之前一直想要个加载的loading。却不知道用什么好,然后就想到了太极图标,最后效果是有了,不过感觉用来做loading简直丑到爆!!!
实现效果很简单,我们不要用什么贝塞尔曲线啥的,因为太极无非就是圆圆圆,只要画圆就ok了。来上代码:
因为有黑有白,所以定义2个画笔分别为黑和白。
private void inital() {whitePaint = new Paint();whitePaint.setAntiAlias(true);whitePaint.setColor(Color.WHITE);blackPaint = new Paint();blackPaint.setAntiAlias(true);blackPaint.setColor(Color.BLACK);}
最后来画3个圆就可以解决了:
protected void onDraw(Canvas canvas) {super.onDraw(canvas);Point centerPoint = new Point(width / 2, height / 2);canvas.translate(centerPoint.x, centerPoint.y);canvas.rotate(angle);//绘制两个半圆int radius = Math.min(bitmapwidth, bitmapheight) / 2;RectF rect = new RectF(-radius, -radius, radius, radius); //绘制区域canvas.drawArc(rect, 90, 180, true, blackPaint); //绘制黑色半圆canvas.drawArc(rect, -90, 180, true, whitePaint); //绘制白色半圆//绘制两个小圆int smallRadius = radius / 2;canvas.drawCircle(0, -smallRadius, smallRadius, blackPaint);canvas.drawCircle(0, smallRadius, smallRadius, whitePaint);//绘制鱼眼canvas.drawCircle(0, -smallRadius, smallRadius / 4, whitePaint);canvas.drawCircle(0, smallRadius, smallRadius / 4, blackPaint);if (load) {angle += 10;if (angle >= 360) {angle = 0;}}invalidate();}
是不是很简单,也就几行代码就解决了,一开始我还打算用贝塞尔曲线的(疯了!!)。