WKWebView汇总

WKWebView

//
//  WebViewController.m
//  XiaoYan
//
//  Created by liyu on 16/7/31.
//  Copyright © 2016年 Baienda Technology. All rights reserved.
//

#import "WebViewController.h"
#import "UserInfoViewController.h"
#import "CDCacheManager.h"
#import "XiaoYuanNetworkService.h"
#import 
#import "ConfirmPaymentViewController.h"
#import "CourseOrderDetailViewController.h"
#import "OrderDetailViewController.h"

@interface WebViewController () 

@property (nonatomic, strong) WKWebView *webView;
@property (nonatomic, strong) UIProgressView *progressView;
@property (nonatomic, assign) BOOL previousNavigationControllerNavigationBarHidden;
@property (nonatomic, strong) UIBarButtonItem *closeItem;
@property (nonatomic, strong) UIBarButtonItem *backItem;

@end

@implementation WebViewController

- (UIBarButtonItem *)closeItem {
    if (!_closeItem) {
        _closeItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemStop
                                                                   target:self
                                                                   action:@selector(close:)];
    }
    return _closeItem;
}

- (UIBarButtonItem *)backItem {
    if (!_backItem) {
        _backItem =  [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"BrowserNavBack"]
                                                      style:UIBarButtonItemStylePlain
                                                     target:self
                                                     action:@selector(goBack:)];
    }
    return _backItem;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor blackColor];
    self.previousNavigationControllerNavigationBarHidden = self.navigationController.navigationBarHidden;
    
    [self setupViews];
    
    [_webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:NULL];
    [_webView addObserver:self forKeyPath:@"title" options:NSKeyValueObservingOptionNew context:NULL];
}

- (void)setupViews {
    WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];
    config.preferences = [[WKPreferences alloc] init];
//    config.preferences.minimumFontSize = 40;
    config.preferences.javaScriptEnabled = YES;
    config.preferences.javaScriptCanOpenWindowsAutomatically = YES;
    config.userContentController = [[WKUserContentController alloc] init];
//    config.allowsInlineMediaPlayback = YES;
//    config.requiresUserActionForMediaPlayback = YES;
//    config.mediaPlaybackRequiresUserAction = YES;
    [config.userContentController addScriptMessageHandler:self name:@"UserProfile"];
    [config.userContentController addScriptMessageHandler:self name:@"OrderDetail"];
    
    _webView = [[WKWebView alloc] initWithFrame:CGRectZero configuration:config];
    _webView.multipleTouchEnabled = YES;
    _webView.allowsBackForwardNavigationGestures = !self.backForwardNavigationGesturesDisabled;
    _webView.navigationDelegate = self;
    _webView.UIDelegate = self;
    [self.view addSubview:_webView];
    
    _progressView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleDefault];
    _progressView.trackTintColor = [UIColor clearColor];
    _progressView.progressTintColor = [UIColor colorWithRGB:0x1ecab7];
    _progressView.hidden = _progressBarHidden;
    [self.view addSubview:_progressView];
    
    [_webView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.left.bottom.right.equalTo(self.view);
    }];
    
    [_progressView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.left.right.equalTo(self.view);
        make.height.mas_equalTo(@2);
    }];
    
    if (self.closeButtonHidden) {
        self.navigationItem.leftBarButtonItem = self.backItem;
    } else {
        self.navigationItem.leftBarButtonItems = @[self.backItem, self.closeItem];
    }
    
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(exitFullScreen) name:UIWindowDidBecomeHiddenNotification object:nil];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)dealloc {
    [self.webView removeObserver:self forKeyPath:@"estimatedProgress"];
    [self.webView removeObserver:self forKeyPath:@"title"];
    
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIWindowDidBecomeVisibleNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIWindowDidBecomeHiddenNotification object:nil];
}

- (void)exitFullScreen {
    [UIApplication sharedApplication].statusBarHidden = NO;
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    [self.navigationController setNavigationBarHidden:NO animated:YES];
    if (self.navigationControllerInteractivePopGestureRecognizerDisabled) {
        // 禁止返回手势
        self.navigationController.interactivePopGestureRecognizer.enabled = NO;
    }
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    [self.navigationController setNavigationBarHidden:self.previousNavigationControllerNavigationBarHidden animated:YES];
    if (self.navigationControllerInteractivePopGestureRecognizerDisabled) {
        // 恢复返回手势
        self.navigationController.interactivePopGestureRecognizer.enabled = YES;
    }
}

- (void)loadRequest:(NSURLRequest *)request {
    [self loadViewIfNeeded];
    [self.webView loadRequest:request];
}

- (void)loadURL:(NSURL *)URL {
    [self loadRequest:[NSURLRequest requestWithURL:URL]];
}

- (void)loadURLString:(NSString *)URLString {
    NSURL *URL = [NSURL URLWithString:URLString];
    [self loadURL:URL];
}

