addToBackStack 没有导航回正确的片段

Question

你好，我试图在 EditProfile Fragment 中包含一个 backstack，当按下 back 时它会返回到 Profile Fragment 但它会返回到 Home Fragment

如果您想要更多参考代码，请告诉我，我会更新 完整代码的问题

个人资料片段

editProfileButton = relativeLayout.findViewById(R.id.edit_profile_button); // buuton to start editprofile fragment 
        editProfileButton.setOnClickListener(v -> {
            Fragment edit_profile = new Edit_Profile();
            FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
            transaction.replace(R.id.fragment_container, edit_profile);
            transaction.addToBackStack(String.valueOf(new Profile_Fragment())); // i thinked this method of implementing string.valueof will navigate back to the given fragment but as you know it is not working
            transaction.commit();
        });

Answer 1

我在this 博文中找到了一个很好的解释。您可以尝试此代码并阅读更多相关信息。

public void addSubscreen(Fragment fragment) {
    getSupportManager()
        .beginTransaction()
        .replace(R.id.container, fragment)
        .addToBackStack(null)
        .commit();
    subscreensOnTheStack++;
}


public void popOffSubscreens() {
    while (subscreensOnTheStack > 0) {
        fragments.popBackStackImmediate();
    }
}