李伯坤
298 lines
11 KiB
Objective-C
298 lines
11 KiB
Objective-C
//
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// TLWebViewController.m
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// TLChat
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//
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// Created by 李伯坤 on 16/2/10.
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// Copyright © 2016年 李伯坤. All rights reserved.
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//
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#import "TLWebViewController.h"
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#import <MobClick.h>
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#define WEBVIEW_NAVBAR_ITEMS_FIXED_SPACE 9
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@interface TLWebViewController ()
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@property (nonatomic, strong) WKWebView *webView;
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@property (nonatomic, strong) UIProgressView *progressView;
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@property (nonatomic, strong) UIBarButtonItem *backButtonItem;
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@property (nonatomic, strong) UIBarButtonItem *closeButtonItem;
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@property (nonatomic, strong) UILabel *authLabel;
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@end
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@implementation TLWebViewController
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- (id)init
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{
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if (self = [super init]) {
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self.useMPageTitleAsNavTitle = YES;
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self.showLoadingProgress = YES;
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}
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return self;
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}
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- (void)loadView
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{
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[super loadView];
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[self.view addSubview:self.authLabel];
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[self.view addSubview:self.webView];
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[self.view addSubview:self.progressView];
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}
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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[self setAutomaticallyAdjustsScrollViewInsets:NO];
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[self.view setBackgroundColor:[UIColor colorBlackBG]];
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[self.webView.scrollView setBackgroundColor:[UIColor clearColor]];
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for (id vc in self.webView.scrollView.subviews) {
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NSString *className = NSStringFromClass([vc class]);
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if ([className isEqualToString:@"WKContentView"]) {
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[vc setBackgroundColor:[UIColor whiteColor]];
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break;
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}
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}
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[self.webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:NULL];
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[self.webView.scrollView addObserver:self forKeyPath:@"backgroundColor" options:NSKeyValueObservingOptionNew context:NULL];
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}
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- (void)viewWillAppear:(BOOL)animated
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{
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[super viewWillAppear:animated];
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[MobClick beginLogPageView:@"WebVC"];
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[self.progressView setProgress:0.0f];
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[self.webView loadRequest:[NSURLRequest requestWithURL:TLURL(self.url)]];
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if (!self.disableBackButton && self.navigationItem.leftBarButtonItems.count <= 2) {
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[self.navigationItem setLeftBarButtonItems:@[[UIBarButtonItem fixItemSpace:-WEBVIEW_NAVBAR_ITEMS_FIXED_SPACE], self.backButtonItem]];
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}
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}
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- (void)viewWillDisappear:(BOOL)animated
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{
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[super viewWillDisappear:animated];
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[MobClick endLogPageView:@"WebVC"];
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[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
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}
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- (void)dealloc
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{
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[self.webView removeObserver:self forKeyPath:@"estimatedProgress"];
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[self.webView.scrollView removeObserver:self forKeyPath:@"backgroundColor"];
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#ifdef DEBUG_MEMERY
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NSLog(@"dealloc WebVC");
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#endif
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}
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#pragma mark - Public Methods -
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- (void)setUrl:(NSString *)url
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{
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_url = url;
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if ([self.view isFirstResponder]) {
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[self.progressView setProgress:0.0f];
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[self.webView loadRequest:[NSURLRequest requestWithURL:TLURL(self.url)]];
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}
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}
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- (void)setShowLoadingProgress:(BOOL)showLoadingProgress
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{
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_showLoadingProgress = showLoadingProgress;
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[self.progressView setHidden:!showLoadingProgress];
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}
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#pragma mark - Event Response -
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- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
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if (self.showLoadingProgress && [keyPath isEqualToString:@"estimatedProgress"] && object == self.webView) {
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[self.progressView setAlpha:1.0f];
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[self.progressView setProgress:self.webView.estimatedProgress animated:YES];
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if(self.webView.estimatedProgress >= 1.0f) {
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[UIView animateWithDuration:0.3 delay:0.3 options:UIViewAnimationOptionCurveEaseOut animations:^{
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[self.progressView setAlpha:0.0f];
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} completion:^(BOOL finished) {
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[self.progressView setProgress:0.0f animated:NO];
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}];
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}
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}
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else if ([keyPath isEqualToString:@"backgroundColor"] && object == self.webView.scrollView) {
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UIColor *color = [change objectForKey:@"new"];
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if (!CGColorEqualToColor(color.CGColor, [UIColor clearColor].CGColor)) {
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[object setBackgroundColor:[UIColor clearColor]];
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}
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}
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}
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- (void)navBackButotnDown
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{
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if (self.webView.canGoBack) {
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[self.webView goBack];
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[self.navigationItem setLeftBarButtonItems:@[[UIBarButtonItem fixItemSpace:-WEBVIEW_NAVBAR_ITEMS_FIXED_SPACE], self.backButtonItem, self.closeButtonItem]];
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}
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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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- (void)navCloseButtonDown
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{
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[self.navigationController popViewControllerAnimated:YES];
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}
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#pragma mark - Delegate -
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//MARK: WKNavigationDelegate
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// 开始加载页面
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- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation
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{
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[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
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}
