//
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// LMJWebViewController.m
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// PLMMPRJK
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//
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// Created by NJHu on 2017/4/9.
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// Copyright © 2017年 GoMePrjk. All rights reserved.
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//
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#import "LMJWebViewController.h"
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@interface LMJWebViewController ()
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/** <#digest#> */
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@property (weak, nonatomic) UIProgressView *progressView;
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/** <#digest#> */
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@property (strong, nonatomic) UIButton *backBtn;
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/** <#digest#> */
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@property (strong, nonatomic) UIButton *closeBtn;
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@end
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@implementation LMJWebViewController
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- (void)setGotoURL:(NSString *)gotoURL {
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// @"`#%^{}\"[]|\\<> " 最后有一位空格
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_gotoURL = [gotoURL stringByAddingPercentEncodingWithAllowedCharacters:[[NSCharacterSet characterSetWithCharactersInString:@"`#%^{}\"[]|\\<> "] invertedSet]];
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}
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#pragma mark - 生命周期
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- (void)viewDidLoad {
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[super viewDidLoad];
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self.fd_interactivePopDisabled = YES;
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TWWeak(self);
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[self.webView addObserverBlockForKeyPath:TWKeyPath(weakself.webView, estimatedProgress) block:^(id _Nonnull obj, id _Nullable oldVal, id _Nullable newVal) {
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weakself.progressView.progress = weakself.webView.estimatedProgress;
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// 加载完成
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if (weakself.webView.estimatedProgress >= 1.0f ) {
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[UIView animateWithDuration:0.25f animations:^{
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weakself.progressView.alpha = 0.0f;
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weakself.progressView.progress = 0.0f;
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}];
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}else{
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weakself.progressView.alpha = 1.0f;
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}
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}];
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[self.webView addObserverBlockForKeyPath:TWKeyPath(self.webView, title) block:^(id _Nonnull obj, id _Nullable oldVal, id _Nullable newVal) {
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if (!TWIsEmpty(newVal) && [newVal isKindOfClass:[NSString class]] && [self webViewController:self webViewIsNeedAutoTitle:self.webView]) {
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weakself.title = newVal;
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}
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}];
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[self.webView.scrollView addObserverBlockForKeyPath:TWKeyPath(self.webView.scrollView, contentSize) block:^(id _Nonnull obj, id _Nullable oldVal, id _Nullable newVal) {
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[weakself webView:weakself.webView scrollView:weakself.webView.scrollView contentSize:weakself.webView.scrollView.contentSize];
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}];
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if (self.gotoURL.length > 0) {
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[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:self.gotoURL]]];
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}else if (!TWIsEmpty(self.contentHTML)) {
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[self.webView loadHTMLString:self.contentHTML baseURL:nil];
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}
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}
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- (void)viewDidLayoutSubviews
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{
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[super viewDidLayoutSubviews];
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[self.view bringSubviewToFront:self.progressView];
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}
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#pragma mark - LMJNavUIBaseViewControllerDataSource
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#pragma mark - 设置左上角的一个返回按钮和一个关闭按钮
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/** 导航条的左边的 view */
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- (UIView *)lmjNavigationBarLeftView:(LMJNavigationBar *)navigationBar
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{
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UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 90, 44)];
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leftView.backgroundColor = [UIColor yellowColor];
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self.backBtn.mj_origin = CGPointZero;
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self.closeBtn.lmj_x = leftView.lmj_width - self.closeBtn.lmj_width;
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[leftView addSubview:self.backBtn];
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[leftView addSubview:self.closeBtn];
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return leftView;
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}
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- (void)leftButtonEvent:(UIButton *)sender navigationBar:(LMJNavigationBar *)navigationBar
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{
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[self backBtnClick:sender webView:self.webView];
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}
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- (void)left_close_button_event:(UIButton *)sender
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{
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[self closeBtnClick:sender webView:self.webView];
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}
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#pragma mark - LMJWebViewControllerDataSource
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// 默认需要, 是否需要进度条
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- (BOOL)webViewController:(LMJWebViewController *)webViewController webViewIsNeedProgressIndicator:(WKWebView *)webView
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{
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return YES;
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}
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// 默认需要自动改变标题
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- (BOOL)webViewController:(LMJWebViewController *)webViewController webViewIsNeedAutoTitle:(WKWebView *)webView
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{
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return YES;
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}
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#pragma mark - LMJWebViewControllerDelegate
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// 导航条左边的返回按钮的点击
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- (void)backBtnClick:(UIButton *)backBtn webView:(WKWebView *)webView
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{
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if (self.webView.canGoBack) {
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self.closeBtn.hidden = NO;
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[self.webView goBack];
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}else
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{
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[self closeBtnClick:self.closeBtn webView:self.webView];
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}
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}
