如何清除栈目前的活动？ [英] How to clear current activities in the stack?

问题描述

支持应用程序启动活动A，那么A启动活动B和完成自身。该活动结束后B开始活动℃。

Support App starts activity A, then A starts activity B and finishes itself. After that activity B starts activity C.

现在堆栈含有B和C，其中C在顶部。

Now the stack contains B and C, with C at the top.

然后我点击活动℃的按钮，并希望它清除B和C，并启动活性的，也就是我想活性的是在堆栈中的唯一活动。我如何能做到吗？

Then I click a button in activity C, and want it to clear B and C and start activity A, i.e. I want activity A to be the only activity in the stack. How can I make it?

谢谢！

编辑：我做了一个测试，使用FLAG_ACTIVITY_CLEAR_TOP。但是，这并不在我的情况下工作，因为活性的没有运行被点击活动C钮时。

I made a test to use FLAG_ACTIVITY_CLEAR_TOP. But it didn't work in my case, because activity A is not running when button in activity C is clicked.

推荐答案

设置的 FLAG_ACTIVITY_CLEAR_TOP 把你的意图开始活性的。

Set the FLAG_ACTIVITY_CLEAR_TOP flag on your intent to start activity A.

编辑：有没有你不能离开一个持续的一个原因？然后，你可以做的建议。

Is there a reason you can't leave A going? Then you could do as suggested.

否则，另一个（更复杂）选项：

Otherwise, another (more complicated) option:

在B启动ÇforResult。当A是从C开始，你可以用一个结果结束ç指示向B也退出。

In B start C forResult. When A is started from C, you could finish C with a result indicating to B to also exit.

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