Android-SharedPreferences實現記住密碼和自動登錄

效果圖：

第一次進入進來                                                      

勾選記住密碼和自動登錄成功後，第二次進來 

說明：中間存在的圖片或者多餘的其他部分可刪掉。留下最主要的填寫部分和登陸按鈕即可。功能還是可以實現的。

 XML文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@drawable/bj"
    tools:context="com.example.application.MainActivity">
   <ImageView
       android:layout_marginTop="50dp"
       android:layout_width="100dp"
       android:layout_height="100dp"
       android:src="@drawable/login_tx_1"
       android:layout_gravity="center"
       />
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <EditText
            android:layout_width="300dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:focusable="true"
            android:focusableInTouchMode="true"
            android:clickable="true"
            android:hint="請輸入賬號"
            android:gravity="center"
            android:paddingRight="100dp"
            android:id="@+id/login_uname"
            />
        <TextView
            android:layout_width="38dp"
            android:layout_height="33dp"
            android:layout_marginLeft="30dp"
            android:padding="6dp"
            android:gravity="center"
            android:drawableLeft="@drawable/uname"
            />
    </FrameLayout>
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <EditText
            android:layout_width="300dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:focusable="true"
            android:focusableInTouchMode="true"
            android:clickable="true"
            android:hint="請輸入密碼"
            android:gravity="center"
            android:paddingRight="100dp"
            android:password="true"
            android:id="@+id/login_upass"
            />
        <TextView
            android:layout_width="38dp"
            android:layout_height="33dp"
            android:layout_marginLeft="30dp"
            android:padding="6dp"
            android:gravity="center"
            android:drawableLeft="@drawable/upass"
            />
    </FrameLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        >
        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="記住密碼"
            android:id="@+id/login_auto"
            />
        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="50dp"
            android:text="自動登錄"
            android:id="@+id/login_btn"
            />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:layout_margin="15dp"
        >
      <ImageButton
          android:layout_width="40dp"
          android:layout_height="40dp"
          android:src="@drawable/login_qq"
          />
        <ImageButton
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:src="@drawable/login_weixin"
            android:layout_marginLeft="60dp"
            />
        <ImageButton
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:src="@drawable/login_xinlan"
            android:layout_marginLeft="60dp"
            android:id="@+id/login_xinlan"
            />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <Button
            android:layout_width="240dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="@drawable/a_radio_button_selector_1"
            android:gravity="center"
            android:text="登錄"
            android:id="@+id/login_login"
            />

        <Button
            android:layout_width="240dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginTop="20dp"
            android:background="@drawable/a_radio_button_selector_1"
            android:gravity="center"
            android:text="忘記密碼"
            android:id="@+id/login_find"
            />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginTop="20dp"
            android:text="沒有賬號，立即註冊"
            android:textColor="#6efafa"
            android:textSize="15dp"
            android:onClick="JumpRegister"
            />
    </LinearLayout>


</LinearLayout>

Java文件

package com.example.application;


import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Toast;
import com.sun.util.DBHelper;

import java.util.HashMap;

import cn.sharesdk.framework.Platform;
import cn.sharesdk.framework.PlatformActionListener;
import cn.sharesdk.framework.ShareSDK;
import cn.sharesdk.sina.weibo.SinaWeibo;


public class MainActivity extends AppCompatActivity {
    public static String LoginUid=null;
    public static String LoginName=null;
    private Button login_login;
    private Button login_find;
    private EditText login_uname;
    private EditText login_upass;
    private CheckBox login_auto;
    private CheckBox login_btn;
    private SharedPreferences sp;
    private ImageButton login_xinlan;
    private Platform weibo;
    private DBHelper dbHelper;
    private SQLiteDatabase sqLiteDatabase;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        //獲取控件
        login_uname = (EditText) findViewById(R.id.login_uname);
        login_upass = (EditText) findViewById(R.id.login_upass);
        login_auto = (CheckBox) findViewById(R.id.login_auto); //記住密碼
        login_btn = (CheckBox) findViewById(R.id.login_btn);    //自動登錄
        login_login = (Button) findViewById(R.id.login_login);  //登錄
        login_find = (Button) findViewById(R.id.login_find);
        login_xinlan = (ImageButton) findViewById(R.id.login_xinlan);
        //調用數據庫
        dbHelper = new DBHelper(this,"dtb.db",null,1);
        sqLiteDatabase = dbHelper.getWritableDatabase();
        //第三方登錄
        weibo = ShareSDK.getPlatform(SinaWeibo.NAME);
        login_xinlan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //回調信息，可以在這裏獲取基本的授權返回的信息，但是注意如果做提示和UI操作要傳到主線程handler裏去執行
                weibo.setPlatformActionListener(new PlatformActionListener
                        () {

