iOS图文混排模仿新浪微博

本Demo采用富文本结合正则表达式实现UITableVIew上的图文混排及布局，提供超链接、@、$等功能，完全模仿新浪微博的功能，在数据请求上使用了AFJSONRequest，也使用了图片的异步加载，性能良好，值得学习。

// AFHTTPClient.m
//
// Copyright （c） 2011 Gowalla （http://gowalla.com/）
//
// Permission is hereby granted free of charge to any person obtaining a copy
// of this software and associated documentation files （the “Software“） to deal
// in the Software without restriction including without limitation the rights
// to use copy modify merge publish distribute sublicense and/or sell
// copies of the Software and to permit persons to whom the Software is
// furnished to do so subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED “AS IS“ WITHOUT WARRANTY OF ANY KIND EXPRESS OR
// IMPLIED INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM DAMAGES OR OTHER
// LIABILITY WHETHER IN AN ACTION OF CONTRACT TORT OR OTHERWISE ARISING FROM
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#import 

#import “AFHTTPClient.h“
#import “AFHTTPRequestOperation.h“

#import 

#ifdef _SYSTEMCONFIGURATION_H
#import 
#import 
#import 
#import 
#import 
#endif

#if defined（__IPHONE_OS_VERSION_MIN_REQUIRED）
#import 
#endif

#ifdef _SYSTEMCONFIGURATION_H
NSString * const AFNetworkingReachabilityDidChangeNotification = @“com.alamofire.networking.reachability.change“;
NSString * const AFNetworkingReachabilityNotificationStatusItem = @“AFNetworkingReachabilityNotificationStatusItem“;

typedef SCNetworkReachabilityRef AFNetworkReachabilityRef;
typedef void （^AFNetworkReachabilityStatusBlock）（AFNetworkReachabilityStatus status）;
#else
typedef id AFNetworkReachabilityRef;
#endif

typedef void （^AFCompletionBlock）（void）;

static NSString * AFbase64EncodedStringFromString（NSString *string） {
    NSData *data = [NSData dataWithBytes:[string UTF8String] length:[string lengthOfBytesUsingEncoding:NSUTF8StringEncoding]];
    NSUInteger length = [data length];
    NSMutableData *mutableData = [NSMutableData dataWithLength:（（length + 2） / 3） * 4];

    uint8_t *input = （uint8_t *）[data bytes];
    uint8_t *output = （uint8_t *）[mutableData mutableBytes];

    for （NSUInteger i = 0; i < length; i += 3） {
        NSUInteger value = 0;
        for （NSUInteger j = i; j < （i + 3）; j++） {
            value <<= 8;
            if （j < length） {
                value |= （0xFF & input[j]）;
            }
        }

        static uint8_t const kAFbase64EncodingTable[] = “ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/“;

        NSUInteger idx = （i / 3） * 4;
        output[idx + 0] = kAFbase64EncodingTable[（value >> 18） & 0x3F];
        output[idx + 1] = kAFbase64EncodingTable[（value >> 12） & 0x3F];
        out

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2013-11-05 13:30  WeiBoDemo\
     目录           0  2013-11-05 14:17  WeiBoDemo\WeiBoDemo\
     文件       38184  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFHTTPClient.h
     文件       54741  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFHTTPClient.m
     文件        6407  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFHTTPRequestOperation.h
     文件       13117  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFHTTPRequestOperation.m
     文件        5676  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFImageRequestOperation.h
     文件        9357  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFImageRequestOperation.m
     文件        3715  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFJSONRequestOperation.h
     文件        5804  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFJSONRequestOperation.m
     文件        3768  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFNetworkActivityIndicatorManager.h
     文件        5616  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFNetworkActivityIndicatorManager.m
     文件        1727  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFNetworking.h
     文件        3531  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFPropertyListRequestOperation.h
     文件        5665  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFPropertyListRequestOperation.m
     文件       19994  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFURLConnectionOperation.h
     文件       32158  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFURLConnectionOperation.m
     文件        5088  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFxmlRequestOperation.h
     文件        6427  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\AFxmlRequestOperation.m
     目录           0  2013-11-05 13:30  WeiBoDemo\WeiBoDemo\base.lproj\
     文件        1588  2013-11-05 13:30  WeiBoDemo\WeiBoDemo\base.lproj\Main.storyboard
     目录           0  2013-11-05 14:19  __MACOSX\
     目录           0  2013-11-05 14:19  __MACOSX\WeiBoDemo\
     目录           0  2013-11-05 14:19  __MACOSX\WeiBoDemo\WeiBoDemo\
     目录           0  2013-11-05 14:19  __MACOSX\WeiBoDemo\WeiBoDemo\base.lproj\
     文件         171  2013-11-05 13:30  __MACOSX\WeiBoDemo\WeiBoDemo\base.lproj\._Main.storyboard
     文件         359  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\Customobject.h
     文件         997  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\Customobject.m
     文件        4632  2013-10-11 20:34  WeiBoDemo\WeiBoDemo\emotionImage.plist
     目录           0  2013-11-05 13:30  WeiBoDemo\WeiBoDemo\en.lproj\
     文件          45  2013-11-05 13:30  WeiBoDemo\WeiBoDemo\en.lproj\InfoPlist.strings
............此处省略148个文件信息