can the font type of an Edittext,Radio Button and CheckBox be changed in Android

Yes you have to follow the same code wht u have mentioned here.This will work for other controls too like Edittext,CheckBox etc.

The selected answer was missing the code, so here it is:

EditText

EditText editText = (EditText) layout.findViewById(R.id.edittext);
editText.setText(msg);
Typeface font = Typeface.createFromAsset(getAssets(), "fonts/myfont.ttf");
editText.setTypeface(font);

RadioButton

RadioButton radioButton = (RadioButton) layout.findViewById(R.id.radiobutton);
radioButton.setText(msg);
Typeface font = Typeface.createFromAsset(getActivity().getAssets(), "fonts/myfont.ttf");
radioButton.setTypeface(font);

CheckBox

CheckBox checkBox = (CheckBox) layout.findViewById(R.id.checkbox);
checkBox.setText(msg);
Typeface font = Typeface.createFromAsset(getAssets(), "fonts/myfont.ttf");
checkBox.setTypeface(font);

Multiple Views

If you need to do this for multiple views across your application, then it may be easier to make a subclass of your EditText, RadioButton, or CheckBox. This subclass sets the font. Below is an example for CheckBox.

public class MyCheckBox extends CheckBox {

    // Constructors
    public MyCheckBox(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }
    public MyCheckBox(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }
    public MyCheckBox(Context context) {
        super(context);
        init();
    }

    // This class requires myfont.ttf to be in the assets/fonts folder
    private void init() {
        Typeface tf = Typeface.createFromAsset(getContext().getAssets(),
                "fonts/myfont.ttf");
        setTypeface(tf);
    }
}

It can be used in xml as follows:

<com.example.projectname.MyCheckBox
    android:id="@+id/checkbox"
    android:text="@string/msg"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:checked="true"/>