android - Activity.setResult(int) 和 Activity 生命周期

Question

在按下后退按钮（重新创建活动）之前调用并旋转设备后是否Activity保留结果？Activity.setResult(int)

似乎Activity没有恢复这种信息。如果是这种情况，我应该使用 a 恢复结果并再次Bundle调用吗？setResult

Answer 1

In a word, yes. The result isn't returned until you call finish(). setResult() presumes that the Activity setting the result (call it Activity B) was started by a call to startActivityForResult() from another Activity (call it Activity A). The presumption is that Activity B will finish, resulting in an automatic return to Activity B.