[移动开发]Android WebView 实现文件、图片、视频 上传

布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <WebView
            android:id="@+id/webview"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

        <ProgressBar
            android:id="@+id/progressbar"
            style="@android:style/Widget.DeviceDefault.ProgressBar.Horizontal"
            android:layout_width="match_parent"
            android:layout_height="5dp"
            android:layout_marginTop="-1dp"
            android:background="#F5F5F5" />
    </FrameLayout>
</LinearLayout>

java activity实现：

package com.example.webviewupload;

import android.Manifest;
import android.annotation.TargetApi;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.util.Log;
import android.util.Patterns;
import android.view.KeyEvent;
import android.view.View;
import android.view.WindowManager;
import android.webkit.DownloadListener;
import android.webkit.JsResult;
import android.webkit.PermissionRequest;
import android.webkit.URLUtil;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceError;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.FileProvider;

import org.jetbrains.annotations.NotNull;

import java.io.File;
import java.util.Arrays;

public class WebViewActivity extends AppCompatActivity {

    private final String TAG = this.getClass().getName();
    private ValueCallback<Uri[]> mValueCallback;
    private WebChromeClient.FileChooserParams mFileChooserParams;
    private final static int FILE_CHOOSER_RESULT_CODE = 1;
    private static final int CAMERA_REQUEST_CODE = 2;

    private WebView webview;
    private ProgressBar progressBar;
    private File mImageFile = null;
    private Uri mImageUri = null;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_web);
        // 解决H5页面全屏时软键盘弹起遮挡问题
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE | WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
        AndroidBug5497Workaround.assistActivity(this);

        initMyView();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
    }

    private void initMyView() {
        String url = "https://kefu.easemob.com/webim/im.html?configId=982d8f2d-06db-49ab-9e14-673c151172b6";//测试地址
        webview = findViewById(R.id.webview);
        progressBar = findViewById(R.id.progressbar);

        WebSettings webSettings = webview.getSettings();
        webSettings.setJavaScriptEnabled(true); // 支持JS
        webSettings.setAllowFileAccess(true); // 可以访问文件
        webSettings.setAllowContentAccess(true);
        webSettings.setJavaScriptCanOpenWindowsAutomatically(true); // 支持JS打开新窗口
        webSettings.setLoadsImagesAutomatically(true); // 支持自动加载图片
        webSettings.setDomStorageEnabled(true);
        webSettings.setLoadWithOverviewMode(true);
        webSettings.setUseWideViewPort(true); // 将图片调整到适合webView的大小
        webSettings.setSupportZoom(true);
        webSettings.setBuiltInZoomControls(true);
        webSettings.setDisplayZoomControls(false);
        // 修改配置，支持http路径的内容，如内嵌的视频
        webSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
        webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE);

        webview.loadUrl(url);
        webview.setWebViewClient(new WebViewClient() {

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
                //解决重定向问题
                if (!TextUtils.isEmpty(request.getUrl().getPath()) && view.getHitTestResult() == null) {
                    view.loadUrl(request.getUrl().getPath());
                    return true;
                }
                return super.shouldOverrideUrlLoading(view, request);
            }

            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                //解决重定向问题
                if (!TextUtils.isEmpty(url) && view.getHitTestResult() == null) {
                    view.loadUrl(url);
                    return true;
                }
                return super.shouldOverrideUrlLoading(view, url);
            }

            @RequiresApi(api = Build.VERSION_CODES.M)
            @Override
            public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
                super.onReceivedError(view, request, error);
                Log.d(TAG, "onReceivedError=error=" + error.getDescription() + ",errorCode=" + error.getErrorCode() + ",failingUrl=" + request.getUrl());
            }

            @Override
            public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
                super.onReceivedError(view, errorCode, description, failingUrl);
                Log.d(TAG, "onReceivedError=description=" + description + ",errorCode=" + errorCode + ",failingUrl=" + failingUrl);
            }
        });

        webview.setDownloadListener(new DownloadListener() {
            @Override
            public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
                Log.d(TAG, "onDownloadStart=url=" + url + ",userAgent=" + userAgent +
                        ",contentDisposition=" + contentDisposition + ",mimetype=" + mimetype + ",contentLength=" + contentLength);
                //实现下载
                if (URLUtil.isValidUrl(url) && Patterns.WEB_URL.matcher(url).matches()) {
                    Uri uri = Uri.parse(url);
                    Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                    intent.addCategory(Intent.CATEGORY_BROWSABLE);
                    startActivity(intent);
                } else {//有可能是 bolb 类型
                    Log.d(TAG, "不支持此类型链接：" + url);
                }

