Question

Here is the scenario : I have a gui which contains two buttons.Now is there any way by which second button is clickable only after first button is clicked ?

Answer 1

say you have activity with two buttons defined in the xml layout : button1 and button2

in activity onCreate method write:

button2.setEnabled(false);

In the in click listener of first button write

button2.setEnabled(true);

so finally
in onCreate method of the activity we have

button2.setEnabled(false);

private OnClickListener l = new OnClickListener() {
    public void onClick(View v) {
      button2.setEnabled(true);
    }
};

button1.setOnClickListener(l);