CNLiveWebViewController.m
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//
// CNLiveWebViewController.m
// CNLiveMineModule_Example
//
// Created by CNLive-zxw on 2019/12/7.
// Copyright © 2019 153993236@qq.com. All rights reserved.
//
#import "CNLiveWebViewController.h"
#import <WebKit/WebKit.h>
#import "CNLiveCategory.h"
@interface CNLiveWebViewController ()<WKUIDelegate, WKNavigationDelegate>
@property (nonatomic, copy) NSString *url;
@property (nonatomic, assign) BOOL isShow;
@property (nonatomic, strong) UIView *navigationBar;
@property (nonatomic, strong) WKWebView *webView;
@property (nonatomic, strong) UIProgressView *processView;
@property (nonatomic, weak) UILabel *titleLabel;
@end
@implementation CNLiveWebViewController
static const NSInteger margin = 10;
#pragma mark - 初始化方法
- (instancetype)initWithUrl:(NSString *)url title:(nullable NSString *)title{
return [self initWithUrl:url title:title isShow:NO];
}
- (instancetype)initWithUrl:(NSString *)url title:(nullable NSString *)title isShow:(BOOL)isShow {
self = [super init];
if (self) {
self.url = url;
self.title = title;
self.isShow = isShow;
}
return self;
}
- (void)setTitle:(NSString *)title{
_titleLabel.text = title;
}
#pragma mark - 加载数据
- (void)loadUrl {
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:self.url] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:10.0];
[self.webView loadRequest:theRequest];
}
#pragma mark - 生命周期
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
self.navigationController.navigationBarHidden = YES;
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
self.navigationController.navigationBarHidden = NO;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
if (@available(iOS 11, *)) {
self.webView.scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;
}
else {
self.automaticallyAdjustsScrollViewInsets = NO;
}
[self createSubViews];
[self loadUrl];
}
- (void)dealloc {
[self.webView stopLoading];
[self.webView removeObserver:self forKeyPath:@"estimatedProgress"];
if (!self.title) {
[self.webView removeObserver:self forKeyPath:@"title"];
}
self.webView.UIDelegate = nil;
self.webView.navigationDelegate = nil;
self.webView = nil;
}
- (void)createSubViews {
[self.view addSubview:self.navigationBar];
[self.view addSubview:self.webView];
[self.view addSubview:self.processView];
[self.webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:nil];
if (!self.title) {
[self.webView addObserver:self forKeyPath:@"title" options:NSKeyValueObservingOptionNew context:NULL];
}
}
#pragma mark - WKNavigationDelegate
// 在发送请求之前，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{
//允许跳转
decisionHandler(WKNavigationActionPolicyAllow);
}
// 页面开始加载时调用
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{
}
// 在收到响应后，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler{
//允许跳转
decisionHandler(WKNavigationResponsePolicyAllow);
//不允许跳转
//decisionHandler(WKNavigationResponsePolicyCancel);
}
// 当内容开始返回时调用
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation{
}
// 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation{
}
// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(null_unspecified WKNavigation *)navigation withError:(nonnull NSError *)error{
NSLog(@"打印这个error%@",error);
}
// 接收到服务器跳转请求之后调用(重定向)
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation{
}
#pragma mark - 响应方法
//回退goBack
- (void)goBack {
if ([self.webView canGoBack]) {
[self.webView goBack];
}
else {
[self closeClick];
}
}
//关闭pop
- (void)closeClick {
if (self.presentingViewController != nil) {
[self dismissViewControllerAnimated:YES completion:nil];
}
else {
[self.navigationController popViewControllerAnimated:YES];
}
}
#pragma mark - KVO
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSKeyValueChangeKey,id> *)change context:(void *)context {
if ([keyPath isEqualToString:@"estimatedProgress"]) {
if (object == self.webView) {
[self.processView setAlpha:1.0f];
[self.processView setProgress:self.webView.estimatedProgress animated:YES];
if(self.webView.estimatedProgress >= 1.0f) {
[UIView animateWithDuration:0.3 delay:0.5 options:UIViewAnimationOptionCurveEaseOut animations:^{
[self.processView setAlpha:0.0f];
} completion:^(BOOL finished) {
[self.processView setProgress:0.0f animated:NO];
}];
}
}
else {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
else if ([keyPath isEqualToString:@"title"]){
if (object == self.webView) {
if (self.webView.title.length != 0) {
self.title = self.webView.title;
}
}
else {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
else {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
/*
#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.
