奥利奥:广播接收器不工作 [英] Oreo: Broadcast receiver Not working
问题描述
每当用户拨打新电话时，我都试图在我的应用程序上获取通知触发器.我正在我的活动中注册接收器并在 onDestroy() 方法中销毁它.以下是注册的代码片段
I was trying to get notification trigger on my application whenever the user makes a new call. I'm registering receiver in my activity and destroying it in onDestroy() method. Following is the code snippets for registering
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取的单独方式来接收广播，尤其是奥利奥.
The issue I'm facing is I'm not getting any trigger in override onReceive() method for the Broadcast receiver. Kindly let me know whether any new implementations or the separate way I should do for receiving the broadcast especially for Oreo.
提前致谢.
推荐答案
我遇到这个问题很长时间了.每个人都会为您提供一个指向 google 开发者站点的链接，该链接仅描述了他们如何限制后台服务；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，您也只能找到有关限制的 google 开发者网站的链接.
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.
<小时>
我希望您或其他一些开发者会觉得这很有帮助.
I hope you or some other developer will find this very helpful.
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.但是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 随时准备接听来电；在每次重新启动时...
There are still some exclusions like NEW_OUTGOING_CALL OR BOOT_COMPLETED which you can still use in manifest. But its a good practise to implement runtime at application context. I wanted my PHONE_STATE ready always for getting incoming and outgoing calls; On every reboot too...
<?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>
<小时>
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.
In above manifest.xml i have not placed WRITE_EXTERNAL_STORAGE and READ_EXTERNAL_STORAGE. It has automatically inserted by android studio as i implemented it runtime.
这是我的 OnBoot 接收器:
Here is my OnBoot Receiver :
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 : ", "
OnBootReceiver - 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));
}
}
}
<小时>
这里是 WatchMan.java 一个实现接收器运行时的前台服务
Here is WatchMan.java a foreground service that implements 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 : ", "
OnCreate...");
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 : ", "
mCallBroadcastReceiver 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 : ", "
mCallBroadcastReceiver Listening....");
//return super.onStartCommand(intent, flags, startId);
return START_NOT_STICKY;
}
@Override
public void onDestroy()
{
this.unregisterReceiver(mCallBroadcastReceiver);
Log.d("WatchMan : ", "
Destroyed....");
Log.d("WatchMan : ", "
Will be created again....");
}
@Override
public IBinder onBind(Intent intent)
{
// TODO: Return the communication channel to the service.
throw new UnsupportedOperationException("Not yet implemented");
}
}
<小时>
现在在接收方调用之前插入电话号码到sqlite数据库表中；以便您可以从 CatchNumbers.java 服务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
Now in the receiver before calling insert phone numbers into sqlite database table; so that you can read it from CatchNumbers.java service and perform whatever actions you wants on incoming and outgoing numbers. Hope it helps you or someone else
这篇关于奥利奥:广播接收器不工作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！
