Android - set TextView TextStyle programmatically?

Is there a way to set the textStyle attribute of a TextView programmatically? There doesn't appear to be a setTextStyle() method.

To be clear, I am not talking about View / Widget styles! I am talking about the following:

<TextView
  android:id="@+id/my_text"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:text="Hello World"
  android:textStyle="bold" />

textview.setTypeface(Typeface.DEFAULT_BOLD);

setTypeface is the Attribute textStyle.

As Shankar V added, to preserve the previously set typeface attributes you can use:

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

Let's say you have a style called RedHUGEText on your values/styles.xml:

<style name="RedHUGEText" parent="@android:style/Widget.TextView">
    <item name="android:textSize">@dimen/text_size_huge</item>
    <item name="android:textColor">@color/red</item>
    <item name="android:textStyle">bold</item>
</style>

Just create your TextView as usual in the XML layout/your_layout.xml file, let's say:

<TextView android:id="@+id/text_view_title" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content 
    android:text="FOO" />

And in the java code of your Activity you do this:

TextView textViewTitle = (TextView) findViewById(R.id.text_view_title);
textViewTitle.setTextAppearance(this, R.style.RedHUGEText);

It worked for me! And it applied color, size, gravity, etc. I've used it on handsets and tablets with Android API Levels from 8 to 17 with no problems. Note that as of Android 23, that method has been deprecated. The context argument has been dropped, so the last line would need to be:

textViewTitle.setTextAppearance(R.style.RedHUGEText);

To support all API levels use androidX TextViewCompat

TextViewCompat.setTextAppearance(textViewTitle, R.style.RedHUGEText)

Remember... this is useful only if the style of the text really depends on a condition on your Java logic or you are building the UI "on the fly" with code... if it doesn't, it is better to just do:

<TextView android:id="@+id/text_view_title" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content 
    android:text="FOO" 
    style="@style/RedHUGEText" />

You can always have it your way!

Search for setTextAppearance or also setTextTypeface. There is similar question on stackoverflow: https://stackoverflow.com/questions/4630440/how-to-change-a-textviews-style-at-runtime

So many way to achieve this task some are below:-

1.

String text_view_str = "<b>Bolded text</b>, <i>italic text</i>, even <u>underlined</u>!";
TextView tv = (TextView)findViewById(R.id.ur_text_view_id);
tv.setText(Html.fromHtml(text_view_str));

2.

tv.setTypeface(null, Typeface.BOLD);
tv.setTypeface(null, Typeface.ITALIC);
tv.setTypeface(null, Typeface.BOLD_ITALIC);
tv.setTypeface(null, Typeface.NORMAL);

3.

SpannableString spannablecontent=new SpannableString(o.content.toString());
spannablecontent.setSpan(new StyleSpan(android.graphics.Typeface.BOLD_ITALIC), 
                         0,spannablecontent.length(), 0);
// set Text here
tt.setText(spannablecontent);

4.

<?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>

 tv.setTextAppearance(getApplicationContext(), R.style.boldText);
                

or if u want through xml

android:textStyle="normal"
android:textStyle="normal|bold"
android:textStyle="normal|italic"
android:textStyle="bold"
android:textStyle="bold|italic"

• Kotlin Version

To retain current font in addition to text style:

textView.apply {
    setTypeface(typeface, Typeface.NORMAL)
    // or
    setTypeface(typeface, Typeface.BOLD)
    // or
    setTypeface(typeface, Typeface.ITALIC)
    // or
    setTypeface(typeface, Typeface.BOLD_ITALIC)
}

This question is asked in a lot of places in a lot of different ways. I originally answered it here but I feel it's relevant in this thread as well (since i ended up here when I was searching for an answer).

There is no one line solution to this problem, but this worked for my use case. The problem is, the 'View(context, attrs, defStyle)' constructor does not refer to an actual style, it wants an attribute. So, we will:

1. Define an attribute
2. Create a style that you want to use
3. Apply a style for that attribute on our theme
4. Create new instances of our view with that attribute

In 'res/values/attrs.xml', define a new attribute:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <attr name="customTextViewStyle" format="reference"/>
    ...
</resources>    

In res/values/styles.xml' I'm going to create the style I want to use on my custom TextView

<style name="CustomTextView">
    <item name="android:textSize">18sp</item>
    <item name="android:textColor">@color/white</item>
    <item name="android:paddingLeft">14dp</item>
</style>

In 'res/values/themes.xml' or 'res/values/styles.xml', modify the theme for your application / activity and add the following style:

<resources>
    <style name="AppBaseTheme" parent="android:Theme.Light">
        <item name="@attr/customTextViewStyle">@style/CustomTextView</item>
    </style>
    ... 
</resources>

Finally, in your custom TextView, you can now use the constructor with the attribute and it will receive your style

public class CustomTextView extends TextView {

    public CustomTextView(Context context) {
       super(context, null, R.attr.customTextView);
    }
}

It's worth noting that I repeatedly used customTextView in different variants and different places, but it is in no way required that the name of the view match the style or the attribute or anything. Also, this technique should work with any custom view, not just TextViews.

This worked for me

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

or

textview.setTypeface(Typeface.DEFAULT_BOLD);

Since setTextAppearance(resId) is only available for API 23 and above, use:

TextViewCompat.setTextAppearance(textViewGoesHere, resId)

This method is internally implemented as follows:

public static void setTextAppearance(@NonNull TextView textView, @StyleRes int resId) {
    if (Build.VERSION.SDK_INT >= 23) {
        textView.setTextAppearance(resId);
    } else {
        textView.setTextAppearance(textView.getContext(), resId);
    }
}

I´ve resolved it with two simple methods.

Follow the explanation.

My existing style declaration:

<style name="SearchInfoText">
    <item name="android:layout_width">wrap_content</item>
    <item name="android:layout_height">wrap_content</item>
    <item name="android:textSize">24sp</item>
    <item name="android:textColor">@color/Church_Grey</item>
    <item name="android:shadowColor">@color/Shadow_Church</item>
    <item name="android:shadowRadius">3</item>
    <item name="android:shadowDx">1</item>
    <item name="android:shadowDy">1</item>
</style>

My Android Java code:

	TextView locationName = new TextView(getSupportActivity());
	locationName.setId(IdGenerator.generateViewId());
	locationName.setText(location.getName());
	locationName.setLayoutParams(super.centerHorizontal());
	locationName.setTextSize(24f);
	locationName.setPadding(0, 0, 0, 15);
	locationName.setTextColor(getResources().getColor(R.color.Church_Grey));
	locationName.setShadowLayer(3, 1, 1,  getResources().getColor(R.color.Shadow_Church));

Regards.

You may try this one

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                textView.setTextAppearance(R.style.Lato_Bold);
            } else {
                textView.setTextAppearance(getActivity(), R.style.Lato_Bold);
            }

As mentioned here, this feature is not currently supported.

This Works For Me

msg.setTypeface(Typeface.defaultFromStyle(Typeface.NORMAL));
OR
TextView.setTypeface(msg.getTypeface(),Typeface.NORMAL);

Instead Off

TextView.setTypeface(Typeface.DEFAULT_BOLD);