iOS网络—UIWebView、WKWebView使用详解 - 简书
iOS网络—UIWebView、WKWebView使用详解
一、整体介绍
UIWebView自iOS2就有，WKWebView从iOS8才有，毫无疑问WKWebView将逐步取代笨重的UIWebView。通过简单的测试即可发现UIWebView占用过多内存，且内存峰值更是夸张。WKWebView网页加载速度也有提升，但是并不像内存那样提升那么多。下面列举一些其它的优势：
更多的支持HTML5的特性
官方宣称的高达60fps的滚动刷新率以及内置手势
Safari相同的JavaScript引擎
将UIWebViewDelegate与UIWebView拆分成了14类与3个协议()
另外用的比较多的，增加加载进度属性：estimatedProgress
二、UIWebView使用说明
1 举例：简单的使用
UIWebView使用非常简单，可以分为三步，也是最简单的用法，显示网页
- (void)simpleExampleTest {
// 1.创建webview，并设置大小，"20"为状态栏高度
UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height - 20)];
// 2.创建请求
NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"/mddblog/"]];
// 3.加载网页
[webView loadRequest:request];
// 最后将webView添加到界面
[self.view addSubview:webView];
2 一些实用函数
加载函数。
- (void)loadRequest:(NSURLRequest *)
- (void)loadHTMLString:(NSString *)string baseURL:(nullable NSURL *)baseURL;
- (void)loadData:(NSData *)data MIMEType:(NSString *)MIMEType textEncodingName:(NSString *)textEncodingName baseURL:(NSURL *)baseURL;
UIWebView不仅可以加载HTML页面，还支持pdf、word、txt、各种图片等等的显示。下面以加载mac桌面上的png图片：/Users/coohua/Desktop/bigIcon.png为例
// 1.获取url
NSURL *url = [NSURL fileURLWithPath:@"/Users/coohua/Desktop/bigIcon.png"];
// 2.创建请求
NSURLRequest *request=[NSURLRequest requestWithURL:url];
// 3.加载请求
[self.webView loadRequest:request];
网页导航刷新有关函数
// 停止加载
- (void)stopL
// 后退函数
- (void)goB
// 前进函数
- (void)goF
// 是否可以后退
@property (nonatomic, readonly, getter=canGoBack) BOOL canGoB
// 是否可以向前
@property (nonatomic, readonly, getter=canGoForward) BOOL canGoF
// 是否正在加载
@property (nonatomic, readonly, getter=isLoading) BOOL
3 代理协议使用：UIWebViewDelegate
一共有四个方法
/// 是否允许加载网页，也可获取js要打开的url，通过截取此url可与js交互
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
NSString *urlString = [[request URL] absoluteString];
urlString = [urlString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSArray *urlComps = [urlString componentsSeparatedByString:@"://"];
NSLog(@"urlString=%@---urlComps=%@",urlString,urlComps);
return YES;
/// 开始加载网页
- (void)webViewDidStartLoad:(UIWebView *)webView {
NSURLRequest *request = webView.
NSLog(@"webViewDidStartLoad-url=%@--%@",[request URL],[request HTTPBody]);
/// 网页加载完成
- (void)webViewDidFinishLoad:(UIWebView *)webView {
NSURLRequest *request = webView.
NSURL *url = [request URL];
if ([url.path isEqualToString:@"/normal.html"]) {
NSLog(@"isEqualToString");
NSLog(@"webViewDidFinishLoad-url=%@--%@",[request URL],[request HTTPBody]);
NSLog(@"%@",[self.webView stringByEvaluatingJavaScriptFromString:@"document.title"]);
/// 网页加载错误
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
NSURLRequest *request = webView.
