解决了语音上传到问题，接下来要解决下载播放问题

Pods/Qiniu/QiniuSDK/Recorder/QNFileRecorder.h

@@ -0,0 +1,55 @@
+//
+//  QNFileRecorder.h
+//  QiniuSDK
+//
+//  Created by bailong on 14/10/5.
+//  Copyright (c) 2014年 Qiniu. All rights reserved.
+//
+
+#import "QNRecorderDelegate.h"
+#import <Foundation/Foundation.h>
+
+/**
+ *    将上传记录保存到文件系统中
+ */
+@interface QNFileRecorder : NSObject <QNRecorderDelegate>
+
+/**
+ *    用指定保存的目录进行初始化
+ *
+ *    @param directory 目录
+ *    @param error     输出的错误信息
+ *
+ *    @return 实例
+ */
++ (instancetype)fileRecorderWithFolder:(NSString *)directory
+                                 error:(NSError *__autoreleasing *)error;
+
+/**
+ *    用指定保存的目录，以及是否进行base64编码进行初始化，
+ *
+ *    @param directory 目录
+ *    @param encode    为避免因为特殊字符或含有/，无法保存持久化记录，故用此参数指定是否要base64编码
+ *    @param error     输出错误信息
+ *
+ *    @return 实例
+ */
++ (instancetype)fileRecorderWithFolder:(NSString *)directory
+                             encodeKey:(BOOL)encode
+                                 error:(NSError *__autoreleasing *)error;
+
+/**
+ *    从外部手动删除记录，如无特殊需求，不建议使用
+ *
+ *    @param key    持久化记录key
+ *    @param dir    目录
+ *    @param encode 是否encode
+ */
++ (void)removeKey:(NSString *)key
+        directory:(NSString *)dir
+        encodeKey:(BOOL)encode;
+
+// 删除所有修改时间在 date 之前的缓存
+- (NSError *)deleteAll;
+
+@end

