问题描述
我想从任何活动返回MainActivity.例如，我的活动堆栈: A-B-C-D.A(MainActivity)在堆栈的底部，D在堆栈的顶部.
I want to go back to MainActivity from any activities.For ex, my stack of activities:A - B - C - D. A (MainActivity) is in the bottom and D is in the top of stack .
当我使用 android:launchMode ="singleTask" 时.我可以按预期在任何活动中返回A.
When I use android:launchMode="singleTask" . I can go back to A at any actvities as I expected.
但是当我使用标志 FLAG_ACTIVITY_NEW_TASK (没有launchMode ="singleTask")时，它无法按预期运行，它将打开一个新的Activity.堆栈是: A-B-C-D-A 不像文件中写的那样:
But when I use flag FLAG_ACTIVITY_NEW_TASK (without launchMode="singleTask"), it does not work as expected, it open a new Activity. And stacks are: A - B - C - D - Anot as document wrote:
这会产生与"singleTask" launchMode值相同的行为，在上一节.
This produces the same behavior as the "singleTask" launchMode value, discussed in the previous section.
有人知道原因吗?谢谢.
Anyone knows the reason? Thanks.
推荐答案
我希望此解决方案可以解决您的问题::-仅将其设置为 Intent
I hope this solution solve your problem::- Only set this to Intent
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_SINGLE_TOP);
这篇关于通过Flag进行的任何活动都可以返回MainActivity的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！