            }
        });

        webview.setWebChromeClient(new WebChromeClient() {
            @Override
            public void onPermissionRequest(final PermissionRequest request) {
                Log.d(TAG, "onPermissionRequest=" + request.getResources());
                WebViewActivity.this.runOnUiThread(new Runnable() {
                    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
                    @Override
                    public void run() {
                        request.grant(request.getResources());
                    }
                });
            }

            @Override
            public void onReceivedTitle(WebView view, String title) {
                super.onReceivedTitle(view, title);
            }

            @Override
            public void onProgressChanged(WebView view, int newProgress) {
                progressBar.setProgress(newProgress);
                if (newProgress == 100) {
                    progressBar.postDelayed(() -> {
                        progressBar.setVisibility(View.GONE);
                    }, 200);
                } else {
                    progressBar.setVisibility(View.VISIBLE);
                }
            }

            //扩展支持alert事件
            @Override
            public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
                return true;
            }

            // For Android > 5.0
            public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> valueCallback, FileChooserParams fileChooserParams) {
                Log.d(TAG, "onShowFileChooser=" + Arrays.toString(fileChooserParams.getAcceptTypes()));
                mValueCallback = valueCallback;
                mFileChooserParams = fileChooserParams;
                if (ActivityCompat.checkSelfPermission(WebViewActivity.this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
                    openFileChooser();
                } else {
                    ActivityCompat.requestPermissions(WebViewActivity.this, new String[]{Manifest.permission.CAMERA}, CAMERA_REQUEST_CODE);
                }
                return true;
            }

        });
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull @NotNull String[] permissions, @NonNull @NotNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        Log.d(TAG, "onRequestPermissionsResult=ps=" + Arrays.toString(permissions) + ",gs=" + Arrays.toString(grantResults));
        //相机权限请求结果处理
        if (requestCode == CAMERA_REQUEST_CODE) {
            openFileChooser();
        }
    }

    /**
     * 选择文件 或 打开相机
     */
    private void openFileChooser() {
        //at=image/jpgimage/gifimage/jpegimage/png,m=0,h=null 或 at=image/*,m=0,h=null //图片
        //at=,m=0,h=null 或 at=*/*,m=0,h=null //附件
        //at=video/*,m=0,h=null //视频
        String at = Arrays.toString(mFileChooserParams.getAcceptTypes());
        String dmsg = "at=" + at + ",m=" + mFileChooserParams.getMode() + ",h=" + mFileChooserParams.getFilenameHint();
        Log.d(TAG, "dmsg=" + dmsg);

        Intent fileIntent = new Intent(Intent.ACTION_GET_CONTENT);
        fileIntent.addCategory(Intent.CATEGORY_OPENABLE);
        fileIntent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, mFileChooserParams.getMode() == WebChromeClient.FileChooserParams.MODE_OPEN_MULTIPLE);

        Intent imageCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);// 启动系统相机-拍图
        mImageFile = new File(getFilesDir().getPath() + "/" + System.currentTimeMillis() + ".jpg");
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            mImageUri = FileProvider.getUriForFile(this, getApplicationInfo().packageName + ".fileProvider", mImageFile);
        } else {
            mImageUri = Uri.fromFile(mImageFile); //传递路径
        }
        imageCaptureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mImageUri);

        Intent videoCaptureIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);// 启动系统相机-拍视频