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// 关闭按钮的点击
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- (void)closeBtnClick:(UIButton *)closeBtn webView:(WKWebView *)webView {
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// 判断两种情况: push 和 present
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if ((self.navigationController.presentedViewController || self.navigationController.presentingViewController) && self.navigationController.childViewControllers.count == 1) {
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[self dismissViewControllerAnimated:YES completion:nil];
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}else{
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[self.navigationController popViewControllerAnimated:YES];
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}
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}
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// 监听 self.webView.scrollView 的 contentSize 属性改变，从而对底部添加的自定义 View 进行位置调整
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- (void)webView:(WKWebView *)webView scrollView:(UIScrollView *)scrollView contentSize:(CGSize)contentSize
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{
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NSLog(@"%@\n%@\n%@", webView, scrollView, NSStringFromCGSize(contentSize));
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}
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#pragma mark - webDelegate
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// 1, 在发送请求之前，决定是否跳转
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- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
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NSLog(@"decidePolicyForNavigationAction ==== %@", navigationAction);
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decisionHandler(WKNavigationActionPolicyAllow);
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}
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// 2开始加载时调用
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- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(null_unspecified WKNavigation *)navigation {
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NSLog(@"didStartProvisionalNavigation ==== %@", navigation);
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}
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// 4, 在收到响应后，决定是否跳转
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- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler {
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NSLog(@"decidePolicyForNavigationResponse ==== %@", navigationResponse);
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decisionHandler(WKNavigationResponsePolicyAllow);
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}
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// 5,内容开始返回时调用
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- (void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation {
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NSLog(@"didCommitNavigation ==== %@", navigation);
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}
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// 3, 6, 加载 HTTPS 的链接，需要权限认证时调用 \ 如果 HTTPS 是用的证书在信任列表中这不要此代理方法
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- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler {
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NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
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completionHandler(NSURLSessionAuthChallengeUseCredential, credential);
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// if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
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// if ([challenge previousFailureCount] == 0) {
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//
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// NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
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// completionHandler(NSURLSessionAuthChallengeUseCredential, credential);
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// } else {
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//
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// completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
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// }
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// } else {
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//
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// completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
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// }
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}
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// 7页面加载完调用
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- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation {
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NSLog(@"didFinishNavigation ==== %@", navigation);
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}
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// 8页面加载失败时调用
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- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error {
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NSLog(@"didFailProvisionalNavigation ==== %@\nerror ==== %@", navigation, error);
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[MBProgressHUD showError:@"网页加载失败" ToView:self.view];
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}
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//当 WKWebView 总体内存占用过大，页面即将白屏的时候，系统会调用回调函数
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- (void)webViewWebContentProcessDidTerminate:(WKWebView *)webView {
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[webView reload];
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NSLog(@"webViewWebContentProcessDidTerminate");
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}
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#pragma mark - 懒加载
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- (WKWebView *)webView
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{
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if(_webView == nil)
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{
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//初始化一个WKWebViewConfiguration对象
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WKWebViewConfiguration *config = [WKWebViewConfiguration new];
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//初始化偏好设置属性：preferences
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config.preferences = [WKPreferences new];
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//The minimum font size in points default is 0;
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config.preferences.minimumFontSize = 0;
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//是否支持JavaScript
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config.preferences.javaScriptEnabled = YES;
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//不通过用户交互，是否可以打开窗口
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config.preferences.javaScriptCanOpenWindowsAutomatically = YES;
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// 检测各种特殊的字符串：比如电话、网站
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config.dataDetectorTypes = UIDataDetectorTypeAll;
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// 播放视频
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config.allowsInlineMediaPlayback = YES;
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// 交互对象设置
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// TWWeak(self);
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// config.userContentController = [[WKUserContentController alloc] init];
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// [config.userContentController addScriptMessageHandler:weakself name:<#(nonnull NSString *)#>];
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WKWebView *webView = [[WKWebView alloc] initWithFrame:self.view.bounds configuration:config];
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[self.view addSubview:webView];
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_webView = webView;
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webView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
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webView.navigationDelegate = self;
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webView.UIDelegate = self;
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webView.opaque = NO;
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webView.backgroundColor = [UIColor clearColor];
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//滑动返回看这里
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webView.allowsBackForwardNavigationGestures = YES;
