Oreo：广播接收器不工作

Question

每当用户拨打新电话时，我都会尝试在我的应用程序上触发通知。我在我的活动中注册接收器并在 onDestroy() 方法中销毁它。以下是注册的代码sn-ps

registerReceiver(inComingCall = new IncomingCall(),new IntentFilter("android.intent.action.PHONE_STATE"));

我面临的问题是广播接收器的覆盖 onReceive() 方法中没有任何触发器。请让我知道是否有任何新的实现或我应该做的单独的方式来接收广播，特别是对于奥利奥。

提前致谢。

Answer 1

我遇到这个问题很长时间了。每个人都会为你提供一个谷歌开发者网站的链接，它只描述了他们对后台服务的限制；没有适当的文档，也没有向开发人员展示如何在 Oreo 或更高版本上实现它的示例代码。即使在 stack-Overflow 上，您也只能找到指向 google 开发者网站的链接。

---

我希望您或其他开发人员会发现这对您很有帮助。

---

仍有一些排除项，例如 NEW_OUTGOING_CALL 或 BOOT_COMPLETED，您仍然可以在清单中使用它们。但在应用程序上下文中实现运行时是一个很好的做法。我希望我的PHONE_STATE 随时准备好接听来电；每次重启时也是如此......

---

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

<uses-sdk
    android:minSdkVersion="16"
    android:targetSdkVersion="26" />

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

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

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

    <receiver
        android:name=".MyReceiver"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

    <service
        android:name=".CatchNumbers"
        android:enabled="true"
        android:exported="true" />
    <service
        android:name=".WatchMan"
        android:enabled="true"
        android:exported="true"></service>
</application>

</manifest>

---

在上面的 manifest.xml 中，我没有放置 WRITE_EXTERNAL_STORAGE 和 READ_EXTERNAL_STORAGE。当我在运行时实现它时，它已由 android studio 自动插入。

---

这是我的 OnBoot 接收器：

package com.example.rushi.boottest;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.util.Log;
import android.widget.Toast;

public class MyReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent)
{
    Log.d("BootTest : ", "\nOnBootReceiver - Received a broadcast!");
    Toast.makeText(context, "OnBootReceiver Received a broadcast!!", Toast.LENGTH_LONG).show();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
    {
        context.startForegroundService(new Intent(context, WatchMan.class));
    }
    else
    {
        context.startService(new Intent(context, WatchMan.class));
    }
}
}

---

这是 WatchMan.java 一个实现接收器运行时的前台服务

public class WatchMan extends Service
{
NotificationManager mNotifyManager;
NotificationCompat.Builder mBuilder;
NotificationChannel notificationChannel;
String NOTIFICATION_CHANNEL_ID = "17";

private BroadcastReceiver mCallBroadcastReceiver = new BroadcastReceiver()
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        String PhoneNumber = "UNKNOWN";
        Log.d("RECEIVER :  ","IS UP AGAIN....");

        try
        {
            String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
            if(state == null)
            {
                PhoneNumber = "UNKNOWN";
            }
            else if (state.equals(TelephonyManager.EXTRA_STATE_RINGING))
            {
                PhoneNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
                Log.d("RECEIVER : ","Incoming number : "+PhoneNumber);
            }
            if(intent.getAction().equals("android.intent.action.NEW_OUTGOING_CALL"))
            {
                PhoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
                Log.d("RECEIVER : ","Outgoing number : "+PhoneNumber);
            }
            if(!PhoneNumber.contentEquals("UNKNOWN"))
            {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
                {
                    context.startForegroundService(new Intent(context, CatchNumbers.class));
                }
                else
                {
                    context.startService(new Intent(context, CatchNumbers.class));
                }
            }
        }
        catch (Exception e)
        {
            e.printStackTrace();
            Log.e("RECEIVER : ", "Exception is : ", e);
        }
    }
};

public WatchMan() { }

@Override
public void onCreate()
{
    super.onCreate();
    Log.d("WatchMan : ", "\nOnCreate...");

    IntentFilter CallFilter = new IntentFilter();
    CallFilter.addAction("android.intent.action.NEW_OUTGOING_CALL");
    CallFilter.addAction("android.intent.action.PHONE_STATE");
    this.registerReceiver(mCallBroadcastReceiver, CallFilter);

    Log.d("WatchMan : ", "\nmCallBroadcastReceiver Created....");

    mNotifyManager = (NotificationManager) getApplicationContext().getSystemService(NOTIFICATION_SERVICE);
    mBuilder = new NotificationCompat.Builder(this, null);
    mBuilder.setContentTitle("Insta Promo")
            .setContentText("Checking New Numbers")
            .setTicker("Checking New Numbers")
            .setSmallIcon(R.drawable.ic_launcher_background)
            .setPriority(Notification.PRIORITY_LOW)
            .setDefaults(Notification.DEFAULT_ALL)
            .setVisibility(Notification.VISIBILITY_PUBLIC)
            .setOngoing(true)
            .setAutoCancel(false);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
    {
        notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "My Notifications", NotificationManager.IMPORTANCE_HIGH);

