SwipeRefreshLayout与setOnScrollListener干扰 [英] SwipeRefreshLayout interfering with setOnScrollListener
问题描述
每次我滚动列表向上或向下我隐藏（或取消隐藏）与 OnScrollListener 的一些看法。这是贴在我的的ListView 。
Everytime I scroll the list up or down I hide (or unhide) some views with OnScrollListener. Here is the code attached to my ListView.
lv.setOnScrollListener(new OnScrollListener() {
private int mLastFirstVisibleItem;
private boolean mIsScrollingUp = true;
private LinearLayout ll = (LinearLayout) getActivity()
.findViewById(R.id.llSearchPlaces);
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
if (view.getId() == lv.getId()) {
final int currentFirstVisibleItem = lv
.getFirstVisiblePosition();
if (currentFirstVisibleItem > mLastFirstVisibleItem) {
if (mIsScrollingUp == true) {
mIsScrollingUp = false;
Log.i("a", "scrolling down...");
floatingActionButton.hide();
Animation animation = new TranslateAnimation(0, 0,
0, 200);
animation.setDuration(300);
animation
.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationEnd(
Animation animation) {
ll.setVisibility(View.INVISIBLE);
}
@Override
public void onAnimationRepeat(
Animation animation) {
}
@Override
public void onAnimationStart(
Animation animation) {
}
});
ll.startAnimation(animation);
}
} else if (currentFirstVisibleItem < mLastFirstVisibleItem) {
if (mIsScrollingUp == false) {
mIsScrollingUp = true;
floatingActionButton.show();
Log.i("a", "scrolling up...");
Animation animation = new TranslateAnimation(0, 0,
200, 0);
animation.setDuration(400);
animation
.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationEnd(
Animation animation) {
}
@Override
public void onAnimationRepeat(
Animation animation) {
}
@Override
public void onAnimationStart(
Animation animation) {
ll.setVisibility(View.VISIBLE);
}
});
ll.startAnimation(animation);
}
}
mLastFirstVisibleItem = currentFirstVisibleItem;
}
}
});
布局：
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ListView
android:id="@id/android:list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fadeScrollbars="true"
android:listSelector="#00000000"
android:scrollbars="none" />
</android.support.v4.widget.SwipeRefreshLayout>
自从我加入了 SwipeRefreshLayout ，我没有得到任何东西，当我登录上面的监听器里。我如何使用这两个项目一起？
Ever since I added the SwipeRefreshLayout, I do not get anything when I Log inside the listener above. How can I use both of these items together?
修改：这似乎是这个是我需要的，但我不能让它仍然可以工作。
EDIT: It seems like this is what I need but I can't make it work still
至于那篇文章我在 onScroll 补充这一点，似乎寿它不工作。一部分
As part of that article I added this in onScroll, tho it doesn't seem to work.
if (firstVisibleItem == 0) {
swipeLayout.setEnabled(true);
} else {
swipeLayout.setEnabled(false);
}
EDIT2 ：这是问题的核心：看来 onScroll 方法火灾时，该活动第一次启动和列表负载，然后从来没有再多。
EDIT2: THIS IS THE HEART OF THE ISSUE: It seems the onScroll method fires when the Activity first starts and the list loads and then never more again.
推荐答案
我有同样的问题与 RecyclerView 和的ListView 。向下滚动的项目的任何量，这是不可能的，返回到清单的顶部。
I had the same issue with RecyclerView and ListView. Scrolling downwards for whatever amount of items, it was impossible to return to the top of the list.
这将禁用 SwipeRefreshLayout ，直到第一个可见的项目或任何项目的位置是可见的。你也可以沿着这一个绑定不同的滚动听众。请确保您启用（如previously禁用） SwipeRefreshLayout 每当你重新填充listivew。
This will disable the SwipeRefreshLayout until the first visible item or any item position is visible. You can also bind different scroll listeners along this one. Make sure you enable (if previously disabled) SwipeRefreshLayout whenever you repopulate the listivew.
public class SwipeRefreshLayoutToggleScrollListenerListView implements AbsListView.OnScrollListener {
private List<AbsListView.OnScrollListener> mScrollListeners = new ArrayList<AbsListView.OnScrollListener>();
private int mExpectedVisiblePosition = 0;
public SwipeRefreshLayoutToggleScrollListenerListView(SwipeRefreshLayout mSwipeLayout) {
this.mSwipeLayout = mSwipeLayout;
}
private SwipeRefreshLayout mSwipeLayout;
public void addScrollListener(AbsListView.OnScrollListener listener){
mScrollListeners.add(listener);
}
public boolean removeScrollListener(AbsListView.OnScrollListener listener){
return mScrollListeners.remove(listener);
}
public void setExpectedFirstVisiblePosition(int position){
mExpectedVisiblePosition = position;
}
private void notifyOnScrolled(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount){
for(AbsListView.OnScrollListener listener : mScrollListeners){
listener.onScroll(view, firstVisibleItem, visibleItemCount, totalItemCount);
}
}
private void notifyScrollStateChanged(AbsListView view, int scrollState){
for(AbsListView.OnScrollListener listener : mScrollListeners){
listener.onScrollStateChanged(view, scrollState);
}
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
notifyScrollStateChanged(view, scrollState);
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
notifyOnScrolled(view, firstVisibleItem, visibleItemCount, totalItemCount);
if(firstVisibleItem != RecyclerView.NO_POSITION)
mSwipeLayout.setEnabled(firstVisibleItem == mExpectedVisiblePosition);
}
}
编辑：
lv.setOnScrollListener(new SwipeRefreshLayoutToggleScrollListenerListView(mSwiperLayout){
//override methods here, don't forget the super calls.
});
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