這期內容當中小編將會給大家帶來有關Android中怎么利用系統對話框實現登陸注冊功能，文章內容豐富且以專業的角度為大家分析和敘述，閱讀完這篇文章希望大家可以有所收獲。

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界面布局xml文件

2.2 后臺業務邏輯

/*       * 創建用戶登陸的對話框       * 登陸界面包含兩個按鈕       * 1按鈕為登陸       * 2按鈕為不登陸試玩       * */      private void CreateLoginAlert()      {          AlertDialog.Builder ad =new AlertDialog.Builder(this);          ad.setTitle("賬號登陸");          ad.setView(ViewUtility.GetView(this,R.layout.sub_logindialog));          adadi=  ad.create();          /*               */          adi.setButton("登陸", 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();                  //生成登陸對話框                  m_Dialog=ProgressDialog.show(Main.this, "請等待...", "正在為你登陸...",true);                   mRedrawHandler.sleep(100);                      }          });                 adi.setButton2("試  玩", new OnClickListener(){              @Override              public void onClick(DialogInterface arg0, int arg1) {                  ViewUtility.NavigateActivate(Main.this, SelectTheme.class);              }          });                  adi.show();                 //設置注冊點擊事件          TextView  register=(TextView)adi.findViewById(R.id.txt_toregister);          register.setOnClickListener(new  TextView.OnClickListener()          {             public void onClick(View v){                 //創建注冊對話框               CreateRegisterAlert();                 adi.dismiss();                              }         });           }         /*       *定時線程做驗證用       * */      private RefreshHandler mRedrawHandler = new RefreshHandler();            class RefreshHandler extends Handler {           @Override          public void handleMessage(Message msg) {                              try{                                     //調用網絡接口，實現登陸指令                 Boolean flags=    UserDataServiceHelper.Login(Account, PassWord);                     if(flags)                    {                  //保存登陸信息                  UserDataWriteHelper uw=new UserDataWriteHelper(Main.this);                  uw.SaveUserInfoInDB("xuwenbing", Account);                  //提示登陸成功                   Toast.makeText(Main.this, "登陸成功", Toast.LENGTH_SHORT).show();                           //轉到主題頁面                     ViewUtility.NavigateActivate(Main.this, SelectTheme.class);                 }else                 {                  //失敗 顯示錯誤信息                   Toast.makeText(Main.this, "登陸失敗", 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);          }      };

 3 注冊對話框的實現
 3.1  對話框界面布局xml文件

3.2  后臺業務邏輯

/*創建注冊對話框*/      private void CreateRegisterAlert()      {          //registerdialog          AlertDialog.Builder ad =new AlertDialog.Builder(this);          ad.setTitle("注冊賬號");          ad.setView(ViewUtility.GetView(this,R.layout.sub_registerdialog));          registerdialog=  ad.create();                  registerdialog.setButton("注冊", 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();                  //生成注冊對話框                  m_Dialog=ProgressDialog.show(Main.this, "請等待...", "正在為你注冊...",true);                  mRegsiterHandler.sleep(100);                      }          });                  registerdialog.setButton2("試  玩", new OnClickListener(){              @Override              public void onClick(DialogInterface arg0, int arg1) {                  ViewUtility.NavigateActivate(Main.this, SelectTheme.class);              }          });                  registerdialog.show();            }      /*       *定時注冊程序       * */      private RegsiterHandler mRegsiterHandler = new RegsiterHandler();            class RegsiterHandler extends Handler {           @Override          public void handleMessage(Message msg) {                              try{                                     //調用網絡接口，實現注冊指令                 Boolean flags=    UserDataServiceHelper.Register(Account, PassWord,NiceName);                     if(flags)                    {                  //保存注冊信息                  UserDataWriteHelper uw=new UserDataWriteHelper(Main.this);                  uw.SaveUserInfoInDB("xuwenbing", Account);                  //提示注冊成功                   Toast.makeText(Main.this, "注冊成功", Toast.LENGTH_SHORT).show();                           //轉到主題頁面                     ViewUtility.NavigateActivate(Main.this, SelectTheme.class);                 }else                 {                  //失敗 顯示錯誤信息                   Toast.makeText(Main.this, "注冊失敗", 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);          }      };

上述就是小編為大家分享的Android中怎么利用系統對話框實現登陸注冊功能了，如果剛好有類似的疑惑，不妨參照上述分析進行理解。如果想知道更多相關知識，歡迎關注創新互聯行業資訊頻道。