Problems when defining the layout

Question

I am unable to make you accept this layout definition regarding the size of the Web View:

<RelativeLayout 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="vertical" 
     android:paddingLeft="5dp" 
     android:paddingRight="5dp">
  <TextView 
      android:id="@+id/title" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_centerHorizontal="true" 
      android:text="@string/title" 
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:textStyle="bold" /> 
 <ScrollView android:id="@+id/sv" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:layout_below="@+id/title" 
     android:layout_marginTop="10dp">
 <RelativeLayout 
     android:layout_width="fill_parent"
     android:layout_height="wrap_content">
  <WebView android:id="@+id/desc" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginTop="5dp" 
      android:scrollbarStyle="insideOverlay" 
      android:text="@string/desc" /> 
  </RelativeLayout>
  </ScrollView>
  </RelativeLayout>

Throughout the Webview tag comes out this error:Placing a in a Parent element that uses a wrap_content size can lead to subtle bugs; use match_parent.

Answer 1

I’m not quite sure the purpose, but it’s not recommended to leave your WebView with limited size, the idea is that it always occupy as much screen as possible, using layout_height="match_parent".

Like the very WebView already have scroll, do not need to use a ScrollView in it. I also gave a simplified layout, getting:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingLeft="5dp"
    android:paddingRight="5dp">

    <TextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="@string/title"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:textStyle="bold" />

    <WebView
        android:id="@+id/desc"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:layout_marginTop="5dp"
        android:scrollbarStyle="insideOverlay"
        android:text="@string/desc" />

</LinearLayout>