Changing the ActionBar hide animation?

Question

By default in Android 3.0+, when ActionBar.hide()/show() are called the bar is animated with a brief fade in/out animation.

There does not seem to be an XML style attri

Answer 1

if you use support-v7-compat, you can disable hide animation like this:

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    //消除动画效果
    disableABCShowHideAnimation(getSupportActionBar());
    return super.onCreateOptionsMenu(menu);
}



public static void disableABCShowHideAnimation(ActionBar actionBar) {
    try
    {
        actionBar.getClass().getDeclaredMethod("setShowHideAnimationEnabled", boolean.class).invoke(actionBar, false);
    }
    catch (Exception exception)
    {
        try {
            Field mActionBarField = actionBar.getClass().getSuperclass().getDeclaredField("mActionBar");
            mActionBarField.setAccessible(true);
            Object icsActionBar = mActionBarField.get(actionBar);
            Field mShowHideAnimationEnabledField = icsActionBar.getClass().getDeclaredField("mShowHideAnimationEnabled");
            mShowHideAnimationEnabledField.setAccessible(true);
            mShowHideAnimationEnabledField.set(icsActionBar,false);
            Field mCurrentShowAnimField = icsActionBar.getClass().getDeclaredField("mCurrentShowAnim");
            mCurrentShowAnimField.setAccessible(true);
            mCurrentShowAnimField.set(icsActionBar,null);
            //icsActionBar.getClass().getDeclaredMethod("setShowHideAnimationEnabled", boolean.class).invoke(icsActionBar, false);
        }catch (Exception e){
            //....
        }
    }
}