        Intent[] intentArray = null;
        Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
        if (at.contains("image/")) {//图片
            fileIntent.setType("image/*");
            if (ActivityCompat.checkSelfPermission(WebViewActivity.this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
                intentArray = new Intent[]{imageCaptureIntent};
            }
        } else if (at.contains("video/")) {//视频
            fileIntent.setType("video/*");
            if (ActivityCompat.checkSelfPermission(WebViewActivity.this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
                intentArray = new Intent[]{videoCaptureIntent};
            }
        } else {//文件
            fileIntent.setType("*/*");
            if (ActivityCompat.checkSelfPermission(WebViewActivity.this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
                intentArray = new Intent[]{imageCaptureIntent, videoCaptureIntent};
            }
        }

        chooserIntent.putExtra(Intent.EXTRA_INTENT, fileIntent);
        chooserIntent.putExtra(Intent.EXTRA_TITLE, "选择操作");
        if (intentArray != null) {
            chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
        }
        startActivityForResult(chooserIntent, FILE_CHOOSER_RESULT_CODE);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (webview.canGoBack() && event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
            webview.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);
        Log.d(TAG, "onActivityResult-requestCode=" + requestCode + ",resultCode=" + resultCode + ",intent=" + intent);

        //选择器返回结果
        if (mValueCallback != null && requestCode == FILE_CHOOSER_RESULT_CODE) {
            if (mImageFile != null && mImageFile.length() > 10) {//如果图片文件大小 大于 10 byte ，则说明已被写入
                mValueCallback.onReceiveValue(new Uri[]{mImageUri});
            } else if (intent.getData() != null) {//单选文件、图片、视频
                mValueCallback.onReceiveValue(new Uri[]{intent.getData()});
            } else if (intent.getClipData() != null) {//多选文件、图片、视频
                Uri[] uris = new Uri[intent.getClipData().getItemCount()];
                for (int i = 0; i < intent.getClipData().getItemCount(); i++) {
                    uris[i] = intent.getClipData().getItemAt(i).getUri();
                }
                mValueCallback.onReceiveValue(uris);
            } else {
                mValueCallback.onReceiveValue(new Uri[]{});//onShowFileChooser return true 必须调用这个方法
            }
            mValueCallback = null;
            mFileChooserParams = null;
        }
    }
}

kotlin activity 实现：

package com.example.webviewupload

import android.Manifest
import android.annotation.SuppressLint
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.net.Uri
import android.os.Build
import android.os.Bundle
import android.provider.MediaStore
import android.text.TextUtils
import android.util.Log
import android.util.Patterns
import android.view.View
import android.view.WindowManager
import android.webkit.*
import android.widget.ProgressBar
import androidx.annotation.RequiresApi
import androidx.appcompat.app.AppCompatActivity
import androidx.core.app.ActivityCompat
import androidx.core.content.FileProvider
import java.io.File
import java.util.*

class WebViewActivityK : AppCompatActivity() {

    private val TAG: String = javaClass.simpleName
    private var mFilePathCallback: ValueCallback<Array<Uri>>? = null
    private val CAMERA_REQUEST_CODE: Int = 1
    private val FILE_CHOOSER_REQUEST_CODE: Int = 2
    private var mFileChooserParams: WebChromeClient.FileChooserParams? = null
    private var progressBar: ProgressBar? = null
    private var webview: WebView? = null
    private var mImageFile: File? = null
    private var mImageUri: Uri? = null

    companion object {
        private val HX_KEY_URL: String = "hx_key_url"
        fun startActivity(context: Context, url: String) {
            val intent = Intent(context, WebViewActivityK::class.java)
            intent.putExtra(HX_KEY_URL, url)
            context.startActivity(intent)
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_web)

        //防止软键盘遮挡 输入框
        window.setFlags(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE,WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN)
        AndroidBug5497Workaround.assistActivity(this)

        initHxView()
    }

    /**
     * 初始化 webview
     */
    @SuppressLint("SetJavaScriptEnabled")
    private fun initHxView() {
        //val hxUrl = intent?.getStringExtra(HX_KEY_URL)
        val hxUrl = "https://kefu.easemob.com/webim/im.html?configId=982d8f2d-06db-49ab-9e14-673c151172b6"//测试地址
        webview = findViewById(R.id.webview)
        progressBar = findViewById(R.id.progressbar)

