从url下载mp3文件的方法 [英] method to download mp3 file from url

问题描述

如果有人要下载文件而不是播放文件，则将使用什么功能或方法.

我要下载文件.如果可以，请提供一些示例，或者给我一些有关此概念的想法.

非常感谢.

解决方案

按照以下方式发送请求.

NSURL *url = [NSURL URLWithString:[fileUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
theRequest = [NSMutableURLRequest requestWithURL:url];
[theRequest setValue:[NSString stringWithFormat:@"bytes=%ld-",0] forHTTPHeaderField:@"Range"];
[theRequest addValue: @"pdf" forHTTPHeaderField:@"Content-Type"];
[theRequest setHTTPMethod:@"POST"];
webData = [[NSMutableData alloc] init];
theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];

实施以下方法...

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [webData appendData:data]; }

-(void)connectionDidFinishLoading:(NSURLConnection )connection {
/******CODE FOR WRITING FILE*************/ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

}

If someone want to download a file instead of playing it, then what functionality or method will be used for it.

I want to download the file. Provide me some example if u can, or give me some idea about this concept.

Thankyou very much.

解决方案

Send request following way.

NSURL *url = [NSURL URLWithString:[fileUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
theRequest = [NSMutableURLRequest requestWithURL:url];
[theRequest setValue:[NSString stringWithFormat:@"bytes=%ld-",0] forHTTPHeaderField:@"Range"];
[theRequest addValue: @"pdf" forHTTPHeaderField:@"Content-Type"];
[theRequest setHTTPMethod:@"POST"];
webData = [[NSMutableData alloc] init];
theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES];

Implement following methods...

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [webData appendData:data]; }

-(void)connectionDidFinishLoading:(NSURLConnection )connection {
/******CODE FOR WRITING FILE*************/ NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentPath = [paths objectAtIndex:0];

NSString *directoryPath = [documentPath stringByAppendingPathComponent:[MAIN_DIRECTORY stringByAppendingPathComponent:fileDate]];

[[NSFileManager defaultManager] createDirectoryAtPath:directoryPath withIntermediateDirectories:NO attributes:nil error:nil];

[webData writeToFile:fileName atomically:YES];

}

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