Fix issue with default text color and default background color (#251)

core-ui/src/test/java/com/agileburo/anytype/core_ui/BlockAdapterTest.kt

@@ -32,6 +32,19 @@ class BlockAdapterTest {
 
     private val context: Context = ApplicationProvider.getApplicationContext()
 
+    @Test
+    fun `should return transparent hex code when int color value is zero`() {
+
+        val transparentColor = 0
+
+        val actual = transparentColor.hexColorCode()
+
+        assertEquals(
+            expected = "#00000000",
+            actual = actual
+        )
+    }
+
     @Test
     fun `should create paragraph view holder`() {
 

core-utils/src/main/java/com/agileburo/anytype/core_utils/ext/ColorExt.kt

@@ -1,3 +1,15 @@
 package com.agileburo.anytype.core_utils.ext
 
-fun Int.hexColorCode(): String = String.format("#%06X", 0xFFFFFF and this)
+/**
+ * This method removes alpha from color.
+ * @return Transparent color, when input is 0
+ */
+
+const val TRANSPARENT_COLOR = "#00000000"
+
+fun Int.hexColorCode(): String =
+    if (this == 0) {
+        TRANSPARENT_COLOR
+    } else {
+        String.format("#%06X", 0xFFFFFF and this)
+    }

sample/build.gradle

@@ -23,6 +23,9 @@ android {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
+        debug {
+            debuggable true
+        }
     }
 
 }