Set width of Button in Android

Question

How can I set a fixed width for an Android button? Everytime I try to set a fixed width it fills the current parent (the RelativeView). Here is my XML:

Answer 1

Instead of android:layout_width="wrap_content" you can use a fixed pixelsize like for example android:layout_width="20px" or a better way: android:layout_width="20dp"

you can also set the width programatically in the code: Button.setWidth(int width)

Concerning your update:

I don't know if it is a good solution, but i works. You could use

 DisplayMetrics metrics = new DisplayMetrics();
 getWindowManager().getDefaultDisplay().getMetrics(metrics);

to read the screen resolution and then set the button sizes according to metrics.widthPixel and metrics.heightPixel