2020年7月21日更新

适配安卓10方式:
返回URI即可

概述

手机上加载webview，网页上上传图片调用原生相机和相册上传图片

流程

先设置好webview的加载以及websetting，这里就不多说了。

setWebChromeClient

变量参数

//5.0以下使用
private ValueCallback<Uri> uploadMessage;
// 5.0及以上使用
private ValueCallback<Uri[]> uploadMessageAboveL;
//拍照图片路径
private String cameraFielPath;
private final static int FILE_CAMERA_RESULT_CODE = 129;

主要是setWebChromeClient方法的实现

mWebView.setWebChromeClient(new WebChromeClient() {
            // For Android < 3.0
            public void openFileChooser(ValueCallback<Uri> valueCallback) {
                uploadMessage = valueCallback;
                take();
            }
            
            // For Android  >= 3.0
            public void openFileChooser(ValueCallback valueCallback, String acceptType) {
                uploadMessage = valueCallback;
                take();
            }
            
            //For Android  >= 4.1
            public void openFileChooser(ValueCallback<Uri> valueCallback, String acceptType, String capture) {
                uploadMessage = valueCallback;
                take();
            }
            
            // For Android >= 5.0
            @Override
            public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
                uploadMessageAboveL = filePathCallback;
                take();
                return true;
            }
        });

这个方法分几个版本的适配3.0以下的设备，3.0到4.1的设备，4.1到5.0的设备,以及5.0以上的设备，每个方法参数不一样适配时请注意。5.0以下的参数都是 ValueCallback<Uri> ，以上的设备需要 ValueCallback<Uri[]> ,回传数据的时候也是对应的不要弄错了。

意图处理

private void take() {
        //拍照图片保存位置
        File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
        if ( !imageStorageDir.exists() ) {
            imageStorageDir.mkdirs();
        }
        cameraFielPath = imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg";
        File file = new File(cameraFielPath);
        //需要显示应用的意图列表，这个list的顺序和选择菜单上的图标顺序是相关的，请注意。
        final List<Intent> cameraIntents = new ArrayList<Intent>();
        final Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        final PackageManager packageManager = getPackageManager();
        //获取手机里所有注册相机接收意图的应用程序，放到意图列表里(无他相机，美颜相机等第三方相机)
        final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
        for (ResolveInfo res : listCam) {
            final String packageName = res.activityInfo.packageName;
            final Intent i = new Intent(captureIntent);
            i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
            i.setPackage(packageName);
            i.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));
            cameraIntents.add(i);
        }
        //相册选择器
        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.addCategory(Intent.CATEGORY_OPENABLE);
        i.setType("image/*");
        //intent选择器
        Intent chooserIntent = Intent.createChooser(i, "选择模式");
        chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{}));
        this.startActivityForResult(chooserIntent, FILE_CAMERA_RESULT_CODE);
    }

onActivityResult回调

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if ( null == uploadMessage && null == uploadMessageAboveL ) {
            return;
        }
        //没有返回值时的处理
        if ( resultCode != RESULT_OK ) {
            //需要回调onReceiveValue方法防止下次无法响应js方法
            if ( uploadMessageAboveL != null ) {
                uploadMessageAboveL.onReceiveValue(null);
                uploadMessageAboveL = null;
            }
            if ( uploadMessage != null ) {
                uploadMessage.onReceiveValue(null);
                uploadMessage = null;
            }
            return;
        }
        
        Uri result = null;
        if ( requestCode == FILE_CAMERA_RESULT_CODE ) {
            if ( null != data && null != data.getData() ) {
                result = data.getData();
            }
            if ( result == null && hasFile(cameraFielPath) ) {
                result = Uri.fromFile(new File(cameraFielPath));
            }
            //5.0以上设备的数据处理
            if ( uploadMessageAboveL != null ) {
                uploadMessageAboveL.onReceiveValue(new Uri[]{result});
                uploadMessageAboveL = null;
            } else if ( uploadMessage != null ) {
                //5.0以下设备的数据处理
                uploadMessage.onReceiveValue(result);
                uploadMessage = null;
            }
        }
    }

最后的效果如下：