需求目的： 手机机通过webView展示H5网页，在特殊场景下，需要使用相机拍照或者从相册获取照片，上传后台。
完整流程效果： 如下图
一、H5界面样例代码
使用html文件格式，文件直接打开就可以展示布局；一会在andriod webview中直接加载
<!DOCTYPE html><html lang="en" xmlns:v-on="http://www.w3.org/1999/xhtml"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title></head><div id="app"> <h1>alllalalallalal 默认会被覆盖</h1></div><template id="why"> <div> <h2>{{message}}</h2> <h2>{{counter}}</h2> <button @click="increment">+1</button> <button @click="decrement">-1</button> <h1 style="text-align: center;">{{ title }}</h1> <div> <h2 style="text-align: center;">android选中照片H5展示</h2> <!--HTML5提供了<input type="file">元素来实现选取文件的功能,在WebView表现为调用onShowFileChooser--> <input accept="image/*" capture="camera" ref="imgFile" type="file" multiple @change="previewFiles"> <div id="preview"> <img v-for="imgSrc in imageSources" :src="imgSrc" :key="imgSrc" style="max-width: 100px; max-height: 100px; margin: 10px;"> </div> </div> </div></template><body><!-- 引入 Vue 3 的 CDN 资源网络加载不了 --><!-- <script src="https://unpkg.com/vue@next"></script> --><!-- 引入 Vue 3 的 CDN 资源,本地引用 --><script src="vue3.2.12global.js"></script><script> Vue.createApp({ template: '#why', data: function () { return { message: "功能开发中，敬请期待！", counter: 100, pictureSelectorContent: "相机选择结果:", imageSources: [] // 存储图片的数据URL } }, // 在你的 Vue 组件中处理 Webview 传递的数据 mounted() { // 设置全局函数，用于接收 WebView 调用 // window.pictureSelectorResult = this.pictureSelectorResult; }, methods: { increment() { this.counter++; console.log("点击了+1"); }, decrement() { this.counter--; consloe.log("点击了-1"); }, startPictureSelector() { window.android.startPictureSelector(); }, previewFiles() { const files = this.$refs.imgFile.files; this.imageSources = []; for (let i = 0; i < files.length; i++) { const file = files[i]; const reader = new FileReader(); reader.onload = (e) => { this.imageSources.push(e.target.result); }; reader.readAsDataURL(file); } }, }, }).mount("#app")</script><style> h1 { font-size: 80px; font-weight: bold; margin-bottom: 20px; } h2 { font-size: 20px; font-weight: bold; color: #C8EFD4; } h3 { font-size: 10px; font-weight: bold; color: #C8EFD4; } button1 { font-size: 60px; padding: 10px 20px; background-color: #007bff; color: #fff; border: none; border-radius: 4px; cursor: pointer; margin-bottom: 20px; margin-top: 20px; text-align: center; /* 将文字水平居中显示 */ display: flex; /* 将按钮设置为flex容器 */ align-items: center; /* 将文字在垂直方向上居中显示 */ }</style></body></html>上述代码是前端代码，使用vue3框架展示一个基础 加减demo界面（不重要的冗余），以及 一个打开文件的按钮以及展示图片
其中HTML5提供了元素来实现选取文件的功能，当在WebView表现为调用onShowFileChooser后，回调图片uri列表一一获取并展示
二、Android打开相机以及相册的两种方式
方式一：android 原生方式
实际效果和流程示图
1.android界面逻辑代码
这边使用的是kotlin语言，使用的fragment界面展示,使用binding加载了布局，以及声明了webview组件，在webview上导入html链接，使本地H5界面展示
class VisitorFragment : Fragment() { private lateinit var binding: FragmentVisitorBinding lateinit var mActivity: Activity private lateinit var mRoot: View companion object { const val TAG = "VisitorFragment" } private var mWebViewUrl: String = "file:///android_asset/vue_android_demo.html" var mAppName = MainApplication.instance.configuration.BASE_APP_LOGIN_IDENTITY var mSystemName = WebViewConstant.DEFAULT_SYSTEM_NAME private var mVisitorAndroidJs: VisitorAndroidJs = VisitorAndroidJs(this) private var mWebView: WebView? = null var mAndroidId: String = WebViewConstant.DEFAULT_DEVICE_SIGN var mApiKey: String = WebViewConstant.DEFAULT_API_KEY //回传H5时使用的对象 private var mUploadCallback: ValueCallback<Array<Uri>>? = null //拍照传递的路径uri private var mImageUri: Uri? = null /** * onCreate方法是Activity生命周期的第一个回调方法 * ，当Activity被创建时被调用。 * 在这个方法中，你可以进行一些初始化的操作，比如设置布局、绑定控件、初始化数据等。 * * @param savedInstanceState If the fragment is being re-created from * a previous saved state, this is the state. */ override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding = FragmentVisitorBinding.inflate(layoutInflater) mRoot = binding.root //记录 val viewModel = ViewModelProvider(requireActivity())[DashboardViewModel::class.java] viewModel.setFragment(this) LogUtils.d(TAG, "onCreate") } /** * onCreateView方法是Fragment生命周期的回调方法， * 当Fragment创建并绘制其用户界面时被调用。 * 在这个方法中，你可以通过返回一个View对象来定义Fragment的用户界面。 * 它常用于加载布局文件、查找和初始化控件等操作。 * * @return */ override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View { LogUtils.d(TAG, "onCreateView") initView(mRoot, layoutInflater, null) return mRoot } fun initView(parent: View?, inflater: LayoutInflater?, container: ViewGroup?) { //设置当前fragment mAndroidId = DeviceUtils.getUniqueId(mActivity) initWebView() mWebView?.loadUrl(mWebViewUrl) //弹出展示链接 showToast("${getString(R.string.current_develop_environment)}$mWebViewUrl") initData() } override fun onAttach(context: Context) { super.onAttach(context) mActivity = context as Activity } /** * @param msg 内容 */ fun showToast(msg: String?) { val activity: Activity? = activity activity?.runOnUiThread { Toast.makeText( activity, msg, Toast.LENGTH_SHORT ).show() } } private fun initData() { } override fun onResume() { super.onResume() LogUtils.d(TAG, "onResume") } @SuppressLint("SetJavaScriptEnabled") private fun initWebView() { LogUtils.d(TAG, "initWebView") mWebView = binding.mainWebView mWebView?.requestFocus() mWebView?.isHorizontalScrollBarEnabled = false mWebView?.isVerticalScrollBarEnabled = false val setting = mWebView?.settings setting?.mixedContentMode = WebSettings.MIXED_CONTENT_ALWAYS_ALLOW; setting?.javaScriptEnabled = true //用于开启或禁用其 DOM（文档对象模型）存储功能，浏览器缓存这些数据 setting?.domStorageEnabled = true //允许访问文件，默认允许 setting?.allowFileAccess = true //设置不，会引起webView重新不急，默认NARROW_COLUMNS setting?.layoutAlgorithm = WebSettings.LayoutAlgorithm.NARROW_COLUMNS //自动缩放 setting?.setSupportZoom(true) setting?.builtInZoomControls = true //自适应屏幕 setting?.useWideViewPort = true setting?.loadWithOverviewMode = true //支持多窗口 setting?.setSupportMultipleWindows(true) setting?.setAppCacheEnabled(true) setting?.domStorageEnabled = true //定位 setting?.setGeolocationEnabled(true) //优先使用缓存数据，在缓存数据不存在的情况下才去获取网络数据 setting?.cacheMode = WebSettings.LOAD_CACHE_ELSE_NETWORK setting?.savePassword = false //设置js接口 mVisitorAndroidJs.let { mWebView?.addJavascriptInterface(it, "android") } //页面不跳转浏览器 mWebView?.webViewClient = object : WebViewClient() { override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean { LogUtils.d(TAG, "url： $url") view.loadUrl(url) return true } override fun shouldInterceptRequest( view: WebView, request: WebResourceRequest ): WebResourceResponse? { var uri = request.url var path = uri.path LogUtils.d(TAG, "uri: $uri, path: $path") return super.shouldInterceptRequest(view, request) } } //webView官方打开文件选取方法onShowFileChooser，把网页回传文件 mWebView?.webChromeClient = object : WebChromeClient() { //API >=21(android 5.0.1)回调此方法 override fun onShowFileChooser( webView: WebView?, filePathCallback: ValueCallback<Array<Uri>>?, fileChooserParams: FileChooserParams? ): Boolean { mUploadCallback = filePathCallback //使用拍照或者打开文件 mImageUri = ChoosePhotoFile.takePhoto(mActivity) //设置false会IllegalStateException: Duplicate showFileChooser result return true } } } fun onActivityResultResponse(requestCode: Int, resultCode: