CODEWITHSUNDEEP
androidtextview
Valdemar
Valdemar

Reputation: 2600

How to disable the TextView maxLines programmatically?

I'm having a hard time reseting the maxLines attribute of a TextView programmatically.

Just tried setting to 0 and it doesn't work. -1 crashes the application. I could use a simpler workaround and set the maxLines to 5000 but I don't want to do that.

Any ideas how to do that?

UPDATED

Well, I've found one problem.. I've set the Ellipsize as well... I'm just going to use the following workaround:

TextView questionDetail = (TextView) mQuestionDetailHeader.findViewById(R.id.desc);

questionDetail.setText(mCurrentQuestion.getQuestion());
questionDetail.setMaxLines(Integer.MAX_VALUE); //As in the android sourcecode
questionDetail.setEllipsize(null);

Upvotes: 59

Views: 30164

Answers (4)

alexgophermix
alexgophermix

Reputation: 4279

As there isn't yet an approved answer - the proper way to reset the maxlines property of the TextView is:

textView.setMaxLines(Integer.MAX_VALUE);

As per Valdemar's comment and this stackoverflow answer. Using -1 will cause an ArrayIndexOutOfBoundsException.

Keep in mind only END and MARQEE setEllipsize() settings will be respected for maxlines >= 2 according to the documentation:

If setMaxLines(int) has been used to set two or more lines, END and MARQUEE* are only supported (other ellipsizing types will not do anything).

Upvotes: 95

inazaruk
inazaruk

Reputation: 74780

The -1 should not crash your application. This actually what is used inside TextView by default:

case com.android.internal.R.styleable.TextView_maxLines:
            setMaxLines(a.getInt(attr, -1));
            break;

This piece of code shows, that when android:maxLines is not specified, then code uses -1 to set the value via setMaxLines() function.

I also made test application to verify my conclusions. And it works fine without crashing:

public class HelloWorld extends Activity
{           

    @Override
    public void onCreate(Bundle savedInstanceState) 
    {       
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity);

        TextView text = (TextView)findViewById(R.id.text);
        text.setMaxLines(-1);    
    }
}

Upvotes: -6

Paresh Mayani
Paresh Mayani

Reputation: 128428

if you want to have just a single line , then why don't you use:

    txtView.setSingleLine(true);

Upvotes: -3

u.jegan
u.jegan

Reputation: 833

For setting the maxLines for a text use mTextView.setMaxLines(0) or you have to programmatic-ally measure of the height text and multiply with the number of max line The result should set as the height of the textView

Upvotes: -2

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