iOS项目相关@AFN&SDWeb的二次封装

一，AFNetworking跟SDWebImge是功能强大且常用的第三方，然而在实际应用中需要封装用来复用今天就跟大家分享一下AFN&SDWeb的二次封装

1.

HttpClient.h及.m

.h定义了HTTP常用的四种GET POST PUT DELETE 请求

一般分别用做增删减查

定义前预处理，请求成功处理，请求失败处理的block

及带多参数w的方法声明

.m设置请求类型跟响应类型，监听网络是否有网络，如果没有，弹出网络异常的警示框

2.

UIImageView+WebCache.h及.m

这是类别的方法，把网络请求图片封装起来

.h 定义加载成功，加载失败及加载进度的block

下载未成功时预设图片的加载方法及网络请求下载图片的方法声明

.m 

是两个方法的具体实现

 1 #import <Foundation/Foundation.h>
 2 #import "AFNetworking.h"
 3 
 4 //HTTP请求类别
 5 typedef NS_ENUM(NSInteger,HttpRequestType) {
 6     HttpRequestGet,
 7     HttpRequestPost,
 8     HttpRequestPut,
 9     HttpRequestDelete,
10 };
11 
12 
13 /**
14  *  请求前预处理block
15  */
16 typedef void(^PrepareExecuteBlock)(void);
17 
18 typedef void(^SuccessBlock)(NSURLSessionDataTask * task, id responseObject);
19 
20 typedef void(^FailureBlock)(NSURLSessionDataTask * task, NSError * error);
21 
22 @interface HttpClient : NSObject
23 
24 + (HttpClient *)defaultClient;
25 
26 /**
27  *  HTTP请求（GET,POST,PUT,DELETE）
28  *
29  *  @param url     请求地址
30  *  @param method  请求类型
31  *  @param params  请求参数
32  *  @param prepare 请求前预处理
33  *  @param success 请求成功处理
34  *  @param failure 请求失败处理
35  */
36 
37 - (void)requestWithPath:(NSString *)url
38                  method:(NSInteger)method
39             paramenters:(NSDictionary *)params
40          prepareExecute:(PrepareExecuteBlock)prepare
41                 success:(SuccessBlock)success
42                 failure:(FailureBlock)failure;
43 
44 
45 @end

  1 #import "HttpClient.h"
  2 
  3 @interface HttpClient ()
  4 
  5 @property (nonatomic, strong) AFHTTPSessionManager * manager;
  6 
  7 @property (nonatomic, assign) BOOL isConnect;
  8 
  9 @end
 10 
 11 @implementation HttpClient
 12 
 13 - (instancetype)init
 14 {
 15     self = [super init];
 16     if (self) {
 17         
 18         self.manager = [AFHTTPSessionManager manager];
 19         //设置请求类型
 20         self.manager.requestSerializer = [AFHTTPRequestSerializer serializer];
 21         //设置响应类型
 22         self.manager.responseSerializer = [AFJSONResponseSerializer serializer];
 23         
 24         self.manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json",@"text/html", @"text/json", @"text/javascript",@"text/plain",@"image/gif", nil];
 25         
 26         //开启监听
 27         [self openNetMonitoring];
 28         
 29     }
 30     return self;
 31 }
 32 
 33 - (void)openNetMonitoring {
 34     
 35     [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
 36         
 37         switch (status) {
 38             case AFNetworkReachabilityStatusUnknown:
 39                 self.isConnect = NO;
 40                 break;
 41             case AFNetworkReachabilityStatusNotReachable:
 42                 self.isConnect = NO;
 43                 break;
 44             case AFNetworkReachabilityStatusReachableViaWiFi:
 45                 self.isConnect = YES;
 46                 break;
 47             case AFNetworkReachabilityStatusReachableViaWWAN:
 48                 self.isConnect = YES;
 49                 break;
 50             default:
 51                 break;
 52         }
 53         
 54     }];
 55     
 56     [[AFNetworkReachabilityManager sharedManager] startMonitoring];
 57     
 58     self.isConnect = YES;
 59 }
 60 
 61 + (HttpClient *)defaultClient {
 62     
 63     static HttpClient * instance = nil;
 64     static dispatch_once_t onceToken;
 65     dispatch_once(&onceToken, ^{
 66         instance = [[self alloc] init];
 67     });
 68     return instance;
 69 }
 70 
 71 - (void)requestWithPath:(NSString *)url
 72                  method:(NSInteger)method
 73             paramenters:(NSDictionary *)params
 74          prepareExecute:(PrepareExecuteBlock)prepare
 75                 success:(SuccessBlock)success
 76                 failure:(FailureBlock)failure {
 77     
 78     NSLog(@"请求网络地址为：%@",url);
 79     
 80     if ([self isConnectionAvailable]) {
 81         
 82         //预处理
 83         if (prepare) {
 84             prepare();
 85         }
 86         
 87         switch (method) {
 88             case HttpRequestGet:
 89                 [self.manager GET:url parameters:params progress:nil success:success failure:failure];
 90                 break;
 91             case HttpRequestPost:
 92                 [self.manager POST:url parameters:params progress:nil success:success failure:failure];
 93                 break;
 94             case HttpRequestPut:
 95                 [self.manager PUT:url parameters:params success:success failure:failure];
 96                 break;
 97             case HttpRequestDelete:
 98                 [self.manager DELETE:url parameters:params success:success failure:failure];
 99                 break;
100             default:
101                 break;
102         }
103 
104     } else {
105         
106         [self showExceptionDialog];
107     }
108 }
109 
110 - (BOOL)isConnectionAvailable {
111     
112     return self.isConnect;
113 }
114 
115 - (void)showExceptionDialog {
116     
117     [[[UIAlertView alloc] initWithTitle:@"提示" message:@"网络连接异常，请检查网络连接" delegate:nil cancelButtonTitle:@"好的" otherButtonTitles: nil] show];
118 }
119 
120 @end

