当推送到达时显示警报 [英] Display Alert when push arrives

问题描述

当推送通知从C2DM或GCM到达时，如何显示警报。现在我在状态栏上显示通知。所以我怎样才能得到一个通知作为警报。

How Can I Display an alert when push notification arrives from C2DM or GCM. Right now I am displaying notifications on status bar. So How can I get a notification as an alert.

推荐答案

在用户正在做的事情中弹出对话框是疯狂的用户敌对的事情要做。如果他们在玩愤怒的小鸟而你刚刚毁了他们的枪声呢？只有平台可以并且应该避免这种情况。

Popping a dialog in the middle of something a user is doing is a wildly user hostile thing to do. What if they're playing Angry Birds and you've just ruined their shot? Only the platform can and should get away with that.

使用通知区域，就像谷歌预期的那样，除非您的应用程序目前有控制权（您的活动处于运行状态）。然后使用该活动的上下文来弹出 AlertDialog（）。您可以通过覆盖 onResume（）和 onPause（）来检测活动是否正在运行 - 您的活动的时间。

Use the notification area, like Google intended, UNLESS you app currently has control (your activity is in running state). Then just use that activity's context to pop an AlertDialog(). You can detect if the activity is running by overriding onResume() and onPause() - anything that happens in between is your activity's time.

AlertDialog可以像这样弹出：

An AlertDialog can be popped like this:

new AlertDialog.Builder(Ctxt) //Use an activity object here
    .setMessage(R.string.MyMessageID) //Provide a message here... A string or a string ID will do
    .setCancelable(true) //If you want them to be able to dismiss with a Back button
    .setNegativeButton(R.string.IDS_NO, null) //No action on NO, right?
    .setPositiveButton(R.string.IDS_YES, OnYesClickListener) //Plug your own listener...
    .create()
    .show();

对于简单的消息/是/否对话框， AlertDialog 就足够了。对于更复杂的UI，从 Dialog 派生一个类并设计你自己的布局。

For a simple message/Yes/No dialog, an AlertDialog would suffice. For more complicated UI, derive a class from Dialog and design your own layout.

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