How to disable the TextView maxLines programmatically?

Question

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

Just tried setting to 0 and it doesn\'t wo

Answer 1

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

    txtView.setSingleLine(true);

Answer 2

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

Answer 3

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).

Answer 4

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);    
    }
}