android - 奥利奥 : Broadcast receiver Not working

Question

每当用户调用新电话时，我都试图在我的应用程序上触发通知。我在我的 Activity 中注册接收器并在 onDestroy() 方法中销毁它。以下是注册的代码 fragment

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

我面临的问题是我没有在广播接收器的覆盖 onReceive() 方法中获得任何触发器。请让我知道是否有任何新的实现或我应该采用单独的方式来接收广播，尤其是奥利奥。

提前致谢。

Answer 1

I faced this issue for a long time. And every one will provide you a link to google developers site, which describes nothing than how they are having limits on background services; with no proper documentation and no sample code showing developers, how to implement it on Oreo or Higher. Even on stack-Overflow you will find only links to the google developers site on limitations.

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我希望您或其他开发人员会觉得这很有帮助。

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仍然有一些排除项，例如 NEW_OUTGOING_CALL 或 BOOT_COMPLETED，您仍然可以在 list 中使用它们。但在应用程序上下文中实现运行时是一种很好的做法。我希望我的 PHONE_STATE 随时准备好接听和拨出电话；每次重新启动时也是...

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<?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>

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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。

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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));
    }
}
}

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这里是WatchMan.java一个前台服务，实现了receivers runtime

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");
}
}

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现在在调用之前在接收器中将电话号码插入 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号码执行任何您想要的操作。希望对你或其他人有帮助