Getting Video file path from uri

Question

I am using below code to get a video file path from uri.

Need review for the following:

1.Code optimization

2.Crash(Code is working fine in the devices I tested but i need to make sure that it doesn't crashes in any case)

3.Performance

4.Overall code review

 /**
 * Get a file path from a Uri. This will get the the path for Storage Access
 * Framework Documents, as well as the _data field for the MediaStore and
 * other file-based ContentProviders.
 */
 private String getPath(final Context context, final Uri uri) {
 final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
 // DocumentProvider
 if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
 // ExternalStorageProvider
 if (isExternalStorageDocument(uri)) {
 final String docId = DocumentsContract.getDocumentId(uri);
 final String[] split = docId.split(":");
 final String type = split[0];
 if ("primary".equalsIgnoreCase(type)) {
 return Environment.getExternalStorageDirectory() + "/" + split[1];
 } else {
 // Below logic is how External Storage provider build URI for documents
 // Based on http://stackoverflow.com/questions/28605278/android-5-sd-card-label and https://gist.github.com/prasad321/9852037
 StorageManager mStorageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
 try {
 Class<?> storageVolumeClazz = Class.forName("android.os.storage.StorageVolume");
 Method getVolumeList = mStorageManager.getClass().getMethod("getVolumeList");
 Method getUuid = storageVolumeClazz.getMethod("getUuid");
 Method getState = storageVolumeClazz.getMethod("getState");
 Method getPath = storageVolumeClazz.getMethod("getPath");
 Method isPrimary = storageVolumeClazz.getMethod("isPrimary");
 Method isEmulated = storageVolumeClazz.getMethod("isEmulated");
 Object result = getVolumeList.invoke(mStorageManager);
 final int length = Array.getLength(result);
 for (int i = 0; i < length; i++) {
 Object storageVolumeElement = Array.get(result, i);
 //String uuid = (String) getUuid.invoke(storageVolumeElement);
 final boolean mounted = Environment.MEDIA_MOUNTED.equals(getState.invoke(storageVolumeElement))
 || Environment.MEDIA_MOUNTED_READ_ONLY.equals(getState.invoke(storageVolumeElement));
 //if the media is not mounted, we need not get the volume details
 if (!mounted) continue;
 //Primary storage is already handled.
 if ((Boolean) isPrimary.invoke(storageVolumeElement) && (Boolean) isEmulated.invoke(storageVolumeElement))
 continue;
 String uuid = (String) getUuid.invoke(storageVolumeElement);
 if (uuid != null && uuid.equals(type)) {
 String res = getPath.invoke(storageVolumeElement) + "/" + split[1];
 return res;
 }
 }
 } catch (Exception ex) {
 }
 }
 }
 // DownloadsProvider
 else if (isDownloadsDocument(uri)) {
 final String id = DocumentsContract.getDocumentId(uri);
 if (!TextUtils.isEmpty(id)) {
 if (id.startsWith("raw:")) {
 return id.replaceFirst("raw:", "");
 }
 }
 String[] contentUriPrefixesToTry = new String[]{
 "content://downloads/public_downloads",
 "content://downloads/my_downloads",
 "content://downloads/all_downloads"
 };
 for (String contentUriPrefix : contentUriPrefixesToTry) {
 Uri contentUri = ContentUris.withAppendedId(Uri.parse(contentUriPrefix), Long.valueOf(id));
 try {
 String path = getDataColumn(context, contentUri, null, null);
 if (path != null) {
 return path;
 }
 } catch (Exception e) {}
 }
 return null;
 }
 // MediaProvider
 else if (isMediaDocument(uri)) {
 final String docId = DocumentsContract.getDocumentId(uri);
 final String[] split = docId.split(":");
 final String type = split[0];
 Uri contentUri = null;
 if ("image".equals(type)) {
 contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
 } else if ("video".equals(type)) {
 contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
 } else if ("audio".equals(type)) {
 contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
 }
 final String selection = "_id=?";
 final String[] selectionArgs = new String[]{
 split[1]
 };
 return getDataColumn(context, contentUri, selection, selectionArgs);
 }
 }
 // MediaStore (and general)
 else if ("content".equalsIgnoreCase(uri.getScheme())) {
// // Return the remote address
 if (isGooglePhotosUri(uri))
 return uri.getLastPathSegment();
 return getDataColumn(context, uri, null, null);
 }
 // File
 else if ("file".equalsIgnoreCase(uri.getScheme())) {
 return uri.getPath();
 }
 return null;
 }
 public static boolean isGooglePhotosUri(Uri uri) {
 return "com.google.android.apps.photos.content".equals(uri.getAuthority());
 }
 /**
 * Get the value of the data column for this Uri.
 */
 private String getDataColumn(Context context, Uri uri, String selection,
 String[] selectionArgs) {
 Cursor cursor = null;
 final String column = "_data";
 final String[] projection = {
 column
 };
 try {
 cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
 null);
 if (cursor != null && cursor.moveToFirst()) {
 final int column_index = cursor.getColumnIndexOrThrow(column);
 return cursor.getString(column_index);
 }
 } finally {
 if (cursor != null)
 cursor.close();
 }
 return null;
 }
 /**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is ExternalStorageProvider.
 */
 private boolean isExternalStorageDocument(Uri uri) {
 return "com.android.externalstorage.documents".equals(uri.getAuthority());
 }
 /**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is DownloadsProvider.
 */
 private boolean isDownloadsDocument(Uri uri) {
 return "com.android.providers.downloads.documents".equals(uri.getAuthority());
 }
 /**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is MediaProvider.
 */
 private boolean isMediaDocument(Uri uri) {
 return "com.android.providers.media.documents".equals(uri.getAuthority());
 }

• πάντα ῥεῖ: What do you mean crash?
• Android Developer: @πάνταῥεῖ to make sure code will not crash,,,
• Martin Spamer: The getPath() function is overly large, decompose it into smaller private functions, I would do this at each if statement.