android layout: This tag and its children can be replaced by one <TextView/> and a compound drawable

Question

To expand on Romain Guy's answer, here is an example.

Before:

<LinearLayout 
android:layout_width="fill_parent"
android:layout_height="wrap_content" 
android:layout_marginTop="10dp"  
android:padding="5dp" >

<TextView 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:text="My Compound Button" />

<ImageView 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/my_drawable" />
</LinearLayout>

After:

<TextView  
    android:layout_marginTop="10dp"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" 
    android:text="My Compound Button" 
    android:drawableRight="@drawable/my_drawable" android:padding="5dp" />

Merge the TextView and the ImageView into one, by using TextView's setCompoundDrawable*() methods, or using android:drawableLeft.

Thought I would try to get some extra puntos for this as well: you can add padding between the image and the text using android:drawablePadding. https://stackoverflow.com/a/6671544/1224741

Sometimes it is possible to replace ImageView (or multiple) and TextView with one TextView with compound drawable(s). There are NOT many parameters which can be applied to compound drawable using native API and this TextViewRichDrawable library, but if you can manage one TextView instead of using LinearLayout you should definitely use it.

The list of attributes and parameters which can be applied to compound drawables:

Size: (YES, really):

<com.tolstykh.textviewrichdrawable.TextViewRichDrawable
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Some text"
    app:compoundDrawableHeight="24dp"
    app:compoundDrawableWidth="24dp"/>

Even set vector resource as drawable:

<com.tolstykh.textviewrichdrawable.TextViewRichDrawable
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Some text"
    app:drawableTopVector="@drawable/some_vector_drawble"
    app:drawableEndVector="@drawable/another_vector_drawable" />

Drawable's Padding using native API android:drawablePadding -> link

Here is an example:

Add tools:ignore="UseCompoundDrawables" to <LinearLayout>.

A LinearLayout which contains an ImageView and a TextView can be more efficiently handled as a compound drawable (a single TextView, using the drawableTop, drawableLeft, drawableRight and/or drawableBottom attributes to draw one or more images adjacent to the text).

If the two widgets are offset from each other with margins, this can be replaced with a drawablePadding attribute.

There's a lint quickfix to perform this conversion in the Eclipse plugin.

From: Android Official API docs!