zoom the imageview on the double click in viewflipper in android

Question

How to zoom the imageview on the double click in viewflipper ? I want to zoom the imageview on double tap of viewflipper.Can anyone please tel me how to do the zoom on double tap of imageview of viewflipper.Thanks in advance..

Answer 1

您可以使用ImageViewZoom而不是常规的ImageView描述在这里 。

Answer 2

You can use a GestureListener to detect double taps in your viewflipper class.

public ZoomingViewFlipper(Context context, AttributeSet attrs) {
    super(context, attrs);  
    gestureDetector = new GestureDetector(context, new GestureListener());
}   

@Override
public boolean onTouchEvent(MotionEvent e) {
    return gestureDetector.onTouchEvent(e);
}     

private class GestureListener extends GestureDetector.SimpleOnGestureListener {

    @Override
    public boolean onDown(MotionEvent e) {
        return true;
    }        
    @Override
    public boolean onDoubleTap(MotionEvent e) {
        //Your method to zoom the imageview    
        return true;
    }
}

For the actual zooming in you use a solution from here or use ImageViewZoom or write your own method.