Int, intent: Intent?) { LogUtils.d( TAG, "onActivityResultResponse requestCode $requestCode, resultCode：$resultCode" ) // 扫描二维码/条码回传 if (requestCode == ScanCodeUtils.REQUEST_CODE_SCAN && resultCode == Activity.RESULT_OK) { LogUtils.d(TAG, "onActivityResultResponse ${intent?.extras}") if (intent == null) { //弹出展示链接 showToast("扫描结果为空") return } //传递给js，格式是"scanCodeResult('${data.extras}')"，其中单引号很重要，可能导致js script error //codedContent是组件中定义的参数名 setEvaluateJavascript("scanCodeResult('${intent.getStringExtra("codedContent")}')") } else if (requestCode == ChoosePhotoFile.REQUEST_CODE) { //拍照，界面跳回后，结果文件的使用 ChoosePhotoFile.takeActivityResult(requestCode, intent, mUploadCallback, mImageUri) } } @Override override fun onDestroy() { //防止更新dialog内存泄漏 super.onDestroy() } /** * 登录成功后跳转 */ open fun loginSuccessJump() { } /** * 给网页传值 * 传递给js，格式是"scanCodeResult('${data.extras}')" * 其中单引号很重要，可能导致js script error */ private fun setEvaluateJavascript(jspMethodAndValue: String) { LogUtils.d( TAG, "setEvaluateJavascript mWebView ${mWebView}, jspMethodAndValue $jspMethodAndValue" ) mWebView?.evaluateJavascript(jspMethodAndValue, ValueCallback<String>() { LogUtils.d(TAG, "给网页传值为: $jspMethodAndValue") }) }}android layout布局
<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <WebView android:id="@+id/main_web_view" android:layout_width="match_parent" android:layout_height="match_parent" /></androidx.constraintlayout.widget.ConstraintLayout>2.获取照片的主要思路是两个方法：
webView官方打开文件选取方法onShowFileChooser，把网页回传文件 //webView官方打开文件选取方法onShowFileChooser，把网页回传文件 mWebView?.webChromeClient = object : WebChromeClient() { //API >=21(android 5.0.1)回调此方法 override fun onShowFileChooser( webView: WebView?, filePathCallback: ValueCallback<Array<Uri>>?, fileChooserParams: FileChooserParams? ): Boolean { mUploadCallback = filePathCallback //使用拍照或者打开文件 mImageUri = ChoosePhotoFile.takePhoto(mActivity) //设置false会IllegalStateException: Duplicate showFileChooser result return true } } fun onActivityResultResponse(requestCode: Int, resultCode: Int, intent: Intent?) { LogUtils.d( TAG, "onActivityResultResponse requestCode $requestCode, resultCode：$resultCode" ) if (requestCode == ChoosePhotoFile.REQUEST_CODE) { //拍照或者相册选中后界面跳回后，结果文件的使用 ChoosePhotoFile.takeActivityResult(requestCode, intent, mUploadCallback, mImageUri) } }（因为我这里是activity嵌套fragment的,如果直接在activity使用webview就不需我这太麻烦）
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) { super.onActivityResult(requestCode, resultCode, data) LogUtils.d( TAG, "onActivityResult requestCode11 $requestCode, resultCode：$resultCode" ) //设置当前fragment val fragment = mDashboardViewModel.fragment.value Log.d(TAG, "fragment: $fragment") Log.d(TAG, "fragment.isResumed: ${fragment?.isResumed}") //界面返回时VisitorFragment还没有Resumed if (fragment is VisitorFragment) { val visitorFragment: VisitorFragment = fragment visitorFragment.onActivityResultResponse(requestCode, resultCode, data) } }3.打开相机和相册的工具类
object ChoosePhotoFile { private const val TAG = "ChoosePhotoFile" const val REQUEST_CODE: Int = 12345 fun takePhoto(activity: Activity): Uri { //相机可以访问的公共位置才能存储，获取时需要读取文件权限 val file: String = Environment.getExternalStorageDirectory() .toString() + File.separator + Environment.DIRECTORY_PICTURES + File.separator val fileName = "Image_${SimpleDateFormat("yyyyMMdd_HHmmss").format(Date())}.jpg" val realFile = File(file, fileName) val imageUri = Uri.fromFile(realFile) LogUtils.d(TAG, "realFile：$realFile, imageUri: $imageUri") // 拍照后获取图片需要文件权限，界面跳转直接拿文件不需要权限 //检查申请读文件权限 