包含结目的wwWwww.kkkk7777.comwkCoM页面,老是栏截www.kkkk7777.comwk还出问题

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<pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>- (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:@"http://www.cnblogs.com/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。<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>- (void)loadRequest:(NSURLRequest *)
- (void)loadHTMLString:(NSString *)string baseURL:(nullable NSURL *)baseURL;
- (void)loadData:(NSData *)data MIMEType:(NSString *)MIMEType textEncodingName:(NSString *)textEncodingName baseURL:(NSURL *)baseURL;de style="margin: 0 padding: 0"
&UIWebViewde&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:de style="margin: 0 padding: 0"
&/Users/coohua/Desktop/bigIcon.pngde&为例<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>// 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<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
// 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) BOOL3 代理协议使用:UIWebViewDelegate一共有四个方法<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>/// 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de style="margin: 0 padding: 0"
&- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationTypede&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:<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>// 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"]三、WKWebView使用说明1 简单使用与UIWebview一样,仅需三步:记住导入(#import &WebKit/WebKit.h&)<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>- (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:@"http://www.cnblogs.com/mddblog/"]];
// 3.加载网页
[webView loadRequest:request];
// 最后将webView添加到界面
[self.view addSubview:webView];
}&de style="margin: 0 padding: 0"
&&de&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de style="margin: 0 padding: 0"
&loadFileURLde&函数,顾名思义加载本地文件。<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>/// 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];
}&<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>/// 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de style="margin: 0 padding: 0"
&reloadFromOriginde&和de style="margin: 0 padding: 0"
&goToBackForwardListItemde&。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<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>@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&de style="margin: 0 padding: 0"
&&de&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0~1title: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:<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>/// 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&de style="margin: 0 padding: 0"
&&de&追踪加载过程函数:<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>/// 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<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>/// message: 收到的脚本信息.
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)&de style="margin: 0 padding: 0"
&&de&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。<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>/// 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de style="margin: 0 padding: 0"
&file://de&则加载本地文件,de style="margin: 0 padding: 0"
&http://de&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打开链接四个按钮主界面——简述主页<div style="margin: 5px 0 padding: 5 border: 1px solid rgb(204, 204, 204); overflow: font-family: 'Courier New' !imp font-size: 12px !imp background-color: rgb(245, 245, 245);"