Pods/Qiniu/QiniuSDK/Recorder/QNFileRecorder.m

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+//
+//  QNFileRecorder.m
+//  QiniuSDK
+//
+//  Created by bailong on 14/10/5.
+//  Copyright (c) 2014年 Qiniu. All rights reserved.
+//
+
+#import "QNFileRecorder.h"
+#import "QNUrlSafeBase64.h"
+
+@interface QNFileRecorder ()
+
+@property (copy, readonly) NSString *directory;
+@property BOOL encode;
+
+@end
+
+@implementation QNFileRecorder
+
+- (NSString *)pathOfKey:(NSString *)key {
+    return [QNFileRecorder pathJoin:key path:_directory];
+}
+
++ (NSString *)pathJoin:(NSString *)key
+                  path:(NSString *)path {
+    return [[NSString alloc] initWithFormat:@"%@/%@", path, key];
+}
+
++ (instancetype)fileRecorderWithFolder:(NSString *)directory
+                                 error:(NSError *__autoreleasing *)perror {
+    return [QNFileRecorder fileRecorderWithFolder:directory encodeKey:false error:perror];
+}
+
++ (instancetype)fileRecorderWithFolder:(NSString *)directory
+                             encodeKey:(BOOL)encode
+                                 error:(NSError *__autoreleasing *)perror {
+    NSError *error;
+    [[NSFileManager defaultManager] createDirectoryAtPath:directory withIntermediateDirectories:YES attributes:nil error:&error];
+    if (error != nil) {
+        if (perror) {
+            *perror = error;
+        }
+        return nil;
+    }
+
+    return [[QNFileRecorder alloc] initWithFolder:directory encodeKey:encode];
+}
+
+- (instancetype)initWithFolder:(NSString *)directory encodeKey:(BOOL)encode {
+    if (self = [super init]) {
+        _directory = directory;
+        _encode = encode;
+    }
+    return self;
+}
+
+- (NSError *)set:(NSString *)key
+            data:(NSData *)value {
+    NSError *error;
+    if (_encode) {
+        key = [QNUrlSafeBase64 encodeString:key];
+    }
+    [value writeToFile:[self pathOfKey:key] options:NSDataWritingAtomic error:&error];
+    return error;
+}
+
+- (NSData *)get:(NSString *)key {
+    if (_encode) {
+        key = [QNUrlSafeBase64 encodeString:key];
+    }
+    return [NSData dataWithContentsOfFile:[self pathOfKey:key]];
+}
+
+- (NSError *)del:(NSString *)key {
+    NSError *error;
+    if (_encode) {
+        key = [QNUrlSafeBase64 encodeString:key];
+    }
+    [[NSFileManager defaultManager] removeItemAtPath:[self pathOfKey:key] error:&error];
+    return error;
+}
+
+- (NSError *)deleteAll {
+    NSString *filePath = self.directory;
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+    
+    BOOL isDir = NO;
+    BOOL existed = [fileManager fileExistsAtPath:filePath isDirectory:&isDir];
+    if ( !(isDir == YES && existed == YES) ) {
+        return nil;
+    }
+    
+    //文件夹
+    NSError *error;
+    [fileManager removeItemAtPath:filePath error:&error];
+    if (error != nil) {
+        return error;
+    }
+    
+    [fileManager createDirectoryAtPath:filePath withIntermediateDirectories:YES attributes:nil error:&error];
+    return error;
+}
+
+- (NSString *)getFileName{
+    return nil;
+}
+
++ (void)removeKey:(NSString *)key
+        directory:(NSString *)dir
+        encodeKey:(BOOL)encode {
+    if (encode) {
+        key = [QNUrlSafeBase64 encodeString:key];
+    }
+    NSError *error;
+    NSString *path = [QNFileRecorder pathJoin:key path:dir];
+    [[NSFileManager defaultManager] removeItemAtPath:path error:&error];
+    if (error) {
+        NSLog(@"%s,%@", __func__, error);
+    }
+}
+
+- (NSString *)description {
+    return [NSString stringWithFormat:@"<%@: %p, dir: %@>", NSStringFromClass([self class]), self, _directory];
+}
+
+@end

Pods/Qiniu/QiniuSDK/Recorder/QNRecorderDelegate.h

@@ -0,0 +1,60 @@
+//
+//  QNRecorderDelegate.h
+//  QiniuSDK
+//
+//  Created by bailong on 14/10/5.
+//  Copyright (c) 2014年 Qiniu. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+/**
+ *    为持久化上传记录，根据上传的key以及文件名 生成持久化的记录key
+ *
+ *    @param uploadKey 上传的key
+ *    @param filePath  文件名
+ *
+ *    @return 根据uploadKey, filepath 算出的记录key
+ */
+typedef NSString * (^QNRecorderKeyGenerator)(NSString *uploadKey, NSString *filePath);
+
+/**
+ *    持久化记录接口，可以实现将记录持久化到文件，数据库等
+ */
+@protocol QNRecorderDelegate <NSObject>
+
+/**
+ *    保存记录
+ *
+ *    @param key   持久化记录的key
+ *    @param value 持久化记录上传状态信息
+ *
+ *    @return 错误信息，成功为nil
+ */
+- (NSError *)set:(NSString *)key
+            data:(NSData *)value;
+
+/**
+ *    取出保存的持久化上传状态信息
+ *
+ *    @param key 持久化记录key
+ *
+ *    @return 上传中间状态信息
+ */
+- (NSData *)get:(NSString *)key;
+
+/**
+ *    删除持久化记录，一般在上传成功后自动调用
+ *
+ *    @param key 持久化记录key
+ *
+ *    @return 错误信息，成功为nil
+ */
+- (NSError *)del:(NSString *)key;
+
+/**
+ *   缓存文件名称
+ */
+- (NSString *)getFileName;
+
+@end