如何在Android中重新启动Activity [英] How to restart Activity in Android

问题描述

如何重新启动Android Activity?我尝试了以下操作，但是Activity只是退出了.

How do I restart an Android Activity? I tried the following, but the Activity simply quits.

public static void restartActivity(Activity act){

        Intent intent=new Intent();
        intent.setClass(act, act.getClass());
        act.startActivity(intent);
        act.finish();

}

推荐答案

我做了这样的主题切换器:

I did my theme switcher like this:

Intent intent = getIntent();
finish();
startActivity(intent);

基本上，我首先调用finish()，并且使用的是与开始此活动完全相同的意图.似乎可以解决问题?

Basically, I'm calling finish() first, and I'm using the exact same intent this activity was started with. That seems to do the trick?

更新:如下面的拉尔夫(Ralf)所述， Activity.recreate() 是进入API 11及更高版本的方法.如果您使用的是API11 +环境，则更可取.如果您使用的是API 10或更低版本，您仍然可以检查当前版本并调用上面的代码段. (请不要忘记赞扬拉尔夫的答案！)

UPDATE: As pointed out by Ralf below, Activity.recreate() is the way to go in API 11 and beyond. This is preferable if you're in an API11+ environment. You can still check the current version and call the code snippet above if you're in API 10 or below. (Please don't forget to upvote Ralf's answer!)

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