Android编程实现ActionBar的home图标动画切换效果

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:id="@+id/main_drawer"
  android:layout_width="match_parent"
  android:layout_height="match_parent">
  <!-- 内容布局-->
  <FrameLayout
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />
  <!-- 侧滑菜单-->
  <android.support.design.widget.NavigationView
    android:id="@+id/main_navigation"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    app:headerLayout="@layout/navigation_header"
    app:menu="@menu/menu_drawer" />
</android.support.v4.widget.DrawerLayout>

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
    <item name="drawerArrowStyle">@style/DrawerArrowStyle</item>
</style>
<style name="DrawerArrowStyle" parent="Widget.AppCompat.DrawerArrowToggle">
    <item name="spinBars">true</item>
    <item name="color">@android:color/white</item>
</style>

ActionBar mActionBar = getSupportActionBar();
if (mActionBar != null) {
  mActionBar.setDisplayHomeAsUpEnabled(true);
  mActionBar.setHomeButtonEnabled(true);
}
//实现左侧home图标“菜单”样式与“返回”样式的动画切换(需要在xml中配置相关样式)
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.drawer_open, R.string.drawer_close);
drawerLayout.setDrawerListener(drawerToggle);

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    drawerToggle.syncState();
}