NSLog(@"didFailLoadWithError-url=%@--%@",[request URL],[request HTTPBody]);
4 与js交互
主要有两方面：js执行OC代码、oc调取写好的js代码
js执行OC代码：js是不能执行oc代码的，但是可以变相的执行，js可以将要执行的操作封装到网络请求里面，然后oc拦截这个请求，获取url里面的字符串解析即可，这里用到代理协议的- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType函数。
oc调取写好的js代码：这里用到UIwebview的一个方法。示例代码一个是网页定位，一个是获取网页title：
// 实现自动定位js代码, htmlLocationID为定位的位置(由js开发人员给出)，实现自动定位代码，应该在网页加载完成之后再调用
NSString *javascriptStr = [NSString stringWithFormat:@"window.location.href = '#%@'",htmlLocationID];
// webview执行代码
[self.webView stringByEvaluatingJavaScriptFromString:javascriptStr];
// 获取网页的title
NSString *title = [self.webView stringByEvaluatingJavaScriptFromString:@"document.title"]
与js交互的实例
很多时候，我们要对网页做一些编辑，比如加载一个网页后，个别原因，我们不想显示新闻的来源，如下图的新闻来源“新华网”，网页的链接如下：http://op./mcms/h5/default/detail?id=NEW6200&refer=(可能已经失效)
火狐浏览器中查看
那我们就可以使用js代码将这个标签去掉，且只留下时间。js代码的编写，根据火狐浏览器查看它的标签名称，然后做处理，如上图，具体代码如下：
- (void)deleteNewsSource {
// 1.去掉页面标题
NSMutableString *str = [NSMutableString string];
// 去掉导航页，如果想把“腾讯新闻”导航栏一并去掉，就打开注释
[str appendString:@"document.getElementsByClassName('g-header')[0].style.display = 'none';"];
[str appendString:@"if(document.getElementsByClassName('g-wrapper-author')[0].innerHTML.indexOf(' ') == -1){document.getElementsByClassName('g-wrapper-author')[0].innerHTML = document.getElementsByClassName('g-wrapper-author')[0].innerHTML}else{document.getElementsByClassName('g-wrapper-author')[0].innerHTML = document.getElementsByClassName('g-wrapper-author')[0].innerHTML.split(' ')[1];}"];
// 执行js代码
[_webView stringByEvaluatingJavaScriptFromString:str];
代码执行的时机，一般情况下是等待网页加载完成- (void)webViewDidFinishLoad:(UIWebView *)webView里面执行，比较合理，但是有延迟，我们会发现刚开始有来源，然后突然又没有了，即js代码执行有延迟。
这样的话，我们可以在- (void)webViewDidStartLoad:(UIWebView *)webView网页开始加载里面开启一个定时器，比如定时0.2秒（根据需要自己设定），在定时器里面不停的调用- (void)deleteNewsSource方法即可解决。然后在- (void)webViewDidFinishLoad:(UIWebView *)webView里面关掉定时器。另外定时器容易引起循环引用，一定要注意释放。比如可以在viewDidDisappear方法里释放定时器。。。
- (void)webViewDidStartLoad:(UIWebView *)webView {
// 1.去掉页面来源标签，时间根据需要自己设置，定时器在这里开启具有一定危险性
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(deleteNewsSource) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSDefaultRunLoopMode];
self.timer =
三、WKWebView使用说明
1 简单使用
与UIWebview一样，仅需三步:
- (void)simpleExampleTest {
// 1.创建webview，并设置大小，"20"为状态栏高度
WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height - 20)];
// 2.创建请求
NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"/mddblog/"]];
// 3.加载网页
[webView loadRequest:request];
// 最后将webView添加到界面
[self.view addSubview:webView];
2 一些实用函数
加载网页函数相比UIWebview，WKWebView也支持各种文件格式，并新增了loadFileURL函数，顾名思义加载本地文件。
/// 模拟器调试加载mac本地文件
- (void)loadLocalFile {
// 1.创建webview，并设置大小，"20"为状态栏高度
WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height - 20)];
// 2.创建url
userName：电脑用户名
NSURL *url = [NSURL fileURLWithPath:@"/Users/userName/Desktop/bigIcon.png"];
// 3.加载文件
[webView loadFileURL:url allowingReadAccessToURL:url];
// 最后将webView添加到界面
[self.view addSubview:webView];
/// 其它三个加载函数
- (WKNavigation *)loadRequest:(NSURLRequest *)
- (WKNavigation *)loadHTMLString:(NSString *)string baseURL:(nullable NSURL *)baseURL;
- (WKNavigation *)loadData:(NSData *)data MIMEType:(NSString *)MIMEType characterEncodingName:(NSString *)characterEncodingName baseURL:(NSURL *)baseURL;
网页导航刷新相关函数和UIWebview几乎一样，不同的是有返回值，WKNavigation(已更新)，另外增加了函数reloadFromOrigin和goToBackForwardListItem。
