iOS下载图片保存在本地

最新推荐文章于 2018-08-29 15:19:00 发布

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最新推荐文章于 2018-08-29 15:19:00 发布

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分类专栏： iOS数据存储

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         -(
         void
         )test{
        
         NSLog(@
         "Downloading…"
         );
        
         // Get an image from the URL below
        
         UIImage *image = [[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@
         "http://www.objectgraph.com/images/og_logo.png"
         ]]];
        
         NSLog(@
         "%f,%f"
         ,image.size.width,image.size.height);
        
         // Let’s save the file into Document folder.
        
         // You can also change this to your desktop for testing. (e.g. /Users/kiichi/Desktop/)
        
         // NSString *deskTopDir = @”/Users/kiichi/Desktop”;
        
         NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
        
         // If you go to the folder below, you will find those pictures
        
         NSLog(@
         "%@"
         ,docDir);
        
         NSLog(@
         "saving png"
         );
        
         NSString *pngFilePath = [NSString stringWithFormat:@
         "%@/test.png"
         ,docDir];
        
         NSData *data1 = [NSData dataWithData:UIImagePNGRepresentation(image)];
        
         [data1 writeToFile:pngFilePath atomically:YES];
        
         //    NSLog(@"saving jpeg");
        
         //    NSString *jpegFilePath = [NSString stringWithFormat:@"%@/test.jpeg",docDir];
        
         //    NSData *data2 = [NSData dataWithData:UIImageJPEGRepresentation(image, 1.0f)];//1.0f = 100% quality
        
         //    [data2 writeToFile:jpegFilePath atomically:YES];
        
         NSLog(@
         "saving image done"
         );
        
         [image release];
        
         }