How to get the new width and height of View after

2019-07-19 01:00发布

问题:

I used a ScaleAnimation to resize my ImageView. But after the animation is complete, how can I get the dimension of my ImageView or the bitmap in that. Thanks

Here is my code:

ScaleAnimation animation = new ScaleAnimation(m_oldZoomRatio, m_currentZoomRatio, m_oldZoomRatio, m_currentZoomRatio);

        animation.setFillAfter(true);
        animation.setFillEnabled(true);
        animation.setAnimationListener(new AnimationListener() {

            public void onAnimationStart(Animation animation) {
            }

            public void onAnimationRepeat(Animation animation) {
            }

            public void onAnimationEnd(Animation animation) {
            }
        });
        m_child.startAnimation(animation);

Where m_oldZoomRatio != m_currentZoomRatio.

I can see my view changes its layout while running. But when get its width and height, I receive the value in original when the view is created.

回答1:

try to use animation listener where on animation end you can change the width and height

  <animation-object>.setAnimationListener(new AnimationListener() 
     {

        @Override
        public void onAnimationEnd(Animation arg0) {
            img.getWidth();
                img.getHeight();
                  //OR 
                 int h=img.getLayoutParams().height;
                 int w=img.getLayoutParams().width;
                // For changing actual height and width
             view.getLayoutParams().width = newWidth; 
               view.getLayoutParams().height =    newHeight; 
view.requestLayout();

        }

        @Override
        public void onAnimationRepeat(Animation arg0) {


        }

        @Override
        public void onAnimationStart(Animation arg0) {


        }

     });