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// 开始返回页面内容
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- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation
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{
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}
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// 加载完成
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- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
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{
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[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
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if (self.useMPageTitleAsNavTitle) {
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[self.navigationItem setTitle:webView.title];
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[self.authLabel setText:[NSString stringWithFormat:@"网页由 %@ 提供", webView.URL.host]];
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[self.authLabel setHeight:[self.authLabel sizeThatFits:CGSizeMake(self.authLabel.width, MAXFLOAT)].height];
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}
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}
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// 加载失败
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- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error
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{
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[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
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}
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// 页面跳转处理
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// 接收到服务器跳转请求之后调用
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- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation
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{
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}
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// 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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{
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decisionHandler(WKNavigationResponsePolicyAllow);
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}
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// 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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{
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NSString *urlString = navigationAction.request.URL.absoluteString;
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if ([urlString hasPrefix:@"itms-apps://itunes.apple.com"] || [urlString hasPrefix:@"https://itunes.apple.com"] || [urlString hasPrefix:@"itms-services:"]) {
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[[UIApplication sharedApplication] openURL:navigationAction.request.URL];
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decisionHandler(WKNavigationActionPolicyCancel);
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}
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else {
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decisionHandler(WKNavigationActionPolicyAllow);
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}
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}
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//MARK: WKUIDelegate
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// web界面中有弹出警告框
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- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(nonnull NSString *)message initiatedByFrame:(nonnull WKFrameInfo *)frame completionHandler:(nonnull void (^)(void))completionHandler
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{
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UIAlertController *alertController = [UIAlertController alertControllerWithTitle:message message:nil preferredStyle:UIAlertControllerStyleAlert];
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[alertController addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
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completionHandler();
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}]];
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[self presentViewController:alertController animated:YES completion:^{}];
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}
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// web界面中有确认框
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- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(nonnull NSString *)message initiatedByFrame:(nonnull WKFrameInfo *)frame completionHandler:(nonnull void (^)(BOOL))completionHandler
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{
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UIAlertController *alertController = [UIAlertController alertControllerWithTitle:message
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message:nil
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preferredStyle:UIAlertControllerStyleAlert];
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[alertController addAction:[UIAlertAction actionWithTitle:@"确定"
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style:UIAlertActionStyleDefault
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handler:^(UIAlertAction *action) {
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completionHandler(YES);
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}]];
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[alertController addAction:[UIAlertAction actionWithTitle:@"取消"
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style:UIAlertActionStyleCancel
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handler:^(UIAlertAction *action){
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completionHandler(NO);
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}]];
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[self presentViewController:alertController animated:YES completion:^{}];
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}
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// web界面中有弹出输入框
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- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(nonnull NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(nonnull WKFrameInfo *)frame completionHandler:(nonnull void (^)(NSString * _Nullable))completionHandler {
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completionHandler(@"Client Not handler");
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}
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#pragma mark - Getter -
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- (WKWebView *)webView
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{
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if (_webView == nil) {
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_webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, HEIGHT_NAVBAR + HEIGHT_STATUSBAR, WIDTH_SCREEN, HEIGHT_SCREEN - HEIGHT_NAVBAR - HEIGHT_STATUSBAR)];
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[_webView setAllowsBackForwardNavigationGestures:YES];
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[_webView setNavigationDelegate:self];
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[_webView setUIDelegate:self];
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[_webView setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
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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) {
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_progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(0, HEIGHT_NAVBAR + HEIGHT_STATUSBAR, WIDTH_SCREEN, 10.0f)];
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[_progressView setTransform: CGAffineTransformMakeScale(1.0f, 2.0f)];
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[_progressView setProgressTintColor:[UIColor colorGreenDefault]];
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[_progressView setTrackTintColor:[UIColor clearColor]];
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}
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return _progressView;
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}
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- (UIBarButtonItem *)backButtonItem
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{
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if (_backButtonItem == nil) {
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_backButtonItem = [[UIBarButtonItem alloc] initWithBackTitle:@"返回" target:self action:@selector(navBackButotnDown)];
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}
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return _backButtonItem;
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}
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- (UIBarButtonItem *)closeButtonItem
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{
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if (_closeButtonItem == nil) {
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_closeButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"关闭" style:UIBarButtonItemStylePlain target:self action:@selector(navCloseButtonDown)];
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}
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return _closeButtonItem;
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}
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- (UILabel *)authLabel
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{
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if (_authLabel == nil) {
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_authLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, HEIGHT_NAVBAR + HEIGHT_STATUSBAR + 13, WIDTH_SCREEN - 40, 0)];
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[_authLabel setFont:[UIFont systemFontOfSize:12.0f]];
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[_authLabel setTextAlignment:NSTextAlignmentCenter];
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[_authLabel setTextColor:[UIColor colorTextGray]];
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[_authLabel setNumberOfLines:0];
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}
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return _authLabel;
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}
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@end
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