由网友(人心难测ヽゝ)分享简介：我有三个活动A，B和; C.Now的任务，我有这种形式的A，B和C，在默认的Andr​​oid标准模式下的活动导航发生这样的A-> B-> C-> B-> A.Now我想在这里是当我去到活动C来自B，当我回到pressed在活动我去previous活动即，B，但我想回来到A从C.How实现这个任何人都可以告诉这个？...

我有三个活动A，B和; C.Now的任务，我有这种形式的A，B和C，在默认的Andr​​oid标准模式下的活动导航发生这样的A-> B-> C-> B-> A.Now我想在这里是当我去到活动C来自B，当我回到pressed在活动我去previous活动即，B，但我想回来到A从C.How实现这个任何人都可以告诉这个？

I have three activities A,B & C.Now the Task i have this form A,B and C,in default android "standard"mode The activities navigation takes place like this A->B->C->B->A.Now What I want here is when I went to Activity C from B,when i backPressed In activity I went to previous Activity i.e.,B But i want to come back to A from C.How to achieve this could anyone tell about this??

，我想通过做标志的意图或者如果可能的话想申请launchmodes的活动，但我很困惑，它发射方式，我应该用它来实现这一目标？-could任何一个，请帮我在这

,I want to do through intent flags or if possible want to apply launchmodes for the activities,But i am confused which launch mode should i use to achieve this ?-could any one please help me in this

在此先感谢

推荐答案

刚刚推出一个新的意图并清除活动的堆栈中。

Just launch a new intent and clear the activities on the stack.

 Intent intent = new Intent(this, A.class);
 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 startActivity(intent);