AFNetworking的基本使用

網(wǎng)絡(luò)請(qǐng)求

• AFNetworking的基本用法和NSURLSession的用法基本是相同的
• AFNetworking的基本使用類
• AFHTTPSessionManager的功能

• 注意:如果要想刷新頁(yè)面這些需要在主線程進(jìn)行操作的任務(wù),其實(shí)就在block中進(jìn)行就可以,因?yàn)锳FNetworking已經(jīng)幫你回到了主線程

get請(qǐng)求

   AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    //添加返回的值的類型
     mgr.responseSerializer = [AFHTTPResponseSerializer serializer];
    [mgr GET:@"http://b.hiphotos.baidu.com/image/w%3D2048/sign=6be5fc5f718da9774e2f812b8469f919/8b13632762d0f703b0faaab00afa513d2697c515.jpg" parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {
    //如果要顯示進(jìn)度,就要來到這里,由于請(qǐng)求下來的數(shù)據(jù)是data,用代理方法是一段一段下來的,所以只要下來一段,就會(huì)執(zhí)行這個(gè)block,所有用當(dāng)前進(jìn)度除以總進(jìn)度就會(huì)展現(xiàn)出下載的進(jìn)度條
         [self.slider setValue:1.0 * downloadProgress.completedUnitCount / downloadProgress.totalUnitCount animated:YES];
        NSLog(@"進(jìn)度 = %f",1.0 * downloadProgress.completedUnitCount / downloadProgress.totalUnitCount);
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
    //成功就會(huì)走這里,responseObject是字典或者數(shù)組
        NSLog(@"%@",responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    //失敗就會(huì)走到這里
        NSLog(@"err = %@",error);
    }];

post請(qǐng)求

    AFHTTPSessionManager *mgr =[AFHTTPSessionManager manager];
    //這里可以添加評(píng)論,把評(píng)論放到這里,放入parameters字典中返回給服務(wù)器,請(qǐng)求成功后刷新cell就會(huì)展現(xiàn)評(píng)論
    NSString *content = @"你別吃了,再吃就胖死了";
    NSString *str =[content stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
    [mgr POST:@"http://api2.pianke.me/comment/add" parameters:@{@"auth":@"XZU7RH7m1861DC8Z8H8HvkTJxQMGoPLGO9zo4XDA0cWP22NdFSh9d7fo",@"client":@1,@"content":str,@"contentid":@"553a073adfa688b70300001c",@"deviceid":@"6D4DD967-5EB2-40E2-A202-37E64F3BEA31",@"recid":@"",@"reuid":@"",@"version":@"3.0.6"}
constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        //上傳數(shù)據(jù)(這里只做上傳數(shù)據(jù))
    } progress:^(NSProgress * _Nonnull uploadProgress) {
        //進(jìn)度條
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        //成功,responseObject就是返回的數(shù)據(jù)
        NSLog(@"%@",responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        //失敗
        NSLog(@"%@",error);
    }];

下載大文件

   AFHTTPSessionManager *mgr =[AFHTTPSessionManager manager];
    //設(shè)置請(qǐng)求
    NSURLRequest *req = [NSURLRequest requestWithURL:[NSURL URLWithString: @"網(wǎng)絡(luò)請(qǐng)求" ]];
    [mgr downloadTaskWithRequest:req progress:^(NSProgress * _Nonnull downloadProgress) {
        //這里是進(jìn)度條
    } destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) {
        //這里第一個(gè)參數(shù)你要給一個(gè)文件下載的路徑
    } completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) {
        //這里是下載完成給你的響應(yīng),文件路徑,錯(cuò)誤,
    }];

文件上傳

    [mgr POST:@"http://api2.pianke.me/comment/add" parameters:nil
constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        //設(shè)置上傳的文件
    NSData *data = [NSData dataWithContentsOfFile:@"用戶上傳的本地文件的地址"];
    //這里設(shè)置上傳文件的請(qǐng)求頭,請(qǐng)求體的設(shè)置AFMultipartFormData幫你拼接好了,只要調(diào)下面的方法就可以了
    [formData appendPartWithFileData:data name:<#(nonnull NSString *)#> fileName:<#(nonnull NSString *)#> mimeType:<#(nonnull NSString *)#>];
    } progress:^(NSProgress * _Nonnull uploadProgress) {
        //進(jìn)度條
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        //上傳成功,返回響應(yīng)
        NSLog(@"%@",responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        //失敗
        NSLog(@"%@",error);
    }];

監(jiān)聽網(wǎng)絡(luò)狀態(tài)

• 一般在AppDelegate里面監(jiān)聽的是整個(gè)app的狀態(tài),在控制器監(jiān)聽的是當(dāng)前的頁(yè)面,
• 如果監(jiān)聽的話可以寫個(gè)bool型的方法去監(jiān)聽,返回是否有網(wǎng)絡(luò)

//這里去監(jiān)聽是否有網(wǎng)
+ (BOOL)isNet
{
    return [AFNetworkReachabilityManager manager].reachableViaWiFi ||[AFNetworkReachabilityManager manager].reachableViaWWAN;
}
    //檢測(cè)網(wǎng)絡(luò)
    AFNetworkReachabilityManager *magr = [ AFNetworkReachabilityManager sharedManager];
    [magr setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        switch (status) {
            case AFNetworkReachabilityStatusUnknown:
                NSLog(@"不清楚");
                break;
            case AFNetworkReachabilityStatusNotReachable:
                NSLog(@"連接不上");
                break;
            case AFNetworkReachabilityStatusReachableViaWiFi:
                NSLog(@"WiFi");
                break;
            case AFNetworkReachabilityStatusReachableViaWWAN:
                NSLog(@"蜂窩網(wǎng)");
                break;
        }
    }];
    //開啟檢測(cè)
    [magr startMonitoring];