跳过Backpressed中的片段（添加/隐藏）

Question

我正在使用fragmentTransaction处理片段，它看起来如下所示：

        FragmentManager fm = oldFragment.getFragmentManager();
        FragmentTransaction fragmentTransaction = fm.beginTransaction();
        fragmentTransaction.add(oldFragment.getId(), newFragment, tag);
        fragmentTransaction.hide(oldFragment);
        fragmentTransaction.addToBackStack(tag);
        fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
        fragmentTransaction.commit();

有几个片段，我想在回去的时候跳过其中的一些。

getFragmentManager().popBackStack(
    tag, 
    FragmentManager.POP_BACK_STACK_INCLUSIVE);

Answer 1

我用这个功能删除碎片告诉我如果我帮助。

public static void removeFragment(FragmentActivity activity) {
    try {
        FragmentManager supportFragmentManager = activity.getSupportFragmentManager(); // getFragmentManager();
        FragmentTransaction fragmentTransaction = supportFragmentManager.beginTransaction();
        fragmentTransaction.setCustomAnimations(R.anim.slide_down, R.anim.slide_up);
        fragmentTransaction.remove(supportFragmentManager.getFragments().get(0));

        try {
            fragmentTransaction.commit();

        } catch (Exception e) {
        }
        supportFragmentManager.popBackStack();

    } catch (NullPointerException exception) {
        exception.printStackTrace();
    }
}