#import <UIKit/UIKit.h>
@interface WKWebViewController : UIViewController
@end
#import "WKWebViewController.h"
#import <WebKit/WebKit.h>
#import "WKDelegateController.h"
@interface WKWebViewController ()<WKDelegate,WKScriptMessageHandler,WKUIDelegate,WKNavigationDelegate>
@property(strong,nonatomic)WKWebView* webView;
@property(strong,nonatomic)WKUserContentController* userContentController;
@end
@implementation WKWebViewController
-(instancetype)init
{
if(self = [super init])
{
}
return self;
}
-(void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
[_webView removeObserver:self forKeyPath:@"loading" context:nil];//移除kvo
[_webView removeObserver:self forKeyPath:@"title" context:nil];
[_webView removeObserver:self forKeyPath:@"estimatedProgress" context:nil];
}
-(void)addKVO
{
[self.webView addObserver:self
forKeyPath:@"loading"
options:NSKeyValueObservingOptionNew
context:nil];
[self.webView addObserver:self
forKeyPath:@"title"
options:NSKeyValueObservingOptionNew
context:nil];
[self.webView addObserver:self
forKeyPath:@"estimatedProgress"
options:NSKeyValueObservingOptionNew
context:nil];
}
- (void)observeValueForKeyPath:(NSString *)keyPath
ofObject:(id)object
change:(NSDictionary<NSString *,id> *)change
context:(void *)context
{
if ([keyPath isEqualToString:@"loading"])
{
NSLog(@"loading");
} else if ([keyPath isEqualToString:@"title"])
{
self.title = self.webView.title;
} else if ([keyPath isEqualToString:@"estimatedProgress"])
{
NSLog(@"progress: %f", self.webView.estimatedProgress);
}
// 加载完成
if (!self.webView.loading)
{
}
}
- (void)viewDidLoad {
[super viewDidLoad];
//初始化一个WKWebViewConfiguration对象
WKWebViewConfiguration *config = [WKWebViewConfiguration new];
//初始化偏好设置属性：preferences
config.preferences = [WKPreferences new];
//The minimum font size in points default is 0;
config.preferences.minimumFontSize = 10;
//是否支持JavaScript
config.preferences.javaScriptEnabled = YES;
//不通过用户交互，是否可以打开窗口
config.preferences.javaScriptCanOpenWindowsAutomatically = NO;
self.userContentController =[[WKUserContentController alloc]init];
config.userContentController = self.userContentController;
//注册方法
WKDelegateController * delegateController = [[WKDelegateController alloc]init];
delegateController.delegate = self;
[self.userContentController addScriptMessageHandler:delegateController name:@"sayhello"];
self.webView = [[WKWebView alloc]initWithFrame:self.view.frame configuration:config];
self.webView.UIDelegate = self;
self.webView.navigationDelegate = self;
// [self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://www.baidu.com"]]];
[self.view addSubview:self.webView];
NSString* path = [[NSBundle mainBundle] pathForResource:@"b" ofType:@"html"];
NSURL* url = [NSURL fileURLWithPath:path];
NSURLRequest* request = [NSURLRequest requestWithURL:url] ;
[self.webView loadRequest:request];
[self addKVO];
//[request addValue:[self readCurrentCookieWithDomain:@"http://www.test.com/"] forHTTPHeaderField:@"Cookie"];
}
#pragma mark --WKScriptMessageHandler
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message
{
if ([message.name isEqualToString:@"sayhello"]) {
// 打印所传过来的参数，只支持NSNumber, NSString, NSDate, NSArray,
// NSDictionary, and NSNull类型
//do something
NSLog(@"%@", message.body);
}
}
- (NSString *)readCurrentCookieWithDomain:(NSString *)domainStr{
NSHTTPCookieStorage*cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSMutableString * cookieString = [[NSMutableString alloc]init];
for (NSHTTPCookie*cookie in [cookieJar cookies]) {
[cookieString appendFormat:@"%@=%@;",cookie.name,cookie.value];
}
//删除最后一个“；”
[cookieString deleteCharactersInRange:NSMakeRange(cookieString.length - 1, 1)];
return cookieString;
}
#pragma mark ---WKUIDelegate
// 创建新的webview
// 可以指定配置对象、导航动作对象、window特性
- (nullable WKWebView *)webView:(WKWebView *)webView createWebViewWithConfiguration:(WKWebViewConfiguration *)configuration forNavigationAction:(WKNavigationAction *)navigationAction windowFeatures:(WKWindowFeatures *)windowFeatures
{
return self.webView;
}
// webview关闭时回调
- (void)webViewDidClose:(WKWebView *)webView NS_AVAILABLE(10_11, 9_0){
}
// 调用JS的alert()方法
-(void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler{
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"警告" message:@"调用alert提示框" preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler();
}]];
[self presentViewController:alert animated:YES completion:nil];
NSLog(@"alert message:%@",message);
}
// 调用JS的confirm()方法
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler
{
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"确认框" message:@"调用confirm提示框" preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler(YES);
}]];
[alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
completionHandler(NO);
}]];
[self presentViewController:alert animated:YES completion:NULL];
NSLog(@"confirm message:%@", message);
}
// 调用JS的prompt()方法
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * __nullable result))completionHandler{
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"输入框" message:@"调用输入框" preferredStyle:UIAlertControllerStyleAlert];
[alert addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
