How do you change text to bold in Android?

To do this in the layout.xml file:

android:textStyle

Examples:

android:textStyle="bold|italic"

Programmatically the method is:

setTypeface(Typeface tf)

Sets the typeface and style in which the text should be displayed. Note that not all Typeface families actually have bold and italic variants, so you may need to use setTypeface(Typeface, int) to get the appearance that you actually want.

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Here is the solution

TextView questionValue = (TextView) findViewById(R.layout.TextView01);
questionValue.setTypeface(null, Typeface.BOLD);

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Simply you can do the following:

Set the attribute in XML

  android:textStyle="bold"

Programatically the method is:

TextView Tv = (TextView) findViewById(R.id.TextView);

Typeface boldTypeface = Typeface.defaultFromStyle(Typeface.BOLD);

Tv.setTypeface(boldTypeface);

Hope this helps you thank you.

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In XML

android:textStyle="bold" //only bold
android:textStyle="italic" //only italic
android:textStyle="bold|italic" //bold & italic

You can only use specific fonts sans, serif & monospace via xml, Java code can use custom fonts

android:typeface="monospace" // or sans or serif

Programmatically (Java code)

TextView textView = (TextView) findViewById(R.id.TextView1);

textView.setTypeface(Typeface.SANS_SERIF); //only font style
textView.setTypeface(null,Typeface.BOLD); //only text style(only bold)
textView.setTypeface(null,Typeface.BOLD_ITALIC); //only text style(bold & italic)
textView.setTypeface(Typeface.SANS_SERIF,Typeface.BOLD); 
                                         //font style & text style(only bold)
textView.setTypeface(Typeface.SANS_SERIF,Typeface.BOLD_ITALIC);
                                         //font style & text style(bold & italic)

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For case where you are using custom fonts, but do not have bold typeface for the font you can use:

myTextView.setText(Html.fromHtml("<b>" + myText + "</b>");

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From the XML you can set the textStyle to bold as below

<TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="Bold text"
   android:textStyle="bold"/>

You can set the TextView to bold programmatically as below

textview.setTypeface(Typeface.DEFAULT_BOLD);

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Set the attribute

android:textStyle="bold"

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It's very easy

setTypeface(Typeface.DEFAULT_BOLD);

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If you're drawing it then this will do it:

TextPaint.setFlags(Paint.FAKE_BOLD_TEXT_FLAG);

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In the ideal world you would set the text style attribute in you layout XML definition like that:

<TextView
    android:id="@+id/TextView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textStyle="bold"/>

There is a simple way to achieve the same result dynamically in your code by using setTypeface method. You need to pass and object of Typeface class, which will describe the font style for that TextView. So to achieve the same result as with the XML definition above you can do the following:

TextView Tv = (TextView) findViewById(R.id.TextView);
Typeface boldTypeface = Typeface.defaultFromStyle(Typeface.BOLD);
Tv.setTypeface(boldTypeface);

The first line will create the object form predefined style (in this case Typeface.BOLD, but there are many more predefined). Once we have an instance of typeface we can set it on the TextView. And that's it our content will be displayed on the style we defined.

I hope it helps you a lot.For better info you can visit

http://developer.android.com/reference/android/graphics/Typeface.html

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Define a new style with the format you want in the style.xml file in the values folder

<style name="TextViewStyle" parent="AppBaseTheme">
    <item name="android:textStyle">bold</item>
    <item name="android:typeface">monospace</item>
    <item name="android:textSize">16sp</item>
    <item name="android:textColor">#5EADED</item>

</style>

Then apply this style to the TextView by writing the following code with the properties of the TextView

style="@style/TextViewStyle"

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Through XML:

 android:textStyle="bold"

Through Java:

//Let's say you have a textview 
textview.setTypeface(null, Typeface.BOLD);

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The best way to go is:

TextView tv = findViewById(R.id.textView);
tv.setTypeface(Typeface.DEFAULT_BOLD);

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in file .xml, set

android:textStyle="bold" 

will set text type is bold.

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4 ways to make Android TextView bold- Full answer is here.

Using android:textStyle attribute Use bold|italic for bold and italic. using setTypeface() method textview2.setTypeface(null, Typeface.BOLD); textview2.setText("TEXTVIEW 2"); HtmlCompat.fromHtml() method, Html.fromHtml() was deprecated in API level 24. String html="This is TEXTVIEW 3"; textview3.setText(HtmlCompat.fromHtml(html,Typeface.BOLD));

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Assuming you are a new starter on Android Studio, Simply you can get it done in design view XML by using

android:textStyle="bold"          //to make text bold
android:textStyle="italic"        //to make text italic
android:textStyle="bold|italic"   //to make text bold & italic

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You can use this for font

create a Class Name TypefaceTextView and extend the TextView

private static Map mTypefaces;

public TypefaceTextView(final Context context) {
    this(context, null);
}

public TypefaceTextView(final Context context, final AttributeSet attrs) {
    this(context, attrs, 0);
}

public TypefaceTextView(final Context context, final AttributeSet attrs, final int defStyle) {
    super(context, attrs, defStyle);
    if (mTypefaces == null) {
        mTypefaces = new HashMap<String, Typeface>();
    }

    if (this.isInEditMode()) {
        return;
    }

    final TypedArray array = context.obtainStyledAttributes(attrs, styleable.TypefaceTextView);
    if (array != null) {
        final String typefaceAssetPath = array.getString(
                R.styleable.TypefaceTextView_customTypeface);

        if (typefaceAssetPath != null) {
            Typeface typeface = null;

            if (mTypefaces.containsKey(typefaceAssetPath)) {
                typeface = mTypefaces.get(typefaceAssetPath);
            } else {
                AssetManager assets = context.getAssets();
                typeface = Typeface.createFromAsset(assets, typefaceAssetPath);
                mTypefaces.put(typefaceAssetPath, typeface);
            }

            setTypeface(typeface);
        }
        array.recycle();
    }
}

paste the font in the fonts folder created in the asset folder

<packagename.TypefaceTextView
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1.5"
        android:gravity="center"
        android:text="TRENDING TURFS"
        android:textColor="#000"
        android:textSize="20sp"
        app:customTypeface="fonts/pompiere.ttf" />**here pompiere.ttf is the font name**

Place the lines in the parent layout in the xml

 xmlns:app="http://schemas.android.com/apk/res/com.mediasters.wheresmyturf"
xmlns:custom="http://schemas.android.com/apk/res-auto"

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In my case, Passing value through string.xml worked out with html Tag..

<string name="your_string_tag"> <b> your_text </b></string>

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editText.setTypeface(Typeface.createFromAsset(getAssets(), ttfFilePath));
etitText.setTypeface(et.getTypeface(), Typeface.BOLD);

will set both typface as well as style to Bold.

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In Kotlin we can do in one line

 TEXT_VIEW_ID.typeface = Typeface.defaultFromStyle(Typeface.BOLD)

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You can do this

ty.setTypeface(Typeface.createFromAsset(ctx.getAssets(), "fonts/magistral.ttf"), Typeface.BOLD);

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textView.setPaintFlags(textView.getPaintFlags() | Paint.FAKE_BOLD_TEXT_FLAG)

To remove, use

textView.setPaintFlags(textView.getPaintFlags() & ~Paint.FAKE_BOLD_TEXT_FLAG)

Or in Kotlin:

fun TextView.makeBold() {
    this.paintFlags = this.paintFlags or Paint.FAKE_BOLD_TEXT_FLAG
}

fun TextView.removeBold() {
    this.paintFlags = this.paintFlags and (Paint.FAKE_BOLD_TEXT_FLAG.inv())
}

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