        val webSettings = webview?.settings
        webSettings?.javaScriptEnabled = true // 支持JS
        webSettings?.allowFileAccess = true // 可以访问文件
        webSettings?.allowContentAccess = true
        webSettings?.javaScriptCanOpenWindowsAutomatically = true // 支持JS打开新窗口
        webSettings?.loadsImagesAutomatically = true // 支持自动加载图片
        webSettings?.domStorageEnabled = true
        webSettings?.loadWithOverviewMode = true
        webSettings?.useWideViewPort = true // 将图片调整到适合webView的大小
        webSettings?.setSupportZoom(true)
        webSettings?.builtInZoomControls = true
        webSettings?.displayZoomControls = false
        webSettings?.mixedContentMode = WebSettings.MIXED_CONTENT_ALWAYS_ALLOW
        webSettings?.cacheMode = WebSettings.LOAD_NO_CACHE

        hxUrl.let {
            webview?.loadUrl(it)
        }
        webview?.webViewClient = (object : WebViewClient() {
            override fun shouldOverrideUrlLoading(view: WebView?, urlString: String?): Boolean {
                //解决重定向问题
                if (!TextUtils.isEmpty(urlString) && view?.hitTestResult == null) {
                    Log.d(TAG, "shouldOverrideUrlLoading-let=urlString=" + urlString)
                    view?.loadUrl(urlString!!)
                }
                Log.d(TAG, "shouldOverrideUrlLoading-url=" + urlString + ",hitTestResult=" + view?.hitTestResult)
                return super.shouldOverrideUrlLoading(view, urlString)
            }

            @RequiresApi(Build.VERSION_CODES.N)
            override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
                //解决重定向问题
                if (!TextUtils.isEmpty(request?.url?.path) && view?.hitTestResult == null) {
                    view?.loadUrl(request?.url?.path!!)
                    Log.d(TAG, "shouldOverrideUrlLoading-N-urlString=" + request?.url + ",Redirect=" + request?.isRedirect)
                    return true
                }
                Log.d(TAG, "shouldOverrideUrlLoading-N-url=" + request?.url + ",hitTestResult=" + view?.hitTestResult + ",Redirect=" + request?.isRedirect)
                return super.shouldOverrideUrlLoading(view, request)
            }

            override fun onReceivedError(view: WebView?, errorCode: Int, description: String?, failingUrl: String?) {
                super.onReceivedError(view, errorCode, description, failingUrl)
                Log.d(TAG, "onReceivedError-errorCode=$errorCode,description=$description,failingUrl=$failingUrl")
            }

            @RequiresApi(Build.VERSION_CODES.M)
            override fun onReceivedError(view: WebView?, request: WebResourceRequest?, error: WebResourceError?) {
                super.onReceivedError(view, request, error)
                Log.d(TAG, "onReceivedError-M-errorCode=" + error?.errorCode + ",description=" + error?.description + ",failingUrl=" + request?.url)
            }
        })

        //文件下载监听
        webview?.setDownloadListener(object : DownloadListener {
            override fun onDownloadStart(url: String?, userAgent: String?, contentDisposition: String?, mimetype: String?, contentLength: Long) {
                Log.d(TAG, "onDownloadStart=$url,userAgent=$userAgent,contentDisposition=$contentDisposition,mimeType=$mimetype,contentLength=$contentLength")
                //判断url是否有效，且打开默认浏览器下载文件
                if (URLUtil.isValidUrl(url) || Patterns.WEB_URL.matcher(url).matches()) {
                    val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
                    intent.addCategory(Intent.CATEGORY_BROWSABLE)
                    startActivity(intent)
                } else {
                    Log.d(TAG, "onDownloadStart=无效url=$url")
                }
            }
        })

        webview?.webChromeClient = (object : WebChromeClient() {
            override fun onPermissionRequest(request: PermissionRequest?) {
                Log.d(TAG, "onPermissionRequest=" + request?.resources)
                //授权资源读取
                runOnUiThread(object : Runnable {
                    override fun run() {
                        request?.grant(request.resources)
                    }
                })
            }

            override fun onProgressChanged(view: WebView?, newProgress: Int) {
                //顶部进度条控制
                progressBar?.progress = newProgress
                if (newProgress == 100) {
                    progressBar?.postDelayed(object : Runnable {
                        override fun run() {
                            progressBar?.visibility = View.GONE
                        }
                    }, 200)
                } else {
                    progressBar?.visibility = View.VISIBLE
                }
            }

            override fun onJsAlert(view: WebView?, url: String?, message: String?, result: JsResult?): Boolean {
                return true //网页弹框
            }

            override fun onShowFileChooser(webView: WebView?, filePathCallback: ValueCallback<Array<Uri>>?, fileChooserParams: FileChooserParams?): Boolean {
                mFilePathCallback = filePathCallback
                mFileChooserParams = fileChooserParams

