AFN(反序列化+访问图片+访问网页+网络状态)

---

JSON

#import "ViewController.h"
#import "YYHttpTool.h"// 网络请求工具类，基于AFN的封装
@interface ViewController ()

@end

@implementation ViewController

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self JSON];
}

//AFN内部默认已经做了反序列化处理
-(void)JSON
{
    //1.创建会话管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    
    //参数单独写出来
    NSDictionary *dictM = @{@"type":@"JSON"};
    
    //2.发请求
    [manager GET:@"http://120.25.226.186:32812/video" parameters:dictM progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        
        //通过打印下面的代码可知,内部已经把JOSN数据转换层OC对象(字典)。即用responseObject表示出来，也就是服务器返回给访问者的数据类型是字典类型的数据
        NSLog(@"成功--%@",responseObject);
        NSLog(@"成功--%@",[responseObject class]);
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"失败--%@",error);
    }];
}

@end

截图:

---

XML

#import "ViewController.h"
#import "YYHttpTool.h"// 网络请求工具类，基于AFN的封装
@interface ViewController ()

@end

@implementation ViewController

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self XML];
}

-(void)XML
{
    //1.创建会话管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    
    //修改对响应体信息的解析方式（默认是用JSON解析数据,即1），修改为用XML解析数据(即2).如果注释2，则打印NSData数据
    //manager.responseSerializer = [AFJSONRequestSerializer serializer];//1
    manager.responseSerializer = [AFXMLParserResponseSerializer serializer];//2
    
    NSDictionary *dictM = @{@"type":@"XML"};
    
    //2.发请求
    [manager GET:@"http://120.25.226.186:32812/video" parameters:dictM progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        
        //NSLog(@"成功--%@",responseObject);
        NSXMLParser *parser = (NSXMLParser *)responseObject;
        
        //设置代理
        parser.delegate = self;
        
        //开始解析
        [parser parse];
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"失败--%@",error);
    }];
}

#pragma mark NSXMLParserDelegate
//开始解析某个元素的时候回调用，并且这个方法会被调用多次
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
    NSLog(@"%@--%@",elementName,attributeDict);
}

@end

截图:

31-20.gif

---

访问图片

#import "ViewController.h"
#import "YYHttpTool.h"// 网络请求工具类，基于AFN的封装
@interface ViewController ()

@end

@implementation ViewController

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self Picture];
}
//发送访问图片的请求
-(void)Picture
{
    //1.创建会话管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    
    //修改数据的解析方式
    //3种解析方式:JSON & XML &http(不做任何处理)
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];//用XML解析数据
    
    //2.发请求
    [manager GET:@"http://120.25.226.186:32812/resources/images/minion_02.png" parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        
        NSLog(@"成功--%@",[responseObject class]);
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"失败--%@",error);
    }];
}

@end

打印结果

2016-08-14 18:27:23.398 AFN之访问图片 [15180:1110061] 成功--_NSInlineData

---

访问网页

#import "ViewController.h"
#import "YYHttpTool.h"// 网络请求工具类，基于AFN的封装
@interface ViewController ()

@end

@implementation ViewController

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self Website];
}

//(发送访问网页的请求)
-(void)Website
{
    //1.创建会话管理者
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    
    //内容类型为text/html
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
    
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    
    //2.发请求(发送登录网页的请求)
    [manager GET:@"http://www.baidu.com" parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        
        //内部已经把JOSN数据转换层OC对象(字典)
        
        NSLog(@"成功--%@",[[NSString alloc]initWithData:responseObject encoding:NSUTF8StringEncoding]);//把二进制数据responseObject转换成字符串NSString
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"失败--%@",error);
    }];
}

@end

截图:

31-21.gif

---

网络状态

#import "ViewController.h"
#import "AFNetworking.h"
@interface ViewController ()

@end

@implementation ViewController

-(void)viewDidLoad
{
    [super viewDidLoad];
    [self NetworkStatus];
}
-(void)NetworkStatus{
    //1.通过网络监测管理者监听状态的改变
    [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        
        /*
         AFNetworkReachabilityStatusUnknown          = -1,  未知
         AFNetworkReachabilityStatusNotReachable     = 0,   没有网络
         AFNetworkReachabilityStatusReachableViaWWAN = 1,   3G|4G
         AFNetworkReachabilityStatusReachableViaWiFi = 2,   WIFI
         */
        switch (status) {
            case AFNetworkReachabilityStatusReachableViaWiFi:
                NSLog(@"WIFI");
                break;
            case AFNetworkReachabilityStatusReachableViaWWAN:
                NSLog(@"3G&4G");
                break;
            case AFNetworkReachabilityStatusNotReachable:
                NSLog(@"没有网络");
                break;
            case AFNetworkReachabilityStatusUnknown:
                NSLog(@"未知");
                break;
            default:
                break;
        }
        
    }];
    
    //2.开始监听
    [[AFNetworkReachabilityManager sharedManager] startMonitoring];
}

@end

打印结果