Android判断文本文件的编码格式

/**

* 判断文件的编码格式

* @param fileName :file

* @return 文件编码格式

*/

public static StringgetEncoding(File fileName) {

BufferedInputStream stream =null;

    try {

stream =new BufferedInputStream(

new FileInputStream(fileName));

    }catch (FileNotFoundException e) {

e.printStackTrace();

    }

int p =0;

    try {

p = (stream.read() <<8) + stream.read();

    }catch (IOException e) {

e.printStackTrace();

    }

String code =null;

    switch (p) {

case 0xefbb:

code ="UTF-8";

break;

        case 0xfffe:

code ="UTF-16LE";

break;

        case 0xfeff:

code ="UTF-16BE";

break;

        default:

code ="GBK";

    }

try {

stream.close();

    }catch (IOException e) {

e.printStackTrace();

    }

return code;

}​