How Android EditText inputType attribute with value textMultiLine breaks the lines?

Question

I have an EditText field with the attribute inputType set to textMultiLine, this breaks a text into several lines, so far so good. I attached a TextWatcher to the EditText so I can check for any change. In the method afterTextChanged I want to check when a line of text is broken into 2 lines, but the textMultiLine attribute does not add a new line char, so my question is:

How can I check how many lines of text have been written in an EditText with the inputType attribute set to textMultiLine if there is not new line character?

Answer 1

No need to use a Runnable or post to a message queue. Simply call EditText.getLineCount() in your afterTextChanged() method:

final EditText editText = /* your EditText here */;
editText.addTextChangedListener(new TextWatcher() {
    ...
    @Override
    public void afterTextChanged(Editable editable) {
        int numLines = editText.getLineCount();
        // your code here
    }
});

Answer 2

Try this:

editText.post(new Runnable() {
    @Override
    public void run() {
        Log.d(TAG, "Line count: " + editText.getLineCount());
    }
});

getLineCount() will be called on UI thread when editText rendering is completed.