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="#00000000"android:pathData="M19,0L19,108"android:strokeWidth="0.8"android:strokeColor="#33FFFFFF" />

android:fillColor="#00000000"android:pathData="M29,0L29,108"android:strokeWidth="0.8"android:strokeColor="#33FFFFFF" />

android:fillColor="#00000000"android:pathData="M39,0L39,108"android:strokeWidth="0.8"android:strokeColor="#33FFFFFF" />

android:fillColor="#00000000"android:pathData="M49,0L49,108"

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