android-tools-namespace

Creating an activity with navigation drawer in Android Studio causes this to be shown in the XML code: <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true" tools:openDrawer="start"> If I remove the tools:openDrawer="start" , on the layout preview, the navigation drawer will be closed instead of open. I thought this

How to use androidx.recyclerview.widget.RecyclerView with tools:listitem ? I have this layout: <?xml version="1.0" encoding="utf-8"?> <androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/recyclerViewActors" android:layout_width="match_parent" android:layout_height="match_parent" app:layoutManager="androidx.recyclerview.widget.GridLayoutManager" tools:layoutManager="androidx.recyclerview.widget.GridLayoutManager" tools:listitem="

Let's imagine we are developing compound component based on LinearLayout. So, we create class like this: public class SomeView extends LinearLayout { public SomeView(Context context, AttributeSet attrs) { super(context, attrs); setOrientation(LinearLayout.VERTICAL); View.inflate(context, R.layout.somelayout, this); } } If we'll use LinearLayout as a root of somelayout.xml , we'll have extra view level, so we use merge tag: <?xml version="1.0" encoding="utf-8"?> <merge xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match

When I add the RecyclerView to the layout, it shows up as a blank screen. Is there a way, such as through the tools namespace, to show a preview of the content of the RecyclerView? @oRRs is right ! I'm using Android Studio 1.4 RC2 and you can now specify any custom layout. I tried a custom CardView and it works. tools:listitem="@android:layout/simple_list_item_checked" tools namespace enables design-time features (such as which layout to show in a fragment) or compile-time behaviors (such as which shrinking mode to apply to your XML resources) It is really powerful feature that is developing