UIBezierPath*_path；// 为全局变量
- (void)drawRect:(CGRect)rect {
[superdrawRect:rect];
//[self.image drawInRect:rect];
//把view裁剪成圆形
CGPointcenter =CGPointMake(CGRectGetMidX(rect),CGRectGetMidY(rect));
if(_path) {
_path=nil;
}
_path= [UIBezierPathbezierPath];
[_pathaddArcWithCenter:centerradius:rect.size.width/2.0startAngle:0endAngle:M_PI*2clockwise:YES];
[_pathclosePath];
//CAShapeLayer裁剪区域，超出区域部分不显示
//CAShapeLayer *shapeLayer = [CAShapeLayer layer];
//[shapeLayer setStrokeColor:[UIColor redColor].CGColor];
//shapeLayer.path = _path.CGPath;
//self.layer.mask = shapeLayer;
}
//点击在_path区域内响应，否则不响应
- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent*)event {
BOOLres = [superpointInside:pointwithEvent:event];
if(res) {
if([_pathcontainsPoint:point]) {
returnYES;
}
returnNO;
}
returnNO;
}
