Android 登入帳號 (不登入 就不給我用嗎？)

 public class Login extends Activity {  
      EditText txtAcct;  
      EditText txtPW;  
      Button btnLogin;  
      Button btnCancel;  
   /** Called when the activity is first created. */  
   @Override  
   public void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState);  
     setContentView(R.layout.main);  
     txtAcct=(EditText)this.findViewById(R.id.txtAcct);  
     txtPW=(EditText)this.findViewById(R.id.txtPwd);  
     btnLogin=(Button)this.findViewById(R.id.btnLogin);  
     btnLogin=(Button)this.findViewById(R.id.btnLogin);  
     btnLogin.setOnClickListener(new View.OnClickListener() {  
                @Override  
                public void onClick(View v) {  
                     // TODO Auto-generated method stub  
                     if(txtAcct.getText().toString().equals("acct")&&  
                               txtPW.getText().toString().equals("acct")){  
                      Toast.makeText(Login.this, "登入成功",Toast.LENGTH_LONG).show();  
                     } else{  
                      Toast.makeText(Login.this, "登入失敗",Toast.LENGTH_LONG).show();  
                     }  
                }  
           });  
   }  
 }