Drawable icons aren't displayed on Button

Question

Everytime I try to add some drawable icons to a button they are not displayed even if it's a button or a Material Button

   <Button
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                    android:text="Person"
                  android:drawableStart="@drawable/ic_person_pin_circle_black_24dp"
                  />
              <Button
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center"
                  android:text="Package"
                  android:layout_marginStart="10dp"
                  android:drawableStart="@drawable/ic_business_center_black_24dp"
                  />

In the left I have the "pin person" icon and the "briefcase " icon, but on the layout aren't display. Do you know what might cause this?

Answer 1

drawableStart corresponds to the drawable that will be draw to the begenning of the view according to the layout direction, but your direction could be bad ; you can change this direction like that :

android:gravity="center_vertical|center_horizontal|left"

or you can add them programmatically :

myButton.setCompoundDrawablesRelativeWithIntrinsicBounds(
    ContextCompat.getDrawable(this, R.drawable.ic_business_center_black_24dp), null, null, null);