shq
直接贴代码
//
// ViewController.m
#import "ViewController.h"
#import
//竖屏幕宽高
#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
#define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)
//设备型号
#define iPhone4 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhone6 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(750, 1334), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhone6Plus ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2208), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhone6PlusScale ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2001), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)
//导航栏
#define StatusBarHeight (iPhoneX ? 44.f : 20.f)
#define StatusBarAndNavigationBarHeight (iPhoneX ? 88.f : 64.f)
#define TabbarHeight (iPhoneX ? (49.f + 34.f) : (49.f))
#define BottomSafeAreaHeight (iPhoneX ? (34.f) : (0.f))
// WKWebView 内存不释放的问题解决
@interface WeakWebViewScriptMessageDelegate : NSObject
//WKScriptMessageHandler 这个协议类专门用来处理JavaScript调用原生OC的方法
@property (nonatomic, weak) id scriptDelegate;
- (instancetype)initWithDelegate:(id)scriptDelegate;
@end
@implementation WeakWebViewScriptMessageDelegate
- (instancetype)initWithDelegate:(id)scriptDelegate {
self = [super init];
if (self) {
_scriptDelegate = scriptDelegate;
}
return self;
}
#pragma mark - WKScriptMessageHandler
//遵循WKScriptMessageHandler协议，必须实现如下方法，然后把方法向外传递
//通过接收JS传出消息的name进行捕捉的回调方法
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {
if ([self.scriptDelegate respondsToSelector:@selector(userContentController:didReceiveScriptMessage:)]) {
[self.scriptDelegate userContentController:userContentController didReceiveScriptMessage:message];
}
}
@end
@interface ViewController ()
@property (nonatomic, strong) WKWebView * webView;
//网页加载进度视图
@property (nonatomic, strong) UIProgressView * progressView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self setupNavigationItem];
[self.view addSubview:self.webView];
[self.view addSubview:self.progressView];
//添加监测网页加载进度的观察者
[self.webView addObserver:self
forKeyPath:NSStringFromSelector(@selector(estimatedProgress))
options:0
context:nil];
[self.webView addObserver:self
forKeyPath:@"title"
options:NSKeyValueObservingOptionNew
context:nil];
}
//kvo 监听进度 必须实现此方法
-(void)observeValueForKeyPath:(NSString *)keyPath
ofObject:(id)object
change:(NSDictionary *)change
context:(void *)context{
if ([keyPath isEqualToString:NSStringFromSelector(@selector(estimatedProgress))]
&& object == _webView) {
NSLog(@"网页加载进度 = %f",_webView.estimatedProgress);
self.progressView.progress = _webView.estimatedProgress;
if (_webView.estimatedProgress >= 1.0f) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
self.progressView.progress = 0;
});
}
}else if([keyPath isEqualToString:@"title"]
&& object == _webView){
self.navigationItem.title = _webView.title;
}else{
[super observeValueForKeyPath:keyPath
ofObject:object
change:change
context:context];
}
}
- (void)setupNavigationItem{
// 后退按钮
UIButton * goBackButton = [UIButton buttonWithType:UIButtonTypeCustom];
[goBackButton setImage:[UIImage imageNamed:@"backbutton"] forState:UIControlStateNormal];
[goBackButton addTarget:self action:@selector(goBackAction:) forControlEvents:UIControlEventTouchUpInside];
goBackButton.frame = CGRectMake(0, 0, 30, StatusBarAndNavigationBarHeight);
UIBarButtonItem * goBackButtonItem = [[UIBarButtonItem alloc] initWithCustomView:goBackButton];
UIBarButtonItem * jstoOc = [[UIBarButtonItem alloc] initWithTitle:@"首页" style:UIBarButtonItemStyleDone target:self action:@selector(localHtmlClicked)];
self.navigationItem.leftBarButtonItems = @[goBackButtonItem,jstoOc];
// 刷新按钮
UIButton * refreshButton = [UIButton buttonWithType:UIButtonTypeCustom];
[refreshButton setImage:[UIImage imageNamed:@"webRefreshButton"] forState:UIControlStateNormal];
[refreshButton addTarget:self action:@selector(refreshAction:) forControlEvents:UIControlEventTouchUpInside];
refreshButton.frame = CGRectMake(0, 0, 30, StatusBarAndNavigationBarHeight);
UIBarButtonItem * refreshButtonItem = [[UIBarButtonItem alloc] initWithCustomView:refreshButton];
