很久沒有寫博客了，這兩天在使用WKWebView，想記錄一下。
WKWebView和UIWebView我就不比較了，網上很多大牛都做了詳細分析。
一、初始化WKWebView
WKWebViewConfiguration * config = [[WKWebViewConfiguration alloc] init];
config.preferences = [WKPreferences new];
config.preferences.minimumFontSize = 50;
[config.userContentController addScriptMessageHandler:self name:@"StartClick"];
WKWebView * webView = [[WKWebView alloc] initWithFrame:self.view.frame configuration:config];
//NSURL * testUrl = [[NSBundle mainBundle] URLForResource:@"index.html" withExtension:nil];
NSURLRequest * request = [NSURLRequest requestWithURL:self.nextUrl];
[webView loadRequest:request];
webView.UIDelegate = self;
webView.navigationDelegate = self;
webView.scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentAutomatic;
[self.view addSubview:webView];
- 在
config.preferences里面可以設置一些偏好信息，比如字號，注入交互等。 - 初始化WKWebView的時候，使用
[[NSBundle mainBundle] URLForResource:@"xxx.html" withExtension:nil];可以加載本地的html文件。
二、導航代理WKNavigationDelegate
- (void)webView:(WKWebView *)webView didCommitNavigation:(WKNavigation *)navigation
{
//內容開始返回
}
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation
{
//內容加載結束
//獲取手機當前連接的Wi-Fi
NSString * ssid = [self SSID];
//調用js方法，注入數據
NSString * js = [NSString stringWithFormat:@"setWifiName('%@')",ssid];
[webView evaluateJavaScript:js completionHandler:^(id _Nullable response, NSError * _Nullable error) {
if (error) {
NSLog(@"%@",[error localizedDescription]);
}else{
NSLog(@"注入成功!");
}
}];
}
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
//是否跳轉到鏈接頁面
NSString * url = navigationAction.request.URL.absoluteString;
NSURL * desUrl = [[NSBundle mainBundle] URLForResource:@"CustomerPage.html" withExtension:nil];
NSString * desUrlStr = [NSString stringWithFormat:@"%@",[[NSBundle mainBundle] URLForResource:@"CustomerPage.html" withExtension:nil]];
if ([url isEqualToString:desUrlStr]) {
//跳轉
CustomerViewController * customerVC = [[CustomerViewController alloc] init];
customerVC.nextUrl = desUrl;
[self.navigationController pushViewController:customerVC animated:YES];
decisionHandler(WKNavigationActionPolicyCancel);
}else{
decisionHandler(WKNavigationActionPolicyAllow);
}
}
三、UI代理WKUIDelegate
- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler
{
//彈出js的警告框
UIAlertController * alertController = [UIAlertController alertControllerWithTitle:@"警告" message:message preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction * actionOne = [UIAlertAction actionWithTitle:@"ok" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
NSLog(@"actionOne");
}];
[alertController addAction:actionOne];
[self presentViewController:alertController animated:YES completion:nil];
completionHandler();
}
- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL))completionHandler
{
//彈出選擇框
NSLog(@"%s",__func__);
completionHandler(YES);
}
- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * _Nullable))completionHandler
{
//彈出輸入框
NSLog(@"%s",__func__);
completionHandler(defaultText);
}
四、JS交互WKScriptMessageHandler
- (void)userContentController:(nonnull WKUserContentController *)userContentController didReceiveScriptMessage:(nonnull WKScriptMessage *)message
{
//[config.userContentController addScriptMessageHandler:self name:@"StartClick"];
//message.name是定義的方法，例如StartClick，message.body是傳的值
//使用此方法，需要在js代碼里面加入window.webkit.messageHandlers.<name>.postMessage(<messageBody>)
//例如:window.webkit.messageHandlers.StartClick.postMessage({ssid:ss,password:pwd,otherInfo:other,versionID:version});
if ([message.name isEqualToString:@"StartClick"]) {
NSString * other = message.body[@"otherInfo"];
NSString * pwd = message.body[@"password"];
NSString * ssid = message.body[@"ssid"];
NSInteger version = [message.body[@"versionID"] integerValue];
}
}
