android – 跳过碎片onBackPressed(添加/隐藏)

我正在使用fragmentTransaction来处理片段,它看起来像这样：

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时跳过其中的一些片段.

例：

Frag1 -> (Press Next) -> Frag2 -> (Press Next) -> Frag3 -> (Press Back) -> Frag1

当我使用替换而不是添加和隐藏时,此解决方案有效

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

参考文献`Skip some fragments onBackPressed

但在我的情况下,跳过的片段会显示片刻.我怎样才能使它们之间的片段永远不存在？

解决方法

我使用此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();
    }
}