Friends I am using listview and loading contents on scroll when it reaches at the end. But I am facing error like the same url is called more than once if if scrolled fastly can anybody help me to resolve this. I have gone thro SCROLL_STATE_IDLE but don't know how to implement the same in my code. Also even when am not touching screen its running. I now want to know how to stop the code on Idle state.Attaching my code below
int start = 0;
int limit = 3;
loadingMore = false;
listView.setOnScrollListener(new OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
// TODO Auto-generated method stub
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
// TODO Auto-generated method stub
int lastInScreen = firstVisibleItem + visibleItemCount;
if ((lastInScreen == totalItemCount) ) {
if(loadingMore == false){
start = lastInScreen - 1;
url = "http://www.dskjhf.com/web-servic/request_response.php?type=get_articles&start="
+ start + "&end=" + limit;
grabURL(url);
}
}}
});
protected void grabURL(String url) {
// TODO Auto-generated method stub
new BackgroundTask().execute(url);
loadingMore = true;
}
Checked this one it will help you..for me it's working well
listView.setOnScrollListener(new OnScrollListener() {
private int currentVisibleItemCount;
private int currentScrollState;
private int currentFirstVisibleItem;
private int totalItem;
private LinearLayout lBelow;
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
// TODO Auto-generated method stub
this.currentScrollState = scrollState;
this.isScrollCompleted();
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
// TODO Auto-generated method stub
this.currentFirstVisibleItem = firstVisibleItem;
this.currentVisibleItemCount = visibleItemCount;
this.totalItem = totalItemCount;
}
private void isScrollCompleted() {
if (totalItem - currentFirstVisibleItem == currentVisibleItemCount
&& this.currentScrollState == SCROLL_STATE_IDLE) {
/** To do code here*/
Page = Page + 1;
apiVariables = TCGAPIVariable.getSingletonObject();
searchUrl = apiVariables.searchList(cityId, catId, area,
keyword, cuisine, type, cost, "" + Page, "20",uId);
Log.d("SEARCH_URL", searchUrl.trim());
int totalRecord = Integer.parseInt(itemData.get(0)
.getTotalRecord());
if (totalRecord > totalItem) {
if (TCGStaticMethods
.isInternetAvailable(SearchActivity.this))
new SearchAsynTask(SearchActivity.this, searchUrl,
true).execute();
} else {
LinearLayout llBelow = (LinearLayout) findViewById(R.id.pbSearchLististingBelow);
llBelow.setVisibility(View.GONE);
}
}
}
});