鸿蒙Next学习-webview原生与JS交互通信 - IT评测·应用市场-qidao123.com

<!DOCTYPE html>
<html>
<body>
<button type="button" onclick="callArkTS()">Click Me!</button>
<h1 id="text">这是一个测试信息，默认字体为黑色，调用runJavaScript方法后字体为绿色，调用runJavaScriptCodePassed方法后字体为红色</h1>
<script>
// 调用有参函数时实现。
var param = "param: JavaScript Hello World!";
function htmlTest(param) {
document.getElementById('text').style.color = 'green';
console.log(param);
}
// 调用无参函数时实现。
function htmlTest() {
document.getElementById('text').style.color = 'green';
}
// Click Me！触发前端页面callArkTS()函数执行JavaScript传递的代码。
function callArkTS() {
changeColor();
}
</script>
</body>
</html>

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// xxx.ets
import { webview } from '@kit.ArkWeb';
@Entry
@Component
struct WebComponent {
webviewController: webview.WebviewController = new webview.WebviewController();
aboutToAppear() {
// 配置Web开启调试模式
webview.WebviewController.setWebDebuggingAccess(true);
}
build() {
Column() {
Button('runJavaScript')
.onClick(() => {
// 前端页面函数无参时，将param删除。
this.webviewController.runJavaScript('htmlTest(param)');
})
Button('runJavaScriptCodePassed')
.onClick(() => {
// 传递runJavaScript侧代码方法。
this.webviewController.runJavaScript(`function changeColor(){document.getElementById('text').style.color = 'red'}`);
})
Web({ src: $rawfile('index.html'), controller: this.webviewController })
}
}
}

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// xxx.ets
import { webview } from '@kit.ArkWeb';
class testClass {
constructor() {
}
test(): string {
return 'ArkTS Hello World!';
}
}
@Entry
@Component
struct WebComponent {
webviewController: webview.WebviewController = new webview.WebviewController();
// 声明需要注册的对象
@State testObj: testClass = new testClass();
build() {
Column() {
// Web组件加载本地index.html页面
Web({ src: $rawfile('index.html'), controller: this.webviewController})
// 将对象注入到web端
.javaScriptProxy({
object: this.testObj,
name: "testObjName",
methodList: ["test"],
controller: this.webviewController,
// 可选参数
asyncMethodList: [],
permission: '{"javascriptProxyPermission":{"urlPermissionList":[{"scheme":"resource","host":"rawfile","port":"","path":""},' +
'{"scheme":"e","host":"f","port":"g","path":"h"}],"methodList":[{"methodName":"test","urlPermissionList":' +
'[{"scheme":"https","host":"xxx.com","port":"","path":""},{"scheme":"resource","host":"rawfile","port":"","path":""}]},' +
'{"methodName":"test11","urlPermissionList":[{"scheme":"q","host":"r","port":"","path":"t"},' +
'{"scheme":"u","host":"v","port":"","path":""}]}]}}'
})
}
}
}

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// xxx.ets
import { webview } from '@kit.ArkWeb';
import { BusinessError } from '@kit.BasicServicesKit';
class testClass {
constructor() {
}
test(): string {
return "ArkUI Web Component";
}
toString(): void {
console.log('Web Component toString');
}
}
@Entry
@Component
struct Index {
webviewController: webview.WebviewController = new webview.WebviewController();
@State testObj: testClass = new testClass();
build() {
Column() {
Button('refresh')
.onClick(() => {
try {
this.webviewController.refresh();
} catch (error) {
console.error(`ErrorCode: ${(error as BusinessError).code}, Message: ${(error as BusinessError).message}`);
}
})
Button('Register JavaScript To Window')
.onClick(() => {
try {
this.webviewController.registerJavaScriptProxy(this.testObj, "testObjName", ["test", "toString"],
// 可选参数, asyncMethodList
[],
// 可选参数, permission
'{"javascriptProxyPermission":{"urlPermissionList":[{"scheme":"resource","host":"rawfile","port":"","path":""},' +
'{"scheme":"e","host":"f","port":"g","path":"h"}],"methodList":[{"methodName":"test","urlPermissionList":' +
'[{"scheme":"https","host":"xxx.com","port":"","path":""},{"scheme":"resource","host":"rawfile","port":"","path":""}]},' +
'{"methodName":"test11","urlPermissionList":[{"scheme":"q","host":"r","port":"","path":"t"},' +
'{"scheme":"u","host":"v","port":"","path":""}]}]}}'
);
} catch (error) {
console.error(`ErrorCode: ${(error as BusinessError).code}, Message: ${(error as BusinessError).message}`);
}
})
Web({ src: $rawfile('index.html'), controller: this.webviewController })
}
}
}

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