android 记住用户名密码+自动登录示例源码

package com.example.autologin;import android.app.Activity;import android.content.Intent;import android.content.SharedPreferences;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Toast;public class LoginActivity extends Activity {private EditText username;private EditText userpassword;private CheckBox remember;private CheckBox autologin;private Button login;private SharedPreferences sp;private String userNameValue,passwordValue;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.login);// 初始化用户名、密码、记住密码、自动登录、登录按钮username = (EditText) findViewById(R.id.username);userpassword = (EditText) findViewById(R.id.userpassword);remember = (CheckBox) findViewById(R.id.remember);autologin = (CheckBox) findViewById(R.id.autologin);login = (Button) findViewById(R.id.login);sp = getSharedPreferences("userInfo", 0);String name=sp.getString("USER_NAME", "");String pass =sp.getString("PASSWORD", ""); boolean choseRemember =sp.getBoolean("remember", false); boolean choseAutoLogin =sp.getBoolean("autologin", false); // Toast.makeText(this, name, Toast.LENGTH_SHORT).show(); //如果上次选了记住密码，那进入登录页面也自动勾选记住密码，并填上用户名和密码 if(choseRemember){ username.setText(name); userpassword.setText(pass); remember.setChecked(true); } //如果上次登录选了自动登录，那进入登录页面也自动勾选自动登录 if(choseAutoLogin){ autologin.setChecked(true); } login.setOnClickListener(new OnClickListener() {// 默认可登录帐号tinyphp,密码123@Overridepublic void onClick(View arg0) {userNameValue = username.getText().toString();passwordValue = userpassword.getText().toString();SharedPreferences.Editor editor =sp.edit();// TODO Auto-generated method stubif (userNameValue.equals("tinyphp")&& passwordValue.equals("123")) {Toast.makeText(LoginActivity.this, "登录成功",Toast.LENGTH_SHORT).show();//保存用户名和密码editor.putString("USER_NAME", userNameValue);editor.putString("PASSWORD", passwordValue);//是否记住密码if(remember.isChecked()){editor.putBoolean("remember", true);}else{editor.putBoolean("remember", false);}//是否自动登录if(autologin.isChecked()){editor.putBoolean("autologin", true);}else{editor.putBoolean("autologin", false);}editor.commit();//跳转Intent intent =new Intent(LoginActivity.this,SuccessActivity.class);startActivity(intent);} else {Toast.makeText(LoginActivity.this, "用户名或密码错误，请重新登录!",Toast.LENGTH_SHORT).show();}}});}}