大佬教程收集整理的这篇文章主要介绍了android dragshadowbuilder阴影大小，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
public class ImageDragShadowBuilder extends View.DragShadowBuilder { public ImageDragShadowBuilder(View v) { super(v); } @Override public void onProvideShadowMetrics(Point shadowSize,Point touchPoint) { shadowSize.set(getView().getWidth()*2,getView().getHeight()*2); touchPoint.set(getView().getWidth() / 2,getView().getHeight() / 2); }}
是什么原因？
private static class MyDragShadowBuilder extends View.DragShadowBuilder { private Point mScaleFactor; // Defines the constructor for myDragShadowBuilder public MyDragShadowBuilder(View v) { // Stores the View parameter passed to myDragShadowBuilder. super(v); } // Defines a callBACk that sends the drag shadow dimensions and touch point BACk to the // system. @Override public void onProvideShadowMetrics (Point size,Point touch) { // Defines local variables int width; int height; // Sets the width of the shadow to half the width of the original View width = getView().getWidth() / 2; // Sets the height of the shadow to half the height of the original View height = getView().getHeight() / 2; // Sets the size parameter's width and height values. these get BACk to the system // through the size parameter. size.set(width,height); // Sets size parameter to member that will be used for scaling shadow image. mScaleFactor = size; // Sets the touch point's position to be in the middle of the drag shadow touch.set(width / 2,height / 2); } @Override public void onDrawShadow(Canvas canvas) { // Draws the ColorDrawable in the Canvas passed in from the system. canvas.scale(mScaleFactor.x/(float)getView().getWidth(),mScaleFactor.y/(float)getView().getHeight()); getView().draw(canvas); } }
以上是大佬教程为你收集整理的android dragshadowbuilder阴影大小全部内容，希望文章能够帮你解决android dragshadowbuilder阴影大小所遇到的程序开发问题。
如果觉得大佬教程网站内容还不错，欢迎将大佬教程推荐给程序员好友。
本图文内容来源于网友网络收集整理提供，作为学习参考使用，版权属于原作者。
如您有任何意见或建议可联系处理。小编QQ：384754419，请注明来意。