Objective C - 4 - 下载图片并且加载到View

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#import "LoadInternetImageViewController.h"

@interface
LoadInternetImageViewController ()

@property
(weak, nonatomic) IBOutlet
UIImageView *imageView;

@end

@implementation
LoadInternetImageViewController

- (void)viewDidLoad

{

    [super
viewDidLoad];

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

    [self
loadImage];

}

- (void)didReceiveMemoryWarning

{

    [super
didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

- (void)loadImage

{

    NSString
*imageUrlString = @"http://d.hiphotos.baidu.com/image/pic/item/7af40ad162d9f2d3940b70e5abec8a136327cca6.jpg";

    UIImage *downloadedImage = [self
downloadImage:imageUrlString];

    if(downloadedImage)

    {

        NSLog(@"Setting downloaded image to imageView.");

//        self.imageView.contentMode = UIViewContentModeScaleAspectFit;

        self.imageView.image = downloadedImage;

    }

    else

    {

        NSLog(@"Unable to find downloaded image.");

    }

}

-(UIImage *)downloadImage:(NSString
*)imageUrlString

{

    NSData
*imageStream = [NSData
dataWithContentsOfURL:[NSURL
URLWithString:imageUrlString]];

    if
(imageStream) {

        return
[UIImage imageWithData:imageStream];

    }

    return
nil;

}

@end