Drawing a curve chart for ios

Drawing a curve chart for ios

-(Void) drawLine {// view is the curve background view UIView * view = [[UIView alloc] initWithFrame: CGRectMake (10, 0,300,300)]; view. backgroundColor = [UIColor whiteColor]; [self. view addSubview: view]; // first, UIBezierPath draws a line segment UIBezierPath * path = [UIBezierPath bezierPath]; // four points CGPoint point = CGPointMake (10, 10 ); CGPoint point1 = CGPointMake (200,100); CGPoint point2 = CGPointMake (240,200); CGPoint point3 = CGPointMake (290,200); NSArray * arr = [NSArray arrayWithObjects: [NSValue valueWithCGPoint: point] [NSValue identifier: point1], [NSValue valueWithCGPoint: point2], [NSValue valueWithCGPoint: point3], nil]; NSIndexSet * set = [NSIndexSet identifier: NSMakeRange (0, arr. count)];

// Second, draw this sentence

[Arr enumerateObjectsAtIndexes: set options: 0 usingBlock: ^ (NSValue * pointValue, NSUInteger idx, BOOL * stop) {CGPoint point = [pointValue CGPointValue]; [path addLineToPoint: point]; // (1) rect line drawing CGRect rect; rect. origin. x = point. *-1.5; rect. origin. y = point. y-1.5; rect. size. width = 4; rect. size. height = 4; // (2) rect Ray painting // CGRect rect = CGRectMake (10, 10, 1, 1); UIBezierPath * arc = [UIBezierPath bezierPathWithOvalInRect: rect]; [path appendPath: arc];}]; // third, UIBezierPath and CAShapeLayer are associated with CAShapeLayer * lineLayer = [CAShapeLayer layer]; lineLayer. frame = CGRectMake (0,150,320,400); lineLayer. fillColor = [UIColor redColor]. CGColor; lineLayer. path = path. CGPath; lineLayer. strokeColor = [UIColor redColor]. CGColor; [view. layer addSublayer: lineLayer]; // the following code is appended. // (1) it is opened like a canvas and appears to have an animated UIView * view1 = [[UIView alloc] initWithFrame: CGRectMake (0,100,320,400)]; view1.backgroundColor = [UIColor whiteColor]; [self. view addSubview: view1]; [UIView animateWithDuration: 5 Animation: ^ {view1.frame = CGRectMake (320,100,320,400);}];}