如何在不调用其onCreate()的情况下返回第一个活动 [英] How to come back to First activity without its onCreate() called

问题描述

我有3个活动.活动A，活动B，活动C.这是流A-> B-> C.现在，我想从C进入活动A(即C-> A)，而不必获取其名为Activity A的onCreate().

I have 3 activity . Activity A ,Activity B, Activity C. This is the flow A->B->C. Now i want to come to activity A from C .(i.e C->A) without getting its onCreate() called of Activity A.

到目前为止，我的代码是:但是它将调用ActivityA的onCreate().我想打电话给Restart().

so far my code is:But it will call onCreate() of ActivityA. I want to call Restart().

Intent intent=new Intent(ActivityC.this,ActivityA.class);
                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(intent);
                finish(); 

推荐答案

两种情况:

1. 如果您想继续进行其他活动，并且只想将A放在前面，只需使用意图标记FLAG_ACTIVITY_REORDER_TO_FRONT.

1. If you want to keep other activities live and just want to bring A to front, just use intent flag FLAG_ACTIVITY_REORDER_TO_FRONT.

如果您不想清除所有活动，并且希望将现有的A实例放在顶部，请使用意图标志FLAG_ACTIVITY_CLEAR_TOP和FLAG_ACTIVITY_SINGLE_TOP.

If you don't want to clear all activities and want existing instance of A at top, then use intent flags FLAG_ACTIVITY_CLEAR_TOP and FLAG_ACTIVITY_SINGLE_TOP.

注意:如果仅使用FLAG_ACTIVITY_CLEAR_TOP，则将调用onCreate.

Note : If you use only FLAG_ACTIVITY_CLEAR_TOP, then onCreate will be called.

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