Error: String types not allowed (at 'layout_height' with value 'wrap content'). activity_main.xml

Question

I am new to the forum and just started learning about Android app development. I was going through the tutorials at developer.android.com and already ran into an compiling error. I see these three errors on my activity_main.xml:

error: Error: String types not allowed (at 'layout_height' with value 'wrap content').  activity_main.xml   
error: Error: String types not allowed (at 'layout_width' with value 'wrap content').   activity_main.xml   
error: Error: String types not allowed (at 'layout_height' with value 'wrap content').  activity_main.xml

and here is my activity_main.xml code as of now:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    tools:context=".MainActivity" >

    <EditText android:id="@+id/edit_message"
        android:layout_width="0dp"
        android:layout_height="wrap content"
        android:layout_weight="1"
        android:hint="@string/edit_message" />

    <Button
        android:layout_width="wrap content"
        android:layout_height="wrap content"
        android:text="@string/button_send" />

</LinearLayout>

Is it throwing an error because wrap_content is an incorrect syntax or does it need to be declared elsewhere? Any help will be appreciated on how to troubleshoot or fix this.

Thanks!

Answer 1

I've just started learning myself. I believe the problem is missing underscores. It should read "wrap_content" not "wrap content".