reloadFromOrigin会比较网络数据是否有变化，没有变化则使用缓存，否则从新请求。
goToBackForwardListItem：比向前向后更强大，可以跳转到某个指定历史页面
@property (nonatomic, readonly) BOOL canGoB
@property (nonatomic, readonly) BOOL canGoF
- (WKNavigation *)goB
- (WKNavigation *)goF
- (WKNavigation *)
- (WKNavigation *)reloadFromO // 增加的函数
- (WKNavigation *)goToBackForwardListItem:(WKBackForwardListItem *) // 增加的函数
- (void)stopL
一些常用属性
allowsBackForwardNavigationGestures：BOOL类型，是否允许左右划手势导航，默认不允许
estimatedProgress：加载进度，取值范围0~1
title：页面title
.scrollView.scrollEnabled：是否允许上下滚动，默认允许
backForwardList：WKBackForwardList类型，访问历史列表，可以通过前进后退按钮访问，或者通过goToBackForwardListItem函数跳到指定页面
3 代理协议使用
一共有三个代理协议：
WKNavigationDelegate：最常用，和UIWebViewDelegate功能类似，追踪加载过程，有是否允许加载、开始加载、加载完成、加载失败。下面会对函数做简单的说明，并用数字标出调用的先后次序：1-2-3-4-5
三个是否允许加载函数：
/// 接收到服务器跳转请求之后调用 (服务器端redirect)，不一定调用
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)
/// 3 在收到服务器的响应头，根据response相关信息，决定是否跳转。decisionHandler必须调用，来决定是否跳转，参数WKNavigationActionPolicyCancel取消跳转，WKNavigationActionPolicyAllow允许跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionH
/// 1 在发送请求之前，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionH
追踪加载过程函数:
/// 2 页面开始加载
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)
/// 4 开始获取到网页内容时返回
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)
/// 5 页面加载完成之后调用
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)
/// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)
WKScriptMessageHandler：必须实现的函数，是APP与js交互，提供从网页中收消息的回调方法，即js可以调用app的方法
当然需要对webview做一些特殊处理，创建的时候做一些配置：- initWithFrame:configuration:,configuration为WKWebViewConfiguration类型，具体不再详述，代理方法如下：
/// message: 收到的脚本信息.
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)
当然，app也可以执行js代码，如下：
/// jsStr为要执行的js代码，字符串形式
[webView evaluateJavaScript:jsStr completionHandler:^(id item, NSError * _Nullable error) {
// 执行结果回调
WKUIDelegate：UI界面相关，原生控件支持，三种提示框：输入、确认、警告。首先将web提示框拦截然后再做处理。
/// 创建一个新的WebView
- (WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowF
/// 输入框
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * __nullable result))completionH
/// 确认框
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionH
/// 警告框
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionH
四、示例代码
代码可以实现一般网络显示，加载本地文件(pdf、word、txt、图片等等)
搜索框搜索界面，搜索框输入file://则加载本地文件，http://则加载网络内容，如果两者都不是则搜索输入的关键字。
下部网络导航，后退、前进、刷新、用Safari打开链接四个按钮
/// 控件高度
#define kSearchBarH
#define kBottomViewH 44
/// 屏幕大小尺寸
#define kScreenWidth
[UIScreen mainScreen].bounds.size.width
#define kScreenHeight [UIScreen mainScreen].bounds.size.height
#import "ViewController.h"
#import &WebKit/WebKit.h&
@interface ViewController () &UISearchBarDelegate, WKNavigationDelegate&
@property (nonatomic, strong) UISearchBar *searchB
/// 网页控制导航栏
@property (weak, nonatomic) UIView *bottomV
@property (nonatomic, strong) WKWebView *wkWebV
@property (weak, nonatomic) UIButton *backB
@property (weak, nonatomic) UIButton *forwardB
@property (weak, nonatomic) UIButton *reloadB
@property (weak, nonatomic) UIButton *browserB
@property (weak, nonatomic) NSString *baseURLS
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self simpleExampleTest];
[self addSubViews];
[self refreshBottomButtonState];
[self.wkWebView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"/mddblog/"]]];
- (void)simpleExampleTest {
// 1.创建webview，并设置大小，"20"为状态栏高度
WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height - 20)];
