我使用的是新的 DrawerLayout 有边导航。我使用的是抽屉图标（'汉堡包'）是这样的：

I'm using the new DrawerLayout to have side navigation. I'm using the drawer icon (the 'hamburger') like this:

@Override
protected void onStart() {
    super.onStart();

    mDrawerLayout = (DrawerLayout) findViewById(R.id.activity_main_drawerlayout);
    mDrawerToggle = new ActionBarDrawerToggle(
            this, 
            mDrawerLayout, 
            R.drawable.ic_navigation_drawer, 
            R.string.app_name, 
            R.string.app_name);
    mDrawerLayout.setDrawerListener(mDrawerToggle);

    getActionBar().setDisplayHomeAsUpEnabled(true);
    getActionBar().setHomeButtonEnabled(true);
}

然而，当我添加了一个片段的backstack，我要再次显示后退箭头，这样用户可以导航回家，才把打开应用程序的抽屉。

However, when I add a Fragment to the backstack, I want to display the back arrow again, so the user can navigate back to "home", and only then open the app drawer.

我如何重置抽屉图标后面的图标？ 箭头我想要的：

How can I reset the drawer icon to the back icon? The arrow I want:

推荐答案

要关闭并隐藏DrawerToggle汉堡包，只需拨打

To disable and hide the DrawerToggle "Hamburger", just call

mDrawerToggle.setDrawerIndicatorEnabled(false);