防丢App记录（2）--将序列号通过文件存储

存String数

private void save(String te1) {

try {

mFileOutputStream=openFileOutput(“simid”, Context.MODE_PRIVATE);

writer =new BufferedWriter(new OutputStreamWriter(mFileOutputStream));

writer.write(te1);

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}finally {

if(writer!=null){

try {

writer.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

取出来

public String load(){

FileInputStream in=null;

BufferedReader reader=null;

StringBuilder content=new StringBuilder();

try {

in=openFileInput(“simid”);

reader=new BufferedReader(new InputStreamReader(in));

String line=null;

while((line=reader.readLine())!=null){

content.append(line);

}

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}finally {

if(reader!=null){

try {

reader.close();

} catch (IOException e) {

e.printStackTrace();

}
}
}
return  content.toString();
}