UIBarButtonItem * ocToJs = [[UIBarButtonItem alloc] initWithTitle:@"OC调用JS" style:UIBarButtonItemStyleDone target:self action:@selector(ocToJs)];
self.navigationItem.rightBarButtonItems = @[refreshButtonItem, ocToJs];
}
#pragma mark -
#pragma mark -- Event Handle
- (void)goBackAction:(id)sender{
[_webView goBack];
}
- (void)localHtmlClicked{
NSString *path = [[NSBundle mainBundle] pathForResource:@"JStoOC.html" ofType:nil];
NSString *htmlString = [[NSString alloc]initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
// [_webView loadHTMLString:htmlString baseURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] bundlePath]]];
//测试去掉网页上方 不用的部分
[_webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://m.toutiao.com/profile/52672332919/#mid=52672332919"]]];
}
- (void)refreshAction:(id)sender{
[_webView reload];
}
- (void)ocToJs{
//OC调用JS changeColor()是JS方法名，completionHandler是异步回调block
NSString *jsString = [NSString stringWithFormat:@"changeColor('%@')", @"Js参数"];
[_webView evaluateJavaScript:jsString completionHandler:^(id _Nullable data, NSError * _Nullable error) {
NSLog(@"改变HTML的背景色");
}];
//改变字体大小 调用原生JS方法
NSString *jsFont = [NSString stringWithFormat:@"document.getElementsByTagName('body')[0].style.webkitTextSizeAdjust= '%d%%'", arc4random()%99 + 100];
[_webView evaluateJavaScript:jsFont completionHandler:nil];
}
#pragma mark -
#pragma mark -- Getter
- (UIProgressView *)progressView
{
if (!_progressView){
_progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(0, StatusBarAndNavigationBarHeight + 1, self.view.frame.size.width, 2)];
_progressView.tintColor = [UIColor blueColor];
_progressView.trackTintColor = [UIColor clearColor];
}
return _progressView;
}
- (WKWebView *)webView{
if(_webView == nil){
//创建网页配置对象
WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];
// 创建设置对象
WKPreferences *preference = [[WKPreferences alloc]init];
//最小字体大小 当将javaScriptEnabled属性设置为NO时，可以看到明显的效果
preference.minimumFontSize = 0;
//设置是否支持javaScript 默认是支持的
preference.javaScriptEnabled = YES;
// 在iOS上默认为NO，表示是否允许不经过用户交互由javaScript自动打开窗口
preference.javaScriptCanOpenWindowsAutomatically = YES;
config.preferences = preference;
// 是使用h5的视频播放器在线播放, 还是使用原生播放器全屏播放
config.allowsInlineMediaPlayback = YES;
//设置视频是否需要用户手动播放 设置为NO则会允许自动播放
config.requiresUserActionForMediaPlayback = YES;
//设置是否允许画中画技术 在特定设备上有效
config.allowsPictureInPictureMediaPlayback = YES;
//设置请求的User-Agent信息中应用程序名称 iOS9后可用
config.applicationNameForUserAgent = @"ChinaDailyForiPad";
//自定义的WKScriptMessageHandler 是为了解决内存不释放的问题
WeakWebViewScriptMessageDelegate *weakScriptMessageDelegate = [[WeakWebViewScriptMessageDelegate alloc] initWithDelegate:self];
//这个类主要用来做native与JavaScript的交互管理
WKUserContentController * wkUController = [[WKUserContentController alloc] init];
//注册一个name为jsToOcNoPrams的js方法 设置处理接收JS方法的对象
[wkUController addScriptMessageHandler:weakScriptMessageDelegate name:@"jsToOcNoPrams"];
[wkUController addScriptMessageHandler:weakScriptMessageDelegate name:@"jsToOcWithPrams"];
config.userContentController = wkUController;
//以下代码适配文本大小
NSString *jSString = @"var meta = document.createElement('meta'); meta.setAttribute('name', 'viewport'); meta.setAttribute('content', 'width=device-width'); document.getElementsByTagName('head')[0].appendChild(meta);";
//用于进行JavaScript注入
WKUserScript *wkUScript = [[WKUserScript alloc] initWithSource:jSString injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];
[config.userContentController addUserScript:wkUScript];
_webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT) configuration:config];
// UI代理
_webView.UIDelegate = self;
// 导航代理
_webView.navigationDelegate = self;
// 是否允许手势左滑返回上一级, 类似导航控制的左滑返回
_webView.allowsBackForwardNavigationGestures = YES;
//可返回的页面列表, 存储已打开过的网页
WKBackForwardList * backForwardList = [_webView backForwardList];
// NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.chinadaily.com.cn"]];
// [request addValue:[self readCurrentCookieWithDomain:@"http://www.chinadaily.com.cn"] forHTTPHeaderField:@"Cookie"];
// [_webView loadRequest:request];