// 2.创建请求
NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"/mddblog/"]];
// 3.加载网页
[webView loadRequest:request];
[webView loadFileURL:[NSURL fileURLWithPath:@"/Users/userName/Desktop/bigIcon.png"] allowingReadAccessToURL:[NSURL fileURLWithPath:@"/Users/userName/Desktop/bigIcon.png"]];
// 最后将webView添加到界面
[self.view addSubview:webView];
/// 模拟器加载mac本地文件
- (void)loadLocalFile {
// 1.创建webview，并设置大小，"20"为状态栏高度
WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height - 20)];
// 2.创建url
userName：电脑用户名
NSURL *url = [NSURL fileURLWithPath:@"/Users/userName/Desktop/bigIcon.png"];
// 3.加载文件
[webView loadFileURL:url allowingReadAccessToURL:url];
// 最后将webView添加到界面
[self.view addSubview:webView];
- (void)addSubViews {
[self addBottomViewButtons];
[self.view addSubview:self.searchBar];
[self.view addSubview:self.wkWebView];
- (void)addBottomViewButtons {
// 记录按钮个数
int count = 0;
// 添加按钮
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:@"后退" forState:UIControlStateNormal];
[button setTitleColor:[UIColor colorWithRed:249 / 255.0 green:102 / 255.0 blue:129 / 255.0 alpha:1.0] forState:UIControlStateNormal];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateDisabled];
[button.titleLabel setFont:[UIFont systemFontOfSize:15]];
button.tag = ++
// 标记按钮
[button addTarget:self action:@selector(onBottomButtonsClicled:) forControlEvents:UIControlEventTouchUpInside];
[self.bottomView addSubview:button];
self.backBtn =
button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:@"前进" forState:UIControlStateNormal];
[button setTitleColor:[UIColor colorWithRed:249 / 255.0 green:102 / 255.0 blue:129 / 255.0 alpha:1.0] forState:UIControlStateNormal];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateDisabled];
[button.titleLabel setFont:[UIFont systemFontOfSize:15]];
button.tag = ++
[button addTarget:self action:@selector(onBottomButtonsClicled:) forControlEvents:UIControlEventTouchUpInside];
[self.bottomView addSubview:button];
self.forwardBtn =
button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:@"重新加载" forState:UIControlStateNormal];
[button setTitleColor:[UIColor colorWithRed:249 / 255.0 green:102 / 255.0 blue:129 / 255.0 alpha:1.0] forState:UIControlStateNormal];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateDisabled];
[button.titleLabel setFont:[UIFont systemFontOfSize:15]];
button.tag = ++
[button addTarget:self action:@selector(onBottomButtonsClicled:) forControlEvents:UIControlEventTouchUpInside];
[self.bottomView addSubview:button];
self.reloadBtn =
button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:@"Safari" forState:UIControlStateNormal];
[button setTitleColor:[UIColor colorWithRed:249 / 255.0 green:102 / 255.0 blue:129 / 255.0 alpha:1.0] forState:UIControlStateNormal];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateDisabled];
[button.titleLabel setFont:[UIFont systemFontOfSize:15]];
button.tag = ++
[button addTarget:self action:@selector(onBottomButtonsClicled:) forControlEvents:UIControlEventTouchUpInside];
[self.bottomView addSubview:button];
self.browserBtn =
// 统一设置frame
[self setupBottomViewLayout];
- (void)setupBottomViewLayout
int count = 4;
CGFloat btnW = 80;
CGFloat btnH = 30;
CGFloat btnY = (self.bottomView.bounds.size.height - btnH) / 2;
// 按钮间间隙
CGFloat margin = (self.bottomView.bounds.size.width - btnW * count) /
CGFloat btnX = margin * 0.5;
