android - 找出后退按钮按下的位置

Question

当用户在我的活动中按下后退硬件按钮时，他将被带到上一个活动或主屏幕（取决于他首先如何进入该活动）。有没有办法确定用户在onBackPressed方法内部的确切位置？

score 2 · Accepted Answer

In your home and previous activity when you start the intent to go to this activity, you can add an extra to the Intent.

Intent.setExtra("PREVIOUS_ACTIVITY ", "HOME")

Then you can check in your activity onBackPressed() if it came from the home or another activity.

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