判断一个点是否在view上

- (void)inArea
{
CGMutablePathRef pathRef = CGPathCreateMutable();
CGPathMoveToPoint(pathRef, NULL, 4, 4);

CGPathAddLineToPoint(pathRef, NULL, 4, 14);

CGPathAddLineToPoint(pathRef, NULL, 14, 14);

CGPathAddLineToPoint(pathRef, NULL, 14, 4);

CGPathAddLineToPoint(pathRef, NULL, 4, 4);

CGPathCloseSubpath(pathRef);

CGPoint point=CGPointMake(5, 5);

CGPoint outPoint=CGPointMake(1, 1);

if (CGPathContainsPoint(pathRef, NULL, point, NO)) { NSLog(@"point in path!");

}

if (!CGPathContainsPoint(pathRef, NULL, outPoint, NO)) { NSLog(@"outPoint out path!");

}
}