Android:NotificationListenerService 未再次创建

Question

应用程序第一次因为一些错误而崩溃后，再次创建并绑定(bind)了 NLService，但是在第 2 次或第 3 次之后......，不再创建和绑定(bind) NLService，即使是复选框

设置 > 安全 > 通知访问

勾选了，这种情况怎么办？

网络服务:

import android.content.Intent;
import android.os.IBinder;
import android.service.notification.NotificationListenerService;
import android.service.notification.StatusBarNotification;
import android.util.Log;

public class NLService extends NotificationListenerService {
  private String TAG = this.getClass().getSimpleName();
  @Override
  public void onCreate() {
    super.onCreate();
    Log.d(TAG, "==onCreate==");
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    Log.d(TAG, "==onDestroy==");
  }

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

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

  @Override public int onStartCommand(Intent intent, int flags, int startId){
    Log.d(TAG, "==onStartCommand==");
    return super.onStartCommand(intent, flags, startId);
  }

  @Override public IBinder onBind(Intent intent) {
    Log.d(TAG, "==onBind==");
    return super.onBind(intent);
  }

  @Override public void onRebind(Intent intent) {
    super.onRebind(intent);
    Log.d(TAG, "==onRebind==");
  }

  @Override public boolean onUnbind(Intent intent) {
    Log.d(TAG, "==onUnbind==");
    return super.onUnbind(intent);
  }
}

并在manifest.xml中注册

<service android:name="com.kpbird.nlsexample.NLService"
         android:label="@string/app_name"
         android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
        <intent-filter>
            <action android:name="android.service.notification.NotificationListenerService" />
        </intent-filter>
</service>

Answer 1

还有问题吗？

我处于同样的情况，这个 NLService 似乎不会协作......

作为一个“伪”解决方法，我注意到如果您在调试 session 期间选中和取消选中 Settings > Security > Notification access 并在 onCreate 中放置一个断点() 您可以在服务启动时进行拦截，但不太清楚为什么有时会停止...

另一种可能性是重启设备...

试试吧，也许你会找到解决的方法，我还在努力...

更新

也许服务中发生了一些变化。这是我在多个设备上运行的测试(我已经尝试了好几天)。

安装应用程序后，您可以在设置中启用通知访问权限，然后您可以尝试使用代码。

build.gradle 文件

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
       applicationId "your_application_id"
       minSdkVersion 18
       targetSdkVersion 23
       versionCode 1
      versionName "1.0"
}
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:design:23.1.1'
}

AndroidManifest.xml文件
这里我们声明并添加带有NotificationListener的服务(我们创建的类名)

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="insert_your_package">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".AMain"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service
            android:name=".NotificationListener"
            android:label="@string/app_name"
            android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
            <intent-filter>
                <action android:name="android.service.notification.NotificationListenerService" />
            </intent-filter>
        </service>
    </application>

</manifest>

AMain.java文件

package insert_your_package;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

public class AMain extends AppCompatActivity {

    protected TextView textView;
    protected NotificationReceiver notificationReceiver;

    @Override

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.a_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });

        textView = (TextView) findViewById(R.id.textview);

        notificationReceiver = new NotificationReceiver();

        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction("com.dev.name.test");

        registerReceiver(notificationReceiver, intentFilter);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    class NotificationReceiver extends BroadcastReceiver {

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

            String temp = intent.getStringExtra("notification_event") + "\n" + textView.getText();

            textView.setText(temp);
        }
    }
}

NotificationListener.java文件

package insert_your_package;

import android.content.Intent;
import android.service.notification.NotificationListenerService;
import android.service.notification.StatusBarNotification;
import android.util.Log;

public class NotificationListener extends NotificationListenerService {

    private String TAG = this.getClass().getSimpleName();

    @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("com.dev.name.test");
        i.putExtra("notification_event", sbn.getPackageName() + " posted");

        sendBroadcast(i);
    }

    @Override
    public void onNotificationRemoved(StatusBarNotification sbn) {

        Log.i(TAG, "**********  onNotificationPosted");
        Log.i(TAG, "ID :" + sbn.getId() + "\t" + sbn.getNotification().tickerText + "\t" + sbn.getPackageName());

        Intent i = new Intent("com.dev.name.test");
        i.putExtra("notification_event", sbn.getPackageName() + " removed");

        sendBroadcast(i);
    }

    @Override
    public void onDestroy() {

        super.onDestroy();
    }
}

如您所见，文本添加了发生的每个已发布或已删除的通知。现在服务可以正常工作了，我们可以做我们想要的了。

尝试并判断它是否有效。