self.backBtn.frame = CGRectMake(btnX, btnY, btnW, btnH);
btnX = self.backBtn.frame.origin.x + btnW +
self.forwardBtn.frame = CGRectMake(btnX, btnY, btnW, btnH);
btnX = self.forwardBtn.frame.origin.x + btnW +
self.reloadBtn.frame = CGRectMake(btnX, btnY, btnW, btnH);
btnX = self.reloadBtn.frame.origin.x + btnW +
self.browserBtn.frame = CGRectMake(btnX, btnY, btnW, btnH);
/// 刷新按钮是否允许点击
- (void)refreshBottomButtonState {
if ([self.wkWebView canGoBack]) {
self.backBtn.enabled = YES;
self.backBtn.enabled = NO;
if ([self.wkWebView canGoForward]) {
self.forwardBtn.enabled = YES;
self.forwardBtn.enabled = NO;
/// 按钮点击事件
- (void)onBottomButtonsClicled:(UIButton *)sender {
switch (sender.tag) {
[self.wkWebView goBack];
[self refreshBottomButtonState];
[self.wkWebView goForward];
[self refreshBottomButtonState];
[self.wkWebView reload];
[[UIApplication sharedApplication] openURL:self.wkWebView.URL];
#pragma mark - WKWebView WKNavigationDelegate 相关
/// 是否允许加载网页 在发送请求之前，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
NSString *urlString = [[navigationAction.request URL] absoluteString];
urlString = [urlString stringByRemovingPercentEncoding];
NSLog(@"urlString=%@",urlString);
// 用://截取字符串
NSArray *urlComps = [urlString componentsSeparatedByString:@"://"];
if ([urlComps count]) {
// 获取协议头
NSString *protocolHead = [urlComps objectAtIndex:0];
NSLog(@"protocolHead=%@",protocolHead);
decisionHandler(WKNavigationActionPolicyAllow);
#pragma mark - searchBar代理方法
/// 点击搜索按钮
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
// 创建url
NSURL *url =
NSString *urlStr = searchBar.
// 如果file://则为打开bundle本地文件，http则为网站，否则只是一般搜索关键字
if([urlStr hasPrefix:@"file://"]){
NSRange range = [urlStr rangeOfString:@"file://"];
NSString *fileName = [urlStr substringFromIndex:range.length];
url = [[NSBundle mainBundle] URLForResource:fileName withExtension:nil];
// 如果是模拟器加载电脑上的文件，则用下面的代码
url = [NSURL fileURLWithPath:fileName];
}else if(urlStr.length&0){
if ([urlStr hasPrefix:@"http://"]) {
url=[NSURL URLWithString:urlStr];
urlStr=[NSString stringWithFormat:@"/s?wd=%@",urlStr];
urlStr = [urlStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
url=[NSURL URLWithString:urlStr];
NSURLRequest *request=[NSURLRequest requestWithURL:url];
// 加载请求页面
[self.wkWebView loadRequest:request];
#pragma mark - 懒加载
- (UIView *)bottomView {
if (_bottomView == nil) {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, kScreenHeight - kBottomViewH, kScreenWidth, kBottomViewH)];
view.backgroundColor = [UIColor colorWithRed:230/255.0 green:230/255.0 blue:230/255.0 alpha:1];
[self.view addSubview:view];
_bottomView =
return _bottomV
- (UISearchBar *)searchBar {
if (_searchBar == nil) {
UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 20, kScreenWidth, kSearchBarH)];
searchBar.delegate =
searchBar.text = @"/mddblog/";
_searchBar = searchB
return _searchB
- (WKWebView *)wkWebView {
if (_wkWebView == nil) {
WKWebView *webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 20 + kSearchBarH, kScreenWidth, kScreenHeight - 20 - kSearchBarH - kBottomViewH)];
webView.navigationDelegate =
webView.scrollView.scrollEnabled = NO;
webView.backgroundColor = [UIColor colorWithPatternImage:self.image];
// 允许左右划手势导航，默认允许
webView.allowsBackForwardNavigationGestures = YES;
_wkWebView = webV
return _wkWebV
五、github代码下载
自动化专业，从事嵌入式、Linux开发，后转行做iOS开发至今。qq: