8

我有一个带有片段容器的 Activity 和两个片段，如“列表片段 - > 详细片段”

private boolean isFirstFragmentAdded() {
    return getSupportFragmentManager().findFragmentByTag("FIRST_FRAGMENT_TAG") != null;
}

private boolean isFirstFragmentVisible() {
    return getSupportFragmentManager().findFragmentByTag("FIRST_FRAGMENT_TAG").isVisible();
}

private boolean isSecondFragmentAdded() {
    return getSupportFragmentManager().findFragmentByTag("SECOND_FRAGMENT_TAG") != null;
}

private boolean isSecondFragmentVisible() {
    return getSupportFragmentManager().findFragmentByTag("SECOND_FRAGMENT_TAG").isVisible();
}

private void addFirstFragment() {
    firstFragment = new FirstFragment();
    getSupportFragmentManager().beginTransaction().add(R.id.fragment_container, firstFragment, "FIRST_FRAGMENT_TAG").commit();
}

private void showFirstFragment() {
    firstFragment = new FirstFragment();
    getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, firstFragment, "FIRST_FRAGMENT_TAG").commit();
}

private void addSecondFragment() {
    secondFragment = new SecondFragment();
    getSupportFragmentManager().beginTransaction().add(R.id.fragment_container, secondFragment, "SECOND_FRAGMENT_TAG").commit();
}

private void showSecondFragment() {
    secondFragment = new SecondFragment();      getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, secondFragment, "SECOND_FRAGMENT_TAG").commit();
}

private void refreshVisibleFragment() {
    if (isFirstFragmentAdded() && isFirstFragmentVisible()) {
        refreshFirstFragment();
    } else if (isSecondFragmentAdded() && isSecondFragmentVisible()) {
        refreshSecondFragment();
    }
}

问题是，即使我的第二个片段可见，第一个片段总是返回isVisible() == true，所以第二个片段永远不会刷新。已经尝试删除、分离，但没有任何效果：第一个片段始终显示为已添加且可见。还在平板电脑和手机上测试它，同样的事情也会发生。也许我遗漏了一些东西，但无法正确处理，因此我们将不胜感激。谢谢

4

1 回答 1

0

fragment.isMenuVisible()设置后尝试 fragment.setMenuUserVisibility(false)

于 2016-05-04T11:14:45.540 回答