[移动开发]记 H5调用打开android文件管理上传文件

webView加载H5页面，H5调用android本地文件管理器搜索指定类型文件选择并上传

效果图：

?

贴代码：

mWebView.webChromeClient = object : WebChromeClient() {
            val mIsLoadFinish : AtomicBoolean = AtomicBoolean(false)

            @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
            override fun onShowFileChooser(webView: WebView?, filePathCallback: ValueCallback<Array<Uri>>?, fileChooserParams: FileChooserParams?): Boolean {
                uploadMessageAboveL = filePathCallback


                PermissionX.init(this@WebActivity)
                        .permissions( Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE)
                        .request(RequestCallback { allGranted, grantedList, deniedList ->
                            if (allGranted) {
                                
                                    val acceptTypes = fileChooserParams!!.acceptTypes

                                    startActivityForResult(Intent.createChooser(getFilerChooserIntent(acceptTypes[0]), "File Chooser"), CHOOSER_REQUEST_OA)



                              
                            } else {
                                ToastManager.show("此功能需要存储权限，请在设置-应用中开启!")
                            }
                        })

                return true
            }

 fun  getFilerChooserIntent(flag : String)  : Intent{
        val intent =  Intent(Intent.ACTION_GET_CONTENT)
          intent.addFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED)

        intent.addCategory(Intent.CATEGORY_OPENABLE)
        when(flag){
            ".jpg"->{
                intent.type = "image/*"

            }

            ".xls"->{
                intent.putExtra(Intent.EXTRA_MIME_TYPES, arrayOf(MimeTyppes.XLS, MimeTyppes.XLST, MimeTyppes.XLSX))

                intent.type = "*/*"

            }
            ".pdf"->{
                intent.type = "application/pdf"

            }
            ".doc"->{

                intent.putExtra(Intent.EXTRA_MIME_TYPES, arrayOf(MimeTyppes.DOC, MimeTyppes.DOCX, MimeTyppes.DOTX))
                intent.type = "*/*"

            }
            else->{
                intent.type = "*/*"

            }
        }
        intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, false)
        return intent
    }

 override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        
        if(requestCode == CHOOSER_REQUEST_OA){
            if ( null == uploadMessageAboveL) return
            if (uploadMessageAboveL != null) {
                onActivityResultAboveLOA(requestCode, resultCode, data)
            }

        }
    }

 private fun onActivityResultAboveLOA(requestCode: Int, resultCode: Int, intent: Intent?) {
        if ( uploadMessageAboveL == null) return
        var results: Array<Uri>? = null
        if (resultCode == RESULT_OK) {
            if (intent != null) {
                val dataString = intent.dataString
                if (dataString != null) results = arrayOf(Uri.parse(dataString))
            }
        }
        uploadMessageAboveL!!.onReceiveValue(results)
        uploadMessageAboveL = null
    }

object MimeTyppes {
    val DOC = "application/msword"
    val DOCX = "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
    val DOTX = "application/vnd.openxmlformats-officedocument.wordprocessingml.template"
    val XLS = "application/vnd.ms-excel"
    val XLSX = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
    val XLST = "application/vnd.openxmlformats-officedocument.spreadsheetml.template"
    val PDF = "application/pdf"
}