这可能不是理想的方法。如果有人有更好的办法，我会很期待去实施。以下是我如何使用11版本前的sdk完成这一特定任务。

在每节课上，你都想在时间清楚的时候离开，你需要这样做:

    ... interesting code stuff ...
    Intent i = new Intent(MyActivityThatNeedsToGo.this, NextActivity.class);
    startActivityForResult(i, 0);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == R.string.unwind_stack_result_id) {
        this.setResult(R.string.unwind_stack_result_id);
        this.finish();
    }
}

然后，当你想要初始化它时，需要从堆栈中设置弹出链的函数需要调用this:

NextActivity.this.setResult(R.string.unwind_stack_result_id);
NextActivity.this.finish();

那么活动就不在堆栈上了! 请记住，你可以启动一个活动，然后开始清理它的背后，执行并不遵循一个单一的(ui)线程。

您可以使用转发从活动堆栈中删除前一个活动，同时启动下一个活动。APIDemos中有一个这样的例子，但基本上你所做的只是在调用startActivity()之后立即调用finish()。

太迟了，但希望能有所帮助。大多数答案都没有指向正确的方向。这种事情有两个简单的标志。

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);

来自Android文档:

公共静态最终int FLAG_ACTIVITY_CLEAR_TASK 在API级别11中添加 如果在传递给Context.startActivity()的Intent中设置了该标志，该标志将导致任何与Context.startActivity()关联的现有任务 在启动活动之前要清除的活动。也就是 Activity将成为空任务的新根，以及任何旧任务的根 活动结束。这只能与 FLAG_ACTIVITY_NEW_TASK。

是的，看看Intent.FLAG_ACTIVITY_NO_HISTORY。

I know I'm late on this (it's been two years since the question was asked) but I accomplished this by intercepting the back button press. Rather than checking for specific activities, I just look at the count and if it's less than 3 it simply sends the app to the back (pausing the app and returning the user to whatever was running before launch). I check for less than three because I only have one intro screen. Also, I check the count because my app allows the user to navigate back to the home screen through the menu, so this allows them to back up through other screens like normal if there are activities other than the intro screen on the stack.

//We want the home screen to behave like the bottom of the activity stack so we do not return to the initial screen
//unless the application has been killed. Users can toggle the session mode with a menu item at all other times.
@Override
public void onBackPressed() {
    //Check the activity stack and see if it's more than two deep (initial screen and home screen)
    //If it's more than two deep, then let the app proccess the press
    ActivityManager am = (ActivityManager)this.getSystemService(Activity.ACTIVITY_SERVICE);
    List<RunningTaskInfo> tasks = am.getRunningTasks(3); //3 because we have to give it something. This is an arbitrary number
    int activityCount = tasks.get(0).numActivities;

    if (activityCount < 3)
    {
        moveTaskToBack(true);
    }
    else
    {
        super.onBackPressed();
    }
}

试试这个:

intent.addFlags (Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY)

它是API级别1，检查链接。