片段替换仍然可见在背景上

Question

我正在尝试使用新的导航抽屉图案替换另一个片段.它似乎工作,但当我从抽屉中选择另一个选项时,新片段被加载但两个片段都可见.我没有使用静态片段布局,所以我不知道问题出在哪里.

片段通过在我的活动上onItemClick实现的方法加载AdapterView.OnItemClickListener.

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    Fragment fragmentToShow = null;
    // Load desired fragment
    switch (position) {
        case 0: // Authors
            if (fragmentAuthors == null) fragmentAuthors = new FragmentAuthors();
            fragmentToShow = fragmentAuthors;
            break;
        case 1: // Books
            if (fragmentBooks == null) fragmentBooks = new FragmentBooks();
            fragmentToShow = fragmentBooks;
            break;
    }
    FragmentTransaction ft = fragmentManager.beginTransaction();
    ft.replace(R.id.ActivityMain_Drawer_FrameMain, fragmentToShow);
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
    ft.commit();
    mDrawerLayout.closeDrawers();
}

布局

<!-- The main content view -->
<FrameLayout
    android:id="@+id/ActivityMain_Drawer_FrameMain"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/background_light" />

<!-- The navigation drawer -->
<FrameLayout
    android:id="@+id/ActivityMain_Drawer_FrameMenu"
    android:layout_width="240dp"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:background="@android:color/background_light">
    <ListView
        android:id="@+id/ActivityMain_Drawer_FrameMenu_List"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="0dp" />
</FrameLayout>

截图

https://dl.dropboxusercontent.com/u/1763308/Screenshots/device-2013-05-27-113128.png https://dl.dropboxusercontent.com/u/1763308/Screenshots/device-2013-05-27 -113139.png

Answer 1

我对一些片段也有同样的问题.为了解决这个问题,我简单地为所有片段布局设置背景颜色,例如:

android:background="?android:attr/colorBackground"