                    @Override
                    public void onComplete(Platform platform, int i, HashMap<String, Object> hashMap) {
                        String openid = platform.getDb().getUserId();
                        String nickname = platform.getDb().getUserName();
                       Cursor cursor=sqLiteDatabase.rawQuery("select * from dtb_users where uname=?",new String[]{openid});
                        LoginUid=cursor.getString(cursor.getColumnIndex("uid"));
                        if(cursor.moveToNext()){
                          Log.i("test","已經註冊過！");
                        }else{
                            sqLiteDatabase.execSQL("insert into dtb_users(uname,upass,name,levelnumber) values('"+openid+"','null','"+nickname+"','"+1+"')");
                        }
                        //跳轉
                        MainActivity.LoginName=openid;
                        Intent intent=new Intent(MainActivity.this,MainMianActivity.class);
                        startActivity(intent);
                    }

                    @Override
                    public void onError(Platform arg0, int arg1, Throwable arg2) {
                        // TODO Auto-generated method stub
                        arg2.printStackTrace();
                    }

                    @Override
                    public void onCancel(Platform arg0, int arg1) {
                        // TODO Auto-generated method stub

                    }
                });

                //authorize與showUser單獨調用一個即可
                weibo.authorize();//單獨授權,OnComplete返回的hashmap是空的
                weibo.showUser(null);//授權並獲取用戶信息
                //移除授權
               //  weibo.removeAccount(true);
            }
        });

        //自動登錄判斷
        sp = this.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);
        //如果上次選了記住密碼，那進入登錄頁面也自動勾選記住密碼，並填上用戶名和密碼
        if(choseRemember){
            login_uname.setText(name);
            login_upass.setText(pass);
            login_auto.setChecked(true);
        }
        //如果上次登錄選了自動登錄，那進入登錄頁面也自動勾選自動登錄
        if(choseAutoLogin){
            login_btn.setChecked(true);
            Cursor cursor= sqLiteDatabase.rawQuery("select * from dtb_users where uname=? and upass=?",new String[]{name,pass});
            if(cursor.moveToNext()){
              new LoginThread().start();
                LoginName=name;
                LoginUid=cursor.getString(cursor.getColumnIndex("uid"));
            }

        }

        // 登錄監聽事件  現在默認爲用戶名爲：admin 密碼：123
        login_login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String userName=login_uname.getText().toString();
                String userPass=login_upass.getText().toString();
                SharedPreferences.Editor editor =sp.edit();
              Cursor cursor= sqLiteDatabase.rawQuery("select * from dtb_users where uname=? and upass=?",new String[]{userName,userPass});
                if(cursor.moveToNext()){//判斷是否查詢到此數據
                    Toast.makeText(MainActivity.this,"登錄成功", Toast.LENGTH_SHORT).show();
                     LoginName=userName;
                    LoginUid=cursor.getString(cursor.getColumnIndex("uid"));
                    //是否記住密碼
                    //記住用戶名、密碼、
                    editor.putString("USER_NAME", userName);
                    editor.putString("PASSWORD",userPass);
                    if(login_auto.isChecked()){
                        editor.putBoolean("remember", true);
                    }else{
                        editor.putBoolean("remember", false);
                    }
                    //是否自動登錄
                    if(login_btn.isChecked()){
                        editor.putBoolean("autologin", true);
                    }else{
                        editor.putBoolean("autologin", false);
                    }
                        editor.commit();
                    //跳轉界面
                    Intent intent = new Intent(MainActivity.this,MainMianActivity.class);
                    startActivity(intent);
                    Toast.makeText(MainActivity.this, "登錄成功！", Toast.LENGTH_SHORT).show();
                 //   finish();
                }else{
                    Toast.makeText(MainActivity.this,"用戶名或密碼錯誤，請重新登錄", Toast.LENGTH_LONG).show();
                }
            }
        });
    }


    public void JumpRegister(View view){
        Intent intent=new Intent(this,RegisterActivity.class);
        startActivity(intent);
        finish();
    }
        //子線程 控制自動睡眠2秒鐘後自動登錄
    class LoginThread extends Thread{
        @Override
        public void run() {
            try {
                sleep(2000);
                Intent intent = new Intent(MainActivity.this,MainMianActivity.class);
                startActivity(intent);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }


}

Demo 下載：http://download.csdn.net/detail/a985548426/9892719