1. use ImageButton
try this, you can use ImageButton: - displays a button with an image (instead of text) that can be clicked or clicked by the user. By default, ImageButton looks like a regular button with a standard button background that changes color in different button states.
<ImageButton
android:id="@+id/btnMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:contentDescription="@string/btnMain_description"
android:elevation="10dp"
android:background="@android:drawable/dialog_holo_light_frame"
android:scaleType="centerInside"
android:src="@drawable/IMage"
/>
2. CardVirew
button card view,
compile 'com.android.support:cardview-v7:25.3.1'
,
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardElevation="10dp">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/disha"
android:text="@string/app_name" />
</android.support.v7.widget.CardView>