多线程+网络
2016-07-09 11:20
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多线程
NSThreadGCD
队列
并发队列
全局队列
自己创建
串行队列
自己创建
主队列
任务:block
函数
sync:同步函数
async:异步函数
单例模式
NSOperation
RunLoop
同一时间只能选择一个模式运行
常用模式
Default:默认
Tracking:拖拽UIScrollView
网络
HTTP请求
GET请求// URL NSString *urlStr = @"http://xxxxx.com"; urlStr = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSURL *url = [NSURL URLWithString:urlStr]; // 请求 NSURLRequest *request = [NSURLRequest requestWithURL:url];
POST请求
// URL NSString *urlStr = @"http://xxxxx.com"; urlStr = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSURL *url = [NSURL URLWithString:urlStr]; // 请求 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; request.HTTPMethod = @"POST"; request.HTTPBody = [@"username=123&pwd=123" dataUsingEncoding:NSUTF8StringEncoding];
数据解析
JSONNSJSONSerialization
XML
SAX: NSXMLParser
DOM: GDataXML
NSURLConnection(iOS9已经过期)
同步方法异步方法-block
异步方法-代理
NSURLSession
发送一般的GET\POST请求NSURLSessionDataTask *task = [[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { }]; // 开启任务 [task resume];
下载文件 - 不需要离线断点
NSURLSessionDownloadTask *task = [[NSURLSession sharedSession] downloadTaskWithRequest:request completionHandler:^(NSURL *location, NSURLResponse *response, NSError *error) { }]; // 开启任务 [task resume];
下载文件 - 需要离线断点
开启任务
// 创建session NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:self delegateQueue:[[NSOperationQueue alloc] init]]; // 设置请求头(告诉服务器第1024个字节开始下载) [request setValue:@"bytes=1024-" forHTTPHeaderField:@"Range"]; // 创建任务 NSURLSessionDataTask *task = [session dataTaskWithRequest:request]; // 开始任务 [task resume];
实现代理方法
- (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveResponse:(NSURLResponse *)response completionHandler:(void (^)(NSURLSessionResponseDisposition))completionHandler { // 打开NSOutputStream // 获得文件的总长度 // 存储文件的总长度 // 回调 completionHandler(NSURLSessionResponseAllow); } - (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveData:(NSData *)data { // 利用NSOutputStream写入数据 // 计算下载进度 } - (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(NSError *)error { // 关闭并且清空NSOutputStream // 清空任务task }
文件上传
设置请求头
拼接请求体
文件参数
其他参数(非文件参数)
NSURLSessionUploadTask
NSURLSessionUploadTask *task = [[NSURLSession sharedSession] uploadTaskWithRequest:request fromData:body completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { }]; [task resume];
AFN
GET// 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(@"请求成功---%@", responseObject); } failure:^(NSURLSessionDataTask *task, NSError *error) { NSLog(@"请求失败---%@", error); }];
POST
// 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(@"请求成功---%@", responseObject); } failure:^(NSURLSessionDataTask *task, NSError *error) { NSLog(@"请求失败---%@", error); }];
文件上传
AFHTTPSessionManager *mgr = [AFHTTPSessionManager manager]; [mgr POST:@"http://120.25.226.186:32812/upload" parameters:@{@"username" : @"123"} constructingBodyWithBlock:^(id<AFMultipartFormData> formData) { // 在这个block中设置需要上传的文件 // NSData *data = [NSData dataWithContentsOfFile:@"/Users/xiaomage/Desktop/placeholder.png"]; // [formData appendPartWithFileData:data name:@"file" fileName:@"test.png" mimeType:@"image/png"]; // [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"/Users/xiaomage/Desktop/placeholder.png"] name:@"file" fileName:@"xxx.png" mimeType:@"image/png" error:nil]; [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"/Users/xiaomage/Desktop/placeholder.png"] name:@"file" error:nil]; } success:^(NSURLSessionDataTask *task, id responseObject) { NSLog(@"-------%@", responseObject); } failure:^(NSURLSessionDataTask *task, NSError *error) { }];
UIWebView
加载请求NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:[[NSBundle mainBundle] pathForResource:@"index.html" ofType:nil]]]; self.webView.delegate = self; [self.webView loadRequest:request];
#pragma mark - <UIWebViewDelegate> - (void)webViewDidStartLoad:(UIWebView *)webView { } - (void)webViewDidFinishLoad:(UIWebView *)webView { } - (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error { } // 每次发送请求都会调用的方法 // JS和OC交互的第三方框架: WebViewJavaScriptBridge - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { }
JS和OC的互相调用
- (void)webViewDidFinishLoad:(UIWebView *)webView { // 利用JS获得当前网页的标题 NSString *title = [webView stringByEvaluatingJavaScriptFromString:@"document.title;"]; self.title = title; // 利用JS调用JS中方法 NSString *result = [webView stringByEvaluatingJavaScriptFromString:@"login();"]; NSLog(@"%@", result); }
利用NSInvocation实现performSelector无限参数
异常捕捉
NSException
崩溃统计(第三方)
友盟
Flurry
Crashlytics