Android how to make button text bold when pressed or focussed

You could try putting the bold code inside the click event for the button:

final Button button = (Button) findViewById(R.id.button_id);         button.setOnClickListener(new View.OnClickListener() {             public void onClick(View v) {                 // Set bold on click                 button.setTypeface(null, Typeface.BOLD);             }         });

Attention! See update below

You could create your own style.xml in which you define the text style. In your selector you can reference to the style.style.xml

<style name="myStyle">      <item name="android:textSize">9px</item>    <item name="android:gravity">center_horizontal</item>    <item name="android:textColor">#fff</item>    <item name="android:textStyle">bold</item></style>

And in your selector

<selector xmlns:android="http://schemas.android.com/apk/res/android"><item android:state_focused="true"      android:state_pressed="false"       style="@style/myStyle" /> </selector>

Update 2020: My answer is more than 10 years old. It doesn´t work anymore!

Styles are not allowed in selectors. Reference

And to make the text bold, use this code:

btn_reset.setOnTouchListener(new View.OnTouchListener() {    @Override    public boolean onTouch(View v, MotionEvent event) {        switch (event.getAction()) {            // When the user clicks the Button            case MotionEvent.ACTION_DOWN:                btn_reset.setTypeface(Typeface.DEFAULT_BOLD);                break;            // When the user releases the Button            case MotionEvent.ACTION_UP:                btn_reset.setTypeface(Typeface.DEFAULT);                break;        }        return false;    }});