应用关闭时推送通知 [英] Pushing notifications when app is closed

问题描述

我希望在 Xamarin Forms 中使用 C# 创建一个基于文本的 Android 游戏.

I am looking to create a Text-Based Android game using C# in Xamarin Forms.

在故事中，我想设置角色任务，这需要一些时间，例如我去挖这个洞，挖完我给你打个电话."

In the story, I want to set the character tasks, which will take them some time e.g. "I'll go dig this hole, I'll give you a buzz when I'm done."

如何设置通知以在设定时间后显示?例如上面的语句可能需要 10 分钟，然后用户收到通知继续游戏?

How do I set up notifications to appear after set times? For example the above statement may take 10 minutes, then the user receives a notification to continue the game?

我一周前才开始使用 C#，所以如果这是菜鸟，或者已经被问到，我深表歉意.我到处找，但有几种类型的通知，当我试图理解它时，我似乎正在阅读法语.

I've only started C# a week ago, so I apologize if this is noobish, or already been asked. I have looked everywhere but there are several types of notification, and it seems like I'm reading french when I try to make sense of it.

推荐答案

1. 将此行添加到您的 AndroidManifest.xml

1. Add this line to your AndroidManifest.xml

<uses-permission android:name="android.permission.WAKE_LOCK" />

在你的安卓项目中实现 BroadcastReceiver

Implement BroadcastReceiver in your android project

[BroadcastReceiver]
public class NotificationBroadcastReceiver : BroadcastReceiver
{
  private ApprovalDataStore _approvalDataStore => DependencyService.Get<ApprovalDataStore>();

  public override async void OnReceive(Context context, Intent intent)
  {
     var pm = PowerManager.FromContext(context);
     var wakeLock = pm.NewWakeLock(WakeLockFlags.Partial, "GCM Broadcast Reciever Tag");
     wakeLock.Acquire();

     //Write your code here

     // When you are finished
     wakeLock.Release();
  }
}

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