[第三方]SDWebImage获取网络图片控件的用法

#import "UIImageView+WebCache.h"

@interface WeatherViewController ()<UISearchBarDelegate>

@end

@implementation WeatherViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    UIImageView* iv=[[UIImageView alloc]initWithFrame:[UIScreen mainScreen].bounds];
    NSURL* imgURL=[NSURL URLWithString:@"http://img4.duitang.com/uploads/item/201401/13/20140113225430_ihnyJ.thumb.600_0.jpeg"];
    [iv sd_setImageWithURL:imgURL];
    //带placeholder的方法
    [iv sd_setImageWithURL:imgURL placeholderImage:[UIImage imageNamed:@"placeholder.png"]];
    [self.view addSubview:iv];
}