xj-ios/XinjiangProject/XinjiangProject/Project/Base/XJBaseWebViewVC.m

//
//  XJBaseWebViewVC.m
//  ScarHousekeeper
//
//  Created by 张小万 on 2021/1/21.
//

#import "XJBaseWebViewVC.h"

@interface XJBaseWebViewVC ()<UINavigationControllerDelegate, UIImagePickerControllerDelegate>

@property (nonatomic, strong)NSURL *originalUrl;
@property (nonatomic, copy)NSString *videoUrl;
@property (nonatomic, copy)NSString *messageType;


@end

@implementation XJBaseWebViewVC


#pragma mark - LifeCycle
- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    self.isHidenNaviBar = false;
    [self addNavigationItemWithImageNames:@[@"whiteBack_icon"] isLeft:YES target:self action:@selector(backVC) tags:@[@""]];
    [self addSubviews];
    if (self.webTitle) {
        self.navigationItem.title = self.webTitle;
    }
}

- (void)backVC {
    
    [self.navigationController popViewControllerAnimated:YES];
}

- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    if (_wkWebView) {
        _wkWebView.navigationDelegate = self;
        _wkWebView.UIDelegate = self;
        _wkWebView.allowsBackForwardNavigationGestures = true;
        
    }
}


- (void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];
    _wkWebView.navigationDelegate = nil;
    _wkWebView.UIDelegate = nil;
    //清除cookies
    NSHTTPCookie *cookie;
    NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    for (cookie in [storage cookies]) {
        [storage deleteCookie:cookie];
    }
    [[NSURLCache sharedURLCache] removeAllCachedResponses];
    [self clearWebViewCache];
}

#pragma mark - Create UI
- (void)addSubviews{
    WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
    WKPreferences *preferences = [[WKPreferences alloc]init];
//    preferences.javaScriptEnabled = YES;
    preferences.javaScriptCanOpenWindowsAutomatically = YES;
    preferences.minimumFontSize = 10;
    configuration.preferences = preferences;
    [configuration.userContentController addScriptMessageHandler:self name:@"JSCallback"];
    [configuration.userContentController addScriptMessageHandler:self name:@"htmlBack"];
    //防止搜索框自动放大 注入js代码
    WKUserContentController *userController = [WKUserContentController new];
    NSString *jScript = @"var script = document.createElement('meta');script.name = 'viewport';script.content='width=device-width,user-scalable=no';document.getElementsByTagName('head')[0].appendChild(script);";

    WKUserScript *wkUScript = [[WKUserScript alloc] initWithSource:jScript injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];
    WKUserContentController * wkUController = [[WKUserContentController alloc] init];
    [wkUController addScriptMessageHandler: self name: @"finishActivity"];//不带参数的调用

    [wkUController addUserScript:wkUScript];
    configuration.userContentController= wkUController;
    
    self.wkWebView = [[WKWebView alloc]initWithFrame:CGRectMake(0, 0, WIDTH, MyViewHEIGHT) configuration:configuration];
    self.wkWebView.navigationDelegate = self;
    self.wkWebView.UIDelegate = self;
    if (@available(iOS 11.0, *)) {
        self.wkWebView.scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
    }
    [self.view addSubview:self.wkWebView];
    self.wkWebView.scrollView.bounces = false;//禁止滑动
    [self webViewRequest];
    /*
     [self.wkWebView evaluateJavaScript:@"htmlBack" completionHandler:^(id _Nullable response, NSError * _Nullable error) {
         NSLog(@"response: %@ error: %@", response, error);
         if (response) {
             [self back];
         }
     }];
     */

        
}

- (void)finishActivity {
    
    
}


- (void)webViewRequest{
    NSString *urlString = self.webUrl;
    [self hiddenAllMBProgressHUD];
    if (urlString.length > 0) {
        [self showMBProgressHUDOnlyWithString:@"加载中"];
        NSURL *url = [NSURL URLWithString:urlString];
        NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
        if (self.wkWebView) {
            [self.wkWebView loadRequest:urlRequest];
        }
    }
}




#pragma mark - WKNavigationDelegate
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message{
    if ([message.name isEqualToString:@"JSCallback"]) {
        if (message.body) {
            NSData *jsonData = [message.body dataUsingEncoding:NSUTF8StringEncoding];
            NSError *err;
            NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData
                                                                options:NSJSONReadingMutableContainers
                                                                  error:&err];
            if(err) {
            }
            WkJSMessageType messageType = [[dic objectForKey:@"messageType"] intValue];
            switch (messageType) {
                case WkJSMessageTypeBack:{
//                    [self.navigationController popViewControllerAnimated:YES];
                }
                    break;
                default:
                    break;
            }
        }
        
    } else if ([message.name isEqualToString:@"htmlBack"]) {
        [[NSNotificationCenter defaultCenter] postNotificationName:@"fromWebToReloadData" object:nil];
    }
}

#pragma mark - WKScriptMessageHandler
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures {
    [self hiddenAllMBProgressHUD];
    if (!navigationAction.targetFrame.isMainFrame) {
        [webView loadRequest:navigationAction.request];
    }
    return nil;
}

- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{
    if (!self.webTitle) {
        self.title =  @"加载中...";
    }
}

- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation{
    [self hiddenAllMBProgressHUD];

    if (!self.webTitle) {
        self.title = webView.title;
    }

}

- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(nonnull NSError *)error{
    [self hiddenAllMBProgressHUD];
}














#pragma mark - ACTION
- (void)ToClickNavRight:(UIButton *)button{
  
}


#pragma mark - 自定义
- (void)onBackClicked{
    if ( self.wkWebView.canGoBack){
        [self.wkWebView goBack];
    } else {
        [self clearWebViewCache];
    }
}

- (void)clearWebViewCache{
    if (iOS9Later) {
        NSSet *websiteDataTypes = [WKWebsiteDataStore allWebsiteDataTypes];
        NSDate *dateFrom = [NSDate dateWithTimeIntervalSince1970:0];
        [[WKWebsiteDataStore defaultDataStore] removeDataOfTypes:websiteDataTypes modifiedSince:dateFrom completionHandler:^{
            NSLog(@"-----clear webView cache success------");
        }];
    } else {
        NSString *libraryPath = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) objectAtIndex:0];
        NSString *cookiesFolderPath = [libraryPath stringByAppendingString:@"/Cookies"];
        NSError *errors;
        [[NSFileManager defaultManager] removeItemAtPath:cookiesFolderPath error:&errors];
        if (!errors) {
            NSLog(@"-----clear wkWebView cache success------");
        }
    }
}
- (NSString *)URLEncodedString:(NSString *)urlString{
    NSString *encodePath ;
    if (!IOS7) {
        encodePath = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    }else{
        encodePath = [urlString stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
    }return encodePath;
}


#pragma mark - SETTER
- (void)setRightType:(RightNavType)rightType{
    _rightType = rightType;
}

- (void)setWebUrl:(NSString *)webUrl{
    _webUrl = webUrl;
    [self webViewRequest];
}


@end