Android 获取以前的活动 [英] Android get previous activity

问题描述

我有 2 个活动:Activity1 和 Activity2.在每个活动中，都有一个按钮可将我引向第三个活动 (MainActivity).在 MainActivity 中，我想知道从哪个活动页面被调用.

I have 2 activities: Activity1 and Activity2. In each of this activities there is a button that leads me to a third activity (MainActivity). In MainActivity I want to know from which activity page was called.

推荐答案

可以使用Intent的putExtra属性来传递Activity的名称.

You can use the putExtra attribute of the Intent to pass the name of the Activity.

调用活动，

Intent intent = new Intent(this, Next.class);
intent.putExtra("activity","first");
startActivity(intent);

下一个活动，

Intent intent = getIntent();
String activity = intent.getStringExtra("activity");

现在在字符串活动中，您将获得它来自哪个活动的名称.

Now in the string activity you will get the name from which Activity it has came.

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