语音保存 ，与下载，

 1,先有文件名，然后给 这个路径 写入音频数据，这就算保存到本地了，

  self.recordFilePath = [VoiceRecorderBaseVCgetPathByFileName:recordFileNameofType:@"wav"];

    self.recorder = [[[AVAudioRecorderalloc]initWithURL:[NSURLURLWithString:recordFilePath]

                                                settings:[VoiceRecorderBaseVC getAudioRecorderSettingDict]

                                                   error:nil]autorelease];

2，targetPath，下载到指定路径，

    AFDownloadRequestOperation *downloadOperation = [[AFDownloadRequestOperation alloc] initWithRequest:request targetPath:targetPath shouldResume:shouldResume];

3，生成一个 NSOperationQueue队列，只有向其中 添加 AFDownloadRequestOperation，那么便会自动调用，

        [downloadQueue addOperation:downloadOperationOri];

        AFDownloadRequestOperation

4，这玩意 据说是 监听下载进程的，比如下载了 10%，11% etc，

[downloadOperation setProgressiveDownloadProgressBlock:^(AFDownloadRequestOperation *operation, NSInteger bytesRead, long long totalBytesRead, long long totalBytesExpected, long long totalBytesReadForFile, long long totalBytesExpectedToReadForFile) {

        [selfdownloadOperation:operation progressTotalBytesReadForFile:totalBytesReadForFile totalBytesExpectedToReadForFile:totalBytesExpected];

    }];

上传进程，

- (void)setUploadProgressBlock:(void (^)(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite))block {

    self.uploadProgress = block;

}

下载进程，

 - (void)setDownloadProgressBlock:(void (^)(NSUInteger bytesRead, long long totalBytesRead, long long totalBytesExpectedToRead))block {

    self.downloadProgress = block;

}

5，AFNetWorking，

AFJSONRequestOperation，

NSMutableURLRequest，

NSOperationQueue，

6，nsrequest,nsconnection

7,nsoperation,nsoperationqueue,

8,socket,stream,

9,流程

支持协议:   

• 文件传输协议(ftp://)

• 超文本传输协议(http://)

• 安全128-bit超文本传输协议(https://)

• 本地文件路径(file:///)

访问URL步骤：

• 构造NSURL,，使用NSURL构造一个URL

• 生成一个NSURLRequest，使用NSURLRequest构造一个请求

• 通过NSURLConnection发送请求，使用NSURLConnection发送一个请求,并返回数

• 通过返回的NSURLResponse和NSError分析结果 ，使用NSURLResponse和NSError来监测响应和错误信息

10,

-(void)network

{

    NSURLConnection *connection;

    connection = [connection initWithRequest:[NSURLRequestrequestWithURL:[NSURLURLWithString:@"http://baidu.com"]] delegate:self];

    [connection start];

}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error

{    

}

11,pragma

/* The file type to record is inferred from the file extension. Will overwrite a file at the specified url if a file exists */

- (id)initWithURL:(NSURL *)url settings:(NSDictionary *)settings error:(NSError **)outError;