回击后如何捕捉返回活动的事件 [英] How to catch event of coming back to an activity after hitting back

问题描述

我为我的应用程序提供了一个主屏幕，该屏幕随后会导致不同的屏幕，从每个击退操作中，您都将回到主屏幕.每当用户返回"主屏幕时，我都想做一些事情，如何捕获此类事件?

I have a main screen for my application which then leads to different screens, from each of those hitting back takes you back to the main screen. I want to do some stuff every time a user is "coming back" to the main screen, How do I catch this kind of event???

推荐答案

在主要活动中使用onResume()方法，或者通过在子活动中覆盖keyDown方法在活动中使用startActivityForResult方法，这可能对您有帮助

Use onResume() method in your main activity or Use startActivityForResult method in your activity by overriding the keyDown method in sub activities,it may help you

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