文章标题

//文件存储

try {

File file=new File(getCacheDir(),”info.txt”);

FileOutputStream fos=new FileOutputStream(file);

fos.write((qq+”##”+pd).getBytes());

fos.close();

Toast.makeText(this, “保存成功”, 0).show();

} catch (IOException e) {

e.printStackTrace();

Toast.makeText(this, “保存失败”, 0).show();

}

}

//数据读取

//获取原来在文件中保存的qq号和密码.回显到界面上

File file=new File(getCacheDir() ,”info.txt”);

//判断文件是否存在,文件长度大于0说明文件有数据

if(file.exists()&&file.length()>0){

try {

FileInputStream fis=new FileInputStream(file);

BufferedReader br=new BufferedReader(new InputStreamReader(fis));

String info=br.readLine();

String qq = info.split(“##”)[0];

String pd = info.split(“##”)[1];

et_qq.setText(qq);

et_pd.setText(pd);

}

catch (IOException e) {

e.printStackTrace();
}