Question

Normal button looks like:

Now, please let me know, How can i make a simple button same as an attached image button (i.e. button corner shape is round and also there is no gap between two buttons)

Answer 1

9-patch would work fine here, but I try to avoid them since it’s hard for me to do them 🙁

You can try having a selector and using a shape for each state:

The shape would look like this:

<?xml version="1.0" encoding="UTF-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
     android:shape="rectangle">

    <solid android:color="#AAFFFFFF"/>

    <corners android:bottomRightRadius="7dp"
        android:bottomLeftRadius="7dp" 
        android:topLeftRadius="7dp"
        android:topRightRadius="7dp"/>
</shape>