android.support.v7.app.WindowDecorActionBar的实例源码

项目：app-theme-engine-master    文件：Util.java   

@Nullable
public static Toolbar getSupportActionBarView(@Nullable ActionBar ab) {
    if (ab == null || !(ab instanceof WindowDecorActionBar)) return null;
    try {
        WindowDecorActionBar decorAb = (WindowDecorActionBar) ab;
        Field field = WindowDecorActionBar.class.getDeclaredField("mDecorToolbar");
        field.setAccessible(true);
        ToolbarWidgetWrapper wrapper = (ToolbarWidgetWrapper) field.get(decorAb);
        field = ToolbarWidgetWrapper.class.getDeclaredField("mToolbar");
        field.setAccessible(true);
        return (Toolbar) field.get(wrapper);
    } catch (Throwable t) {
        throw new RuntimeException("Failed to retrieve Toolbar from AppCompat support ActionBar: " + t.getMessage(),t);
    }
}

项目：Superuser-UI    文件：ToolbarContentTintHelper.java   

@Nullable
public static Toolbar getSupportActionBarView(@Nullable ActionBar ab) {
    if (ab == null || !(ab instanceof WindowDecorActionBar)) return null;
    try {
        WindowDecorActionBar decorAb = (WindowDecorActionBar) ab;
        Field field = WindowDecorActionBar.class.getDeclaredField("mDecorToolbar");
        field.setAccessible(true);
        ToolbarWidgetWrapper wrapper = (ToolbarWidgetWrapper) field.get(decorAb);
        field = ToolbarWidgetWrapper.class.getDeclaredField("mToolbar");
        field.setAccessible(true);
        return (Toolbar) field.get(wrapper);
    } catch (Throwable t) {
        throw new RuntimeException("Failed to retrieve Toolbar from AppCompat support ActionBar: " + t.getMessage(),t);
    }
}