jyiosapp/ios/JianYuIOS/JianYuIOS/JYWKNewWebController.m

//
//  JYWKNewWebController.m
//  JianYuIOS
//
//  Created by apple on 2020/8/24.
//  Copyright © 2020 lixianglan. All rights reserved.
//

#import "JYWKNewWebController.h"
#import <WebKit/WebKit.h>

@interface JYWKNewWebController ()<WKNavigationDelegate>
@property (nonatomic, strong) UIProgressView *progressView;
@property (nonatomic, strong) WKWebView *webView;


@end

@implementation JYWKNewWebController


-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    [self.navigationController setNavigationBarHidden:YES animated:animated];
}
//进度条
- (UIProgressView *)progressView
{
    if (_progressView == nil) {
        CGFloat H = 0.0;
        if (self.titleShow ) {
            if ([self.titleShow isEqualToString:@"-1"]) {
               
            }else {
                H = NAVIGATION_BAR_HEIGHT;
            }
        }
        _progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(0,H - 2,WIDTH,2)];
        _progressView.tintColor = [UIColor blueColor];
        _progressView.trackTintColor = [UIColor whiteColor];
    }
    return _progressView;
}

#pragma mark - event response
// 计算wkWebView进度条
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    if (object == self.webView && [keyPath isEqualToString:@"estimatedProgress"]) {
        CGFloat newprogress = [[change objectForKey:NSKeyValueChangeNewKey] doubleValue];
        self.progressView.alpha = 1.0f;
        [self.progressView setProgress:newprogress animated:YES];
        if (newprogress >= 1.0f) {
            [UIView animateWithDuration:0.3f
                                  delay:0.3f
                                options:UIViewAnimationOptionCurveEaseOut
                             animations:^{
                                 self.progressView.alpha = 0.0f;
                             }
                             completion:^(BOOL finished) {
                                 [self.progressView setProgress:0 animated:NO];
                             }];
        }
        
    } else {
        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
    }
}

-(void)initUI {
    //默认都隐藏
    UIButton *backBtn_1 = [ZKControl createButtonWithFrame:CGRectMake(15, STATUS_BAR_HEIGHT+15, 30, 30) title:@"" imageName:@"back_normal" bgImageName:nil target:self method:@selector(backBtn1Click)];
    backBtn_1.backgroundColor = [UIColor blackColor];
    backBtn_1.layer.cornerRadius = 15;
    backBtn_1.layer.masksToBounds = YES;
    
    
    UIView *titleView = [ZKControl createViewWithFrame:CGRectMake(0, 0, WIDTH, NAVIGATION_BAR_HEIGHT) color:[UIColor whiteColor]];
    [self.view addSubview:titleView];
    

    //默认都隐藏
    UIButton *backBtn_2 = [ZKControl createButtonWithFrame:CGRectMake(10, STATUS_BAR_HEIGHT, 60, 44) title:@"" imageName:@"arrowLeft" bgImageName:nil target:self method:@selector(backBtn2Click)];
    UILabel *titleLabel = [ZKControl createLabelWithFrame:CGRectMake(50, STATUS_BAR_HEIGHT, WIDTH-100, 44) font:17 text:@"公告信息" TextAlignment:NSTextAlignmentCenter TextColor:UIColorFromRGB(0x333333) bgColor:nil];
    UIView *lineView= [ZKControl createViewWithFrame:CGRectMake(0, NAVIGATION_BAR_HEIGHT-1, WIDTH, 1) color:[UIColor groupTableViewBackgroundColor]];
    
    [titleView addSubview:titleLabel];
    [titleView addSubview:backBtn_2];
    [titleView addSubview:lineView];
    CGFloat H = 0.0;
    if (self.titleShow) {
        titleLabel.text = self.titleShow;
        if ([self.titleShow isEqualToString:@"-1"]) {
            titleView.hidden = YES;
            backBtn_1.hidden = YES;
        }else {
            titleView.hidden = NO;
            backBtn_1.hidden = YES;
            H = NAVIGATION_BAR_HEIGHT;
        }
    }else {
        titleView.hidden = YES;
        backBtn_1.hidden = NO;
    }
    
    
    WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];
    config.preferences = [[WKPreferences alloc] init];
    config.preferences.minimumFontSize = 0;
    config.allowsInlineMediaPlayback = YES;
    self.webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, H, WIDTH, HEIGHT-STATUS_BAR_HEIGHT-H) configuration:config];
    if (iPhoneX) {
        if (@available(iOS 11.0, *)) {
            _webView.scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
        }
    }
    self.webView.scrollView.bounces = NO;
    self.webView.navigationDelegate = self;
    self.webView.userInteractionEnabled = YES;
    [self.view addSubview:self.webView];
    [self.webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:nil];
    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:self.url]]];
    [self.view addSubview:backBtn_1];
    [self.view addSubview:titleView];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    self.view.backgroundColor = [UIColor whiteColor];
    NSLog(@"title:%@",self.titleShow);
    NSLog(@"url:%@",self.url);
    [self initUI];//渲染页面
    [self.view addSubview:self.progressView];
    

}



#pragma mark - WKNavigationDelegate
/* 页面加载完成 */
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{
    
//    NSLog(@"-----页面加载完成%@",webView.URL.absoluteString);
    [self.webView evaluateJavaScript:@"document.documentElement.style.webkitTouchCallout='none';" completionHandler:nil];
}

// 页面开始加载时调用
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{

}
// 当内容开始返回时调用
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation{
}

// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(nonnull NSError *)error{
    [[GlobalData shareInstance] addOnePlistData:@{
        @"detail":[[self stringByEvaluatingJavaScriptFromString:@"document.location.href"] stringByAppendingString:[NSString stringWithFormat:@"\n%@",[error description]]],
        @"reqTime":[NSNumber numberWithInt:0],
    }];
}


-(void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
    //如果是跳转一个新页面
    if (navigationAction.targetFrame == nil) {
        [webView loadRequest:navigationAction.request];
    }
 
    decisionHandler(WKNavigationActionPolicyAllow);
}

- (NSString *)stringByEvaluatingJavaScriptFromString:(NSString *)script
{
    __block NSString *resultString = nil;
    __block BOOL finished = NO;

    [self.webView evaluateJavaScript:script completionHandler:^(id result, NSError *error) {
        if (error == nil) {
            if (result != nil) {
                resultString = [NSString stringWithFormat:@"%@", result];
            }
        } else {
            NSLog(@"evaluateJavaScript error : %@", error.localizedDescription);
        }
        finished = YES;
    }];

    while (!finished) {
        [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
    }
    return resultString;
}




-(void)backBtn1Click
{
    if (self.webView.canGoBack) {// web能退 就后退
        [self.webView goBack];
    }else{// 跳回上级页面
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}
-(void)backBtn2Click
{
    if (self.webView.canGoBack) {// web能退 就后退
        [self.webView goBack];
    }else{// 跳回上级页面
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}

-(void)dismissSelf{
    kMainQueue(^{
        [self dismissViewControllerAnimated:NO completion:nil];
    });
}



-(void)dealloc {
    NSLog(@"释放");
}




/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end