Is it possible to know the number of visible words? not full length?

Question

I add to textView string from 100 words. But visible only 10 words. How do I know that only 10 words?

Log.e("asdas", String.valueOf(messageView.length()));

not working

Sorry if this question is too complex :((

:). set to textView max lines 2. add text from 1000 words and you will see what I mean — Batista2015, Mar 10 '15 at 17:39
As a starting point use `Paint.measureText` method. It should suffice all your needs. — Dmitry Zaytsev, Mar 10 '15 at 17:42
not)). for ellipsis there is an attribute ellipsize in TextView. this is not — Batista2015, Mar 10 '15 at 17:46
Well. ask the question a different way)). How to split the text between the 2? — Batista2015, Mar 10 '15 at 17:47
See [here](http://stackoverflow.com/a/8798989/4428462) and [here](http://stackoverflow.com/q/2239356/4428462) — Jonas Czech, Mar 10 '15 at 18:55

score 1 · Accepted Answer · answered Mar 10 '15 at 19:10

1

I don't know WHY you need this, but here it goes:

int start = textView.getLayout().getLineStart(0);
int end = textView.getLayout().getLineEnd(textView.getLineCount() - 1);
String displayed = textView.getText().toString().substring(start, end);
int visibleWords = displayed.split(" ").length

answered Mar 10 '15 at 19:10

Christian

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Not! int start = messageView.getLayout().getLineStart(1); Caused by: java.lang.NullPointerException at com.example.Poetry.PageAuthors.SetAuthorText(PageAuthors.java:116) This is not working. – Batista2015 Mar 10 '15 at 20:31
Did you understand the code? Or simply put it into your code and expected to work? Did getLayout() return anything different from null? – Christian Mar 10 '15 at 20:39

Victor Marcoianu · Answer 2 · 2020-10-25T16:08:45.423

For anybody interested and getting the NullPointerException, here's a working example of Christian's answer:

    ViewTreeObserver vto = textView.getViewTreeObserver();
        vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                int start = textView.getLayout().getLineStart(0);
                int end = textView.getLayout().getLineEnd(textView.getLineCount() - 1);
                String displayed = textView.getText().toString().substring(start, end);
                int visibleWords = displayed.split(" ").length;
            }
        });

Is it possible to know the number of visible words? not full length?

2 Answers2