@Override
public void onHeaderScroll(
AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount, int index) {
Log.i(TAG, "onHeaderScroll -> firstVisibleItem: " + firstVisibleItem);
if (mTabView == null || mIndex != index || mHeaderView == null) {
return;
}
if (restoreListView((ListView) view)) {
return;
}
if (firstVisibleItem != 0) {
startAnimation(-mMaxScrollHeight);
return;
}
final View topView = view.getChildAt(firstVisibleItem);
if (topView == null) {
startAnimation(0);
return;
}
int y = topView.getTop() > 0 ? 0 : topView.getTop();
Log.i(TAG, "onHeaderScroll -> topView y: " + y);
Log.i(TAG, "onHeaderScroll -> topView height: " + topView.getHeight());
Log.i(TAG, "onHeaderScroll -> mHeaderView height: " + mHeaderView.getHeight());
int moveToY = Math.max(y, -mMaxScrollHeight);
startAnimation(moveToY);
if (mHeaderView != null) {
Log.i(TAG, "onHeaderScroll -> header height: " + mHeaderView.getVisiableHeight());
}
}
/**
* headerView滑动动画，支持1.6+版本 HONEYCOMB以上版本使用动画滑动，HONEYCOMB一下版本更改padding实现
*
* @param value
*/
public void startAnimation(int value) {
if (mHeaderView == null) {
return;
}
mScrollY[mIndex] = value;
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
Interpolator interpolator =
AnimationUtils.loadInterpolator(
mContext, android.R.anim.accelerate_decelerate_interpolator);
ObjectAnimator animator = ObjectAnimator.ofFloat(mHeaderView, "y", value);
animator.setInterpolator(interpolator);
animator.setDuration(0);
animator.start();
} else {
mHeaderView.setPadding(0, value, 0, 0);
}
}
@Override
public void onHeaderPull(int height) {
if (mHeaderView != null) {
mHeaderView.setVisiableHeight(height);
}
}
@Override
public void setState(int state) {
if (mHeaderView != null) {
mHeaderView.setState(state);
}
}
