蓝懿教育 Session下载

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Session下载任务

【无下载过程】

NSString *path = @"";

    NSURL *url = [NSURL URLWithString:path];

    NSURLSession *session = [NSURLSession sharedSession];

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

    NSURLSessionDownloadTask *task = [session downloadTaskWithRequest:request completionHandler:^(NSURL * _Nullable location, NSURLResponse * _Nullable response, NSError * _Nullable error) {

        NSFileManager *fm = [NSFileManager defaultManager];

        [fm moveItemAtURL:location toURL:[NSURL fileURLWithPath:@"/Users/nil/Desktop/SONG.mp3"] error:nil];

    }];

    [task resume];

【有下载过程】

 NSString *path = @“ ”;

    NSURL *url = [NSURL URLWithString:path];

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

    NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];

    NSURLSession *session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:[NSOperationQueue mainQueue]];

    NSURLSessionDownloadTask *task = [session downloadTaskWithRequest:request];

    [task resume];

-(void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWritten totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite{

    //每部分大小、总大小、当前已下载大小

    NSLog(@"%lld---%lld---%lld",bytesWritten,totalBytesExpectedToWrite,totalBytesWritten);

    self.myPV.progress = totalBytesWritten*1.0/totalBytesExpectedToWrite;

}

- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask

didFinishDownloadingToURL:(NSURL *)location{

    NSFileManager *fm = [NSFileManager defaultManager];

    [fm moveItemAtURL:location toURL:[NSURL fileURLWithPath:@"/Users/nil/Desktop/haha.mp3"] error:nil];

}

蓝懿教育 Session下载

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原文地址：http://www.cnblogs.com/stuyingiOS/p/4892741.html