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我希望 webview 按钮仅在手机中打开相机，

但它显示了相机和文件这两个选项。有什么方法可以删除文件并强制它只从相机捕获？

这是我的工作代码，它显示了相机和文件这两个选项，我试图删除意图然后这不能完全工作。

    webView.setWebChromeClient(new WebChromeClient() {
        public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {

            if(file_permission() && Build.VERSION.SDK_INT >= 21) {
                file_path = filePathCallback;
                Intent takePictureIntent = null;
                Intent takeVideoIntent = null;

                boolean includeVideo = false;
                boolean includePhoto = true;

                /*-- checking the accept parameter to determine which intent(s) to include --*/


                if (includePhoto) {
                    takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                    if (takePictureIntent.resolveActivity(MainActivity.this.getPackageManager()) != null) {
                        File photoFile = null;
                        try {
                            photoFile = create_image();
                            takePictureIntent.putExtra("PhotoPath", cam_file_data);
                        } catch (IOException ex) {
                            Log.e(TAG, "Image file creation failed", ex);
                        }
                        if (photoFile != null) {
                            cam_file_data = "file:" + photoFile.getAbsolutePath();
                            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
                        } else {
                            cam_file_data = null;
                            takePictureIntent = null;
                        }
                    }
                }

                Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
                contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
                contentSelectionIntent.setType(file_type);
                if (multiple_files) {
                    contentSelectionIntent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
                }

                Intent[] intentArray;
                if (takePictureIntent != null && takeVideoIntent != null) {
                    intentArray = new Intent[]{takePictureIntent, takeVideoIntent};
                } else if (takePictureIntent != null) {
                    intentArray = new Intent[]{takePictureIntent};
                } else if (takeVideoIntent != null) {
                    intentArray = new Intent[]{takeVideoIntent};
                } else {
                    intentArray = new Intent[0];
                }

                Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
                chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
                chooserIntent.putExtra(Intent.EXTRA_TITLE, "File chooser");
                chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
                startActivityForResult(chooserIntent, file_req_code);
                return true;
            } else {
                return false;
            }
        }
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