Enable Preview backgrounds in Chapter 1 and 2

Author: shahzadansari

Tutorial1-1Basics/src/main/java/com/smarttoolfactory/tutorial1_1basics/chapter1_basics/Tutorial1_2ClickSurfacesAndClicks.kt

@@ -26,7 +26,7 @@ import androidx.compose.ui.unit.sp
 import com.smarttoolfactory.tutorial1_1basics.ui.components.StyleableTutorialText
 import com.smarttoolfactory.tutorial1_1basics.ui.components.TutorialHeader
 
-@Preview
+@Preview(showBackground = true)
 @Composable
 fun Tutorial1_2Screen() {
  TutorialContent()
@@ -358,9 +358,9 @@ fun SurfaceClickPropagationExample() {
  }
 }
 
-@Preview
+@Preview(showBackground = true)
 @Preview("dark", uiMode = Configuration.UI_MODE_NIGHT_YES)
-@Preview(device = Devices.PIXEL_C)
+@Preview(device = Devices.PIXEL_C, showBackground = true)
 @Composable
 private fun Tutorial1_2Preview() {
  TutorialContent()

Tutorial1-1Basics/src/main/java/com/smarttoolfactory/tutorial1_1basics/chapter2_material_widgets/MotionLayoutDSLSample.kt

@@ -14,7 +14,7 @@ import androidx.constraintlayout.compose.SwipeMode
 import androidx.constraintlayout.compose.SwipeSide
 import androidx.constraintlayout.compose.SwipeTouchUp
 
-@Preview
+@Preview(showBackground = true)
 @Composable
 private fun Test() {
  MotionLayout(

Tutorial1-1Basics/src/main/java/com/smarttoolfactory/tutorial1_1basics/chapter2_material_widgets/MotionLayoutJSonSample.kt

@@ -38,7 +38,7 @@ import androidx.constraintlayout.compose.MotionLayout
 import androidx.constraintlayout.compose.MotionScene
 import com.smarttoolfactory.tutorial1_1basics.R
 
-@Preview
+@Preview(showBackground = true)
 @Composable
 fun MotionLayoutSample1() {
 
@@ -123,7 +123,7 @@ fun MotionLayoutSample1() {
 // on below line we are creating
 // a motion layout button method.
 
-@Preview
+@Preview(showBackground = true)
 @Composable
 private fun MotionLayoutButtonTest() {
  // on below line we are creating a box
@@ -328,7 +328,7 @@ fun MotionLayoutButton() {
 }
 
 
-@Preview(group = "motion8")
+@Preview(group = "motion8", showBackground = true)
 @Composable
 fun AttributesRotationXY() {
 

Tutorial1-1Basics/src/main/java/com/smarttoolfactory/tutorial1_1basics/chapter2_material_widgets/Tutorial2_10_1BottomSheet.kt

@@ -255,9 +255,9 @@ private fun MainContentPreview() {
 
 @ExperimentalAnimationApi
 @ExperimentalMaterialApi
-@Preview
-@Preview("dark", uiMode = Configuration.UI_MODE_NIGHT_YES)
-@Preview(device = Devices.PIXEL_C)
+@Preview(showBackground = true)
+@Preview("dark", uiMode = Configuration.UI_MODE_NIGHT_YES, showBackground = true)
+@Preview(device = Devices.PIXEL_C, showBackground = true)
 @Composable
 private fun SheetContentPreview() {
  ComposeTutorialsTheme {