demo中实现自定义弧度属性动画
例子：创建FanChart 实现datasouce协议即可
#pragma mark ----- FanChartViewDataSouce -----
-(NSInteger)numberOfFanChartView:(FanChartView *)fanChartView{
//number数量
}
-(UIColor *)colorForFanChartView:(FanChartView *)fanChartView atIndex:(NSInteger)index{
//index对应的颜色
}
-(CGFloat)rateForFanChartView:(FanChartView *)fanChartView atIndex:(NSInteger)index{
//indx对应的比例
}
实现delegate协议回调
#pragma mark ----- FanChartViewDelegate -----
-(void)fanChartView:(FanChartView *)fanChartView didSelectIndex:(NSInteger)index{
//index选中块
}
-(void)fanChartView:(FanChartView *)fanChartView didDeselectIndex:(NSInteger)index{
//index取消选中块
}