android 获取文件某一行

System.out.println( readLineFile(filePath.getPath(),15)); 
	} 
	public static String readLineFile(String filePath,int readLine) {
        String line;
        StringBuilder sb = new StringBuilder();


        int lines=0;
        try {
            //fileReader = new FileReader(filePath);
            InputStreamReader inputStreamReader=new InputStreamReader(
				new FileInputStream(filePath),"GBK");
            BufferedReader br = new BufferedReader(inputStreamReader);
            while ((line = br.readLine()) != null) {
                lines++;
				//byte[] bytes= line.getBytes("GBK");
                if (lines>=readLine){
					sb.append(line);
                    return sb.toString();
                }else {
                    //sb.append(line).append('\n');
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        //	System.out.println( sb.toString());


		return  sb.toString();
	
	
    }