NSString *path = [[NSBundle mainBundle] pathForResource:@"JStoOC.html" ofType:nil];
NSString *htmlString = [[NSString alloc]initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
[_webView loadHTMLString:htmlString baseURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] bundlePath]]];
}
return _webView;
}
//解决第一次进入的cookie丢失问题
- (NSString *)readCurrentCookieWithDomain:(NSString *)domainStr{
NSHTTPCookieStorage*cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSMutableString * cookieString = [[NSMutableString alloc]init];
for (NSHTTPCookie*cookie in [cookieJar cookies]) {
[cookieString appendFormat:@"%@=%@;",cookie.name,cookie.value];
}
//删除最后一个“;”
if ([cookieString hasSuffix:@";"]) {
[cookieString deleteCharactersInRange:NSMakeRange(cookieString.length - 1, 1)];
}
return cookieString;
}
//解决 页面内跳转（a标签等）还是取不到cookie的问题
- (void)getCookie{
//取出cookie
NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
//js函数
NSString *JSFuncString =
@"function setCookie(name,value,expires)\
{\
var oDate=new Date();\
oDate.setDate(oDate.getDate()+expires);\
document.cookie=name+'='+value+';expires='+oDate+';path=/'\
}\
function getCookie(name)\
{\
var arr = document.cookie.match(new RegExp('(^| )'+name+'=([^;]*)(;|$)'));\
if(arr != null) return unescape(arr[2]); return null;\
}\
function delCookie(name)\
{\
var exp = new Date();\
exp.setTime(exp.getTime() - 1);\
var cval=getCookie(name);\
if(cval!=null) document.cookie= name + '='+cval+';expires='+exp.toGMTString();\
}";
//拼凑js字符串
NSMutableString *JSCookieString = JSFuncString.mutableCopy;
for (NSHTTPCookie *cookie in cookieStorage.cookies) {
NSString *excuteJSString = [NSString stringWithFormat:@"setCookie('%@', '%@', 1);", cookie.name, cookie.value];
[JSCookieString appendString:excuteJSString];
}
//执行js
[_webView evaluateJavaScript:JSCookieString completionHandler:nil];
}
#pragma mark -
#pragma mark -- WKScriptMessageHandler
//被自定义的WKScriptMessageHandler在回调方法里通过代理回调回来，绕了一圈就是为了解决内存不释放的问题
//通过接收JS传出消息的name进行捕捉的回调方法
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message{
NSLog(@"name:%@\\\\n body:%@\\\\n frameInfo:%@\\\\n",message.name,message.body,message.frameInfo);
//用message.body获得JS传出的参数体
NSDictionary * parameter = message.body;
//JS调用OC
if([message.name isEqualToString:@"jsToOcNoPrams"]){
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"js调用到了oc" message:@"不带参数" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}])];
[self presentViewController:alertController animated:YES completion:nil];
}else if([message.name isEqualToString:@"jsToOcWithPrams"]){
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"js调用到了oc" message:parameter[@"params"] preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
}])];
[self presentViewController:alertController animated:YES completion:nil];
}
}
#pragma mark -
#pragma mark -- WKNavigationDelegate
/*
WKNavigationDelegate主要处理一些跳转、加载处理操作，WKUIDelegate主要处理JS脚本，确认框，警告框等
*/
// 页面开始加载时调用
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation {
}
// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {
[self.progressView setProgress:0.0f animated:NO];
}
// 当内容开始返回时调用
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation {
}
// 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
[self getCookie];
NSString * urlstring =webView.URL.absoluteString;
if([urlstring isEqualToString:@"http://m.toutiao.com/profile/52672332919/#mid=52672332919"]){
//执行JS
[webView evaluateJavaScript:@"var openToDay=document.getElementsByTagName(\"div\")[0];openToDay.parentNode.removeChild(openToDay);document.getElementById(\"userhead\").style.display=\"none\";document.getElementById(\"profilepanel\").style.display=\"none\";document.getElementById(\"navlist\").childNodes[3].click();"
completionHandler:^(id _Nullable object, NSError * _Nullable error) {
NSLog(@" - %@ -- %@ --- ",error,object);
}];
}
}
//提交发生错误时调用
- (void)webView:(WKWebView *)webView didFailNavigation:(WKNavigation *)navigation withError:(NSError *)error {
[self.progressView setProgress:0.0f animated:NO];
}
// 接收到服务器跳转请求即服务重定向时之后调用
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation {
}
// 根据WebView对于即将跳转的HTTP请求头信息和相关信息来决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
NSString * urlStr = navigationAction.request.URL.absoluteString;
NSLog(@"发送跳转请求：%@",urlStr);
//自己定义的协议头
NSString *htmlHeadString = @"github://";
if([urlStr hasPrefix:htmlHeadString]){
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"通过截取URL调用OC" message:@"你想前往我的Github主页?" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}])];
[alertController addAction:([UIAlertAction actionWithTitle:@"打开" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSURL * url = [NSURL URLWithString:[urlStr stringByReplacingOccurrencesOfString:@"github://callName_?" withString:@""]];
[[UIApplication sharedApplication] openURL:url];
}])];
[self presentViewController:alertController animated:YES completion:nil];
decisionHandler(WKNavigationActionPolicyCancel);
}else{
decisionHandler(WKNavigationActionPolicyAllow);
}
}
// 根据客户端受到的服务器响应头以及response相关信息来决定是否可以跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler{
NSString * urlStr = navigationResponse.response.URL.absoluteString;
NSLog(@"当前跳转地址：%@",urlStr);
//允许跳转
decisionHandler(WKNavigationResponsePolicyAllow);
//不允许跳转
//decisionHandler(WKNavigationResponsePolicyCancel);
}
//需要响应身份验证时调用 同样在block中需要传入用户身份凭证
- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable credential))completionHandler{
//用户身份信息
NSURLCredential * newCred = [[NSURLCredential alloc] initWithUser:@"user123" password:@"123" persistence:NSURLCredentialPersistenceNone];
//为 challenge 的发送方提供 credential
[challenge.sender useCredential:newCred forAuthenticationChallenge:challenge];
completionHandler(NSURLSessionAuthChallengeUseCredential,newCred);
}
//进程被终止时调用
- (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView{
}
#pragma mark -
#pragma mark -- WKUIDelegate
/**
* web界面中有弹出警告框时调用
*
* @param webView 实现该代理的webview
* @param message 警告框中的内容
* @param completionHandler 警告框消失调用
*/
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler {
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"HTML的弹出框" message:message?:@"" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler();
}])];
[self presentViewController:alertController animated:YES completion:nil];
}
// 确认框
//JavaScript调用confirm方法后回调的方法 confirm是js中的确定框，需要在block中把用户选择的情况传递进去
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL))completionHandler{
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"" message:message?:@"" preferredStyle:UIAlertControllerStyleAlert];
[alertController addAction:([UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
completionHandler(NO);
}])];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler(YES);
}])];
[self presentViewController:alertController animated:YES completion:nil];
}
// 输入框
//JavaScript调用prompt方法后回调的方法 prompt是js中的输入框 需要在block中把用户输入的信息传入
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * _Nullable))completionHandler{
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:prompt message:@"" preferredStyle:UIAlertControllerStyleAlert];
[alertController addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
textField.text = defaultText;
}];
[alertController addAction:([UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler(alertController.textFields[0].text?:@"");
}])];
[self presentViewController:alertController animated:YES completion:nil];
}
// 页面是弹出窗口 _blank 处理
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {
if (!navigationAction.targetFrame.isMainFrame) {
[webView loadRequest:navigationAction.request];
}
return nil;
}
- (void)dealloc{
//移除注册的js方法
[[_webView configuration].userContentController removeScriptMessageHandlerForName:@"jsToOcNoPrams"];
[[_webView configuration].userContentController removeScriptMessageHandlerForName:@"jsToOcWithPrams"];
//移除观察者
[_webView removeObserver:self
forKeyPath:NSStringFromSelector(@selector(estimatedProgress))];
[_webView removeObserver:self
forKeyPath:NSStringFromSelector(@selector(title))];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
JS交互OC
Welcome To You
iOS
Github主页 ：通过截获URL调用OC