写入GPS信息到jpeg格式的图片中 ExifInterface类的使用

 /**
     * 写入信息到图片文件
     */
    public void writeGpsToImage(String path) {
        ExifInterface exifInterface = null;
        try {
            exifInterface = new ExifInterface(path);
            exifInterface.setAttribute(ExifInterface.TAG_DATETIME, "20161227"); //写入时间
            // 写入经度信息
            exifInterface.setAttribute(ExifInterface.TAG_GPS_LONGITUDE,
                    this.gpsInfoConvert(jingdu));
            exifInterface.setAttribute(ExifInterface.TAG_GPS_LONGITUDE_REF,
                    lng > 0 ? "E" : "W");
    //         写入纬度信息
            exifInterface.setAttribute(ExifInterface.TAG_GPS_LATITUDE,
                    gpsInfoConvert(weidu));
            exifInterface.setAttribute(ExifInterface.TAG_GPS_LATITUDE_REF,
                    lat > 0 ? "N" : "S");
    //         执行保存
            exifInterface.saveAttributes();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
/**
 * 将正常的经纬度信息转换成图片随需要的格式
 */
private String gpsInfoConvert(double gpsInfo) {
    gpsInfo= Math.abs(gpsInfo);
    String dms = Location.convert(gpsInfo, Location.FORMAT_SECONDS);
    String[]splits = dms.split(":");
    String[]secnds = (splits[2]).split("\\.");
    String seconds;
    if (secnds.length == 0) {
        seconds= splits[2];
    }else{
        seconds= secnds[0];
    }
    return splits[0] + "/1," + splits[1] + "/1," + seconds + "/1";
}