Android service启动报错IllegalStateException: Not allowed to start service Intent ...

Android 8.0 不再允许后台service直接通过startService方式去启动，否则就会引起IllegalStateException。一般的解决方式：

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

然后必须在TestService中调用startForeground():

@Override
public void onCreate() {
    super.onCreate();
    startForeground(1,new Notification());
}

使用上面代码之后报出RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid ch…

public static final String CHANNEL_ID_STRING = "service_01";

    @Override
    public void onCreate() {
        super.onCreate();
        //适配8.0service
        NotificationManager notificationManager = (NotificationManager) MyApp.getInstance().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);
        }
}