简明现代魔法 -> Java编程语言 -> Android在对话框中实现登录与注册

Android在对话框中实现登录与注册

2011-05-29

在android的应用中越来越多的包含了网络互动功能,这就带来了注册,登陆账号功能。本文完整的介绍对话框的方式实现用户登陆功能。

登陆效果: 应用程序判断当前用户还未登陆,弹出登陆对话框,用户输入账号和密码信息后,传到服务器验证,验证成功后,现实Toast 成功信息,并转到其他界面。

注册效果:用户如没有账号,则点击登陆对话框的 "没有账号,快速注册账号", 弹出注册界面,用户输入注册信息,点击注册按钮,注册成功后,弹出toast信息"注册成功",完成注册后,转到其他功能界面。

整个功能大体上分两块:登陆对话框:输入登陆信息,实现登陆功能,转到注册界面。注册对话框:输入注册信息,实现注册功能。

对话框界面布局xml文件:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:orientation="vertical">
    
   <TextView
      android:id="@+id/txt_loginerror"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:textColor="#ff0000"
      android:text="输入的账号和密码不正确"
      android:gravity="left"
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:visibility="invisible"
   />
   
   
   <TextView
      android:id="@+id/username"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:text="账号"
      android:gravity="left"
      android:textAppearance="?android:attr/textAppearanceMedium" 
   />
      
    <EditText
      android:id="@+id/txt_username"
      android:layout_height="wrap_content"
      android:layout_width="fill_parent"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:autoText="false"
      android:capitalize="none"
      android:gravity="fill_horizontal"
      android:textAppearance="?android:attr/textAppearanceMedium" 
      />
    <TextView
      android:id="@+id/password"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:text="密码"
      android:gravity="left"
      />
    <EditText
      android:id="@+id/txt_password"
      android:layout_height="wrap_content"
      android:layout_width="fill_parent"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:autoText="false"
      android:capitalize="none"
      android:gravity="fill_horizontal"
      android:textAppearance="?android:attr/textAppearanceMedium" 
     />
     
        <TextView
      android:id="@+id/txt_toregister"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:textColor="#2200C1"
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:text="没有账号?快速注册"
      android:gravity="left"
      />
     
</LinearLayout>

后台业务逻辑:

	/*
     * 创建用户登陆的对话框
     * 登陆界面包含两个按钮
     * 1按钮为登陆
     * 2按钮为不登陆试玩
     * */
    private void CreateLoginAlert()
    {
        AlertDialog.Builder ad =new AlertDialog.Builder(this);
        ad.setTitle("账号登陆");
        ad.setView(ViewUtility.GetView(this,R.layout.sub_logindialog));
        adi=  ad.create();
        
     
    /*     
        */
        adi.setButton("登陆", new OnClickListener(){

            @Override
            public void onClick(DialogInterface arg0, int arg1) {
            
                EditText password=    (EditText)adi.findViewById(R.id.txt_password);
                EditText account =(EditText)adi.findViewById(R.id.txt_username);
                
                PassWord=password.getText().toString();
                Account=account.getText().toString();
                //生成登陆对话框
                m_Dialog=ProgressDialog.show(Main.this, "请等待...", "正在为你登陆...",true);

                mRedrawHandler.sleep(100);        
            }
        });
        
        adi.setButton2("试  玩", new OnClickListener(){

            @Override
            public void onClick(DialogInterface arg0, int arg1) {
                ViewUtility.NavigateActivate(Main.this, SelectTheme.class);
            }
        });
        
        adi.show();  
        
        
         //设置注册点击事件
        TextView  register=(TextView)adi.findViewById(R.id.txt_toregister);
        register.setOnClickListener(new  TextView.OnClickListener()
        {
           public void onClick(View v){
               //创建注册对话框
             CreateRegisterAlert();
               adi.dismiss();
               
           }
       });
        
    }
    
    /*
     *定时线程做验证用
     * */
    private RefreshHandler mRedrawHandler = new RefreshHandler();
    
    class RefreshHandler extends Handler {

        @Override
        public void handleMessage(Message msg) {
              
            try{
                
                 //调用网络接口,实现登陆指令
               Boolean flags=    UserDataServiceHelper.Login(Account, PassWord);    
               if(flags)    
              {
                //保存登陆信息
                UserDataWriteHelper uw=new UserDataWriteHelper(Main.this);
                uw.SaveUserInfoInDB("xuwenbing", Account);
                //提示登陆成功
                 Toast.makeText(Main.this, "登陆成功", Toast.LENGTH_SHORT).show();        
                 //转到主题页面
                   ViewUtility.NavigateActivate(Main.this, SelectTheme.class);
               }else
               {
                //失败 显示错误信息
                 Toast.makeText(Main.this, "登陆失败", Toast.LENGTH_SHORT).show();
                 adi.show();
                 adi.findViewById(R.id.txt_loginerror).setVisibility(View.VISIBLE);
                }
            }
            catch(Exception e)
            {
                e.printStackTrace();                            
            }
            finally{
                m_Dialog.dismiss();        
            }
        }
        public void sleep(long delayMillis) {
            this.removeMessages(0);
            sendMessageDelayed(obtainMessage(0), delayMillis);
        }
    };

