jyiosapp/ios/JianYuIOS/JianYuIOS/NewWebController.m

//
//  NewWebController.m
//  JianYuIOS
//
//  Created by lixianglan on 2018/2/1.
//  Copyright © 2018年 lixianglan. All rights reserved.
//

#import "NewWebController.h"

@interface NewWebController ()<UIWebViewDelegate>

@property (weak, nonatomic) IBOutlet UIWebView *webView;
@property (weak, nonatomic) IBOutlet UIButton *backBtn;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *topC;
@property(nonatomic, strong)LXProgressView *progressView;
@property (weak, nonatomic) IBOutlet UIView *topView;
@property (weak, nonatomic) IBOutlet UILabel *titleLbl;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *topViewH;




@end

@implementation NewWebController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
//    if ([[UIDevice currentDevice].systemVersion floatValue] >= 11.0) {
//        self.topC.constant = -20;
//        [self.webView updateConstraints];
//    }
    if (IphonexAboveScreen) {
        self.topC.constant = 44;
        [self.view updateConstraints];
    }
    
    NSLog(@"%@",self.titleShow);
    if (self.titleShow) {
        self.backBtn.hidden = YES;
        self.titleLbl.text = self.titleShow;
        
        if([self.titleShow isEqualToString:@"-1"]) {
            self.topC.constant = -20;
            [self.webView updateConstraints];
            self.topViewH.constant = 0;
            self.topView.hidden = YES;
            [self.view updateConstraints];
        }
    }else{
        
        self.topC.constant = -20;
        [self.webView updateConstraints];
        
        self.topViewH.constant = 0;
        self.topView.hidden = YES;
        [self.view updateConstraints];
    }
    
    self.webView.scrollView.bounces = NO;
    self.webView.delegate = self;
    
    self.webView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
    self.webView.scalesPageToFit=YES;
    self.webView.multipleTouchEnabled=YES;
    self.webView.userInteractionEnabled=YES;
    
//    [[LXViewControllerManager shareViewControllerManager] showHudText:nil];
    [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:self.url]]];
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(dismissSelf) name:@"kNewWebControllerDismiss" object:nil];
}

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

#pragma mark  webView代理方法
-(void)webViewDidFinishLoad:(UIWebView *)webView{
//    [[LXViewControllerManager shareViewControllerManager] hideHud];
    [self removeProgresView];
    // Disable user selection
    [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitUserSelect='none';"];
    // Disable callout
    [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.style.webkitTouchCallout='none';"];
}


-(void)webViewDidStartLoad:(UIWebView *)webView{
    if (!self.titleShow) {
        [self addProgressView];
    }
}

// 显示加载进度条
-(void)addProgressView{
    if (self.progressView) {
        [self.progressView removeFromSuperview];
        self.progressView = nil;
    }
    self.progressView = [[LXProgressView alloc] init];
    self.progressView.frame = CGRectMake(0, CGRectGetMinY(self.webView.frame), kCurrentDeviceWidth, 2);
    [self.view addSubview:self.progressView];
}

// 移除加载进度条
-(void)removeProgresView{
    self.progressView.progress = .99;
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        if (self.progressView) {
            [self.progressView removeFromSuperview];
            self.progressView = nil;
        }
    });
}

- (IBAction)backBtnAction:(id)sender {
    if (self.webView.canGoBack) {// web能退 就后退
        [self.webView goBack];
    }else{// 跳回上级页面
        [self dismissViewControllerAnimated:NO completion:nil];
    }
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
    NSURLCache * cache = [NSURLCache sharedURLCache];
    [cache removeAllCachedResponses];
    [cache setDiskCapacity:0];
    [cache setMemoryCapacity:0];
}

/*
#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