Android开发中实现用户注册和登陆的代码实例分享

2019-11-26 14:48:04

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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。

2015121161004202.jpg (480×800)

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。

2015121161036365.jpg (480×800)

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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