How to Make Android TextView Text Bold

In order to make the text of TextView bold, we can make use of the XML attribute textStyle with a value as bold,

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="My Text"
        android:textAlignment="center"
        android:textStyle="bold"
        android:id="@+id/myTextView"/>
</LinearLayout>

You may also achieve this programmatically by using the method setTypeface,

TextView textView = findViewById(R.id.myTextView);
Typeface bold = Typeface.defaultFromStyle(Typeface.BOLD);
textView.setTypeface(bold);