListener extends NotificationListenerService{

    private String TAG = NotificationListener.class.getSimpleName();
    private NLServiceReceiver mNLServiceReciver;

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

        Log.i(TAG, "onCreate");

        mNLServiceReciver = new NLServiceReceiver();
        IntentFilter filter = new IntentFilter();
        filter.addAction(Notification.NOTIFICATION);
        registerReceiver(mNLServiceReciver,filter);
    }

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

        Log.i(TAG, "onDestroy");

        unregisterReceiver(mNLServiceReciver);
    }

    @Override
    public void onNotificationPosted(StatusBarNotification sbn) {
        Log.i(TAG,"onNotificationPosted");
        Log.i(TAG,"ID :" + sbn.getId() + "\t" + sbn.getNotification().tickerText + "\t" + sbn.getPackageName());

        Intent i = new  Intent(Notification.NOTIFICATION);
        i.putExtra("notification_event","onNotificationPosted :" + sbn.getPackageName() + "\n");
        sendBroadcast(i);
    }

    @Override
    public void onNotificationRemoved(StatusBarNotification sbn) {
        Log.i(TAG,"onNOtificationRemoved");
        Log.i(TAG,"ID :" + sbn.getId() + "\t" + sbn.getNotification().tickerText +"\t" + sbn.getPackageName());

        Intent i = new  Intent(Notification.NOTIFICATION);
        i.putExtra("notification_event","onNotificationRemoved :" + sbn.getPackageName() + "\n");

        sendBroadcast(i);
    }

    public class NLServiceReceiver extends BroadcastReceiver{

        @Override
        public void onReceive(Context context, Intent intent) {

            if(intent.getStringExtra("command").equals("clearall")){
                NotificationListener.this.cancelAllNotifications();
            } else if(intent.getStringExtra("command").equals("list")){
                Intent i1 = new Intent(Notification.NOTIFICATION);
                i1.putExtra("notification_event","=====================");
                sendBroadcast(i1);

                // ERROR HERE
                Log.i(TAG, "getActiveNotifications " + getActiveNotifications());
                Log.i(TAG, "length " + getActiveNotifications().length);

                int i=1;
                for (StatusBarNotification sbn : NotificationListener.this.getActiveNotifications()) {
                    Intent i2 = new  Intent(Notification.NOTIFICATION);
                    i2.putExtra("notification_event",i +" " + sbn.getPackageName() + "\n");
                    sendBroadcast(i2);
                    i++;
                }

                Intent i3 = new  Intent(Notification.NOTIFICATION);
                i3.putExtra("notification_event","===== Notification List ====");
                sendBroadcast(i3);

            }
        }
    }
}

解决方案

After I enable this application in Notification Access section in Settings -> Security.

I can received data from getActiveNotifications now.

Thanks,

这篇关于getActiveNotifications使用NotificationListenerService时,总是空的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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