RelativeLayout "Couldn't resolve resource..." Android

Question

When using the below code, I get an error "Couldn't resolve resource @id/item1" Why is this? id/item1 is added before I use it, so I'm not sure why this is coming up.

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:orientation="vertical" >      <ImageView         android:id="@+id/item1"         android:layout_width="50dip"         android:layout_height="50dip"         android:src="@drawable/noimage" />     <TextView                  android:id="@+id/item2"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:text="Title"         android:padding="3dip"          android:textSize="20dip"         android:layout_toRightOf="@id/item1"/>     <TextView                  android:id="@+id/item3"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:text="Content"         android:padding="3dip"          android:textSize="20dip"         android:layout_below="@id/item1"/>  </RelativeLayout> 

Answer 1

I don't have this error with your code.

Make sure you don't have errors in other resources (layouts, values, drawables, etc.). And then clean/refresh/build the project

Answer 2

As Jose said, sometimes Android Studio just gets crazy. But a restart ain't always enough.

Invalidate your caches and restart.

File -> Invalidate Caches / Restart... -> Invalidate and Restart

Wait until AS has completely restarted and rebuilt. Hopefully it'll behave logically.