LinearLayout flagged if used in CardView

Question

I have used a LinearLayout in a CardView to get a kind of social media login button look and it all runs fine, but Android Studio flags Element LinearLayout is not allowed here. I was wondering why this may be the case? My xml is this :

<android.support.v7.widget.CardView
            xmlns:card_view="http://schemas.android.com/apk/res-auto"
            android:layout_below="@id/cv_fb"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            card_view:cardElevation="3dp"
            >

            <LinearLayout

                android:id="@+id/ll_entitlement_extend_google"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:background="@color/white"
                android:clickable="true"
                android:gravity="center"
                android:paddingTop="10dp"
                android:paddingBottom="10dp"
                >

                <ImageView
                    android:layout_weight="1"
                    android:layout_width="75dp"
                    android:layout_height="75dp"
                    android:src="@drawable/google_icon"/>

                <TextView
                    android:layout_weight="1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="Connect with Google +"/>

                <ImageView
                    android:layout_weight="1"
                    android:layout_width="25dp"
                    android:layout_height="25dp"
                    android:src="@drawable/ic_chevron_right_black"/>


            </LinearLayout>
        </android.support.v7.widget.CardView>

Turbine

probably some sdk hitches. clean your project and try again – Schonfeld

It's more of an IDE hitch. Cleaning didn't work for me, but simply restarting Android Studio fixed this. – Margaretemargaretha

Same happened to me, and as said by @Margaretemargaretha it seems to be an IDE problem, simply restarting the IDE fixed it – Inflatable

Now even restarting is not working what to do??? I have restarted the entire system, cleaned the project and I have tried "Invalidata Caches/Restart" too, it's really frustrating now..... – Pinniped

Answer 1

Just to have a proper answer, as @Blacklight said in comments, it is an IDE issue so restarting it should fix the problem.

Welldefined

this is the associated issue : code.google.com/p/android/issues/detail?id=81362 – Sulfaguanidine

Answer 2

Apart from other suggestions and the above answer, this issue happenes on me if I didn't upgrade my support library to AndroidX, in this case is CardView. So from

android.support.v7.widget.CardView

will need to be change to

androidx.cardview.widget.CardView

and the warning shall now disappears.

Jacobsen

Perfect, that was the issue. Thanks! – Swanherd