从历史记录中删除一个活动是通过在你不想要的活动之前设置标志来完成的

A - C > B - > - > D

假设A,B,C和D是4个活动，如果你想清除B和C 设置标志

intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

在活动A和B中

这是代码位

Intent intent = new Intent(this,Activity_B.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(intent);

在这里我列出了一些完成这个任务的方法:

转到manifest.xml-并输入android:noHistory="true"，从堆栈中删除活动。 当从当前活动切换到其他活动时，在意图设置标记为(意图。Intent.FLAG_ACTIVITY_CLEAR_TASK)。下面的示例演示了这一点。 Intent = new Intent(CurrentActivity. CurrentActivity.)这一点,HomeActivity.class); intent.setFlags(意图。FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK) startActivity(意图);

注意:放置意图标志会导致一段时间的黑屏(当切换活动时)。

在Manifest文件中设置noHistory="true"即可。 它使活动从后台堆栈中删除。

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。

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();
    }
}

在清单中，您可以添加:

android:noHistory="true"

<activity
android:name=".ActivityName"
android:noHistory="true" />

你也可以打电话

finish()

在调用startActivity(..)