android 8.1 Not allowed to start service Intent 无法后台开启服务的异常（8.0以上系统）

1.添加权限
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

2.添加版本判断

private Socket_BackService socketservice;

 socketservice = new Intent(this, Socket_BackService.class);
//适配8.0 无法背地开启服务的异常
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
startForegroundService(socketservice);
}else {
startService(socketservice);
}

3.//在Socket_BackService  中添加以下代码

public static final String CHANNEL_ID_STRING = "service_chatroom";
onCreate（）添加以下代码
//适配8.0service
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NotificationChannel mChannel = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
mChannel = new NotificationChannel(CHANNEL_ID_STRING, getString(R.string.app_name),
NotificationManager.IMPORTANCE_LOW);
notificationManager.createNotificationChannel(mChannel);
Notification notification = new Notification.Builder(getApplicationContext(), CHANNEL_ID_STRING).build();
startForeground(1, notification);
}

运行试试效果吧！

最后

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