CODEWITHSUNDEEP
javaandroidtextview
Cris
Cris

Reputation: 12204

How to change a TextView's style at runtime

I have an android app on which, when the user taps a TextView, I would like to apply a defined style.

I thought to find a textview.setStyle() but it doesn't exists. I tried 

textview.setTextAppearance();

but it does not work.

Upvotes: 103

Views: 107904

Answers (7)

Glenn
Glenn

Reputation: 3348

I did this by creating a new XML file res/values/style.xml as follows:

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="boldText">
        <item name="android:textStyle">bold|italic</item>
        <item name="android:textColor">#FFFFFF</item>
    </style>

    <style name="normalText">
        <item name="android:textStyle">normal</item>
        <item name="android:textColor">#C0C0C0</item>
    </style>

</resources>

I also have an entries in my "strings.xml" file like this:

<color name="highlightedTextViewColor">#000088</color>
<color name="normalTextViewColor">#000044</color>

Then, in my code I created a ClickListener to trap the tap event on that TextView: EDIT: As from API 23 'setTextAppearance' is deprecated

    myTextView.setOnClickListener(new View.OnClickListener() {
                public void onClick(View view){
                    //highlight the TextView
                    //myTextView.setTextAppearance(getApplicationContext(), R.style.boldText);
    if (Build.VERSION.SDK_INT < 23) {
       myTextView.setTextAppearance(getApplicationContext(), R.style.boldText);
    } else {
       myTextView.setTextAppearance(R.style.boldText);
    }
     myTextView.setBackgroundResource(R.color.highlightedTextViewColor);
                }
            });

To change it back, you would use this:

if (Build.VERSION.SDK_INT < 23) {
    myTextView.setTextAppearance(getApplicationContext(), R.style.normalText);
} else{
   myTextView.setTextAppearance(R.style.normalText);
}
myTextView.setBackgroundResource(R.color.normalTextViewColor);

Upvotes: 144

Md. Sajedul Karim
Md. Sajedul Karim

Reputation: 7095

try this line of code. 

textview.setTypeface(textview.getTypeface(), Typeface.DEFAULT_BOLD);

here , it will get current Typeface from this textview and replace it using new Typeface. New typeface here is DEFAULT_BOLD but you can apply many more.

Upvotes: 1

akohout
akohout

Reputation: 1811

Depending on which style you want to set, you have to use different methods. TextAppearance stuff has its own setter, TypeFace has its own setter, background has its own setter, etc.

Upvotes: 0

DKDiveDude
DKDiveDude

Reputation: 1131

Like Jonathan suggested, using textView.setTextTypeface works, I just used it in an app a few seconds ago.

textView.setTypeface(null, Typeface.BOLD); // Typeface.NORMAL, Typeface.ITALIC etc.

Upvotes: 91

sfera
sfera

Reputation: 1178

i found textView.setTypeface(Typeface.DEFAULT_BOLD); to be the simplest method.

Upvotes: 2

Azhar
Azhar

Reputation: 20670

TextView tvCompany = (TextView)findViewById(R.layout.tvCompany);
tvCompany.setTypeface(null,Typeface.BOLD);

You an set it from code. Typeface

Upvotes: 12

GSree
GSree

Reputation: 2898

See doco for setText() in TextView http://developer.android.com/reference/android/widget/TextView.html

To style your strings, attach android.text.style.* objects to a SpannableString, or see the Available Resource Types documentation for an example of setting formatted text in the XML resource file.

Upvotes: 0

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