图片的保存与读取 

1 //转换成NSData来保存图片
2 0NSString *path=[NSString stringWithFormat:@"%@/Documents/%@.jpg",NSHomeDirectory(),@"image"];  
3 NSData *image = UIImageJPEGRepresentation(imageUrl,0);      
4 [image writeToFile:pathatomically:YES];
5 
6 NSString *path=[NSString stringWithFormat:@"%@/Documents/%@.jpg",NSHomeDirectory(),@"image"];  
7 UIImage *image =[[UIImage alloc]initWithContentsOfFile:path];  
8 UIImageView* imageView=[[UIImageView alloc]initWithImage:imageUrl];

 

posted @ 2013-09-02 10:58  wangzhenxiang  阅读(134)  评论(0)  编辑  收藏  举报