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2025-04-02 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
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这篇文章主要介绍了webview怎么适配html5实现照片视频上传的相关知识,内容详细易懂,操作简单快捷,具有一定借鉴价值,相信大家阅读完这篇webview怎么适配html5实现照片视频上传文章都会有所收获,下面我们一起来看看吧。
一、需要实现的功能:
用H5实现的App中需要在H5获取手机中的照片或者视频文件上传到服务器。
二、分析实现方法:
由于不懂前端开发,不知道H5中有 input file之类的标签控件,可以用来选择文件,刚开始的思路还是想着native 端是否要通过提供inputstream流方式,将文件内容传递给JS。后来和前端沟通之后,H5在电脑端都是用input 设置type为 file 来实现文件选择功能,于是才开始搜索资料,发现时需要在webview中设置 setWebChromeClient ,其中有对input 的响应回调:
三、具体实现:
前端代码:
native端代码:
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)@Overridepublic boolean onShowFileChooser(WebView webView, ValueCallback filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) { mFilePathCallbacks = filePathCallback; // TODO: 根据标签中得接收类型,启动对应的文件类型选择器 String[] acceptTypes = fileChooserParams.getAcceptTypes(); for (String type : acceptTypes) { Log.d(TAG, "acceptTypes=" + type); } // 针对拍照后马上进入上传状态处理 if ((acceptTypes.length > 0) && acceptTypes[0].equals("image/example")) { Log.d(TAG, "onShowFileChooser takePhoto"); Intent it = CameraFunction.takePhoto(mContext); startActivityForResult(it, TAKE_PHOTO_AND_UPLOAD_REQUEST); return true; } // 针对录像后马上进入上传状态处理 if ((acceptTypes.length > 0) && acceptTypes[0].equals("video/example")) { Log.d(TAG, "onShowFileChooser record video"); Intent it = CameraFunction.recordVideo(mContext); startActivityForResult(it, RECORD_VIDEO_AND_UPLOAD_REQUEST); return true; } Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.addCategory(Intent.CATEGORY_OPENABLE); if (acceptTypes.length > 0) { if (acceptTypes[0].contains("image")) { intent.setType("image/*"); } else if (acceptTypes[0].contains("video")) { intent.setType("video/*"); } else { intent.setType("*/*"); } } else { intent.setType("*/*"); } WebViewActivity.this.startActivityForResult(Intent.createChooser(intent, "File Chooser"), REQUEST_FILE_PICKER); return true;}
回调设置uri:
/** * 设置input 标签出发的回调选择文件路径,优先使用path参数, * 其次使用uri参数 * @param uriParam * @param pathParam */private void setFilePathCallback(Uri uriParam, String pathParam) { //都为空,则设置null if (uriParam == null && pathParam == null) { if (mFilePathCallback != null) { mFilePathCallback.onReceiveValue(null); } if (mFilePathCallbacks != null) { mFilePathCallbacks.onReceiveValue(null); } } else if (null != pathParam) { // 优先使用path if (mFilePathCallback != null) { Uri uri = Uri.fromFile(new File(pathParam)); mFilePathCallback.onReceiveValue(uri); } if (mFilePathCallbacks != null) { Uri uri = Uri.fromFile(new File(pathParam)); mFilePathCallbacks.onReceiveValue(new Uri[] { uri }); } } else if (null != uriParam) { //其次使用uri if (mFilePathCallback != null) { String path = UriUtils.getPath(getApplicationContext(), uriParam); Uri uri = Uri.fromFile(new File(path)); mFilePathCallback.onReceiveValue(uri); } if (mFilePathCallbacks != null) { String path = UriUtils.getPath(getApplicationContext(), uriParam); Uri uri = Uri.fromFile(new File(path)); mFilePathCallbacks.onReceiveValue(new Uri[] { uri }); } } mFilePathCallback = null; mFilePathCallbacks = null;}
针对各个请求场景进行处理:
public void onActivityResult(int requestCode, int resultCode, Intent intent) {关于"webview怎么适配html5实现照片视频上传"这篇文章的内容就介绍到这里,感谢各位的阅读!相信大家对"webview怎么适配html5实现照片视频上传"知识都有一定的了解,大家如果还想学习更多知识,欢迎关注行业资讯频道。
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