SDWebImage自动下载图片

加入SDWebImage文件夹（其实就一个NSString+URLEncoding，后面会贴出来）

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ViewController.m

#import "ViewController.h"
#import "UIImageView+WebCache.h"
#import "NSString+URLEncoding.h"

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    UIImageView* imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 240)];
    [self.view addSubview:imageView];
    [imageView release];
    
    NSURL* url = [NSURL URLWithString:@"http://192.168.88.8/sns/my/headimage.php?uid=865"];
    //[imageView setImageWithURL:url placeholderImage:[UIImage imageName:@"默认图片.png"]];
    
    //?search=周一//中文怎么存
    
    NSString* str = @"周一";
    //str = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    str = [str urlEncodeString];
    NSLog(@"%@",str);
    
}

@end

 

 

 

 

NSString+URLEncoding.h

#import <Foundation/Foundation.h>

@interface NSString(URLEncoding)

- (NSString *)urlEncodeString;

@end

NSString+URLEncoding.m

#import "NSString+URLEncoding.h"

@implementation NSString(URLEncoding)
- (NSString *)urlEncodeString
{
    NSString *result = (NSString *)CFURLCreateStringByAddingPercentEscapes(NULL, 
                (CFStringRef)self, 
                NULL, 
                (CFStringRef)@";/?:@&=$+{}<>,",
                kCFStringEncodingUTF8);
    return [result autorelease];
}
@end