onscrolllistener

问题 I debugged several times. It's driving me crazy. My listView.onScroll() function gets called several times and every time with arguments all 0! Which causes the listView to show THE SAME list over and over when scrolled. I even manually set the arguments but still no change. Why on earth would onScroll get called multiple times? It's not like it gets caught in a loop because some times the result appears on the screen! I call a RESTfull webService wich has pagination. Here is a piece of my

问题 I am planning to create a paginated scroll-to-bottom RecyclerView. But the onScrolled callback isn't being fired at all: mBooksRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); Log.i("Dale", "scrolled"); } }); mBooksRecyclerView.setNestedScrollingEnabled(false); if (Utils.hasContent(books)) { mBooksRecyclerView.setVisibility(View.VISIBLE);

问题 I am fetching some data from API and presenting each item as a RecyclerViewPager slide . So, I have made an async task inside onScrollListener to check scroll actions and when the user slides 5 items asynctask fetches the Items of page 2 and in the doInBackGround function the data will be added to the array and array will be added to the recycler view pager . Everything works fine but I need to stop scrolling at 5 slide for a few seconds(Minimum 5 sec) or else the recyclerView won't show the

问题 I have a recyclerview with horizontal layout and only one view is visible at a time: mRecyclerView = findViewById(R.id.rvmain); mRecyclerView.setOnFlingListener(null); final SnapHelper snapHelper = new LinearSnapHelper(); snapHelper.attachToRecyclerView(mRecyclerView); mLayoutManager = new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false); mRecyclerView.setLayoutManager(mLayoutManager); mAdapter = new MainActivityRVAdapter(postsModels,MainActivity.this); mRecyclerView.setAdapter

问题 Hey guys i aam creating a listView and a floating button in my application and i would like to have the effect of hiding and returning depending on the scroll state. When the ListView is being Scrolled the button hides fine, but when the scrolling stops the button does not return to its initial position. Any ideas? My Code: public class MainActivity extends ActionBarActivity { private ImageButton btn; private ListView lv; @Override protected void onCreate(Bundle savedInstanceState) { super

问题 setOnScrollListener is deprecated. Reading the docs from here it tells to Use addOnScrollListener(OnScrollListener) and removeOnScrollListener(OnScrollListener) . What is the proper way to add and remove OnScrollListener ? Do i need to use removeOnScrollListner in onPause and set it up again using addOnScrollListener in onResume ?? 回答1: addOnScrollListener(OnScrollListener) means you can add more than one listener to a RecyclerView. removeOnScrollListener(OnScrollListener) means you can

问题 I'm using RecyclerView, with ScrollListener: mRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() { @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) { super.onScrollStateChanged(recyclerView, newState); } @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); // Do my logic } }); When I scroll with the finger, the scroll listener triggered fine. But when I scroll progrematically,

问题 I have a grid view and want to update the items in grid view after the end of list is reached. To implement this i decided to use OnScrollListener. But the behavior of OnScrollListener is strange as it calls my method to update grid view many times.. @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { // TODO Auto-generated method stub if (firstVisibleItem + visibleItemCount >= totalItemCount) { // End has been reached // Call

问题 I need to catch scrolling events inside my custom ListView Adapter, so I have implemented OnScrollListener in it, but its methods are not being called. I was looking everywhere for an answer but without any luck, no errors no exceptions. What could be wrong? ListView Adapter: import java.util.ArrayList; import android.app.Activity; import android.content.Context; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.View; import

问题 I'm currently using the scrollListener to enable endless scroll - you can find my question and Vilen's answer here: Adding items to Endless Scroll RecyclerView with ProgressBar at bottom This works wonders when you have the same dataset size each time you activate your adapter when you scroll For example, in Vilen's code, he is increasing the size of the dataset by the same amount , 15, each time he scrolls. However, in the real world, this is often not the case. You have dissimilar dataset