View:

xml visualizer:

hex color:

ImageView:

<>

    android:src="@drawable/cake" //don't need to write the suffix,just name

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:scaleType="centerCrop"/>//no any white border,fully

developer.android.com

:sp is only for font:scaled pixel

google: TextView android