android preferences使用

1.Activity类中SharedPreferences mSharedPrefences;

2.在OnCreate中:mSharedPreferences = getSharedPreferences("login_config",0);

 serverIp.setText(mSharedPreferences.getString("serverIpStr",""));

 serverPort.setText(mSharedPreferences.getString("portStr",""));

3. 登陆后保存登陆信息，在login中：

  SharedPreferences.Editor mEditor = mSharedPreferences.edit();

  mEditor.putString("serverIpStr",serverIp.getText().toString().trim());

  mEditor.putString("portStr",port.getText().toString().trim());

  mEditor.commit();