// ViewController.m // 02-了解-网页开发 #import "ViewController.h" //#import <JavaScriptCore/JavaScriptCore.h> @interface ViewController () <UIWebViewDelegate> @property (weak, nonatomic) IBOutlet UIWebView *webView; @end @implementation ViewController /** iOS : Xcode Java : eclipseMyEclipse Android : eclipseMyEclipseAndroid Studio 网页（前端）：Dreamweaver（美工）、Sublime（前端）、WebStorm（前端） iOS App == Native + HTML5 完整的网页组成： HTML：内容（文字、图片） CSS：美化、样式 JS：动态效果、事件处理、跟用户进行交互 */ - (void)viewDidLoad { [super viewDidLoad]; [self.webView loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"index" withExtension:@"html"]]]; } - (void)call { NSLog(@"%s", __func__); // [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://10086"]]; } - (void)sendMessage { NSLog(@"%s", __func__); } - (void)openCamera { NSLog(@"%s", __func__); } #pragma mark - <UIWebViewDelegate> - (void)webViewDidFinishLoad:(UIWebView *)webView { // [webView stringByEvaluatingJavaScriptFromString:@"alert(100);"]; // 利用JS获得当前网页的标题 // self.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title;"]; // NSString *result = [webView stringByEvaluatingJavaScriptFromString:@"login();"]; // NSLog(@"%@", result); } /** * 通过这个方法完成JS调用OC * JS和OC交互的第三方框架：WebViewJavaScriptBridge */ - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { NSString *url = request.URL.absoluteString; NSString *scheme = @"xmg://"; if ([url hasPrefix:scheme]) { NSString *methodName = [url substringFromIndex:scheme.length]; [self performSelector:NSSelectorFromString(methodName) withObject:nil]; return NO; } NSLog(@"想加载其他请求，不是想调用OC的方法"); return YES; } @end
03-了解-网页开发（JS-OC）
// // ViewController.m // 02-了解-网页开发 #import "ViewController.h" // 去除Xcode编译警告 //#pragma clang diagnostic push #pragma clang diagnostic ignored "-Warc-performSelector-leaks" //#pragma clang diagnostic pop //#import <JavaScriptCore/JavaScriptCore.h> @interface ViewController () <UIWebViewDelegate> @property (weak, nonatomic) IBOutlet UIWebView *webView; @end @implementation ViewController /** iOS : Xcode Java : eclipseMyEclipse Android : eclipseMyEclipseAndroid Studio 网页（前端）：Dreamweaver（美工）、Sublime（前端）、WebStorm（前端） iOS App == Native + HTML5 完整的网页组成： HTML：内容（文字、图片） CSS：美化、样式 JS：动态效果、事件处理、跟用户进行交互 */ - (void)viewDidLoad { [super viewDidLoad]; [self.webView loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"index" withExtension:@"html"]]]; } - (void)call:(NSString *)number { NSLog(@"%s %@", __func__, number); } - (void)sendMessage:(NSString *)number number2:(NSString *)number2 { NSLog(@"%s %@ %@", __func__, number, number2); } - (void)openCamera { NSLog(@"%s", __func__); } #pragma mark - <UIWebViewDelegate> /** * 通过这个方法完成JS调用OC * JS和OC交互的第三方框架：WebViewJavaScriptBridge */ - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { // url == xmg://sendMessage_?200 NSString *url = request.URL.absoluteString; NSString *scheme = @"xmg://"; if ([url hasPrefix:scheme]) { // 获得协议后面的路径 path == sendMessage_number2_?200&300 NSString *path = [url substringFromIndex:scheme.length]; // 利用?切割路径 NSArray *subpaths = [path componentsSeparatedByString:@"?"]; // 方法名 methodName == sendMessage:number2: NSString *methodName = [[subpaths firstObject] stringByReplacingOccurrencesOfString:@"_" withString:@":"]; // 参数 200&300 NSString *param = [subpaths lastObject]; NSArray *subparams = nil; if (subpaths.count == 2 || [param containsString:@"&"]) { subparams = [param componentsSeparatedByString:@"&"]; } // 取出前面的2个参数 NSString *firstParam = [subparams firstObject]; NSString *secondParam = subparams.count <= 1 ? nil : [subparams lastObject]; [self performSelector:NSSelectorFromString(methodName) withObject:firstParam withObject:secondParam]; return NO; } NSLog(@"想加载其他请求，不是想调用OC的方法"); return YES; } @end
04-了解-网页开发（JS-OC）
