I have implemented a listener class to detect end of scroll view referring the link https://gist.github.com/marteinn/9427072
public class ResponsiveScrollView extends ScrollView {
private OnBottomReachedListener listener;
public ResponsiveScrollView(Context context) {
super(context);
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
View view = getChildAt(getChildCount()-1);
int diff = view.getBottom()-(getHeight()+getScrollY());
if (diff == 0 && listener!= null) {
listener.onBottomReached(this);
}
super.onScrollChanged(l, t, oldl, oldt);
}
public OnBottomReachedListener getBottomChangedListener() {
return listener;
}
public void setBottomReachesListener(OnBottomReachedListener onBottomReachedListener) {
this.listener = onBottomReachedListener;
}
public interface OnBottomReachedListener {
public void onBottomReached(View view);
}
}
Listener is set to scrollView:
scrollView.setBottomReachesListener(new GenericScrollListerner(this));
My GenericScrollListerner class:
public class GenericScrollListerner implements ResponsiveScrollView.OnBottomReachedListener {
private Context mContext;
public GenericScrollListerner(Context context) {
this.mContext = context;
}
@Override
public void onBottomReached(View view) {
Log.d("ScrollView","Scroll end");
String tag = (String) view.getTag();
Toast.makeText(mContext, "Scroll end with tag" +tag, Toast.LENGTH_SHORT).show();
}
}
My issue is that onBottomReached is firing twice most of the times. How to handle this issue ???
At last, I found an answer without a tweak.
Extend Custom scroll view with 'NestedScrollView' instead of ScrollView
public class ResponsiveScrollView extends NestedScrollView {
private OnBottomReachedListener listener;
public ResponsiveScrollView(Context context) {
super(context);
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
View view = getChildAt(getChildCount()-1);
int diff = view.getBottom()-(getHeight()+getScrollY());
if (diff == 0 && listener!= null) {
listener.onBottomReached(this);
}
super.onScrollChanged(l, t, oldl, oldt);
}
public OnBottomReachedListener getBottomChangedListener() {
return listener;
}
public void setBottomReachesListener(OnBottomReachedListener onBottomReachedListener) {
this.listener = onBottomReachedListener;
}
public interface OnBottomReachedListener {
public void onBottomReached(View view);
}
}
The above code will work