}
*/
#pragma mark - 懒加载
- (UIView *)navigationBar{
if(!_navigationBar){
_navigationBar = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 44+[UIApplication sharedApplication].statusBarFrame.size.height)];
_navigationBar.backgroundColor = [UIColor clearColor];
[self.view bringSubviewToFront:_navigationBar];
UIButton *leftBtn = [UIButton buttonWithType:UIButtonTypeCustom];
leftBtn.adjustsImageWhenHighlighted = NO;
leftBtn.frame = CGRectMake(margin, [UIApplication sharedApplication].statusBarFrame.size.height, 44, 44);
UIImage *leftImage = [self getImageWithImageName:@"web_black_back" bundleName:@"CNLiveUserAgreementManager" targetClass:[self class]];
[leftBtn setImage:[leftImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] forState:UIControlStateNormal];
[leftBtn addTarget:self action:@selector(goBack) forControlEvents:UIControlEventTouchUpInside];
[leftBtn setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft];
[_navigationBar addSubview:leftBtn];
UIButton *closeBtn = [UIButton buttonWithType:UIButtonTypeCustom];
closeBtn.adjustsImageWhenHighlighted = NO;
closeBtn.frame = CGRectMake(44+margin, [UIApplication sharedApplication].statusBarFrame.size.height, 44, 44);
UIImage *closeImage = [self getImageWithImageName:@"web_black_close" bundleName:@"CNLiveUserAgreementManager" targetClass:[self class]];
[closeBtn setImage:[closeImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] forState:UIControlStateNormal];
[closeBtn addTarget:self action:@selector(closeClick) forControlEvents:UIControlEventTouchUpInside];
[closeBtn setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft];
closeBtn.hidden = !self.isShow;
[_navigationBar addSubview:closeBtn];
UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(([[UIScreen mainScreen] bounds].size.width - 200)/2.0, [UIApplication sharedApplication].statusBarFrame.size.height, 200, 44)];
titleLabel.font = [UIFont boldSystemFontOfSize:17];
titleLabel.textColor = [UIColor blackColor];
titleLabel.text = self.title;
titleLabel.textAlignment = NSTextAlignmentCenter;
[_navigationBar addSubview:titleLabel];
_titleLabel = titleLabel;
}
return _navigationBar;
}
- (WKWebView *)webView{
if(!_webView){
WKWebViewConfiguration * configuration = [[WKWebViewConfiguration alloc] init];
configuration.allowsInlineMediaPlayback = YES;
WKPreferences *preferences = [WKPreferences new];
preferences.javaScriptCanOpenWindowsAutomatically = YES;
configuration.preferences = preferences;
_webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, [UIApplication sharedApplication].statusBarFrame.size.height+44, [[UIScreen mainScreen] bounds].size.width, [[UIScreen mainScreen] bounds].size.height-([UIApplication sharedApplication].statusBarFrame.size.height+44)) configuration:configuration];
_webView.UIDelegate = self;
_webView.navigationDelegate = self;
_webView.contentMode = UIViewContentModeScaleAspectFit;
_webView.scrollView.showsHorizontalScrollIndicator = NO;
_webView.scrollView.showsVerticalScrollIndicator = NO;
_webView.allowsBackForwardNavigationGestures = YES;
_webView.allowsLinkPreview = NO;
}
return _webView;
}
- (UIProgressView *)processView{
if(!_processView){
_processView = [[UIProgressView alloc] initWithFrame:CGRectMake(0, ([UIApplication sharedApplication].statusBarFrame.size.height+44)+0.5, [[UIScreen mainScreen] bounds].size.width, 1)];
_processView.progressTintColor = [UIColor colorWithRed:19/255.0 green:204/255.0 blue:12/255.0 alpha:1.0];
_processView.trackTintColor = [UIColor whiteColor];
}
return _processView;
}
@end