textField.textColor = [UIColor blackColor];
}];
[alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
completionHandler([[alert.textFields lastObject] text]);
}]];
[self presentViewController:alert animated:YES completion:NULL];
}
#pragma mark ---WKNavigationDelegate
//开始加载时调用
-(void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation{
}
//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 {
//取出cookie
// NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
// //js函数
// NSString *JSFuncString =
// @"function setCookie(name,value,expires)\
// {\
// var oDate=new Date();\
// oDate.setDate(oDate.getDate()+expires);\
// document.cookie=name+'='+value+';expires='+oDate+';path=/'\
// }\
// function getCookie(name)\
// {\
// var arr = document.cookie.match(new RegExp('(^| )'+name+'=({FNXX==XXFN}*)(;|$)'));\
// if(arr != null) return unescape(arr[2]); return null;\
// }\
// function delCookie(name)\
// {\
// var exp = new Date();\
// exp.setTime(exp.getTime() - 1);\
// var cval=getCookie(name);\
// if(cval!=null) document.cookie= name + '='+cval+';expires='+exp.toGMTString();\
// }";
//
// //拼凑js字符串
// NSMutableString *JSCookieString = JSFuncString.mutableCopy;
// for (NSHTTPCookie *cookie in cookieStorage.cookies) {
// NSString *excuteJSString = [NSString stringWithFormat:@"setCookie('%@', '%@', 1);", cookie.name, cookie.value];
// [JSCookieString appendString:excuteJSString];
// }
// //执行js
// [webView evaluateJavaScript:JSCookieString completionHandler:nil];
//
// //say()是JS方法名，completionHandler是异步回调block
// [self.webView evaluateJavaScript:@"say()" completionHandler:^(id _Nullable result, NSError * _Nullable error) {
// NSLog(@"%@",result);
// }];
}
// 页面加载失败时调用
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation
{
NSLog(@"didFailProvisionalNavigation");
}
// 接收到服务器跳转请求之后调用
- (void)webView:(WKWebView *)webView didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation{
NSLog(@"didReceiveServerRedirectForProvisionalNavigation");
}
// 在收到响应后，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler{
NSLog(@"decidePolicyForNavigationResponse");
decisionHandler( WKNavigationResponsePolicyAllow);
}
// 在发送请求之前，决定是否跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{
NSLog(@"decidePolicyForNavigationAction");
decisionHandler(WKNavigationActionPolicyAllow);
}
- (void)dealloc{
//这里需要注意，前面增加过的方法一定要remove掉。
[self.userContentController removeScriptMessageHandlerForName:@"sayhello"];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#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.
}
*/
@end
#import <UIKit/UIKit.h>
#import <WebKit/WebKit.h>
@protocol WKDelegate <NSObject>
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message;
@end
@interface WKDelegateController : UIViewController <WKScriptMessageHandler>
@property (weak , nonatomic) id<WKDelegate> delegate;
@end
#import "WKDelegateController.h"
@interface WKDelegateController ()
@end
@implementation WKDelegateController
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)userContentController:(WKUserContentController *)userContentController didReceiveScriptMessage:(WKScriptMessage *)message{
if ([self.delegate respondsToSelector:@selector(userContentController:didReceiveScriptMessage:)]) {
[self.delegate userContentController:userContentController didReceiveScriptMessage:message];
}
}
@end
js代码
<html>
<head>
<script>
function say()
{
//前端需要用 window.webkit.messageHandlers.注册的方法名.postMessage({body:传输的数据} 来给native发送消息
window.webkit.messageHandlers.sayhello.postMessage({body: 'hello world!'});
}
</script>
</head>
<body>
<h1>hello world</h1>
<button onclick="say()">say hello</button>
</body>
</html>
<html>
<head>
<title>iOS and Js</title>
<style type="text/css">
* {
font-size: 40px;
}
</style>
</head>
<body>
<div style="margin-top: 100px">
<h1>Test how to use objective-c call js</h1><br/>
<div><input type="button" value="call js alert" onclick="callJsAlert()"></div>
<br/>
<div><input type="button" value="Call js confirm" onclick="callJsConfirm()"></div><br/>
</div>
<br/>
<div>
<div><input type="button" value="Call Js prompt " onclick="callJsInput()"></div><br/>
<div>Click me here: <a href="http://www.baidu.com">Jump to Baidu</a></div>
</div>
<br/>
<div id="SwiftDiv">
<span id="jsParamFuncSpan" style="color: red; font-size: 50px;"></span>
</div>
<script type="text/javascript">
function callJsAlert() {
alert('Objective-C call js to show alert');
window.webkit.messageHandlers.AppModel.postMessage({body: 'call js alert in js'});
}
function callJsConfirm() {
if (confirm('confirm', 'Objective-C call js to show confirm')) {
document.getElementById('jsParamFuncSpan').innerHTML
= 'true';
} else {
document.getElementById('jsParamFuncSpan').innerHTML
= 'false';
}
// AppModel是我们所注入的对象
window.webkit.messageHandlers.AppModel.postMessage({body: 'call js confirm in js'});
}
function callJsInput() {
var response = prompt('Hello', 'Please input your name:');
document.getElementById('jsParamFuncSpan').innerHTML = response;
// AppModel是我们所注入的对象
window.webkit.messageHandlers.AppModel.postMessage({body: response});
}
</script>
</body>
</html>
