load local mp4 file's thumbnail decode error when filename contain chinese

[wangduanqing5945]

what should I do？ I load mp4's thumbnail using imageloader，anything is normal. But, when I load local mp4 file that contain chinese name，that error come up.

error: E/ImageLoader: Image can't be decoded [file:///storage/emulated/0/easyVR/media/video/你好.mp4_651x311]

[wangduanqing5945]

finally，i find out why the problem is this method(BaseImageDownloader) always return false when the name contains chinese i fixed it create new class extends BaseImageDownloader, and write this method's imp, just like this

[zhEdward]

not only video thumbnail, if file path contain chinese character ,decode bitmap will also failure ，so according to this snippet (see follow)

简单来说，如果不想修改库里面的代码，所有中文路径全部通过 content:// 方式（而不是 file://） 的方式 传入 ImageLoader.getInstance().displayImage(uri, imageView, options)

/**
	 * 获取 路径(文件名)带有中文的 多媒体资源(当前仅限 图片 和 视频) uri
	 * 
	 * @param context
	 * @param filePath
	 * @return filePath 所指向的文件非 图片格式 or 视频格式 返回 null
	 */
	public static Uri getMediaContentUriCh(Context context, String filePath) {		
		String extension = "";
                //中文路径 因为 MimeTypeMap.getFileExtensionFromUrl(...) 返回null 所以采取 字符串分割方式获取
		int i = filePath.lastIndexOf('.');
		if (i > 0) {
			extension = filePath.substring(i + 1);
		}

		String mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(
				extension);
		if (mime.startsWith("video/")) {
			Cursor cursor = context.getContentResolver().query(
					MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
					new String[] { MediaStore.Video.Media._ID },
					MediaStore.Video.Media.DATA + "=? ",
					new String[] { filePath }, null);
			if (cursor != null && cursor.moveToFirst()) {
				int id = cursor.getInt(cursor
						.getColumnIndex(MediaStore.MediaColumns._ID));
				cursor.close();
				return Uri.withAppendedPath(
						MediaStore.Video.Media.EXTERNAL_CONTENT_URI, "" + id);
			} else {
				if (new File(filePath).exists()) {
					ContentValues values = new ContentValues();
					values.put(MediaStore.Video.Media.DATA, filePath);
					return context
							.getContentResolver()
							.insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
									values);
				} else {
					return null;
				}
			}
		} else if (mime.startsWith("image/")) {
			Cursor cursor = context.getContentResolver().query(
					MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
					new String[] { MediaStore.Images.Media._ID },
					MediaStore.Images.Media.DATA + "=? ",
					new String[] { filePath }, null);
			if (cursor != null && cursor.moveToFirst()) {
				int id = cursor.getInt(cursor
						.getColumnIndex(MediaStore.MediaColumns._ID));
				cursor.close();
				return Uri.withAppendedPath(
						MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "" + id);
			} else {
				if (new File(filePath).exists()) {
					ContentValues values = new ContentValues();
					values.put(MediaStore.Images.Media.DATA, filePath);
					return context.getContentResolver().insert(
							MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
							values);
				} else {
					return null;
				}
			}
		} else {
			return null;
		}
	}