I am facing two problems:
- The scroll listener won't work
- The
RecyclerView
never recycles any views when it's attached to aNestedScrollView
. It acts like a linear layout inside the ScrollView. It uses a lot of memory and creates lags.
I am attaching a youtube player fragment on top of the recycler view since I can't put a fragment inside the recycler view. In my code you can see there is a frame layout.
My layout looks like this:
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/nestedScroll"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ffffff"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="240dp"
android:layout_alignParentTop="true"/>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/youtube_layout"
android:visibility="visible"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
I want to use scroll listener to load more items so I have tried the following:
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
Log.i(TAG, "onScrolled: ");
// bail out if scrolling upward or already loading data
if (dy < 0 || dataLoading.isDataLoading()) return;
final int visibleItemCount = recyclerView.getChildCount();
final int totalItemCount = layoutManager.getItemCount();
final int firstVisibleItem = layoutManager.findFirstVisibleItemPosition();
if ((totalItemCount - visibleItemCount) <= (firstVisibleItem )) {
onLoadMore();
}
}
But layoutManager.findFirstVisibleItemPosition()==0
so it's not working, and more over onScrolled never called twice
since I set
recyclerview.setNestedScrollingEnabled(false)
so I have tried in onBindView
like this
public void onBindViewHolder(RecyclerView.ViewHolder customViewHolder, int i) {
Log.w("d","inside bind view");
if(i>=getItemCount()-1 && !datamanager.isDataLoading()){
datamanager.loadmoreData();
}
but the recylerview binds the all the view at once time before I even start scrolling, so this method also does not work.