Java tutorial
//package com.java2s; import java.io.File; import java.util.ArrayList; import java.util.List; import android.text.TextUtils; public class Main { public static List<String> getSubtitlePath(String videoPath) { List<String> sbPathList = new ArrayList<String>(); if (TextUtils.isEmpty(videoPath)) return sbPathList; if (videoPath.contains("file")) { videoPath = videoPath.substring(7); } int end = videoPath.lastIndexOf("/", videoPath.length()); String path = videoPath.substring(0, end + 1); end = videoPath.lastIndexOf(".", videoPath.length()); if (-1 == end || null == path) return sbPathList; String subffix = videoPath.substring(0, end); File files = new File(path); if ((files != null) && (files.exists()) && (files.isDirectory())) { File[] filesInDir = files.listFiles(); long count = filesInDir.length; for (int num = 0; num < count; num++) { String filePath = filesInDir[num].getPath(); File subTitleFile = new File(filePath); if ((subTitleFile != null) && (subTitleFile.isFile()) && (subTitleFile.canRead())) { int pos = filePath.lastIndexOf(".", filePath.length()); String sub = filePath.substring(pos + 1, filePath.length()); if ((filePath.startsWith(subffix)) && (sub != null) && ((sub.equalsIgnoreCase("srt")) || (sub.equalsIgnoreCase("ass")) || (sub.equalsIgnoreCase("smi")) || (sub.equalsIgnoreCase("ssa")))) { sbPathList.add(filePath); } } } if (sbPathList.size() != 0) { return sbPathList; } } return sbPathList; } }