BroadcastReceiver onReceive 打开对话框

问题描述

我正在使用 BroadcastReceiver 构建一个 android 应用程序，并且我想在 onReceive 启动时显示一个对话框.我想在手机上显示对话框(无论用户身在何处，都向用户显示对话框，例如收到消息时的 whatsapp 对话框).

I'm building an android application with BroadcastReceiver and I want to show a dialog when onReceive starts. I want to show the dialog on the phone (show the user a dialog no matter where he is, like the whatsapp dialog when you get a message).

我该怎么做?

谢谢！

推荐答案

如果你想在广播接收器的 onReceive 内部显示一个对话框，你可以在广播接收器内部启动一个透明的活动一个警告对话框，从不调用 setContentView().该活动将具有透明视图，并且只会显示警报对话框.来源: 显示系统重启后广播接收器中的警报对话框

If you want to show a dialog from inside your onReceive of the BroadcastReceiver, inside your broadcast receiver you may start a transparent activity with an alert dialog and NEVER called setContentView(). The activity will have an transparent view and only the alert dialog will show. Source: show an alert dialog in broadcast receiver after a system reboot

有很多类似的帖子都在谈论这个话题.有关代码示例和其他评论，请参阅以下问题:

There are many similar posts which talk about this topic. See below questions for code samples and other reviews on the same:

1. BroadcastReceiver 中的 AlertDialog??能做到吗?

如何从 BroadcastReceiver 发出警报对话框上课?

如何显示来自 Android 广播接收器的对话框?

如何从 BroadcastReceiver 设置 Alertbox

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