- (void)goBack:(id)sender {
    if (!self.backForwardNavigationGesturesDisabled && [self.webView canGoBack]) {
        [self.webView goBack];
    } else {
        [self removeScriptMessageHandler];
        [self.navigationController popViewControllerAnimated:YES];
    }
}

- (void)close:(id)sender {
    [self removeScriptMessageHandler];
    [self.navigationController popViewControllerAnimated:YES];
}

- (void)removeScriptMessageHandler {
    WKUserContentController *controller = self.webView.configuration.userContentController;
    [controller removeScriptMessageHandlerForName:@"UserProfile"];
    [controller removeScriptMessageHandlerForName:@"OrderDetail"];
}

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
    if ([keyPath isEqualToString:@"estimatedProgress"] && object == self.webView) {
        self.progressView.alpha = 1.0f;
        BOOL animated = self.webView.estimatedProgress > self.progressView.progress;
        [self.progressView setProgress:self.webView.estimatedProgress animated:animated];
        if (self.webView.estimatedProgress >= 1.0f) {
            [UIView animateWithDuration:0.3f delay:0.3f options:UIViewAnimationOptionCurveEaseOut animations:^{
                self.progressView.alpha = 0.0f;
            } completion:^(BOOL finished) {
                [self.progressView setProgress:0.0f animated:NO];
            }];
        }
    } else if ([keyPath isEqualToString:@"title"] && object == self.webView) {
        self.title = self.webView.title;
    } else {
        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
    }
}

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

- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
    NSURL *URL = navigationAction.request.URL;
    if (![self externalAppRequiredToOpenURL:URL]) {
        if (!navigationAction.targetFrame) {
            [self loadURL:URL];
            decisionHandler(WKNavigationActionPolicyCancel);
            return;
        }
    } else if ([[UIApplication sharedApplication] canOpenURL:URL]) {
        [[UIApplication sharedApplication] openURL:URL];
        decisionHandler(WKNavigationActionPolicyCancel);
        return;
    }
    decisionHandler(WKNavigationActionPolicyAllow);
}

- (BOOL)externalAppRequiredToOpenURL:(NSURL *)URL {
    NSSet *validSchemes = [NSSet setWithArray:@[@"http", @"https"]];
    return ![validSchemes containsObject:URL.scheme];
}

- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message {
    if ([self.webView.URL.absoluteString hasPrefix:XIAOYUAN_HOST]) {
        if ([message.name isEqualToString:@"UserProfile"]) {
            NSString *userId = message.body;
            AVUser *user = [[CDCacheManager manager] lookupUser:userId];
            if (user) {
                [self.navigationController pushViewController:[[UserInfoViewController alloc] initWithUser:user] animated:YES];
            } else {
                user = [AVUser objectWithObjectId:userId];
                [user fetchInBackgroundWithBlock:^(AVObject *object, NSError *error) {
                    if (!error) {
                        [[CDCacheManager manager] registerUser:user];
                        [self.navigationController pushViewController:[[UserInfoViewController alloc] initWithUser:user] animated:YES];
                    }
                }];
            }
        } else if ([message.name isEqualToString:@"OrderDetail"]) {
            NSString *orderId = message.body;
            MBProgressHUD *hud = [MBProgressHelper showProgressAddedTo:self.navigationController.view];
            [[XiaoYuanNetworkService manager] getOrderWithOrderId:orderId block:^(XYOrder *order, NSError *error) {
                if (!error) {
                    if ([order.status isEqualToNumber:@0]) {
                        [MBProgressHelper hideProgress:hud];
                        ConfirmPaymentViewController *confirmPaymentVC = [[ConfirmPaymentViewController alloc]init];
                        confirmPaymentVC.order = order;
                        confirmPaymentVC.pushFromWallet = YES;
                        [self.navigationController pushViewController:confirmPaymentVC animated:YES];
                    } else if ([order.status isEqualToNumber:@1]){
                        if ([order.orderType isEqualToString:@"course"]) {
                            [MBProgressHelper hideProgress:hud];
                            CourseOrderDetailViewController *courseOrderDetailVC = [[CourseOrderDetailViewController alloc]init];
                            courseOrderDetailVC.courseOrder = order;
                            courseOrderDetailVC.pushFromWallet = YES;
                            [self.navigationController pushViewController:courseOrderDetailVC animated:YES];
                        } else if ([order.orderType isEqualToString:@"product"]){
                            [MBProgressHelper hideProgress:hud];
                            OrderDetailViewController *orderDetailVC = [[OrderDetailViewController alloc]init];
                            orderDetailVC.productOrder = order;
                            orderDetailVC.pushFromWallet = YES;
                            [self.navigationController pushViewController:orderDetailVC animated:YES];
                        }
                    } else if ([order.status isEqualToNumber:@4]){
                        [MBProgressHelper hideProgress:hud];
                        [MBProgressHelper showTextAddedTo:self.view labelText:@"订单已过期"];
                    }
                }
            }];
        }
    }
}

@end