对话框界面布局xml文件:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:orientation="vertical">
    
    <LinearLayout
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:orientation="horizontal"
   android:gravity="center"
   >
   <TextView
      android:id="@+id/txt_loginerror"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:textColor="#ff0000"
      android:text="输入的账号和密码不正确"
      android:gravity="left"
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:visibility="invisible"
   />
   </LinearLayout>
   
    <LinearLayout
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:orientation="horizontal"
   
   >
   <TextView
      android:id="@+id/username"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:text="账号"
      android:gravity="left"
      android:textAppearance="?android:attr/textAppearanceMedium" 
   />
      
    <EditText
      android:id="@+id/txt_username"
      android:layout_height="wrap_content"
      android:layout_width="fill_parent"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:autoText="false"
      android:capitalize="none"
      android:gravity="fill_horizontal"
      android:textAppearance="?android:attr/textAppearanceMedium" 
      />
      </LinearLayout>
      
        <LinearLayout
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:orientation="horizontal"
   
   >
    <TextView
      android:id="@+id/password"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:text="密码"
      android:gravity="left"
      />
    <EditText
      android:id="@+id/txt_password"
      android:layout_height="wrap_content"
      android:layout_width="fill_parent"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:autoText="false"
      android:capitalize="none"
      android:gravity="fill_horizontal"
      android:textAppearance="?android:attr/textAppearanceMedium" 
     />
     </LinearLayout>
       <LinearLayout
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:orientation="horizontal"
   >
       <TextView
      android:id="@+id/nicename"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:text="昵称"
      android:gravity="left"
      />
    <EditText
      android:id="@+id/txt_nicename"
      android:layout_height="wrap_content"
      android:layout_width="fill_parent"
      android:layout_marginLeft="20dip"
      android:layout_marginRight="20dip"
      android:autoText="false"
      android:capitalize="none"
      android:gravity="fill_horizontal"
      android:textAppearance="?android:attr/textAppearanceMedium" 
     />
   
   </LinearLayout>
     
</LinearLayout>

后台业务逻辑:

	/*创建注册对话框*/
    private void CreateRegisterAlert()
    {
        //registerdialog
        AlertDialog.Builder ad =new AlertDialog.Builder(this);
        ad.setTitle("注册账号");
        ad.setView(ViewUtility.GetView(this,R.layout.sub_registerdialog));
        registerdialog=  ad.create();
        
        registerdialog.setButton("注册", new OnClickListener(){

            @Override
            public void onClick(DialogInterface arg0, int arg1) {
            
                EditText password=    (EditText)registerdialog.findViewById(R.id.txt_password);
                EditText account =(EditText)registerdialog.findViewById(R.id.txt_username);
                EditText nicename =(EditText)registerdialog.findViewById(R.id.txt_nicename);
                
                PassWord=password.getText().toString();
                Account=account.getText().toString();
                NiceName=nicename.getText().toString();
                //生成注册对话框
                m_Dialog=ProgressDialog.show(Main.this, "请等待...", "正在为你注册...",true);

                mRegsiterHandler.sleep(100);        
            }
        });
        
        registerdialog.setButton2("试  玩", new OnClickListener(){

            @Override
            public void onClick(DialogInterface arg0, int arg1) {
                ViewUtility.NavigateActivate(Main.this, SelectTheme.class);
            }
        });
        
        registerdialog.show();      
    }

    /*
     *定时注册程序
     * */
    private RegsiterHandler mRegsiterHandler = new RegsiterHandler();
    
    class RegsiterHandler extends Handler {

        @Override
        public void handleMessage(Message msg) {
              
            try{
                
                 //调用网络接口,实现注册指令
               Boolean flags=    UserDataServiceHelper.Register(Account, PassWord,NiceName);    
               if(flags)    
              {
                //保存注册信息
                UserDataWriteHelper uw=new UserDataWriteHelper(Main.this);
                uw.SaveUserInfoInDB("xuwenbing", Account);
                //提示注册成功
                 Toast.makeText(Main.this, "注册成功", Toast.LENGTH_SHORT).show();        
                 //转到主题页面
                   ViewUtility.NavigateActivate(Main.this, SelectTheme.class);
               }else
               {
                //失败 显示错误信息
                 Toast.makeText(Main.this, "注册失败", Toast.LENGTH_SHORT).show();
                 registerdialog.show();
                 registerdialog.findViewById(R.id.txt_loginerror).setVisibility(View.VISIBLE);
                }
            }
            catch(Exception e)
            {
                e.printStackTrace();                            
            }
            finally{
                m_Dialog.dismiss();        
            }
        }
        public void sleep(long delayMillis) {
            this.removeMessages(0);
            sendMessageDelayed(obtainMessage(0), delayMillis);
        }
    };

两个网络接口功能:

//调用网络接口,实现登陆指令
Boolean flags=    UserDataServiceHelper.Login(Account, PassWord);  
//调用网络接口,实现注册指令
Boolean flags=    UserDataServiceHelper.Register(Account, PassWord,NiceName);  
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