问题
I have a listview which loads more listitems when it reaches 20rh listitem using onscroll listener
I want to add a footer saying loading more while more listitems are getting loaded
When i reach the 20th listitem the app crashes saying idex out of bounds in logct
my activity
public class InterActivity extends Activity
{
SwipeMenuListView listview;
//ListView listview;
View mFooterView;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.inter_layout);
shrdPreference = new SharedPreference();
//Execute RemoteDataTask AsyncTask
new RemoteDataTask().execute();
}
private class RemoteDataTask extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
mProgressDialog = new ProgressDialog(InterActivity.this);
mProgressDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
// Set progressdialog title
//mProgressDialog.setTitle("BEGINNER CODES");
// Set progressdialog message
mProgressDialog.setMessage("Loading. Please wait loading ....");
mProgressDialog.setIndeterminate(true);
mProgressDialog.setCancelable(false);
mProgressDialog.setIndeterminateDrawable(getResources().getDrawable(R.anim.progress_handler));
// Show progressdialog
mProgressDialog.show();
}
@Override
protected Void doInBackground(Void... params) {
// my do in backgroung process
}
@Override
protected void onPostExecute(Void result) {
// Locate the listview in listview_main.xml
// listview = (ListView) findViewById(R.id.inter_layoutListView);
listview = (SwipeMenuListView) findViewById(R.id.inter_layoutListView);
// Pass the results into ListViewAdapter.java
adapter = new FinalAdapter(InterActivity.this,
codelist);
mFooterView = LayoutInflater.from(InterActivity.this).inflate(R.layout.footer_layout, null);
// Binds the Adapter to the ListView
listview.setAdapter(adapter);
// Close the progressdialog
mProgressDialog.dismiss();
// setup onscrll listener
listview.setOnScrollListener(new OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view,
int scrollState) { // TODO Auto-generated method stub
int threshold = 1;
int count = listview.getCount();
if (scrollState == SCROLL_STATE_IDLE) {
if (listview.getLastVisiblePosition() >= count
- threshold) {
// Execute LoadMoreDataTask AsyncTask
new Loadmore().execute();
}
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
// TODO Auto-generated method stub
}
});
}
}
private class Loadmore extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
listview.addFooterView(mFooterView);
}
@Override
protected Void doInBackground(Void... params) {
// my load mmore data process
}
@Override
protected void onPostExecute(Void result) {
int position = listview.getLastVisiblePosition();
adapter.notifyDataSetChanged();
listview.removeFooterView(mFooterView);
listview.setSelectionFromTop(position, 0);
}
}
}
logcat
02-29 15:53:11.546 23342 23342 E AndroidRuntime
FATAL EXCEPTION: main 02-29 15:53:11.546 23342 23342 E
AndroidRuntime
java.lang.IndexOutOfBoundsException: Invalid index 9, size is 0 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at java.util.ArrayList.get(ArrayList.java:304)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at com.enlightenme.pac.FinalAdapter.getItem(FinalAdapter.java:55)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at com.enlightenme.pac.FinalAdapter.getView(FinalAdapter.java:83)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at com.baoyz.swipemenulistview.SwipeMenuAdapter.getView(SwipeMenuAdapter.java:65)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.AbsListView.obtainView(AbsListView.java:2588)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.ListView.makeAndAddView(ListView.java:1840)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.ListView.fillDown(ListView.java:681)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.ListView.fillSpecific(ListView.java:1339)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.ListView.layoutChildren(ListView.java:1639)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.AbsListView.onLayout(AbsListView.java:2427)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.View.layout(View.java:14938)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.ViewGroup.layout(ViewGroup.java:4601)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.View.layout(View.java:14938)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.ViewGroup.layout(ViewGroup.java:4601)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.View.layout(View.java:14938)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.ViewGroup.layout(ViewGroup.java:4601)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1694)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1552)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.LinearLayout.onLayout(LinearLayout.java:1465) 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.View.layout(View.java:14938)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.ViewGroup.layout(ViewGroup.java:4601)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.widget.FrameLayout.onLayout(FrameLayout.java:448)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.View.layout(View.java:14938) 02-29 15:53:11.546 23342 23342 E AndroidRuntime at android.view.ViewGroup.layout(ViewGroup.java:4601) 02-29 15:53:11.546 23342 23342 E AndroidRuntime at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2212)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2026)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1236)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5160)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:791) 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.Choreographer.doCallbacks(Choreographer.java:591)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.Choreographer.doFrame(Choreographer.java:561) 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:777)02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.os.Handler.handleCallback(Handler.java:725) 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.os.Handler.dispatchMessage(Handler.java:92) 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at android.os.Looper.loop(Looper.java:176) 02-29 15:53:11.546 23342 23342 E AndroidRuntime at android.app.ActivityThread.main(ActivityThread.java:5365) 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at java.lang.reflect.Method.invokeNative(Native Method) 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at java.lang.reflect.Method.invoke(Method.java:511) 02-29 15:53:11.546 23342 23342 E AndroidRuntime at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102) 02-29 15:53:11.546 23342 23342 E AndroidRuntime
at
new logcat
java.lang.ClassCastException: com.baoyz.swipemenulistview.SwipeMenuListView$1 cannot be cast to android.widget.HeaderViewListAdapter
02-29 17:54:03.976 27184 27184 E AndroidRuntime at android.widget.ListView.removeFooterView(ListView.java:396)
02-29 17:54:03.976 27184 27184 E AndroidRuntime at com.enlightenme.pac.InterActivity$Loadmore.onPostExecute(InterActivity.java:383)
回答1:
Create footer_view.xml and than just try it onCreate
View footerView = ((LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.footer_layout, null, false);
list.addFooterView(footerView);
来源：https://stackoverflow.com/questions/35697446/app-crashes-giving-index-out-of-bounds-in-logcat-while-adding-footer-to-listview