[REFACTOR] [#2] Layout names with convention to find them in a group.

Author: hossain-khan

app/src/main/java/com/hossainkhan/android/demo/data/LayoutDataStore.kt

@@ -28,11 +28,11 @@ class LayoutDataStore @Inject constructor(
         private val resources: Resources) {
     val supportedLayoutInfos = listOf(
             LayoutInformation(
-                    layoutResourceId = R.layout.activity_positioning_top_left,
+                    layoutResourceId = R.layout.preview_positioning_top_left,
                     title = "Positioning: Top Left",
                     description = "Top left using constraints."),
             LayoutInformation(
-                    layoutResourceId = R.layout.activity_positioning_centered,
+                    layoutResourceId = R.layout.preview_positioning_centered,
                     title = "Positioning: Centered",
                     description = "Centered view using constraints on top-bottom and left-right.")
     )
@@ -52,7 +52,7 @@ class LayoutDataStore @Inject constructor(
      */
     fun getLayoutUrl(@LayoutRes layoutResourceId: Int): String {
         // Containes package name and layout name
-        // com.hossainkhan.android.demo:layout/activity_positioning_top_left
+        // com.hossainkhan.android.demo:layout/preview_positioning_top_left
         val resourceName = resources.getResourceName(layoutResourceId)
 
         if(!resourceName.contains("layout")) {

app/src/main/res/layout/.README.md

@@ -0,0 +1,7 @@
+Constraint Layouts
+==================
+All the constraint layout for preview are defined here along with activity layouts.
+
+For quick navigation, all the preview/demo layout should be prefixed with `preview_`
+
+All layout should be documented well and minimal style should be added to element.

…layout/activity_positioning_centered.xml …/layout/preview_positioning_centered.xmlapp/src/main/res/layout/activity_positioning_centered.xml renamed to app/src/main/res/layout/preview_positioning_centered.xml app/src/main/res/layout/activity_positioning_centered.xml renamed to app/src/main/res/layout/preview_positioning_centered.xml

@@ -19,7 +19,6 @@ package com.hossainkhan.android.demo.data
 import android.content.res.Resources
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
-import org.junit.Assert.assertNull
 import org.junit.Before
 import org.junit.Test
 import org.mockito.Mockito
@@ -46,18 +45,18 @@ class LayoutDataStoreTest {
      * Tests conversion from layout file to URL to preview on the web.
      *
      * Input:
-     * com.hossainkhan.android.demo:layout/activity_positioning_top_left
+     * com.hossainkhan.android.demo:layout/preview_positioning_top_left
      *
      * Output:
-     * https://github.com/amardeshbd/android-constraint-layout-cheatsheet/blob/master/app/src/main/res/layout/activity_positioning_top_left.xml
+     * https://github.com/amardeshbd/android-constraint-layout-cheatsheet/blob/master/app/src/main/res/layout/preview_positioning_top_leftxml
      */
     @Test
     fun getLayoutUrl_givenValidLayout_providesUrlToLayoutResource() {
         `when`(resources.getResourceName(anyInt()))
-                .thenReturn("com.hossainkhan.android.demo:layout/activity_positioning_top_left")
+                .thenReturn("com.hossainkhan.android.demo:layout/preview_positioning_top_left")
 
 
-        assertEquals("https://github.com/amardeshbd/android-constraint-layout-cheatsheet/blob/master/app/src/main/res/layout/activity_positioning_top_left.xml",
+        assertEquals("https://github.com/amardeshbd/android-constraint-layout-cheatsheet/blob/master/app/src/main/res/layout/preview_positioning_top_left.xml",
                 sut.getLayoutUrl(1))
     }