><pre style="margin-top: 0 margin-bottom: 0 padding: 0 white-space: pre- word-wrap: break- font-family: 'Courier New' !imp"
>/// 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:@"http://www.cnblogs.com/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:@"http://www.cnblogs.com/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:@"http://www.baidu.com/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 = @"http://www.cnblogs.com/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
@end&&五、UIWebView 和 WKWebView的性能分析iOS 8 推出 WKWebView 以及相关特性,告诉开发者提高多么多么大的性能,实测告诉你WKWebView的性能有多好!为了验证,我在项目中的分别 使用UIWebView 和 WKWebView 测试,来回加载十多个网页 产生的内存状况如下:&UIWebView&&WKWebView&对比发现 WKWebview 这货 在persistent 常驻内存 使用得少多了,想想看,一个app去哪儿省下几十M的内存,再加上用户量分布iOS 9 60%iOS 8 30%iOS 7 6%左右所以我建议能换WKWebview 就换吧,省下一大块内存减少不必要的异常bug。&iOSH5性能监控技术角度分析性能数据了解分析移动端H5性能数据,首先我们说说是哪些性能数据。白屏时间,白屏时间无论安卓还是iOS在加载网页的时候都会存在的问题,也是目前无法解决的;页面耗时,页面耗时指的是开始加载这个网页到整个页面load完成即渲染完成的时间;加载链接的一些性能数据,重定向时间,DNS解析时间,TCP链接时间,request请求时间,response响应时间,dom节点解析时间,page渲染时间,同时我们还需要抓取资源时序数据,什么是资源时序数据呢?每个网页是有很多个资源组成的,有.js、.png、.css、.script等等,我们就需要将这些每个资源链接的耗时拿到,是什么类型的资源,完整链接;对于客户来说有了这些还不够,还需要JS错误,页面的ajax请求。JS错误获取的当然是堆栈信息和错误类型。ajax请求一般是获取三个时间,响应时间,ajax下载时间,ajax回调时间。&上面分析的是能够获取到移动端H5的性能数据,这些数据怎么得到就是接下来要讲的了。数据获取是需要js来做的,都知道移动端是通过webView来加载网页的,js里面能通过performance这个接口来从webView内部api获取上面的那些数据,js获取的数据然后发给OC;那JS怎么样才能拿到这些数据呢,这就是最关键的,OC代码如何写才能让JS获取数据。代码编写有两种方法可以得到数据,先介绍用NSURLProtocol这个类获取数据。iOS的UIWebView加载网页的时候会走进NSURLProtocol这个类,所以我们就需要在这个类里面作文章了,我们先用UIWebView加载一个链接,例如百度等等,然后创建一个继承NSURLProtocol的类。继承NSURLProtocolNSURLProtocol里面有很多方法,就不一一介绍了,有一个startLoading的方法,我们在这个方法里面用NSURLConnection发送一个请求,设置代理,请求的request就是加载网页的request,因为NSURLProtocol有一个NSURLRequest的属性。- (instancetype)initWithRequest:(NSURLRequest*)request delegate:(id)delegate startImmediately:(BOOL)startImmediately这个就是请求的方法。发送请求- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data通过NSURLConnection设置代理,就需要写出代理方法,在其中一个代理方法里面能获得网页的代码,这就是我们最关键的地方,就是上面这个方法,将data用utf-8转码就会得到代码。插入js代码的方法得到网页的代码有什么用呢?熟悉网页端代码的都知道,网页端的代码都是由很多标签组成,我们先找到&head&这个标签,在下面插入一个&script&标签,里面放入js代码,这个js代码就是用来获取上面介绍的性能数据。- (void)URLProtocol:(NSURLProtocol *)protocol didLoadData:(NSData *)da上面会用到很多这个方法,为什么要用这个呢,因为你注入了新的代码,你需要将这个新的网页代码用这个方法加载一下,不然网页会加载不出来的。最后只需要将MonitorURLProtocol在appDelegate里面注册一下就可以了。注册创建的类以上是通过NSURLProtocol这个类注入获取数据的代码,将JS代码注入后就需要JS将数据发送给我们,可以通过交互这些方式,接下来我就介绍一种直白的交互,大多数的交互也是这么做的,只不过封装了,考虑的情况更多,我就只是根据实际情况来做了。OC与JS交互获取数据交互都会有一个标识,OC传一个标识给JS,JS通过标识判断,发送给你想要的数据。我首先是通过运行时动态加载的方法将加载链接的三个方法给hook,进入同一个我定义的方法,然后在这个方法里面传标识给JS。hook数据获取将标识和block作为键值对存起来,然后将JS将数据用url的形式发过来,我们取出来,匹配一下对应相应的标识,然后用block回调相应的数据,相应的代码这里就不贴了,最后我会给github上代码的链接。接受url就是用UIWebView的代理方法。- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationT{& [WebViewTracker webView:webView withUrl:request.URL];& return YES;}我们还可以在didFinishLoad里面手动调用JS代码来获取获取数据,和NSURLProtocol结合起来用,各有各的优缺点,一个是在顶部注入代码,一个是在尾部调用代码,都是会丢失一部分数据,所以最好的办法就是结合起来用。以上是自己获取这些数据,如果是做成SDK监控APP获取这些数据,就不一样了,需要去hookUIWebView的代理方法,hook静态库的方法和普通的运行时加载是不一样的,这个我可以在以后的文章里面介绍。WKWebViewWKWebView是iOS8.0以后出来的,目前使用的人还不是很多,但是这个比UIWebView性能方面好很多,从内核到内存优化等等,但是由于还有iOS7以下的用户,所以面使用的人不多,但是这个是趋势。WKWebView获取上面的性能数据是一模一样的,不同的是WKWebView不会走进NSURLProtocol,所以实在didFinishLoad里面手动调用,这里就不详细说了,直接给代码链接github代码链接如下:https://github.com/LonelyWise/WebViewMonitor
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