zuoyebang/tongxin/VC/More/Set/WebViewController.m

//
//  WebViewController.m
//  watch
//
//  Created by xTT on 2017/9/3.
//  Copyright © 2017年 xTT. All rights reserved.
//
#import "WebViewController.h"
#import <Photos/Photos.h>

@interface WebViewController()<WKNavigationDelegate>



/// 右侧的选项 容器View
@property (nonatomic, strong) UIView *webOptionView;
/// 进度条
@property (nonatomic, strong) UIProgressView* progressView;
/// 当前链接
@property (nonatomic, strong) NSString* currentURLString;

/// 第一次加载完成
@property (nonatomic, assign) BOOL isFristLoadFinish;
/**
 隐藏导航栏时有的返回按钮
 */
@property (nonatomic, strong) UIButton *backBtn;

@end
@implementation WebViewController

- (WKWebView *)myWebView{
    if (!_myWebView) {
        _myWebView = [[WKWebView alloc] init];
        [self.view addSubview:_myWebView];
        [_myWebView mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.right.equalTo(self.view);
            make.top.equalTo(self.view).offset(iPhoneX_NavHeight);
            make.bottom.equalTo(self.view.mas_bottom);
        }];
    }
    return _myWebView;
}

-(UIProgressView *)progressView{
    if(!_progressView){
        _progressView = [[UIProgressView alloc] init];
        _progressView.progressTintColor = mainColor;
        [self.view addSubview:_progressView];
        [_progressView mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.mas_offset(0);
            make.left.mas_offset(0);
            make.right.mas_offset(0);
            make.height.mas_offset(3);
        }];
    }
    return _progressView;
}


-(BOOL)prefersStatusBarHidden{
    if(self.isHiddenNavigationBar){
        return YES;
    }
    return NO;
}
-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    if(self.isHiddenNavigationBar){
        [self.navigationController.navigationBar setHidden:YES];
    }
}
//-(BOOL)prefersStatusBarHidden{
//    if(self.isHiddenNavigationBar){
//        return YES;
//    }else{
//        return NO;
//    }
//}

//进入显示页面
-(void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:animated];
    if (self.isShowMoreOperations){
        // 禁用返回手势
        if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
            self.navigationController.interactivePopGestureRecognizer.enabled = NO;
        }
    }
}
//退出页面
-(void)viewDidDisappear:(BOOL)animated{
    [super viewDidDisappear:animated];
    if(self.isHiddenNavigationBar){
        [[UIApplication sharedApplication] setStatusBarHidden:NO];
        [self.navigationController.navigationBar setHidden:NO];
    }
    
    //移除观察者
    @try {
        [_myWebView removeObserver:self forKeyPath:NSStringFromSelector(@selector(estimatedProgress))];
    } @catch (NSException *exception) {
        NSLog(@"RemoveObserver estimatedProgress ERROR!");
    }
    
    // [_webView removeObserver:self forKeyPath:NSStringFromSelector(@selector(title))];
    if (self.isShowMoreOperations){
        // 开启返回手势
        if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
            self.navigationController.interactivePopGestureRecognizer.enabled = YES;
        }
    }
}

 

   //kvo 监听进度 必须实现此方法
-(void)observeValueForKeyPath:(NSString *)keyPath
                     ofObject:(id)object
                       change:(NSDictionary<NSKeyValueChangeKey,id> *)change
                      context:(void *)context{
    if ([keyPath isEqualToString:NSStringFromSelector(@selector(estimatedProgress))]
        && object == _myWebView) {
       NSLog(@"网页加载进度 = %f",_myWebView.estimatedProgress);
        self.progressView.progress = _myWebView.estimatedProgress;
        if (_myWebView.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;
                self.progressView.hidden = YES;
            });
        }else{
            self.progressView.hidden = NO;
        }
    }
    else if([keyPath isEqualToString:@"title"]
             && object == _myWebView){
        if (self.isShowMoreOperations) {
            
        }
    }
    else{
        [super observeValueForKeyPath:keyPath
                             ofObject:object
                               change:change
                              context:context];
    }
}
    
- (void)viewDidLoad{
    
    [super viewDidLoad];
    
    if(self.isShowMoreOperations){
        
        UIBarButtonItem *webOperationBtn = [[UIBarButtonItem alloc] initWithImage: [UIImage imageNamed:@"icon_operation"] style:UIBarButtonItemStylePlain target:self action:@selector(webOperationAction:)];
        
        
        UIBarButtonItem *closeBtn = [[UIBarButtonItem alloc] initWithImage: [UIImage imageNamed:@"icon_close"] style:UIBarButtonItemStylePlain target:self action:@selector(closeWebAction:)];
        //右键复制连接或者在浏览器打开
        self.navigationItem.rightBarButtonItems = @[webOperationBtn,closeBtn];
    }
    
    
    //添加监测网页加载进度的观察者
    [self.myWebView addObserver:self
                    forKeyPath:@"estimatedProgress"
                       options:0
                       context:nil];
    
    //添加监测网页标题title的观察者
    [self.myWebView addObserver:self
                    forKeyPath:@"title"
                       options:NSKeyValueObservingOptionNew
                       context:nil];
    
    if(self.content){
        [self.myWebView loadHTMLString:self.content baseURL:nil];
    }else{
        [self.myWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:self.url]]];
    }
    self.myWebView.navigationDelegate = self;
    if(self.isHiddenNavigationBar){
        //创建返回按钮
//        _backBtn = [UIButton buttonWithType:UIButtonTypeSystem];
//        _backBtn.frame = CGRectMake(14, 40, 30, 30);
//        [_backBtn setBackgroundImage:[UIImage imageNamed:@"icon_return_black"] forState:0];
//        [_backBtn addTarget:self action:@selector(goBack:) forControlEvents:UIControlEventTouchUpInside];
//        [self.view addSubview:_backBtn];
    }
    
    
    
}

- (void)openScheme:(NSString *)scheme {
    UIApplication *application = [UIApplication sharedApplication];
    NSURL *URL = [NSURL URLWithString:scheme];
    
    //iOS 10 以后
    if ([application respondsToSelector:@selector(openURL:options:completionHandler:)]) {
        //1 如果这个要打开的URL有效，并且在应用中配置它布尔值为true（YES）时才可以打开，否则打不开
        //        NSDictionary *options = @{UIApplicationOpenURLOptionUniversalLinksOnly : @YES};
        //2 此时与openURL功能相似
        NSDictionary *options  =@{};
        [application openURL:URL options:options
           completionHandler:^(BOOL success) {
               NSLog(@"Open %@: %d",scheme,success);
           }];
    } else {
        if ([application canOpenURL:URL]) {
            BOOL success = [application openURL:URL];
            NSLog(@"Open %@: %d",scheme,success);
        }
        
    }
}

-(void)goBack:(id)sender{
    if(self.isShowMoreOperations){
        if (self.myWebView.canGoBack) {
            [self.myWebView goBack];
        }else{
            [self.navigationController popViewControllerAnimated:YES];
        }
    }else{
        [super goBack:sender];
    }
    
}
- (void)closeWebAction:(id)sender{
    [self.navigationController popViewControllerAnimated:YES];
}
- (void)webOperationAction:(UIBarButtonItem*)sender{
    if(self.isFristLoadFinish == NO){
        return;
    }
    //如果还没加载完成,不能打开
    if(!_webOptionView){
        CGFloat aWidth = 180;
        _webOptionView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, ScreenWidth, ScreenHeight)];
        _webOptionView.backgroundColor = RGBA(2, 1, 6, 0.4);
        _webOptionView.userInteractionEnabled = YES;
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hiddenWebOptionAction:)];
        [_webOptionView addGestureRecognizer:tap];
        UIWindow *win = [UIApplication sharedApplication].keyWindow;
        [win addSubview:_webOptionView];
        UIView *contentView = [[UIView alloc] initWithFrame:CGRectMake(ScreenWidth-aWidth-25, getRectNavAndStatusHight - 20, aWidth, 90)];
        contentView.layer.cornerRadius = 5;
        contentView.layer.masksToBounds = YES;
        
        contentView.backgroundColor = [UIColor whiteColor];
        [_webOptionView addSubview:contentView];
        UIButton *copBtn = [UIButton buttonWithType:UIButtonTypeCustom];
        [copBtn setImage:[UIImage imageNamed:@"icon_copylink"] forState:0];
        [copBtn setTitle:@"复制连接" forState:0];
        copBtn.frame = CGRectMake(0, 0, aWidth, 45);
        copBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
        [copBtn setTitleColor:RGB(52, 52, 52) forState:0];
        copBtn.titleLabel.font = DefineFontSize;
        copBtn.imageEdgeInsets = UIEdgeInsetsMake(0, 15, 0, 0);
        copBtn.titleEdgeInsets =UIEdgeInsetsMake(0, 15+15, 0, 0);
        [contentView addSubview:copBtn];
        [copBtn addTarget:self action:@selector(copyLinkAction:) forControlEvents:UIControlEventTouchUpInside];
        
        UIButton *openWebBtn = [UIButton buttonWithType:UIButtonTypeCustom];
        [openWebBtn setImage:[UIImage imageNamed:@"icon_browser_open"] forState:0];
        [openWebBtn setTitleColor:RGB(52, 52, 52) forState:0];
        [openWebBtn setTitle:@"在浏览器中打开" forState:0];
        openWebBtn.titleLabel.font = DefineFontSize;
        openWebBtn.imageEdgeInsets = UIEdgeInsetsMake(0, 15, 0, 0);
        openWebBtn.titleEdgeInsets =UIEdgeInsetsMake(0, 15+15, 0, 0);
        openWebBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
        openWebBtn.frame = CGRectMake(0, 45, aWidth, 45);
        [contentView addSubview:openWebBtn];
        [openWebBtn addTarget:self action:@selector(openLinkWithSystemWeb:) forControlEvents:UIControlEventTouchUpInside];
        
        
    }
    _webOptionView.hidden = !_webOptionView.hidden;
    
}

- (void)hiddenWebOptionAction:(id)sender{
    if(_webOptionView){
        _webOptionView.hidden = YES;
    }
}

/// 复制连接
- (void)copyLinkAction:(UIButton*)sender{
    UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
    if(self.currentURLString.length > 0){
        pasteboard.string = self.currentURLString;
        xLog(@"复制连接到剪贴板了...:%@",self.currentURLString);
        [UICommon MessageSuccessText:@"链接已经成功复制到剪贴板" isImg:YES];
        [self hiddenWebOptionAction:nil];
        

    }
    
    
}
/// 打开浏览器
- (void)openLinkWithSystemWeb:(UIButton*)sender{
    
    if(_currentURLString.length > 0){
        
        // IOS11 以下的
        if([[[UIDevice currentDevice] systemVersion] doubleValue] < 10.0){
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:_currentURLString]];
        }else{
            // iOS 11 以上
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:_currentURLString] options:@{} completionHandler:^(BOOL success) {
                xLog(@"success: %d",success);
            }];
        }
    }
    [self hiddenWebOptionAction:nil];
}
    // 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];
    self.currentURLString = webView.URL.absoluteURL.absoluteString;
    self.isFristLoadFinish = YES;
    xLog(@"页面加载完成时的连接：%@",self.currentURLString);
}
    //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;
    
    xLog(@"发送跳转请求：%@",urlStr);
    NSString * toJumpURL = @"";
    if ([urlStr containsString:@"apps.apple.com"] || [urlStr containsString:@"itunes.apple.com"]) {
        toJumpURL = [urlStr stringByReplacingOccurrencesOfString:@"https:" withString:@"itms-apps:"];
        
    }else if (![urlStr hasPrefix:@"https://"] && ![urlStr hasPrefix:@"http://"]){
        // 不含 https:// 和 http:// 的都跳转
        
        toJumpURL = urlStr;
    }
    if(toJumpURL.length > 0){
        if([toJumpURL containsString:@"://"]){
            xLog(@"只有包含 : < :// >  的才控制跳转浏览器: %@", urlStr);
            // IOS11 以下的
            if([[[UIDevice currentDevice] systemVersion] doubleValue] < 11.0){
                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:toJumpURL]];
            }else{
                // iOS 11 以上
                [[UIApplication sharedApplication] openURL:[NSURL URLWithString:toJumpURL] options:@{} completionHandler:^(BOOL success) {
                    xLog(@"success: %d",success);
                }];
            }
        }
    }
    
    
    
    //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{
}

@end