Android WebView文件上传(关键代码)

WebChromeClient webChromeClient = new WebChromeClient() {


        // For Android 3.0+
        public void openFileChooser(ValueCallback<Uri> uploadMsg) {
            if (X5WebViewActivity.this.uploadFile != null) {
                X5WebViewActivity.this.uploadFile.onReceiveValue(null);
            }
            X5WebViewActivity.this.uploadFile = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("*/*");
            startActivityForResult(Intent.createChooser(i, "FileConstant Chooser"), 0);
        }

        // For Android 3.0+
        public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
            if (X5WebViewActivity.this.uploadFile != null) {
                X5WebViewActivity.this.uploadFile.onReceiveValue(null);
            }
            X5WebViewActivity.this.uploadFile = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            String type = TextUtils.isEmpty(acceptType) ? "*/*" : acceptType;
            i.setType(type);
            startActivityForResult(Intent.createChooser(i, "FileConstant Chooser"),
                    0);
        }

        // For Android  > 4.1.1
        @Override
        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
            Log.i("test", "openFileChooser 3");
            X5WebViewActivity.this.uploadFile = uploadFile;
            selectImage();
        }

        // For Android  >= 5.0
        @Override
        public boolean onShowFileChooser(com.tencent.smtt.sdk.WebView webView,
                                         ValueCallback<Uri[]> filePathCallback,
                                         WebChromeClient.FileChooserParams fileChooserParams) {
            Log.i("test", "openFileChooser 4:" + filePathCallback.toString());
            X5WebViewActivity.this.uploadFiles = filePathCallback;
            selectImage();
            return true;
        }
    };

    protected final void selectImage() {
        String[] selectPicTypeStr = {"相机", "文件/图片"};
        AlertDialog alertDialog = new AlertDialog.Builder(this)
                .setItems(selectPicTypeStr,
                        new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog,
                                                int which) {
                                switch (which) {
                                    // 相机拍摄
                                    case 0:
                                        openCarcme();
                                        break;
                                    // 手机相册
                                    case 1:
                                        openFileChooseProcess();
                                        break;
                                    default:
                                        break;
                                }
                            }
                        }).setOnCancelListener(new DialogInterface.OnCancelListener() {
                    @Override
                    public void onCancel(DialogInterface dialogInterface) {
                        if (uploadFiles != null) {
                            Uri[] uris = new Uri[1];
                            uris[0] = Uri.parse("");
                            uploadFiles.onReceiveValue(uris);
                            uploadFiles = null;
                        } else {
                            uploadFile.onReceiveValue(Uri.parse(""));
                            uploadFile = null;
                        }
                    }
                }).show();
    }

    /**
     * 打开照相机
     */
    Uri cameraUri;

    private void openCarcme() {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        // 必须确保文件夹路径存在，否则拍照后无法完成回调
        File vFile = new File(MyAppConstant.FileConstant.DOWNLOAD_FILE_PATH
                       ,System.currentTimeMillis() + ".jpg");
        if (!vFile.exists()) {
            File vDirPath = vFile.getParentFile();
            vDirPath.mkdirs();
        } else {
            if (vFile.exists()) {
                vFile.delete();
            }
        }
        cameraUri = Uri.fromFile(vFile);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, cameraUri);
        startActivityForResult(intent, 1);
    }

    /**
     * 拍照结束后
     */
    private void afterOpenCamera() {
        File f = new File(MyAppConstant.FileConstant.DOWNLOAD_FILE_PATH
                , (System.currentTimeMillis() + ".jpg"));
        addImageGallery(f);
    }

    /**
     * 解决拍照后在相册中找不到的问题
     */
    private void addImageGallery(File file) {
        ContentValues values = new ContentValues();
        values.put(MediaStore.Images.Media.DATA, file.getAbsolutePath());
        values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
        getContentResolver().insert(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
    }


    private void openFileChooseProcess() {
        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.addCategory(Intent.CATEGORY_OPENABLE);
        i.setType("*/*");
        startActivityForResult(Intent.createChooser(i, "Chooser"), 0);

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode == RESULT_OK) {
            switch (requestCode) {
                case 0:
                    if (null != uploadFile) {
                        Uri result = data == null || resultCode != RESULT_OK ? null
                                : data.getData();
                        uploadFile.onReceiveValue(result);
                        uploadFile = null;
                    }
                    if (null != uploadFiles) {
                        Uri result = data == null || resultCode != RESULT_OK ? null
                                : data.getData();
                        uploadFiles.onReceiveValue(new Uri[]{result});
                        uploadFiles = null;
                    }
                    break;
                case 1:
                    if (uploadFiles == null) {
                        return;
                    }
                    afterOpenCamera();
                    Uri[] uris = new Uri[1];
                    uris[0] = cameraUri;
                    uploadFiles.onReceiveValue(uris);
                    break;
                default:
                    break;
            }
        } else if (resultCode == RESULT_CANCELED) {
            if (null != uploadFile) {
                uploadFile.onReceiveValue(null);
                uploadFile = null;
            }
            if (null != uploadFiles) {
                uploadFiles.onReceiveValue(null);
                uploadFiles = null;
            }

        }
    }