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登录界面源码：

LoginActivity.java

public class LoginActivity extends Activity {

private EditText userName, password;

private CheckBox rem_pw, auto_login;

private Button btn_login;

private ImageButton btnQuit;

private String userNameValue,passwordValue;

private SharedPreferences sp;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

//去除标题

this.requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.login);

//获得实例对象

sp = this.getSharedPreferences("userInfo", Context.MODE_WORLD_READABLE);

userName = (EditText) findViewById(R.id.et_zh);

password = (EditText) findViewById(R.id.et_mima);

rem_pw = (CheckBox) findViewById(R.id.cb_mima);

auto_login = (CheckBox) findViewById(R.id.cb_auto);

btn_login = (Button) findViewById(R.id.btn_login);

btnQuit = (ImageButton)findViewById(R.id.img_btn);

//判断记住密码多选框的状态

if(sp.getBoolean("ISCHECK", false))

{

//设置默认是记录密码状态

rem_pw.setChecked(true);

userName.setText(sp.getString("USER_NAME", ""));

password.setText(sp.getString("PASSWORD", ""));

//判断自动登陆多选框状态

if(sp.getBoolean("AUTO_ISCHECK", false))

{

//设置默认是自动登录状态

auto_login.setChecked(true);

//跳转界面

Intent intent = new Intent(LoginActivity.this,LogoActivity.class);

LoginActivity.this.startActivity(intent);

}

}