信纸条纹

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

[self initWithOtherUI];

}

- (void)initWithOtherUI

{

// 1.生成一张以后用于平铺的小图片

CGSize size = CGSizeMake(self.view.bounds.size.width, 35);

UIGraphicsBeginImageContextWithOptions(size, NO, 0);

// 2.画矩形

CGContextRef ctx = UIGraphicsGetCurrentContext();

CGFloat height = 35;

CGContextAddRect(ctx, CGRectMake(0, 0, self.view.bounds.size.width, height));

[[UIColor whiteColor] set];

CGContextFillPath(ctx);

// 3.画线条

CGFloat lineWidth = 2;

CGFloat lineY = height - lineWidth;

CGFloat lineX = 20;

CGContextMoveToPoint(ctx, lineX, lineY);

CGContextAddLineToPoint(ctx, self.view.bounds.size.width-40, lineY);

[[UIColor blackColor] set];

CGContextStrokePath(ctx);

UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

UIColor *color = [UIColor colorWithPatternImage:image];

self.view.backgroundColor = color;

}