资 源 简 介
Android制作水波动画效果的圆形进度条，下面是相关的定义代码：
private Paint mPaint; //绘制波形
private Paint mCirclePaint; //绘制圆形
private Path mPath; //记录波形的路径
private int width; //自定义view的宽度
private int height; //自定义view的高度
private int mCirclePaintRadius; //绘制圆形的半径
private int mStepSize; //绘制波形的完整周期的宽度
private int mMoveStartX; //绘制波形的初始位置,相当于震动的频率
private int mSinMax; //绘制波形的振幅
private int count = 3; //需要绘制完整波形的个数,个数越多，波形的周期越小
private Canvas mCircleCanvas;
private Bitmap mDest;
private int mCurrentProgress; //当前的进度
private boolean shouldChange; //用于控制正弦线的上升和下降
private Paint mTextPaint;
super.onDraw(canvas);
//线绘制一个实心圆
mCircleCanvas.drawCircle(width / 2, height / 2, mCirclePaintRadius, mCirclePaint);
//每次绘制记得调用reset()方法，否则当前绘制会和上次的绘制重叠
mPath.reset();
//下面的moveTo，lineTo,lineTo,lineTo主要是让当前正弦线的首位相接
