最近忙于搞javaee企业级应用，希望java服务端的前辈多多指教，故没怎么更新iOS相关，下面更新一个较为简单的iOS知识：
UIView:
- (void)drawRect:(CGRect)rect {
[super drawRect:rect];
CGRect frame = CGRectMake(50, 100, 100, 100);
/*画填充圆
*/
CGContextRef context = UIGraphicsGetCurrentContext();
[[UIColor whiteColor] set];
CGContextFillRect(context, rect);
CGContextAddEllipseInRect(context, frame);
[[UIColor orangeColor] set];
CGContextFillPath(context);
/*边框圆
*/
CGContextSetRGBStrokeColor(context, 255/255.0, 106/255.0, 0/255.0, 1);
CGContextSetLineWidth(context, 5);
CGContextAddArc(context, 50, 70, 20, 0, 2*M_PI, 0);
CGContextDrawPath(context, kCGPathStroke);
/*画直线
*/
CGRect markFrame = CGRectMake(100, 250, 200, 200);
[[UIColor orangeColor] set];
CGContextSetLineWidth(context, 4);
CGPoint points[5];
points[0] = CGPointMake(markFrame.origin.x,markFrame.origin.y);
points[1] = CGPointMake(markFrame.origin.x+markFrame.size.width/4, markFrame.origin.y+markFrame.size.height/2);
points[2] = CGPointMake(markFrame.origin.x+markFrame.size.width/2, markFrame.origin.y+5);
points[3] = CGPointMake(markFrame.origin.x+markFrame.size.width/4*3,markFrame.origin.y+markFrame.size.height/2);
points[4] = CGPointMake(markFrame.origin.x+markFrame.size.width, markFrame.origin.y);
CGContextAddLines(context, points, 5);
CGContextDrawPath(context, kCGPathStroke);
//边框圆
CGContextSetLineWidth(context, 5);
CGContextAddArc(context, markFrame.origin.x+markFrame.size.width/2, markFrame.origin.y+markFrame.size.height/2, markFrame.size.height/2-2, 0, 2*M_PI, 0);
CGContextDrawPath(context, kCGPathStroke);
/*曲线
*/
[[UIColor redColor] set];
CGContextSetLineWidth(context, 4.0);
CGContextSetStrokeColorWithColor(context, [UIColor orangeColor].CGColor);
CGContextMoveToPoint(context, 300, 370);
CGContextAddCurveToPoint(context, 193, 320, 100, 370, 100, 370);
CGContextStrokePath(context);
}
UIViewController：
#import "DrawViewController.h"
@interface DrawViewController ()
@end
@implementation DrawViewController
- (void)viewDidLoad {
[super viewDidLoad];
/*
*画虚线圆
*/
CAShapeLayer *dotteLine = [CAShapeLayer layer];
CGMutablePathRef dottePath = CGPathCreateMutable();
dotteLine.lineWidth = 2.0f ;
dotteLine.strokeColor = [UIColor orangeColor].CGColor;
dotteLine.fillColor = [UIColor clearColor].CGColor;
CGPathAddEllipseInRect(dottePath, nil, CGRectMake(50.0f, 50.0f, 200.0f, 200.0f));
dotteLine.path = dottePath;
NSArray *arr = [[NSArray alloc] initWithObjects:[NSNumber numberWithInt:10],[NSNumber numberWithInt:5], nil];
dotteLine.lineDashPhase = 1.0;
dotteLine.lineDashPattern = arr;
CGPathRelease(dottePath);
[self.view.layer addSublayer:dotteLine];
/*
*画实线圆
*/
CAShapeLayer *solidLine = [CAShapeLayer layer];
CGMutablePathRef solidPath = CGPathCreateMutable();
solidLine.lineWidth = 2.0f ;
solidLine.strokeColor = [UIColor orangeColor].CGColor;
solidLine.fillColor = [UIColor clearColor].CGColor;
CGPathAddEllipseInRect(solidPath, nil, CGRectMake(50.0f, 300.0f, 200.0f, 200.0f));
solidLine.path = solidPath;
CGPathRelease(solidPath);
[self.view.layer addSublayer:solidLine];
/*
*画虚线
*/
CAShapeLayer *dotteShapeLayer = [CAShapeLayer layer];
CGMutablePathRef dotteShapePath = CGPathCreateMutable();
[dotteShapeLayer setFillColor:[[UIColor clearColor] CGColor]];
[dotteShapeLayer setStrokeColor:[[UIColor orangeColor] CGColor]];
dotteShapeLayer.lineWidth = 2.0f ;
NSArray *dotteShapeArr = [[NSArray alloc] initWithObjects:[NSNumber numberWithInt:10],[NSNumber numberWithInt:5], nil];
[dotteShapeLayer setLineDashPattern:dotteShapeArr];
CGPathMoveToPoint(dotteShapePath, NULL, 20,500);
CGPathAddLineToPoint(dotteShapePath, NULL, 20, 285);
CGPathAddLineToPoint(dotteShapePath, NULL, 300,285);
[dotteShapeLayer setPath:dotteShapePath];
CGPathRelease(dotteShapePath);
[self.view.layer addSublayer:dotteShapeLayer];
/*
*画实线
*/
CAShapeLayer *solidShapeLayer = [CAShapeLayer layer];
CGMutablePathRef solidShapePath = CGPathCreateMutable();
[solidShapeLayer setFillColor:[[UIColor clearColor] CGColor]];
[solidShapeLayer setStrokeColor:[[UIColor orangeColor] CGColor]];
solidShapeLayer.lineWidth = 2.0f ;
CGPathMoveToPoint(solidShapePath, NULL, 20, 265);
CGPathAddLineToPoint(solidShapePath, NULL, 300,265);
CGPathAddLineToPoint(solidShapePath, NULL, 300,50);
[solidShapeLayer setPath:solidShapePath];
CGPathRelease(solidShapePath);
[self.view.layer addSublayer:solidShapeLayer];
}
