I have a linear layout that I normally add ImageViews
to programmatically, but I'd like to render better previews inside Android Studio when looking at layouts.
I can't use tools:src
as mentioned here because I don't have any ImageView at all in the XML until runtime.
As a really naive approach, this works visually in Android Studio:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<include tools:layout="@layout/some_sample_layout"/>
</LinearLayout>
If @layout/some_sample_layout
is then another LinearLayout
:
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="centerCrop"
tools:src="@tools:sample/backgrounds/scenic" />
</LinearLayout>
But while it displays OK in Android Studio, it fails to compile:
Execution failed for task ':app:mergeDebugResources'.
> main_layout.xml: Error: ERROR: [44 68 44 68 25] must include a layout file:///main_layout.xml
Ideally I think that I'm looking for:
- some way to add an ImageView directly to the main
LinearLayout
but mark the whole view as "ignore unless tools" or - to be able to "swap" in the body of the LinearLayout somehow.
Is this possible with tools at the moment?
from Can I show a sample view when the layout is normally empty & only populated programmatically?
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