CODEWITHSUNDEEP
androidtextview
Batista2015
Batista2015

Reputation: 37

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

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

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 :((

Upvotes: 1

Views: 428

Answers (2)

Victor Marcoianu
Victor Marcoianu

Reputation: 630

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;
            }
        });

Upvotes: 0

Christian
Christian

Reputation: 7320

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

Upvotes: 1

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