        // Configure the notification channel.
        notificationChannel.setDescription("Channel description");
        notificationChannel.enableLights(true);
        notificationChannel.setLightColor(Color.RED);
        notificationChannel.setVibrationPattern(new long[]{0, 1000, 500, 1000});
        notificationChannel.enableVibration(true);
        notificationChannel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
        mNotifyManager.createNotificationChannel(notificationChannel);

        mBuilder.setChannelId(NOTIFICATION_CHANNEL_ID);
        startForeground(17, mBuilder.build());
    }
    else
    {
        mBuilder.setChannelId(NOTIFICATION_CHANNEL_ID);
        //startForeground(17, mBuilder.build());
        mNotifyManager.notify(17, mBuilder.build());
    }
}

@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
    Log.d("WatchMan : ", "\nmCallBroadcastReceiver Listening....");

    //return super.onStartCommand(intent, flags, startId);

    return START_NOT_STICKY;
}

@Override
public void onDestroy()
{
    this.unregisterReceiver(mCallBroadcastReceiver);
    Log.d("WatchMan : ", "\nDestroyed....");
    Log.d("WatchMan : ", "\nWill be created again....");
}

@Override
public IBinder onBind(Intent intent)
{
    // TODO: Return the communication channel to the service.
    throw new UnsupportedOperationException("Not yet implemented");
}
}

---

现在在接收者调用之前将电话号码插入sqlite数据库表；这样您就可以从 CatchNumbers.java 服务中读取它，并对传入和传出的号码执行任何您想要的操作。希望对您或其他人有所帮助

Answer 2

Sandhya Sasane 的解决方案在 android 9 模拟器上为我工作，收到 BOOT_COMPLETED 通知（通过“adb”强制或重新启动模拟器）。

但在真机上搭载 EMUI 9.1.0.119 的华为 P-Smart 永远不会发生 :(

Answer 3

以上答案似乎都不适合我。 这是我的解决方案，但在 kotlin 中。粘贴以下代码部分并根据您的应用更改必要的详细信息。

在Mainactivity中的onCreate方法之后：

override fun onStart() {
    super.onStart()
    var intentfilter1: IntentFilter = IntentFilter("com.spotify.music.playbackstatechanged")

    intentfilter1.addCategory(Intent.CATEGORY_DEFAULT)
    registerReceiver(mreceiver, intentfilter1)


}

override fun onStop() {
    super.onStop()
    unregisterReceiver(mreceiver)
}

在 onCreate 方法中：

mreceiver = SpotifyBroadcastReceiver()

在 MainAvtivity 中 onCreate 方法之前：

lateinit var mreceiver: SpotifyBroadcastReceiver

Mainfest.xml 文件

     <receiver android:name=".SpotifyBroadcastReceiver" //name of the broadcast receiver class
        android:permission="android.permission.RECEIVE_BOOT_COMPLETED"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="com.spotify.music.playbackstatechanged" /> //Things required by my broadcast receiver class
        </intent-filter>
    </receiver>

如果我错过了什么或者您需要一些与 sn-p 相关的其他信息，请告诉我。

P.S：我也是 kotlin 的新手......我只是分享对我有用的东西。它可能适用于您的配置，也可能不适用于您的配置，祝您编码愉快！

Answer 4

我也遇到过这种问题，但我找到了更好的解决方案：

@BroadcastReceiverActions({"android.intent.action.SCREEN_ON", "android.intent.action.SCREEN_OFF",
        "android.intent.action.DREAMING_STARTED", "android.intent.action.DREAMING_STOPPED",
        "android.intent.action.ACTION_POWER_DISCONNECTED", "android.intent.action.ACTION_POWER_CONNECTED",
        "android.net.conn.CONNECTIVITY_CHANGE"})
public class MyReceiver extends BroadcastReceiver {

    public MyReceiver() {
        super();
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        Session.getGlobalReceiverCallBack(context, intent);

        //Log.e("dfd", "" + intent.getAction());
    }
}

public class AppController extends Application {

    private BroadcastReceiver receiver;
    MyReceiver mR;

    @Override
    public void onCreate() {
        super.onCreate();
        mR = new MyReceiver();
        receiver = DynamicReceiver.with(mR)
                .register(this);

    }
}

public class MainActivity extends AppCompatActivity implements GlobalReceiverCallBack {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Session.setmGlobalReceiverCallback(this);

    }

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

        Toast.makeText(context, "" + intent.getAction(), Toast.LENGTH_LONG).show();
    }
}

有关完整参考，您还可以查看https://github.com/devggaurav/BroadcastReceiver-For-Naught-and-Oreo-devices