android 新创建的项目r.layout.main有红叉,Android studio新建文件出现setContentView(R.layout.activity_main);中的R标红错误解决方.
android:fillColor="#008577"android:pathData="M0,0h108v108h-108z"/>android:fillColor="#00000000"android:pathData="M9,0L9,108"android:strokeWidth="0.8"android:strokeColor="#33FFFFFF"/>android:fillColor=