// // ViewController.m // 02-了解-网页开发 #import "ViewController.h" #import "NSObject+Extension.h" // 去除Xcode编译警告 //#pragma clang diagnostic push #pragma clang diagnostic ignored "-Warc-performSelector-leaks" //#pragma clang diagnostic pop //#import <JavaScriptCore/JavaScriptCore.h> @interface ViewController () <UIWebViewDelegate> @property (weak, nonatomic) IBOutlet UIWebView *webView; @end @implementation ViewController /** iOS : Xcode Java : eclipseMyEclipse Android : eclipseMyEclipseAndroid Studio 网页（前端）：Dreamweaver（美工）、Sublime（前端）、WebStorm（前端） iOS App == Native + HTML5 完整的网页组成： HTML：内容（文字、图片） CSS：美化、样式 JS：动态效果、事件处理、跟用户进行交互 */ // 程序崩溃分析报告 - (void)viewDidLoad { [super viewDidLoad]; // @try { // @[][0]; // // NSLog(@"--------2222"); // } // @catch (NSException *exception) { // NSLog(@"-----代码有异常----%@", exception); // } // @finally { // NSLog(@"---------33333-"); // } NSLog(@"-------44444"); // [self.webView loadRequest:[NSURLRequest requestWithURL:[[NSBundle mainBundle] URLForResource:@"index" withExtension:@"html"]]]; // [self performSelector:@selector(abc) withObjects:nil]; // [self performSelector:@selector(abc)]; NSString *result = [self performSelector:@selector(openCamera) withObjects:@[@1, @"432"]]; NSLog(@"%@", result); // NSLog(@"%@", [self openCamera]); [self performSelector:@selector(call:) withObjects:nil]; // [self call:@"10086"]; // // [self performSelector:@selector(sendMessage:number2:number3:) withObjects:@[ // [NSNull null], // [NSNull null], // @"10010" // ]]; // [self sendMessage:nil number2:nil number3:@"10010"]; } - (void)call:(NSString *)number { NSLog(@"%s %@", __func__, number); } - (void)sendMessage:(NSString *)number number2:(NSString *)number2 number3:(NSString *)number3 { NSLog(@"%s %@ %@ %@", __func__, number, number2, number3); } - (NSString *)openCamera { NSLog(@"%s", __func__); return @"相机"; } #pragma mark - <UIWebViewDelegate> /** * 通过这个方法完成JS调用OC * JS和OC交互的第三方框架：WebViewJavaScriptBridge */ - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType { // url == xmg://sendMessage_?200 NSString *url = request.URL.absoluteString; NSString *scheme = @"xmg://"; if ([url hasPrefix:scheme]) { // 获得协议后面的路径 path == sendMessage_number2_?200&300 NSString *path = [url substringFromIndex:scheme.length]; // 利用?切割路径 NSArray *subpaths = [path componentsSeparatedByString:@"?"]; // 方法名 methodName == sendMessage:number2: NSString *methodName = [[subpaths firstObject] stringByReplacingOccurrencesOfString:@"_" withString:@":"]; // 参数 200&300 NSArray *params = nil; if (subpaths.count == 2) { params = [[subpaths lastObject] componentsSeparatedByString:@"&"]; } // 调用 [self performSelector:NSSelectorFromString(methodName) withObjects:params]; return NO; } NSLog(@"想加载其他请求，不是想调用OC的方法"); return YES; } @end
// NSObject+Extension.h // 02-了解-网页开发 #import <Foundation/Foundation.h> @interface NSObject (Extension) - (id)performSelector:(SEL)selector withObjects:(NSArray *)objects; @end
// NSObject+Extension.m // 02-了解-网页开发 #import "NSObject+Extension.h" @implementation NSObject (Extension) - (id)performSelector:(SEL)selector withObjects:(NSArray *)objects { // 方法签名(方法的描述) NSMethodSignature *signature = [[self class] instanceMethodSignatureForSelector:selector]; if (signature == nil) { // @throw [NSException exceptionWithName:@"牛逼的错误" reason:@"方法找不到" userInfo:nil]; [NSException raise:@"牛逼的错误" format:@"%@方法找不到", NSStringFromSelector(selector)]; } // NSInvocation : 利用一个NSInvocation对象包装一次方法调用（方法调用者、方法名、方法参数、方法返回值） NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature]; invocation.target = self; invocation.selector = selector; // 设置参数 NSInteger paramsCount = signature.numberOfArguments - 2; // 除self、_cmd以外的参数个数 paramsCount = MIN(paramsCount, objects.count); for (NSInteger i = 0; i < paramsCount; i++) { id object = objects[i]; if ([object isKindOfClass:[NSNull class]]) continue; [invocation setArgument:&object atIndex:i + 2]; } // 调用方法 [invocation invoke]; // 获取返回值 id returnValue = nil; if (signature.methodReturnLength) { // 有返回值类型，才去获得返回值 [invocation getReturnValue:&returnValue]; } return returnValue; } @end