前回のあらすじ <shape android:shape="rectangle"> android:angle="270" android:startColor="#FFFFFF" android:type="radial" android:gradientRadius="135dp" android:centerX="0.2" android:centerY="0.2" <corners android:radius="10dp"/> <stroke android:width="1dp" android:color="#666666"/> bt1.setBackgroundDrawable…</stroke></corners></shape>