Improved image upload dialog

app/src/main/res/layout/simple_grid_item.xml

@@ -1,21 +1,40 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.constraint.ConstraintLayout
+    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:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:layout_gravity="center"
-    android:gravity="center"
-    android:orientation="vertical">
+    android:layout_height="wrap_content">
 
     <ImageView
         android:id="@+id/image_view"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content" />
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        android:scaleType="fitXY"
+        app:layout_constraintVertical_chainStyle="packed"
+        app:layout_constraintVertical_bias="0"
+        app:layout_constraintBottom_toBottomOf="@id/text_view"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
     <TextView
         android:id="@+id/text_view"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginBottom="16dp"
         android:gravity="center_horizontal"
-        android:textColor="@android:color/black" />
+        android:textColor="@android:color/black"
+        tools:text="Choose from gallery"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/image_view"
+        app:layout_constraintBottom_toBottomOf="parent"/>
 
-</LinearLayout>
+</android.support.constraint.ConstraintLayout>