First Challenge : Closing loophole (Simple solution I guess)

Android Programming (4th Edition) 6. Your Second Activity
1

hello hello…
maybe I made the simple solution that works…

I set a default boolean value (false)

private var cheaterStatus = false

and used it inside the onClickListiner to change it to true in case the button was clicked

 showAnswerButton.setOnClickListener {
        val answerText = when{
            answerIsTrue -> R.string.true_button
            else -> R.string.false_button
        }
        answerTextView.setText(answerText)
        //create a function to return the result to MainActivity
        setAnswerShownResult(true)
        cheaterStatus = true
    }

Then i saved the result by overriding the onSave… function

 override fun onSaveInstanceState(savedInstanceState: Bundle) {
        super.onSaveInstanceState(savedInstanceState)
        Log.d(BOOLEAN_KEY, "onSave called.")
        savedInstanceState.putBoolean(BOOLEAN_KEY,cheaterStatus)
    }

and obviously retrieved it onCreate…

   //saving the status on configuration change.
        val cheatStatus = savedInstanceState?.getBoolean(BOOLEAN_KEY, false) ?: false
        setAnswerShownResult(cheatStatus)

and re-displayed the text of the answer if the retrieved boolean was true

  //if answer is true, show the text again
        if (cheatStatus) {
            val answerText = when {
                answerIsTrue -> R.string.true_button
                else -> R.string.false_button
            }
            answerTextView.setText(answerText)
        }

IT WORKED!

1 Like
2

The only problem I have is that when I rotate the device, the boolean text value dissapears but its still there

3

can’t get you… how did you saved it?

4

I saved it as a Boolean

5

share your code…
after you get the boolean from the savedInstanceState you should reassign local values with it and display the message again using the when

6

Okay give me some time I will do that