                //打开文件选择器
                if (ActivityCompat.checkSelfPermission(this@WebViewActivityK, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
                    openFileChooser()
                } else {//请求相机权限
                    ActivityCompat.requestPermissions(this@WebViewActivityK, arrayOf(Manifest.permission.CAMERA), CAMERA_REQUEST_CODE)
                }
                Log.d(TAG, "onShowFileChooser=atStr=" + Arrays.toString(fileChooserParams?.acceptTypes) + ",mode=" + fileChooserParams?.mode)
                return true
            }
        })

    }

    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        Log.d(TAG, "onRequestPermissionsResult=requestCode=$requestCode")
        //打开文件选择器
        if (requestCode == CAMERA_REQUEST_CODE) {
            openFileChooser()
        }
    }

    /**
     * 打开文件选择器
     */
    private fun openFileChooser() {
        val atStr = Arrays.toString(mFileChooserParams?.acceptTypes)

        //文件获取
        val contentIntent = Intent(Intent.ACTION_GET_CONTENT)
        contentIntent.addCategory(Intent.CATEGORY_OPENABLE)
        contentIntent.putExtra(
            Intent.EXTRA_ALLOW_MULTIPLE,
            mFileChooserParams?.mode == WebChromeClient.FileChooserParams.MODE_OPEN_MULTIPLE
        )

        val imageCaptureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)//系统相机-拍照
        //设置图片输出路径
        mImageFile = File(filesDir.path, System.currentTimeMillis().toString() + ".jpg")
        mImageUri = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            FileProvider.getUriForFile(this, applicationInfo.packageName + ".fileProvider", mImageFile!!)
        } else {
            Uri.fromFile(mImageFile)
        }
        imageCaptureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mImageUri)

        val videoCaptureIntent = Intent(MediaStore.ACTION_VIDEO_CAPTURE)//系统相机-拍视频

        val chooserIntent = Intent(Intent.ACTION_CHOOSER)
        var intentArr: Array<Intent>? = null
        if ("image/" in atStr) {//图片
            contentIntent.type = "image/*"
            if (ActivityCompat.checkSelfPermission(this,Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
                intentArr = arrayOf(imageCaptureIntent)
            }
        } else if ("video/" in atStr) {//视频
            contentIntent.type = "video/*"
            if (ActivityCompat.checkSelfPermission(this,Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
                intentArr = arrayOf(videoCaptureIntent)
            }
        } else {//所有文件
            contentIntent.type = "*/*"
            if (ActivityCompat.checkSelfPermission(this,Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
                intentArr = arrayOf(imageCaptureIntent, videoCaptureIntent)
            }
        }

        chooserIntent.putExtra(Intent.EXTRA_INTENT, contentIntent)
        chooserIntent.putExtra(Intent.EXTRA_TITLE, "选择操作")
        intentArr?.let {
            chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, it)
        }
        startActivityForResult(chooserIntent, FILE_CHOOSER_REQUEST_CODE)
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        Log.d(TAG, "onActivityResult=requestCode=$requestCode,resultCode=$resultCode,data=$data")

        //选择器返回结果处理
        if (mFilePathCallback != null && requestCode == FILE_CHOOSER_REQUEST_CODE) {
            val uris = when {
                (mImageFile?.length()!! > 10) -> {//拍照返回图片文件大小 > 10 byte 则使用
                    arrayOf(mImageUri!!)
                }
                (data?.data != null) -> {//单选文件
                    arrayOf(data.data!!)
                }
                (data?.clipData != null) -> {//多选文件
                    val uriArr = arrayListOf<Uri>()
                    for (i in 0 until data.clipData?.itemCount!!) {
                        val itemAt = data.clipData!!.getItemAt(i).uri
                        uriArr.add(itemAt)
                    }
                    uriArr.toTypedArray()
                }
                else -> {
                    arrayOf()
                }
            }
            mFilePathCallback?.onReceiveValue(uris)
        }
    }

}

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demo 下载地址 ：