CODEWITHSUNDEEP
androidandroid-studioandroid-activityandroid-edittext
Mark.
Mark.

Reputation: 49

how to change text in a TextView dynamically based on another TextView

Good morning everyone. I know from the title it's everything confused, so I will try to explain it better. I need to create an app for a medical project to calc HbA1c. I have 3 editText in which I type values of medical test. Each of three changes because of other one. For example: if I have 42 in one, the other one is 5.99%. And so on. I'm trying to make them change dynamically: change still during I'm writing. I tried using an OnCliclListener but I have to write the entire value.

I don't know if I explain myself as good to make you understand.

Thank you very much

Upvotes: 2

Views: 1538

Answers (2)

Abhi
Abhi

Reputation: 2285

Though answer by @Anjani is correct and you could use it but I would recommend using Butterknife. Here is the code:

@OnTextChanged(value = R.id.editText,
        callback = OnTextChanged.Callback.TEXT_CHANGED)
void afterCommentTextChange(CharSequence s, int start, int before, int count) {
  // Do what ever you want here when text is changed
}

Upvotes: 0

Anjani
Anjani

Reputation: 1573

Instead of using onClickListener, try using addTextChangedListener() and change your TextViews whenever onTextChanged() is called. By using this you can even change them while typing.

It looks something like this: 

editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence c, int i, int i2, int i3) {
            }

            @Override
            public void onTextChanged(CharSequence c, int i, int i2, int i3) {
                if (c.length() > 0) {
                } else {
                }
            }

            @Override
            public void afterTextChanged(Editable editable) {
            }
        });

Upvotes: 3

Related Questions