android implements OnClickListener 使用

publicclass LoginExampleImplementsextends Activityimplements OnClickListener {

 

   @Override

   public voidonCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

   ...       

       // Set Click Listener

       btnLogin.setOnClickListener(this);

       btnCancel.setOnClickListener(this);

   }

   @Override

   public voidonClick(View v) {

       if(v==btnLogin) {

           // Check Login

           String username = etUsername.getText().toString();

           String password = etPassword.getText().toString();

           

           if(username.equals("guest") && password.equals("guest")){

               lblResult.setText("Login successful.");

           } else {

               lblResult.setText("Login failed. Username and/or password doesn't match.");

           }

       } else if(v==btnCancel) {

           // Close the application

           finish();

       }

   }

}