mWebView.setWebChromeClient(new WebChromeClient() {
            // For Android 5.0+
            @Override
            public boolean onShowFileChooser(WebView webView,
                                             ValueCallback<Uri[]> filePathCallback,
                                             FileChooserParams fileChooserParams) {
                mUploadCallbackAboveL = filePathCallback;
                choseSinglePic();
//                take();
                return true;
            }

            // For Android 3.0+
            public void openFileChooser(ValueCallback<Uri> uploadMsg) {
                mUploadMessage = uploadMsg;
                choseSinglePic();
            }

            //3.0--版本
            public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
                mUploadMessage = uploadMsg;
                choseSinglePic();
            }

            // For Android 4.1
            public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
                mUploadMessage = uploadMsg;
                choseSinglePic();
            }
 

onActivityResult的處理

@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == FILECHOOSER_RESULTCODE) {
            if (null == mUploadMessage && null == mUploadCallbackAboveL) return;
            selectList = PictureSelector.obtainMultipleResult(data);
            Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
            if (mUploadCallbackAboveL != null) {
                onActivityResultAboveL(requestCode, resultCode, data);
            } else if (mUploadMessage != null) {
                if (result != null) {
                    String path = getPath(getActivity().getApplicationContext(),
                            result);
                    Uri uri = Uri.fromFile(new File(path));
                    mUploadMessage.onReceiveValue(uri);
                } else {
                    mUploadMessage.onReceiveValue(imageUri);
                }
                mUploadMessage = null;


            }
        }
    }

    @SuppressWarnings("null")
    @TargetApi(Build.VERSION_CODES.BASE)
    private void onActivityResultAboveL(int requestCode, int resultCode, Intent data) {
        if (requestCode != FILECHOOSER_RESULTCODE
                || mUploadCallbackAboveL == null) {
            return;
        }

        Uri[] results = null;
        if (data == null) {
            results = new Uri[]{imageUri};
            Log.e("results==null", "results" + results.toString());
        } else {
            selectList = PictureSelector.obtainMultipleResult(data);
            if (selectList != null && selectList.size() > 0) {
                results=new Uri[selectList.size()];
                String path ="";
                for (int i = 0; i < selectList.size(); i++) {
                    LocalMedia localMedia = selectList.get(i);
                    if (localMedia.isCut() && !localMedia.isCompressed()) {
//                    // 裁剪過
                        path = localMedia.getCutPath();
                    } else if (localMedia.isCompressed() || (localMedia.isCut() && localMedia.isCompressed())) {
                        // 壓縮過,或者裁剪同時壓縮過,以最終壓縮過圖片為準
                        path = localMedia.getCompressPath();
                    } else {
                        // 原圖
                        path = localMedia.getPath();
                    }
                    Uri uri = Uri.fromFile(new File(path));
                    results[i]=uri;
                }
            }
            String dataString = data.getDataString();
            ClipData clipData = data.getClipData();
            if (clipData != null) {
                results = new Uri[clipData.getItemCount()];
                for (int i = 0; i < clipData.getItemCount(); i++) {
                    ClipData.Item item = clipData.getItemAt(i);
                    results[i] = item.getUri();
                }
            }

        }
        if (results != null) {
            mUploadCallbackAboveL.onReceiveValue(results);
            mUploadCallbackAboveL = null;
        } else {
            results = new Uri[]{imageUri};
            mUploadCallbackAboveL.onReceiveValue(results);
            mUploadCallbackAboveL = null;
        }

        return;
    }