How to make a buttons bar slide in from bottom upon clicking checkbox in ListView?

Question

I have a listview with custom listadapter, which populates the listview with a checkbox and some textviews. When the user selects a checkbox, I need a button bar to slide in

Answer 1

Below is the runtime code implementation, modify accordingly if you need it for other purposes.

RelativeLayout rl = new RelativeLayout(this);
ImageButton btnBar = new ImageButton(this);

RelativeLayout.LayoutParams btnParams = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, 80);

btnParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);

btnBar.setLayoutParams(btnParams);
btnBar.setBackgroundColor(Color.RED); // test with red background

TranslateAnimation a = new TranslateAnimation(
                           Animation.RELATIVE_TO_PARENT, 0,
                           Animation.RELATIVE_TO_PARENT, 0,
                           Animation.RELATIVE_TO_PARENT, (float)100, 
                           Animation.RELATIVE_TO_PARENT, (float)0);

a.setDuration(1000);
btnBar.startAnimation(a); // add animation while start

rl.addView(btnBar);
setContentView(rl);