main_activity.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="iterator.ir.a004.MainActivity"> <Button android:text="Button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:id="@+id/button" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" app:srcCompat="@drawable/ic_alarm_black_24dp" android:layout_below="@+id/button" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_marginLeft="10dp" android:layout_marginStart="10dp" android:id="@+id/imageButton" /> <Button android:text="Button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/button2" android:layout_below="@+id/imageButton" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:drawableLeft="@drawable/ic_alarm_black_24dp" /> </RelativeLayout>
References
https://www.youtube.com/watch?v=EJ43o11ynGg&list=PLshdtb5UWjSp0879mLeCsDQN6L73XBZTk&index=9
https://github.com/mhdr/AndroidSamples/tree/master/004