//
//  ViewController.m
//  AFN下载
//
//  Created by chen on 15/2/22.
//  Copyright (c) 2015年 lanrw. All rights reserved.
//#import "ViewController.h"
#import "AFNetworking.h"@interface ViewController () <NSURLSessionDownloadDelegate>
@property (nonatomic,strong) NSURLSession *session;
@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];
}- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{/***  简单的下载*/
//    [self downloadFile];/***  有进度的下载*/[self downloadFile2];
}/***  简单的下载*/
- (void)downloadFile
{AFHTTPSessionManager *manger = [AFHTTPSessionManager manager];NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://localhost/post/abc/07.mp4"] cachePolicy:1 timeoutInterval:6];[[manger downloadTaskWithRequest:request progress:NULL destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {NSString *filePath = [NSTemporaryDirectory() stringByAppendingPathComponent:response.suggestedFilename];NSURL *url = [NSURL fileURLWithPath:filePath];return url;} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {NSLog(@"%@",error.localizedDescription);}] resume];
}
/***  使用代理监控下载进度*/
- (void)downloadFile2
{NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://localhost/post/abc/07.mp4"] cachePolicy:1 timeoutInterval:15];[[self.session downloadTaskWithRequest:request]resume];
}#pragma mark - 代理方法
- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:(NSURL *)location
{NSString *pathFile = [NSTemporaryDirectory() stringByAppendingPathComponent:downloadTask.response.suggestedFilename];NSFileManager *manger = [NSFileManager defaultManager];[manger copyItemAtPath:location.path toPath:pathFile error:NULL];
}
// 进度数据
- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWritten totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite
{float progress = (float)totalBytesWritten / totalBytesExpectedToWrite;NSLog(@"%f",progress);
}// 懒加载
- (NSURLSession *)session
{if(_session == nil){NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];_session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:nil];}return _session;
}@end

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