What is the difference between setBackgroundResource and setBackgroundDrawable

Question

Could anyone tell me what is the difference between setBackgroundResource(resourceid) and setBackgroundDrawable(getResource().getDrawable(drawableid)) in android?

Answer 1

You can have a look at the Android source code for the View class yourself and find out that there is very little difference!

public void setBackgroundResource(int resid) {
    if (resid != 0 && resid == mBackgroundResource) {
        return;
    }

    Drawable d= null;
    if (resid != 0) {
        d = mResources.getDrawable(resid);
    }
    setBackground(d);

    mBackgroundResource = resid;
}

And setBackground() just calls through to setBackgroundDrawable()...

public void setBackground(Drawable background) {
    //noinspection deprecation
    setBackgroundDrawable(background);
}