SharedPreference数据存储

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //获取一个SharedPreferences对象
        SharedPreferences sp = getSharedPreferences("dataInfo", 0);
        String user = sp.getString("user", "");
        String password = sp.getString("password", "");
        ((EditText)findViewById(R.id.user)).setText(user);
        ((EditText)findViewById(R.id.password)).setText(password);
    }
	@Override
	protected void onStop() {
		super.onStop();
		SharedPreferences sp = getSharedPreferences("dataInfo", 0);
		sp.edit().putString("user", 
				((EditText)findViewById(R.id.user)).getText().toString())
			.putString("password", 
				((EditText)findViewById(R.id.password)).getText().toString())
			.commit();
	}