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if ([self.parentViewController isKindOfClass:[UINavigationController class]]) {
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UIEdgeInsets contentInset = webView.scrollView.contentInset;
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contentInset.top += self.lmj_navgationBar.lmj_height;
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webView.scrollView.contentInset = contentInset;
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if (@available(iOS 11.0, *)){
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webView.scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
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}
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webView.scrollView.scrollIndicatorInsets = webView.scrollView.contentInset;
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}
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}
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return _webView;
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}
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- (UIProgressView *)progressView
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{
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if(_progressView == nil && [self.parentViewController isKindOfClass:[UINavigationController class]])
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{
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UIProgressView *progressView = [[UIProgressView alloc] init];
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[self.view addSubview:progressView];
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_progressView = progressView;
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progressView.lmj_height = 1;
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progressView.lmj_width = kScreenWidth;
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progressView.lmj_y = self.lmj_navgationBar.lmj_height;
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progressView.tintColor = [UIColor greenColor];
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if ([self respondsToSelector:@selector(webViewController:webViewIsNeedProgressIndicator:)]) {
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if (![self webViewController:self webViewIsNeedProgressIndicator:self.webView]) {
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progressView.hidden = YES;
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}
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}
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}
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return _progressView;
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}
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- (UIButton *)backBtn
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{
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if(_backBtn == nil)
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{
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UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
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[btn setImage:[UIImage imageNamed:@"navigationButtonReturn"] forState:UIControlStateNormal];
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[btn setImage:[UIImage imageNamed:@"navigationButtonReturnClick"] forState:UIControlStateHighlighted];
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btn.lmj_size = CGSizeMake(34, 44);
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[btn addTarget:self action:@selector(leftButtonEvent:navigationBar:) forControlEvents:UIControlEventTouchUpInside];
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_backBtn = btn;
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}
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return _backBtn;
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}
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- (UIButton *)closeBtn
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{
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if(_closeBtn == nil)
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{
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UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
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[btn setTitle:@"关闭" forState:UIControlStateNormal];
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[btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
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[btn setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
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btn.lmj_size = CGSizeMake(44, 44);
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btn.hidden = YES;
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[btn addTarget:self action:@selector(left_close_button_event:) forControlEvents:UIControlEventTouchUpInside];
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_closeBtn = btn;
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}
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return _closeBtn;
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}
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- (void)dealloc
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{
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NSLog(@"LMJWebViewController -- dealloc");
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[_webView.scrollView removeObserverBlocks];
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[_webView removeObserverBlocks];
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_webView.UIDelegate = nil;
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_webView.navigationDelegate = nil;
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_webView.scrollView.delegate = nil;
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}
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@end
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// UIWebView 使用的权限认证方式，
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//- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
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// if ([navigationAction.request.URL.absoluteString containsString:@"https://"] && IOSVersion < 9.0 && !self.httpsAuth) {
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// self.originRequest = navigationAction.request;
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// self.httpsUrlConnection = [[NSURLConnection alloc] initWithRequest:self.originRequest delegate:self];
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// [self.httpsUrlConnection start];
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// decisionHandler(WKNavigationActionPolicyCancel);
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// return;
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// }
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// decisionHandler(WKNavigationActionPolicyAllow);
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//}
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//
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//- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
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// if ([challenge previousFailureCount] == 0) {
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// self.httpsAuth = YES;
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// NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
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// [challenge.sender useCredential:credential forAuthenticationChallenge:challenge];
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// } else {
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// [[challenge sender] cancelAuthenticationChallenge:challenge];
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// }
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//}
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//
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//- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
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// self.httpsAuth = YES;
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// [self.webView loadRequest:self.originRequest];
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// [self.httpsUrlConnection cancel];
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//}
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//
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//- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace {
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// return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
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//}
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