MainActivity.java 文件源码

@Override
protected void onPause() {
    super.onPause();
    SharedPreferences sharedPreferences = getSharedPreferences("USERPASS", PreferenceActivity.MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putString("username", "shenyanfang");
    editor.putString("password", "guess");
    editor.commit();
}