一、将图片平铺填充整个View

UIImage *oldImage = [UIImage imageNamed：@"me"]；UIGraphicsBeginImageContextWithOptions（self.view.frame.size，NO，0.0）；[oldImage drawInRect:self.view.bounds];UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();UIGraphicsEndImageContext();self.view.backgroundColor = [UIColor colorWithPatternImage:newImage];

二、TableView的条纹背景

//1.创建一行背景图片CGFloat rowW = self.view.frame.size.width；CGFloat rowH = 40；UIGraphicsBeginImageContextWithOptions（CGSizeMake（rowW，rowH）， NO，0.0）；CGContextRef ctx = UIGraphicsGetCurrentContext（）；//画矩形框[[UIColor redColor] set]；CGContextAddRect（ctx，CGRectMake（0,0，rowW，rowH））；CGContextFillPath；//2.画线[[UIColor blackColor] set]；CGFloat lineWidth =2；CGFloat dividerX = 10；CGFloat dividerY = rowH - lineWidth；CGContextMoveToPoint（ctx，dividerX，dividerY）；CGContextAddLineToPoint（ctx，rowW - dividerX，dividerY）；CGContextStrokePath（ctx）；//3.取图UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext（）；//4.结束上下文UIGraphicsEndImageContext（）；//5.设置为背景色self.view.backgroundColor = [UIColor colorWithPatternImage:newImage];