如果我明白你的问题正确

你想打开Android设备上的摄像头在网页(HTML)，点击按钮？

在这样的假设的基础上， 你需要做以下

使用JavascriptInterface

public class WebVCamBridgeInterface {

/**

* Javacript function to start native camera

*/

@JavascriptInterface

public void takePicture() {

captureImage();

}

/**

* Javascript function to start the GalleryActivity for user to choose the image to be uploaded

*/

@JavascriptInterface

public void showPictures() {

Intent intent = new Intent(LandingActivity.this, GalleryActivity.class);

startActivityForResult(intent, Constants.REQ_GALLERY);

}

}

添加JSinterface到您的WebView

webView.addJavascriptInterface(new WebVCamBridgeInterface(), "AndroidDevice");

有以下JS在您的HTML /网页

function takePicture() {

if(typeof AndroidDevice !== "undefined"){

AndroidDevice.takePicture();

}

}

function showPictures() {

if(typeof AndroidDevice !== "undefined"){

AndroidDevice.showPictures();

}

}

function imageData(data){

document.getElementById('displayImage').setAttribute('src', 'data:image/png;base64,'+data);

if(typeof AndroidDevice !== "undefined"){

}

}

您也可以参考这些教程

欢呼！