android.view.animation.Animation#getDuration()源码实例Demo

private static long getRemovingParentAnimationDuration(Fragment fragment, long defValue) {
  try {
    Field animInfoField = Fragment.class.getDeclaredField("mAnimationInfo");
    animInfoField.setAccessible(true);
    Object animationInfo = animInfoField.get(fragment);
    Field nextAnimField = animationInfo.getClass()
        .getDeclaredField("mNextAnim");
    nextAnimField.setAccessible(true);
    int nextAnimResource = nextAnimField.getInt(animationInfo);
    Animation nextAnim = AnimationUtils.loadAnimation(fragment.getActivity(), nextAnimResource);

    return (nextAnim == null) ? defValue : nextAnim.getDuration();
  } catch (NoSuchFieldException | IllegalAccessException | Resources.NotFoundException ex) {
    Logger.getInstance()
        .e("BASE FRAGMENT", "Unable to load next animation from parent.", ex);
    return defValue;
  }
}
 

public void setMenuOpenAnimation(Animation menuOpenAnimation) {
    if (menuOpenAnimation == null) {
        menuOpenAnimation = AnimationUtils.loadAnimation(mContext, R.anim.anim_null);
    }
    if (menuOpenAnimation.getDuration() == 0) {
        menuOpenAnimation.setDuration(mMenuAnimationDuration);
    }
    menuOpenAnimation.setAnimationListener(animationListener);
    this.menuOpenAnimation = menuOpenAnimation;


}
 

public void setMenuCloseAnimation(Animation menuCloseAnimation) {
    if (menuCloseAnimation == null) {
        menuCloseAnimation = AnimationUtils.loadAnimation(mContext, R.anim.anim_null);
    }
    if (menuCloseAnimation.getDuration() == 0) {
        menuCloseAnimation.setDuration(mOptionSD_AnimationDuration);
    }
    menuCloseAnimation.setAnimationListener(animationListener);
    this.menuCloseAnimation = menuCloseAnimation;
}
 

private void start(Animation object, final OnPointDragListener removeListener) {
    long duration = object.getDuration();
    object.cancel();
    view.startAnimation(object);
    view.postDelayed(new Runnable() {
        @Override
        public void run() {
            view.clearAnimation();
            end(removeListener);
        }
    }, duration);
}
 

private long getNavBarExitDuration() {
    Animation exit = AnimationUtils.loadAnimation(mContext, R.anim.dock_bottom_exit);
    return exit != null ? exit.getDuration() : 0;
}
 

public void setLoadingScreen(boolean loading, int... frames) {
    currentLoadingTime = 0;
    Animation loadingTextAnim;

    if (GameActivity.getInstance().findViewById(
            R.id.loading_text).getAnimation() != null) {
        loadingTextAnim = GameActivity.getInstance().findViewById(R.id.loading_text).
                getAnimation();
    } else if (GameActivity.getInstance().findViewById(
            R.id.loading_day_old).getAnimation() != null) {
        loadingTextAnim = GameActivity.getInstance().findViewById(R.id.loading_day_old).
                getAnimation();
    } else {
        loadingTextAnim = null;
    }

    int animDuration = 0;
    if (loadingTextAnim != null) {
        animDuration = (int) ((loadingTextAnim.getDuration() + loadingTextAnim.getStartOffset())
                * TARGET_FPS) / 1000;
        loadingTextAnim.start();
    }
    if (frames.length == 0) { loadingTime = 6 + animDuration; }
    else { loadingTime = frames[0] + animDuration; }

    if (loading) {
        this.loading = true;
        GameActivity.getInstance().runOnUiThread(new Runnable() {
            @Override
            public void run() {
                GameActivity.getInstance().enableLoadingScreen();
            }
        });
    }
    else {
        GameActivity.getInstance().runOnUiThread(new Runnable() {
            @Override
            public void run() {
                GameActivity.getInstance().disableLoadingScreen();
            }
        });
    }
}