without entering username and password my application is logging
<p>i have created a login page when i enter username and password(if both are equal) it is used to login but the username and password are left blank and when i click on login button on emulator its shows the login succesful
it should not login when the username and password are left balnk</p>

<pre><code> @Override
         public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);

     txtUserName=(EditText)this.findViewById(R.id.txtUname);
     txtPassword=(EditText)this.findViewById(R.id.txtPwd);
     btnLogin=(Button)this.findViewById(R.id.btnLogin);
     btnLogin.setOnClickListener(new OnClickListener() {

             @Override
             public void onClick(View v) {            

                    if((txtUserName.getText().toString()).equals(txtPassword.getText().toString())){
                    Intent myIntent = new Intent(v.getContext(), SaveData.class);
                    startActivityForResult(myIntent, 1);
                    Toast.makeText(LoginappActivity.this, "Login Successful",Toast.LENGTH_LONG).show();
                    } else{
                    Toast.makeText(LoginappActivity.this, "Invalid Login",Toast.LENGTH_LONG).show(); 
                    }
               }
           });
 }           
       }
</code></pre>
