AnswerCards are now checked instead of being highlighted

app/src/main/java/com/example/quickmax/MyMaterialCard.kt

@@ -3,6 +3,7 @@ package com.example.quickmax
 import android.content.Context
 import android.graphics.Color
 import android.util.AttributeSet
+import androidx.core.content.ContextCompat
 import com.google.android.material.card.MaterialCardView
 
 class MyMaterialCard : MaterialCardView {
@@ -23,13 +24,12 @@ class MyMaterialCard : MaterialCardView {
         getTextView(this).setTextColor(color(context, R.color.transparent_black))
     }
 
-    fun markCorrect() {
-            setCardBackgroundColor(color(context, R.color.colorAccent))
+    fun markCorrect(context: Context) {
+        foregroundTintList = ContextCompat.getColorStateList(context, R.color.colorAccent)
     }
 
     fun markWrong(context: Context) {
-        setCardBackgroundColor(color(context, R.color.colorPrimary))
-        getTextView(this).setTextColor(Color.WHITE)
+        foregroundTintList = ContextCompat.getColorStateList(context, R.color.red)
     }
 
     fun disable() {

app/src/main/java/com/example/quickmax/TaskActivity.kt

@@ -70,14 +70,14 @@ class TaskActivity : AppCompatActivity() {
         btn_next.visibility = View.VISIBLE
 
         if (answer.correct) {
-            answer.card.markCorrect()
+            answer.card.markCorrect(this@TaskActivity)
             tv_response.text = resources.getString(R.string.response_correct)
             btn_next.backgroundTintList = ContextCompat.getColorStateList(this, R.color.colorAccent)
             btn_next.setTextColor(color(this, R.color.transparent_dark_black))
         } else {
             answer.card.markWrong(this@TaskActivity)
             tv_response.text = resources.getString(R.string.response_wrong)
-            btn_next.backgroundTintList = ContextCompat.getColorStateList(this, (R.color.colorPrimary))
+            btn_next.backgroundTintList = ContextCompat.getColorStateList(this, R.color.colorPrimary)
             btn_next.setTextColor(Color.WHITE)
         }
     }

app/src/main/res/drawable/gradient.xml

@@ -3,6 +3,6 @@
     <gradient
         android:angle="90"
         android:endColor="@color/colorPrimary"
-        android:startColor="@color/colorAccent"
+        android:startColor="@color/transparentAccent"
         android:type="linear" />
 </shape>
\ No newline at end of file

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

@@ -93,6 +93,7 @@
         <com.example.quickmax.MyMaterialCard
             android:id="@+id/card_left_top"
             style="@style/MyCard"
+            app:cardBackgroundColor="#F44336"
             app:cardCornerRadius="10dp"
             app:layout_constraintBottom_toTopOf="@+id/card_left_bottom"
             app:layout_constraintEnd_toStartOf="@+id/card_right_top"

app/src/main/res/values/colors.xml

@@ -4,5 +4,7 @@
     <color name="colorAccent">#4dd0e1</color>
     <color name="transparent_black">#83000000</color>
     <color name="transparent_dark_black">#BB000000</color>
-    <color name="transparent_red">#97FF0000</color>
+    <color name="transparent_red">#97F44336</color>
+    <color name="transparentAccent">#444DD0E1</color>
+    <color name="red">#FFF44336</color>
 </resources>