您需要添加 ="noreferrer"> ActivityFlags.NewTask 标记为意图，因为您要在活动上下文之外启动活动.

You need to add the ActivityFlags.NewTask flag to the intent because you are launching an activity outside of an activity context.

崩溃是因为引导接收器生成了 Android.Util.AndroidRuntimeException .

The crash is because a Android.Util.AndroidRuntimeException is generated by the boot receiver.

解决方案:

[BroadcastReceiver]
[IntentFilter(new[] { Intent.ActionBootCompleted }, Priority = (int)IntentFilterPriority.LowPriority)]
public class BootReceiver : BroadcastReceiver
{ 
    public override void OnReceive(Context context, Intent intent)
    {
        Intent serviceStart = new Intent(context, typeof(MainActivity));
        serviceStart.AddFlags (ActivityFlags.NewTask);
        context.StartActivity(serviceStart);                
    }
}