Question

login.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            if( username_text.getText().toString() == "admin" &&
                    pass_text.getText().toString() == "password"){

                startActivityForResult(i, ACTIVITY_CREATE);

            }else{
                Toast.makeText(gps_gui.this, "Your username or password is not correct! Please, insert again",
                        Toast.LENGTH_SHORT).show();
                clearEditText();
            }
        }

    });

I’m try to check it, I found it not go to if condition.

Answer 1

When using java, you must compare Strings using the String.equals(String) method. The == comparison checks to see if the String object values are equal, which undoubtedly they are not. Try to change you example to :

"admin".equals(username_text.getText().toString()) &&"password".equals(pass_text.getText().toString())

Its also smart to put the static string first, in case the string value of the value being checked is null.