CheckPermissionUtils.requestPermissions( activity, arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.CAMERA) ) //调起相机,拍一张照片 val captureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE) captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri) //调起相册，取一张照片 val photoIntent = Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI) //选择方式，拍照或者相册 val chooserIntent = Intent.createChooser(photoIntent, "Image Chooser") chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, arrayOf<Parcelable>(captureIntent)) activity.startActivityForResult(chooserIntent, REQUEST_CODE) return imageUri } /** * H5针对从拍照或者相册中选中的图片做处理 * @param imageUri 拍照返回的数据， */ fun takeActivityResult( requestCode: Int, intent: Intent?, filePathCallback: ValueCallback<Array<Uri>>?, imageUri: Uri? ) { if (requestCode == REQUEST_CODE) { //从相册获取，返回的intent if (intent != null && intent.data != null) { var uri: Uri = intent.data as Uri LogUtils.d(TAG, "file uri: $uri") filePathCallback?.onReceiveValue(arrayOf<Uri>(uri)) } else { //从拍照中获取图片，已经返回的imageUri LogUtils.d(TAG, "take photo imageUri: $imageUri") if (imageUri != null) { filePathCallback?.onReceiveValue(arrayOf<Uri>(imageUri)) } else { filePathCallback?.onReceiveValue(null) } } } }}方式二：使用android 组件库是实现-朋友圈获取照片功能
实际效果和流程示图
1.获取照片的主要思路是两个方法-替换
//webView官方打开文件选取方法onShowFileChooser，把网页回传文件 mWebView?.webChromeClient = object : WebChromeClient() { //API >=21(android 5.0.1)回调此方法 override fun onShowFileChooser( webView: WebView?, filePathCallback: ValueCallback<Array<Uri>>?, fileChooserParams: FileChooserParams? ): Boolean { mUploadCallback = filePathCallback //使用拍照或者打开文件// mImageUri = ChoosePhotoFile.takePhoto(mActivity) //模拟微信朋友圈获取照片模式 LogUtils.d(TAG,"onShowFileChooser") PictureSelectorUtils.startPictureSelector(mActivity) //设置false会IllegalStateException: Duplicate showFileChooser result return true } } fun onActivityResultResponse(requestCode: Int, resultCode: Int, intent: Intent?) { LogUtils.d( TAG, "onActivityResultResponse requestCode $requestCode, resultCode：$resultCode" ) if (requestCode == PictureSelectorUtils.REQUEST_PICTURE_SELECTOR) { LogUtils.d(TAG, "onActivityResultResponse REQUEST_PICTURE_SELECTOR") PictureSelectorUtils.takeActivityResult(requestCode, intent, mUploadCallback) } }2.打开相机和相册的工具类
object PictureSelectorUtils { const val REQUEST_PICTURE_SELECTOR = 10012 const val TAG = "PictureSelectorUtils" fun startPictureSelector(activity: Activity) { LogUtils.d(TAG, "startPictureSelector") // 拍照后获取图片需要文件权限，界面跳转直接拿文件不需要权限 //检查申请读文件权限// CheckPermissionUtils.requestPermissions(// activity,// arrayOf(// Manifest.permission.CAMERA,// Manifest.permission.READ_EXTERNAL_STORAGE,// Manifest.permission.WRITE_EXTERNAL_STORAGE// )// ) //插件里自带了静态权限以及权限校验 PictureSelector.create(activity).openGallery(PictureMimeType.ofImage()) .imageEngine(GlideEngine) // Please refer to the Demo GlideEngine.java .isWeChatStyle(true) // 是否开启微信图片选择风格 .selectionMode(PictureConfig.MULTIPLE).forResult(REQUEST_PICTURE_SELECTOR) } fun getPictures(data: Intent): MutableList<Uri> { val selectList = PictureSelector.obtainMultipleResult(data) LogUtils.d(TAG, "getPicture selectList: $selectList") // 将照片路径转换成 Uri 列表 val imageUris: MutableList<Uri> = ArrayList() if (selectList.isEmpty()) { LogUtils.d(TAG, "getPicture selectList isEmpty") return imageUris } for (imagePath in selectList) { var path = imagePath.path LogUtils.d(TAG, "path: $path") val uri = Uri.parse(path) LogUtils.d(TAG, "uri: $uri") imageUris.add(uri) } LogUtils.d(TAG, "imageUris: ${imageUris.toString()}") return