ANNetworking的基本使用

get请求

• AFHTTPSessionManager内部包装了NSURLSession

    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    NSDictionary *params = @{
                             @"username" : @"520it",
                             @"pwd" : @"520it"
                             };
    [mgr GET:@"http://120.25.226.186:32812/login" parameters:params success:^(NSURLSessionDataTask *task, id responseObject) {
        NSLog(@"%@",responseObject);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"%@",error);
    }];

post请求

• AFHTTPSessionManager内部包装了NSURLSession

    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    NSDictionary *params = @{
                             @"username" : @"520it",
                             @"pwd" : @"520it"
                             };
    [mgr POST:@"http://120.25.226.186:32812/login" parameters:params success:^(NSURLSessionDataTask *task, id responseObject) {
        NSLog(@"%@",responseObject);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"%@",error);
    }];

文件上传

    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    [mgr POST:@"http://120.25.226.186:32812/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

    // 在这个block中设置需要上传的文件
    // 这个方法内部会自动生成上传的文件的fileName、mimeType
    [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"/Users/ahuan/Desktop/placeholder.png"] name:@"file" error:nil]; 

    // [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"/Users/ahuan/Desktop/placeholder.png"]  name:@"file" fileName:@"text.png" mimeType:@"image/png" error:nil];

    // [formData appendPartWithFileData:[NSData dataWithContentsOfFile:@"/Users/ahuan/Desktop/placeholder.png"] name:@"file" fileName:@"text2.png" mimeType:@"image/png"];

    // 注意这个方法看着跟前面三个很像，但是调用这个方法没法上传
    // [formData appendPartWithFormData:[NSData dataWithContentsOfFile:@"/Users/ahuan/Desktop/placeholder.png"] name:@"file"];

    } success:^(NSURLSessionDataTask *task, id responseObject) {
        NSLog(@"%@", responseObject);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        nil;
    }];

监控网络环境

ANNetworking

    // 开始网络监控
    AFNetworkReachabilityManager *mgr = [AFNetworkReachabilityManager sharedManager];

    [mgr setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        NSLog(@"----当前的网络状态----%zd", status);
    }];

    [mgr startMonitoring];
    // 拿到当前网络状态
    mgr.networkReachabilityStatus;

苹果自带的Reachability的框架

• 下载地址：https://developer.apple.com/library/ios/samplecode/Reachability/Reachability.zip

#import "ViewController.h"
#import "Reachability.h"
#import <AFNetworking.h>


@interface ViewController ()
/** 监控网络 */
@property (nonatomic, strong) Reachability *reachability;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // 监听通知
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(getNetworkStatus) name:kReachabilityChangedNotification object:nil];

    // 开始监控网络
    self.reachability = [Reachability reachabilityForInternetConnection];
    [self.reachability startNotifier];
}
- (void)dealloc{
    [[NSNotificationCenter defaultCenter] removeObserver:self];

    [self.reachability stopNotifier];
    self.reachability = nil;
}

- (void)getNetworkStatus{
    if ([Reachability reachabilityForLocalWiFi].currentReachabilityStatus != NotReachable) {
        NSLog(@"是wifi");
    } else if ([Reachability reachabilityForInternetConnection].currentReachabilityStatus != NotReachable) {
        NSLog(@"是手机自带网络");
    } else {
        NSLog(@"网络有问题");
    }
}
@end

细节

AFHTTPSessionManager的responseSerializer属性

• 通过设置responseSerializer，可以设置把 服务器返回的数据解析成什么类型
  
  • [AFHTTPResponseSerializer serializer];
    
    • 直接使用“服务器本来返回的数据”，不做任何解析
  • [AFJSONResponseSerializer serializer];
    
    • 解析服务器返回的JSON数据（如果不设置，默认返回这个格式）
  • [AFXMLParserResponseSerializer serializer];
    
    • 解析服务器返回的XML数据

    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    mgr.responseSerializer = [AFXMLParserResponseSerializer serializer];

    NSDictionary *params = @{
                             @"username" : @"520it",
                             @"pwd" : @"520it",
                             @"type" : @"XML"
                             };
    [mgr GET:@"http://120.25.226.186:32812/login" parameters:params success:^(NSURLSessionDataTask *task, NSXMLParser *parser) {
        parser.delegate = self;
        [parser parse];
        NSLog(@"-----请求成功%@", parser);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"-----请求成功%@", error);
    }];

    AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager];
    // 直接使用“服务器本来返回的数据”，不做任何解析
    mgr.responseSerializer = [AFHTTPResponseSerializer serializer];


    [mgr GET:@"http://120.25.226.186:32812/resources/images/minion_02.png" parameters:nil success:^(NSURLSessionDataTask *task, NSData *responseObject) { NSLog(@"请求成功---%zd", responseObject.length);
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"请求失败---%@", error); }];