自动登录界面

来源：互联网发布：ubuntu 桌面壁纸编辑：程序博客网时间：2024/06/15 15:44

LoginActivity.java

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;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.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android,密码123
@Override
public void onClick(View arg0) {
userNameValue = username.getText().toString();
passwordValue = userpassword.getText().toString();
SharedPreferences.Editor editor =sp.edit();

// TODO Auto-generated method stub
if (userNameValue.equals("android")
&& 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();
}

}

});

}

}

MainActivity.java

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.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
private SharedPreferences sp;
private TextView talk;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home);

talk =(TextView) findViewById(R.id.talk);

sp=getSharedPreferences("userInfo", 0);
String name =sp.getString("USER_NAME", "");
boolean choseAutoLogin =sp.getBoolean("autologin", false);
if(choseAutoLogin){
   talk.setVisibility(0);
   talk.setText(name+"自动登录成功");
}

}
//跳转到登录页面
public void go(View v){
   Intent intent =new Intent(this, LoginActivity.class);
   startActivity(intent);
}

//点击退出销毁登录记录
public void out(View v){
   SharedPreferences spout =getSharedPreferences("userInfo", 0);
   SharedPreferences.Editor ed =spout.edit();
   ed.clear();
   ed.commit();
   Toast.makeText(this, "销毁记录", Toast.LENGTH_SHORT).show();
}
}

SuccessActivity.java

package com.example.autologin;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;

public class SuccessActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.success);
}
public void outactivity(View v){

System.exit(0);
}
}

home.xml

success.xml

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