Android 8.0系统以后你该这样启动Service

java.lang.IllegalStateException: Not allowed to start service Intent app is in background uid UidRecord

就是这样的一个bug才使我发现原来我的Android8.0并没有适配好！

先来看google开发文档对Android 8.0以后启动服务的一段描述：

也可以直接去查看8.0的变动：后台执行限制

之前启动Service的方法：

startService(new Intent(this, LockService.class));

启动Service的正确方式

1、添加权限

2、启动Service的方式：

	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
		    startForegroundService(new Intent(this, LockService.class));
	 } else {
		    startService(new Intent(this, LockService.class));
	}

3、在Service中的配置：

public class LockService extends Service {
    public LockService() {
//        super("Name for Service");
    }
    @Override
    public void onCreate() {
        super.onCreate();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel("lock", "lock", NotificationManager.IMPORTANCE_LOW);
            NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            if (manager == null)
                return;
            manager.createNotificationChannel(channel);
			//此处的channelId必须和上面NotificationChannel设置的id一致
            Notification notification = new NotificationCompat.Builder(this, "lock")
                    .setAutoCancel(true)
                    .setCategory(Notification.CATEGORY_SERVICE)
                    .setOngoing(true)
                    .setPriority(NotificationManager.IMPORTANCE_LOW)
                    .build();
			//注意 id不能为0
            startForeground(107, notification);
        }
 	}
  }

还有一种错误：

Activity has leaked IntentReceiver that was originally registered here. Are you missing a call to unregisterReceiver()?

这种错误是因为你的注册广播没有成对出现，只有注册，没有注销代码，只需要添加如下代码即可：

 @Override
    public void onDestroy() {
        unregisterReceiver(receiver);
        super.onDestroy();
    }