CODEWITHSUNDEEP
androidlistviewoverscroll
gothion
gothion

Reputation: 125

android ListView onOverScroll never be called

can anyone tell me why I can not get onOverScrolled be called in my following code: 

   public class KasOverScrollListenableListView extends ListView {

    public interface OverScrollListener{
        void onOverScroll(int scrollx, int scrollY,boolean clampedX, boolean clampedY );
    }
    private OverScrollListener mOverScrollListener= null;
    public KasOverScrollListenableListView(Context context, AttributeSet attrs,
            int defStyle) {
        super(context, attrs, defStyle);
    }

    public KasOverScrollListenableListView(Context context, AttributeSet attrs){
        this(context,attrs,0);
    }

    public KasOverScrollListenableListView(Context context){
        this(context,null,0);
    }

    protected void onOverScroll(int scrollX, int scrollY, boolean clampedX, boolean clampedY){
         Log.i("overScrolling", "overScrolling is " + scrollY);
        // if the version of the system higher than 2.3 then do the following things.
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD){
//          super.onOverScrolled(scrollX, scrollY, clampedX, clampedY);
            if(null != mOverScrollListener ){
                mOverScrollListener.onOverScroll(scrollX, scrollY, clampedX, clampedY);
            }
        }

    }

    public void setOnOverScrollListener(OverScrollListener listener){
        mOverScrollListener = listener;
    }
}

I can never get the log to be output which means this function never been called, while this listview is actually overscrolled.I will really be grateful to hear your idea.

Upvotes: 2

Views: 3445

Answers (3)

Kacy
Kacy

Reputation: 3430

The method is onOverScrolled, not onOverScroll.

You can detect these bugs by putting @Override above the method signature. The compiler will let you know if you really are overriding a method or not.

Upvotes: 0

Suvitruf - Andrei Apanasik
Suvitruf - Andrei Apanasik

Reputation: 5672

Just...if it will needed someone. I shared working sample on Github.

Works fine on 2.3+

Upvotes: 0

Aviral
Aviral

Reputation: 1141

Not sure if this will help, but the example in the below link calls super.overScrollBy(...). I am able to get to onOverScroll using this code. Hope it helps...

OverScroll ListView Sample code

Upvotes: 1

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