imageUris } /** * H5针对从文件钟选中的图片做处理 */ fun takeActivityResult( requestCode: Int, intent: Intent?, filePathCallback: ValueCallback<Array<Uri>>?, ) { if (requestCode == REQUEST_PICTURE_SELECTOR) { val selectList = PictureSelector.obtainMultipleResult(intent) LogUtils.d(TAG, "getPicture selectList: $selectList") // 将照片路径转换成 Uri 列表 val imageUris: MutableList<Uri> = ArrayList() if (selectList.isEmpty()) { LogUtils.d(TAG, "getPicture selectList isEmpty") filePathCallback?.onReceiveValue(null) return } for (imagePath in selectList) { var path = imagePath.path LogUtils.d(TAG, "path: $path") val uri = Uri.parse(path) LogUtils.d(TAG, "uri: $uri") imageUris.add(uri) } LogUtils.d(TAG, "imageUris: ${imageUris.toString()}") filePathCallback?.onReceiveValue(imageUris.toTypedArray()) } }}其中使用第三方组件库-实现类似朋友圈获取照片的样式，需要引入一下依赖
//照片获取类微信朋友圈 implementation 'com.github.LuckSiege.PictureSelector:picture_library:v2.6.0'拍照后获取图片需要文件权限，界面跳转直接拿文件不需要权限,且第三方插件库里自带了静态权限以及权限请求
3.我完整的代码——类似朋友圈获取界面逻辑
class VisitorFragment : Fragment() { private lateinit var binding: FragmentVisitorBinding lateinit var mActivity: Activity private lateinit var mRoot: View companion object { const val TAG = "VisitorFragment" } private var mWebViewUrl: String = "file:///android_asset/vue_android_demo.html" var mAppName = MainApplication.instance.configuration.BASE_APP_LOGIN_IDENTITY var mSystemName = WebViewConstant.DEFAULT_SYSTEM_NAME private var mVisitorAndroidJs: VisitorAndroidJs = VisitorAndroidJs(this) private var mWebView: WebView? = null var mAndroidId: String = WebViewConstant.DEFAULT_DEVICE_SIGN var mApiKey: String = WebViewConstant.DEFAULT_API_KEY //回传H5时使用的对象 private var mUploadCallback: ValueCallback<Array<Uri>>? = null //拍照传递的路径uri private var mImageUri: Uri? = null /** * onCreate方法是Activity生命周期的第一个回调方法 * ，当Activity被创建时被调用。 * 在这个方法中，你可以进行一些初始化的操作，比如设置布局、绑定控件、初始化数据等。 * * @param savedInstanceState If the fragment is being re-created from * a previous saved state, this is the state. */ override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding = FragmentVisitorBinding.inflate(layoutInflater) mRoot = binding.root //记录 val viewModel = ViewModelProvider(requireActivity())[DashboardViewModel::class.java] viewModel.setFragment(this) LogUtils.d(TAG, "onCreate") } /** * onCreateView方法是Fragment生命周期的回调方法， * 当Fragment创建并绘制其用户界面时被调用。 * 在这个方法中，你可以通过返回一个View对象来定义Fragment的用户界面。 * 它常用于加载布局文件、查找和初始化控件等操作。 * * @return */ override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View { LogUtils.d(TAG, "onCreateView") initView(mRoot, layoutInflater, null) return mRoot } fun initView(parent: View?, inflater: LayoutInflater?, container: ViewGroup?) { //设置当前fragment mAndroidId = DeviceUtils.getUniqueId(mActivity) initWebView() mWebView?.loadUrl(mWebViewUrl) //弹出展示链接 showToast("${getString(R.string.current_develop_environment)}$mWebViewUrl") initData() } override fun onAttach(context: Context) { super.onAttach(context) mActivity = context as Activity } /** * @param msg 内容 */ fun showToast(msg: String?) { val activity: Activity? = activity activity?.runOnUiThread { Toast.makeText( activity, msg, Toast.LENGTH_SHORT ).show() } } private fun initData() { } override fun onResume() { super.onResume() LogUtils.d(TAG, "onResume") } @SuppressLint("SetJavaScriptEnabled") private fun initWebView() { LogUtils.d(TAG, "initWebView") mWebView = binding.mainWebView mWebView?.requestFocus() mWebView?.isHorizontalScrollBarEnabled = false mWebView?.isVerticalScrollBarEnabled = false val setting = mWebView?.settings