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This Horizontalscrollview Layout Or Its Linearlayout Parent Is Useless

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I am new in android programming I have problem with horizontalscrollview. I have error 'This HorizontalScrollView layout or its LinearLayout parent is useless' on

Solution 1:

First of all, this is not an error but a warning - the code will still work correctly.

Now, as you can see, you have:

<LinearLayout...><HorizontalScrollView...>

    </HorizontalScrollView ...>
</LinearLayout>

There is only one child in the LinearLayout - and it's another ViewGroup - therefore you can get rid of the outer LinearLayout and simply keep the HorizontalScrollView:

<?xml version="1.0" encoding="utf-8"?><HorizontalScrollViewxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/container"android:layout_width="match_parent"android:layout_height="match_parent"tools:context="lv.myproject.formula.MainFormula"tools:ignore="MergeRootFrame"android:layout_marginTop="50dp" >

    ...
</HorizontalScrollView>

However if you are adding any Views to the LinearLayout in your code (i.e. as siblings to your HorizontalScrollView) then the correct thing is to ignore this warning.

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