[英]Load local javascript in webview?
我正在快速制作帶有我自己的廣告的移動瀏覽器,我想運行腳本。我已經注入了 javascript 本地文件,但它在其他窗口中打開並覆蓋了 webview 內容。是否可以在 webview 頁面中運行 javascript 代碼? 不在其他窗口,只在有頁面內容的頁面中。希望你能明白
WKWebView
進行 javascript 方法調用:步驟 1.為 webkit 導入類
Obj-C: #import <WebKit/WebKit.h>
Swift: import WebKit
步驟 2.創建一個WKWebView
實例(遺憾的是它只能以編程方式完成)
Obj-C @property (strong, nonatomic) WKWebView *wkWebView;
Swift var wkWebView: WKWebView? = WKWebView()
var wkWebView: WKWebView? = WKWebView()
步驟 3.然后在viewDidLoad
對象-C:
WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
NSString *scriptSourceCode = @"your javascript code here";
WKUserScript *script = [[WKUserScript alloc] initWithSource:source injectionTime:WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly:YES];
WKUserContentController *controller = [[WKUserContentController alloc] init];
[controller addUserScript:script];
configuration.userContentController = controller;
_wkWebView = [[WKWebView alloc] initWithFrame:self.view.frame configuration:configuration];
[self.view addSubview:_wkWebView];
迅速:
let configuration = WKWebViewConfiguration()
let controller = WKUserContentController()
let scriptSourceCode = "your javascript code here"
let script = WKUserScript(source: scriptSourceCode, injectionTime: WKUserScriptInjectionTime.AtDocumentStart, forMainFrameOnly: true)
controller.addUserScript(script)
configuration.userContentController = controller
self.wkWebView = WKWebView(frame: self.view.frame, configuration: configuration)
self.view.addSubview(self.wkWebView!)
步驟 4在wkWebView
加載 HTML 字符串(或 loadRequest):
對象-C:
[_wkWebView loadHTMLString:_desiredHTML baseURL:[[NSBundle mainBundle] bundleURL]];
迅速:
self.wkWebView?.loadHTMLString(_desiredHTML, baseURL: NSBundle.mainBundle().bundleURL)
第 5 步。 調用WKWebView
包含的 javascript 中存在的方法
對象-C:
NSString *callMethod = [NSString stringWithFormat:@"existingMethodWithParam(%@)", stringParam];
[_wkWebView evaluateJavaScript:callMethod
completionHandler:^(id obj, NSError *error) {
if (error)
{
NSLog(@"ERROR evaluating JavaScript - %@", error);
}
else
{
NSLog(@"Returned value - %@", obj); //if the javascript method has a return type
}
}];
迅速:
let callMethod = String(format: "existingMethodWithParam(%@)", stringParam)
[self.wkWebView?.evaluateJavaScript(callMethod, completionHandler: { (obj, error) -> Void in
println(obj)
println(error)
})]
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