setting?.mixedContentMode = WebSettings.MIXED_CONTENT_ALWAYS_ALLOW; setting?.javaScriptEnabled = true //用于开启或禁用其 DOM（文档对象模型）存储功能，浏览器缓存这些数据 setting?.domStorageEnabled = true //允许访问文件，默认允许 setting?.allowFileAccess = true //设置不，会引起webView重新不急，默认NARROW_COLUMNS setting?.layoutAlgorithm = WebSettings.LayoutAlgorithm.NARROW_COLUMNS //自动缩放 setting?.setSupportZoom(true) setting?.builtInZoomControls = true //自适应屏幕 setting?.useWideViewPort = true setting?.loadWithOverviewMode = true //支持多窗口 setting?.setSupportMultipleWindows(true) setting?.setAppCacheEnabled(true) setting?.domStorageEnabled = true //定位 setting?.setGeolocationEnabled(true) //优先使用缓存数据，在缓存数据不存在的情况下才去获取网络数据 setting?.cacheMode = WebSettings.LOAD_CACHE_ELSE_NETWORK setting?.savePassword = false //设置js接口 mVisitorAndroidJs.let { mWebView?.addJavascriptInterface(it, "android") } //页面不跳转浏览器 mWebView?.webViewClient = object : WebViewClient() { override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean { LogUtils.d(TAG, "url： $url") view.loadUrl(url) return true } override fun shouldInterceptRequest( view: WebView, request: WebResourceRequest ): WebResourceResponse? { var uri = request.url var path = uri.path LogUtils.d(TAG, "uri: $uri, path: $path") return super.shouldInterceptRequest(view, request) } } //webView官方打开文件选取方法onShowFileChooser，把网页回传文件 mWebView?.webChromeClient = object : WebChromeClient() { //API >=21(android 5.0.1)回调此方法 override fun onShowFileChooser( webView: WebView?, filePathCallback: ValueCallback<Array<Uri>>?, fileChooserParams: FileChooserParams? ): Boolean { mUploadCallback = filePathCallback //使用拍照或者打开文件// mImageUri = ChoosePhotoFile.takePhoto(mActivity) //模拟微信朋友圈获取照片模式 LogUtils.d(TAG,"onShowFileChooser") PictureSelectorUtils.startPictureSelector(mActivity) //设置false会IllegalStateException: Duplicate showFileChooser result return true } } } fun onActivityResultResponse(requestCode: Int, resultCode: Int, intent: Intent?) { LogUtils.d( TAG, "onActivityResultResponse requestCode $requestCode, resultCode：$resultCode" ) // 扫描二维码/条码回传 if (requestCode == ScanCodeUtils.REQUEST_CODE_SCAN && resultCode == Activity.RESULT_OK) { LogUtils.d(TAG, "onActivityResultResponse ${intent?.extras}") if (intent == null) { //弹出展示链接 showToast("扫描结果为空") return } //传递给js，格式是"scanCodeResult('${data.extras}')"，其中单引号很重要，可能导致js script error //codedContent是组件中定义的参数名 setEvaluateJavascript("scanCodeResult('${intent.getStringExtra("codedContent")}')")// } else if (requestCode == ChoosePhotoFile.REQUEST_CODE) {// //拍照，界面跳回后，结果文件的使用// ChoosePhotoFile.takeActivityResult(requestCode, intent, mUploadCallback, mImageUri) } else if (requestCode == PictureSelectorUtils.REQUEST_PICTURE_SELECTOR) { LogUtils.d(TAG, "onActivityResultResponse REQUEST_PICTURE_SELECTOR") PictureSelectorUtils.takeActivityResult(requestCode, intent, mUploadCallback) } } @Override override fun onDestroy() { //防止更新dialog内存泄漏 super.onDestroy() } /** * 登录成功后跳转 */ open fun loginSuccessJump() { } /** * 给网页传值 * 传递给js，格式是"scanCodeResult('${data.extras}')" * 其中单引号很重要，可能导致js script error */ private fun setEvaluateJavascript(jspMethodAndValue: String) { LogUtils.d( TAG, "setEvaluateJavascript mWebView ${mWebView}, jspMethodAndValue $jspMethodAndValue" ) mWebView?.evaluateJavascript(jspMethodAndValue, ValueCallback<String>() { LogUtils.d(TAG, "给网页传值为: $jspMethodAndValue") }) }}三、总结一下
H5调用公共获取图片文件方法，在android手机端，H5主要依赖Webview,这边在webview声明并重写该方法onShowFileChooser使用工具类打开相机或相册，可以两种方式安卓原生方式或者利用第三方组件库方式选中图片，返回uri列表给H5H5收到uri照片列表，并且使用前端方式展示创造价值，乐哉分享！