 1 #import <UIKit/UIKit.h>
 2 #import "UIImageView+WebCache.h"
 3 
 4 typedef void (^DownloadSuccessBlock) (SDImageCacheType cacheType, UIImage *image);
 5 typedef void (^DownloadFailureBlock) (NSError *error);
 6 typedef void (^DownloadProgressBlock) (CGFloat progress);
 7 
 8 @interface UIImageView (SDWebImage)
 9 
10 /**
11  *  SDWebImage 下载并缓存图片
12  *
13  *  @param url 图片的url
14  *
15  *  @param place 还未下载成功时的替换图片
16  *
17  */
18 - (void)downloadImage:(NSString *)url
19                 place:(UIImage *)place;
20 
21 /**
22  *  SDWebImage 下载并缓存图片和下载进度
23  *
24  *  @param url 图片的url
25  *
26  *  @param place 还未下载成功时的替换图片
27  *
28  *  @param success 图片下载成功
29  *
30  *  @param failure 图片下载失败
31  *
32  *  @param progress 图片下载进度
33  */
34 - (void)downloadImage:(NSString *)url
35                 place:(UIImage *)place
36               success:(DownloadSuccessBlock)success
37               failure:(DownloadFailureBlock)failure
38              received:(DownloadProgressBlock)progress;
39 
40 
41 
42 @end

 1 #import "UIImageView+SDWebImage.h"
 2 
 3 @implementation UIImageView (SDWebImage)
 4 
 5 - (void)downloadImage:(NSString *)url
 6                 place:(UIImage *)place
 7 {
 8     [self sd_setImageWithURL:[NSURL URLWithString:url] placeholderImage:place options:SDWebImageLowPriority | SDWebImageRetryFailed];
 9 }
10 
11 
12 - (void)downloadImage:(NSString *)url
13                 place:(UIImage *)place
14               success:(DownloadSuccessBlock)success
15               failure:(DownloadFailureBlock)failure
16              received:(DownloadProgressBlock)progress
17 {
18     [self sd_setImageWithURL:[NSURL URLWithString:url] placeholderImage:place options:SDWebImageRetryFailed | SDWebImageLowPriority progress:^(NSInteger receivedSize, NSInteger expectedSize) {
19         
20         progress((float)receivedSize/expectedSize);
21         
22     } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
23         
24         if (error) {
25             failure(error);
26         }else{
27             // image是下载好的图片
28             self.image = image;
29             success(cacheType, image);
30         }
31     }];
32 }
33 
34 @end