Android自定义View实现弹性小球效果
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2024-03-07 09:15:50
照例先看效果图
自定义代码示例
public class bezierview extends view {
paint paint;//画笔...
照例先看效果图
自定义代码示例
public class bezierview extends view { paint paint;//画笔 path path;//路径 int radius = 50;//圆的半径 int time = 100;//计数时长 int index; int offsetindex; float viewx, viewy;//图形中心点坐标 float width;//屏幕宽度 float partwidth;//屏幕宽度的1/4 int paddingleft, paddingright;//图形内边距 float x1, y1, x2, y2, x3, y3, x4, y4;//圆形左上右下四个点 float x12, y12, x23, y23, x34, y34, x41, y41;//圆形左上右下四个点之间的渐变点 public bezierview(context context) { this(context, null); } public bezierview(context context, attributeset attrs) { this(context, attrs, 0); } public bezierview(context context, attributeset attrs, int defstyleattr) { super(context, attrs, defstyleattr); paint = new paint(); paint.setcolor(resourcescompat.getcolor(getresources(), r.color.colorprimary, null)); paint.setantialias(true); } @override protected void ondraw(canvas canvas) { paddingleft = getpaddingleft(); paddingright = getpaddingright(); width = getwidth() - paddingleft - paddingright; partwidth = width / 4; path = new path(); path.moveto(x1, y1); path.cubicto(x1, y1, x12, y12, x2, y2); path.cubicto(x2, y2, x23, y23, x3, y3); path.cubicto(x3, y3, x34, y34, x4, y4); path.cubicto(x4, y4, x41, y41, x1, y1); canvas.drawpath(path, paint); move(); } public void move() { new timer().schedule(new timertask() { @override public void run() { if (index < time - 1) { index++; viewx = width / time * index + paddingleft; viewy = 400; x1 = viewx - radius; x2 = viewx; x3 = viewx + radius; x4 = viewx; y1 = viewy; y2 = viewy - radius; y3 = viewy; y4 = viewy + radius; offsetindex = index % (time / 4) + 1; //根据图形移动到的区域进行曲线变化 float position = (viewx - paddingleft) / partwidth; //右边半圆 if (position >= 0 && position < 1) { x3 = viewx + radius + radius / (time / 4) * offsetindex; } else if (position >= 1 && position < 2) { x3 = viewx + radius + radius; } else if (position >= 2 && position < 3) { x3 = viewx + radius + radius - radius / (time / 4) * offsetindex; } else { x3 = viewx + radius; } x23 = x34 = x3; y12 = y23 = y2; //左边半圆 if (position >= 1 && position < 2) { x1 = viewx - radius - radius / (time / 4) * offsetindex; } else if (position >= 2 && position < 3) { x1 = viewx - radius - radius; } else if (position >= 3) { x1 = viewx - radius - radius + radius / (time / 4) * offsetindex; } else { x1 = viewx - radius; } x12 = x41 = x1; y34 = y41 = y4; postinvalidate(); } else { cancel(); } } }, 0, 5000); } }
总结
以上就是android自定义view实现弹性小球效果的全部内容,希望对大家开发android能带来一定的帮助,如果有疑问大家可以留言交流。谢谢大家对的支持。
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