Android studio中读取用户信息代码 具体思路过程

private static String getContentFromFile(String parent,String child) { //用bean不用map原因,
String content="";
FileInputStream fis=null;
File file = new File(parent,child);
try {
fis = new FileInputStream(file);
BufferedReader reader = new BufferedReader(new InputStreamReader(fis));
content = reader.readLine();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();

}finally {
    try {
        fis.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}


return  content;

}

你这个代码只读取了文件里面第一行的内容。