ASI-文件下载

文件下载

#import "SNViewController.h"
#import "ASIHTTPRequest.h"

@interface SNViewController ()

@property(nonatomic, strong) ASIHTTPRequest *request;
@property (weak, nonatomic) IBOutlet UIProgressView *progressView;

@end

@implementation SNViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    [self download];
    
}

-(void)download
{
    //1.创建请求对象
    NSURL *url = [NSURL URLWithString:@"http://update.55115511.cn/android/suizb/szb.apk"];
    self.request = [ASIHTTPRequest requestWithURL:url];
    
    //2.设置所下载的文件保存路径
    NSString *cache = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)lastObject];
       NSString *filepath = [cache stringByAppendingPathComponent:@"szb.apk"];
    NSLog(@"%@", filepath);

    self.request.downloadDestinationPath = filepath;
    
    //3.设置下载代理
    self.request.downloadProgressDelegate = self.progressView;
    
    //4.支持断点下载
    self.request.allowResumeForFileDownloads = YES;
    
    //5.发送下载请求
    [self.request startAsynchronous];
    
}