android.widget.ZoomButtonsController.OnZoomListener的实例源码

项目：pickncrop    文件：MainActivity.java   

public void createZoomControls() {
    ZoomButtonsController zoomButtonsController = new ZoomButtonsController(
            imageView);
    zoomButtonsController.setVisible(true);
    zoomButtonsController.setAutodismissed(false);
    zoomButtonsController.setonZoomListener(new OnZoomListener() {

        public void onZoom(boolean zoomIn) {
            matrix = imageView.getimageMatrix();
            if (zoomIn) {
                matrix.postScale(1.05f,1.05f,0.5f * size,0.5f * size);
                imageView.setimageMatrix(matrix);
            } else {
                matrix.postScale(0.95f,0.95f,0.5f * size);
                imageView.setimageMatrix(matrix);
            }
            imageView.invalidate();
        }

        public void onVisibilityChanged(boolean visible) {
        }
    });
    RelativeLayout.LayoutParams zoomLayoutParams = new RelativeLayout.LayoutParams(
            LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
    zoomLayoutParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
    zoomLayoutParams.addRule(RelativeLayout.BELOW,R.id.imageViewCrop);
    viewManager.addView(zoomButtonsController.getContainer(),zoomLayoutParams);
}