如何找到从当前活动在android的打开最后一个活动？ [英] How to find last activity from which current activity is opened in android?

问题描述

我有一个活动这可以从更多4个或5个不同的活动开，所以我可以从中找到活动我目前的活动就叫做...

I have one activity which can be open from more 4 or 5 different activity so i can find from which activity my current activity is called...

如果任何想法，请帮助我..

If any idea please help me..

推荐答案

您可能需要额外添加到您用来启动该活动以指示意图是从还是什么的要求是未来的意图。

You might want to add extras to the intent you use to start the activity to indicate where the intent is coming from or what the request is.

例如：

Intent intent = new Intent(this, OtherActivity.class);
intent.putExtra("caller", "MainActivity");
startActivity(intent);

，然后你的 OtherActivity 可以检测出来电，在其的onCreate ：

and then your OtherActivity could detect the "caller" in its onCreate:

String caller     = getIntent().getStringExtra("caller");
Class callerClass = Class.forName(caller);

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