«

安卓登陆框记住密码和自动登录的实现

时间：2024-3-2 18:21     作者：韩俊     分类： Android

运行图：

1，在AndroidMainfest文件中注册activity；运行了下还是不行

2，在MainActivity.java文件中的Intent intent = new Intent();

intent.setClass(MainActivity.this,

SuccessActivity1.class);

这两句后边加这一句
startActivity(intent);

3，替换文件，改包名：package com.example.minitwittersimulate;

4，创建home.xml文件

5，创建LoginActivity.java文件

6，将LoginActivity.java中的MainActivity改为LoginAvtivity 此时运行显示错误，因为没有在

AndroidMainfest.xml文件中注册LoginActivity

7，在AndroidMainfest中注册Activity。

8，运行，成功！


LoginActivity.java

package com.example.minitwittersimulate;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.Window;
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 etUsername;
    private EditText etPassword;
    private CheckBox cbRememberPass;
    private CheckBox autologin1;
    private Button btnLogin ;
    private SharedPreferences sp;
    private String userNameValue,passwordValue;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);

        // 初始化用户名、密码、记住密码、自动登录、登录按钮
        etUsername = (EditText) findViewById(R.id.etUsername);
        etPassword = (EditText) findViewById(R.id.etPassword);
        cbRememberPass = (CheckBox) findViewById(R.id.cbRememberPass);
        autologin1 = (CheckBox) findViewById(R.id.autologin1);
        btnLogin = (Button) findViewById(R.id.btnLogin);

        sp = getSharedPreferences("userInfo", 0);
        String name=sp.getString("USER_NAME", "");
        String pass =sp.getString("PASSWORD", "");

        boolean choseRemember =sp.getBoolean("cbRememberPass", false);
        boolean choseAutoLogin =sp.getBoolean("autologin1", false);

        //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){
            etUsername.setText(name);
            etPassword.setText(pass);
            cbRememberPass.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){
            autologin1.setChecked(true);
        }

        btnLogin.setOnClickListener(new OnClickListener() {

            // 默认可登录帐号xs,密码123
            @Override
            public void onClick(View arg0) {
                userNameValue = etUsername.getText().toString();
                passwordValue = etPassword.getText().toString();
                SharedPreferences.Editor editor =sp.edit();

                // TODO Auto-generated method stub
                if (userNameValue.equals("xs")
                        && 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(cbRememberPass.isChecked()){                     
                        editor.putBoolean("cbRememberPass", true);                        
                    }else{
                        editor.putBoolean("cbRememberPass", false);               
                    }

                    //是否自动登录
                        if(autologin1.isChecked()){                         
                            editor.putBoolean("autologin1", true);                            
                        }else{
                            editor.putBoolean("autologin1", false);
                        }
                    editor.commit();

                    //跳转
                    //Intent intent =new Intent(MainActivity.this,SuccessActivity1.class);
                    //startActivity(intent);

                    Intent intent = new Intent();
                    intent.setClass(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();
                }

            }

        });

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}


MainActivity.java

package com.example.minitwittersimulate;

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("autologin1", false);
        if(choseAutoLogin){
            talk.setVisibility(0);
            talk.setText(name+"自动登录成功");

            Intent intent = new Intent();
            intent.setClass(MainActivity.this, SuccessActivity.class);
            startActivity(intent);
        }

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


SuccessActiviy.java 
package com.example.minitwittersimulate;

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

public class SuccessActivity extends Activity {

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sucess);
    }
    public void outactivity(View v){

        System.exit(0);
    }
}


activity_main.xml 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@drawable/loginbg"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

  <include layout="@layout/login_top"/> 
  <include layout="@layout/login_bottom"/>"

</LinearLayout>


home.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/loginbg"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/talk"
        android:layout_width="match_parent"
        android:layout_height="30dp"
        android:text="文本" 
        android:gravity="center"
        android:visibility="gone"
        />

    <Button
        android:id="@+id/gologin"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="登录" 
        android:onClick="go"
        />
    <Button
        android:id="@+id/out"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="注销" 
         android:onClick="out"
        />
</LinearLayout>

login_bottom.xml 
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/tvRegist"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="21dp"
        android:layout_marginTop="18dp"
        android:text="@string/tvRegister"
        android:autoLink="all"
        android:textColorLink="#FF0066CC" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_marginBottom="24dp"
        android:src="@drawable/panda" />

    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="28dp"
        android:src="@drawable/icon" />

</RelativeLayout>

login_bottom.xml 
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/btnbg_roundcorner"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin" >

    <TextView
        android:id="@+id/tvUsername"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="@string/tvName"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <EditText
        android:id="@+id/etUsername"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tvUsername"
        android:layout_below="@+id/tvUsername"
        android:background="@android:drawable/edit_text"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <TextView
        android:id="@+id/tvPassword"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/etUsername"
        android:layout_below="@+id/etUsername"
        android:text="@string/tvPassword"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <EditText
        android:id="@+id/etPassword"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tvPassword"
        android:layout_below="@+id/tvPassword"
        android:layout_marginTop="16dp"
        android:background="@android:drawable/edit_text"
        android:ems="10"
        android:inputType="textPassword" />

    <Button
        android:id="@+id/btnLogin"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/etPassword"
        android:layout_below="@+id/etPassword"
        android:layout_marginTop="20dp"
        android:background="#FF72CAE1"
        android:text="@string/btnLogin" />

    <CheckBox
        android:id="@+id/cbRememberPass"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/etPassword"
        android:layout_alignTop="@+id/btnLogin"
        android:text="记住密码" />

    <CheckBox
        android:id="@+id/autologin1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/cbRememberPass"
        android:layout_below="@+id/cbRememberPass"
        android:text="自动登录" />

</RelativeLayout>


success.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/loginbg"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="30dp"
        android:gravity="center"
        android:text="登录成功，重启程序才可以看到效果哦~" />

</LinearLayout>



标签: android

热门推荐

1 Android视图自定义View绘制流程完全解析，带你一步步深入了解View(二)
2 Android 退出整个应用程序
3 谈谈Fragment的构造函数、重新创建(recreate)及相关
4 My Magic Android Tour —— 处女作
5 Android 打包Jar(发布SDK)常见问题及解决方案
6 Android平台调用WebService详解（二）
7 Android设计模式－－观察者模式
8 ScrollView实现滚动效果
9 android利用线程池高效实现异步任务
10 Android 编程下 SQLite 大数据量操作优化(插入操作)

日历

标签

hbase maven eclipse sybase PostgreSQL spring emcache oracle mongodb redis nginx golang java vue android ios mysql linux 微信小程序 css html php教程 javascript python php

搜索

最新文章

热门文章