Background animation instead of progressBar

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

@@ -55,12 +55,12 @@ class TaskActivity : AppCompatActivity() {
     }
 
     private fun startProgressBarAnimation() {
-        val colorFrom = ContextCompat.getColor(this, R.color.colorPrimary)
-        val colorTo = Color.RED
+        val colorFrom = Color.TRANSPARENT
+        val colorTo = ContextCompat.getColor(this, R.color.transparent_red)
         val colorAnimation = ValueAnimator.ofObject(ArgbEvaluator(), colorFrom, colorTo)
         colorAnimation.duration = timeToSolve
         colorAnimation.addUpdateListener { animator ->
-            progress_bar.progressDrawable.setColorFilter(animator.animatedValue as Int,
+            layout_gradient.background.setColorFilter(animator.animatedValue as Int,
                 android.graphics.PorterDuff.Mode.SRC_ATOP)
         }
         colorAnimation.start()
@@ -72,13 +72,9 @@ class TaskActivity : AppCompatActivity() {
         startActivity(intent)
     }
 
-    private val timer = object : CountDownTimer(timeToSolve, 100) {
+    private val timer = object : CountDownTimer(timeToSolve, 1000) {
         override fun onTick(millisUntilFinished: Long) {
-            val progress = ((timeToSolve - millisUntilFinished).toFloat() / timeToSolve) * 100
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
-                progress_bar.setProgress(progress.toInt(), true)
-            else
-                progress_bar.progress = progress.toInt()
+            tv_timer.text = (millisUntilFinished/1000).toString()
         }
 
         override fun onFinish() {

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

@@ -9,33 +9,16 @@
     tools:context=".TaskActivity">
 
     <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/layout_gradient"
         android:layout_width="0dp"
-        android:layout_height="200dp"
+        android:layout_height="0dp"
+        android:layout_marginBottom="32dp"
         android:background="@drawable/gradient"
+        app:layout_constraintBottom_toBottomOf="@+id/cv_task"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent">
 
-        <FrameLayout
-            android:id="@+id/layout_progress_bar"
-            android:layout_width="match_parent"
-            android:layout_height="4dp"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent">
-
-            <ProgressBar
-                android:id="@+id/progress_bar"
-                style="?android:attr/progressBarStyleHorizontal"
-                android:layout_width="match_parent"
-                android:layout_height="32dp"
-                android:layout_gravity="center"
-                android:foregroundTint="#320A64"
-                android:indeterminate="false"
-                android:max="100" />
-
-        </FrameLayout>
-
         <ImageButton
             android:id="@+id/imageButton"
             android:layout_width="wrap_content"
@@ -45,25 +28,24 @@
             android:background="@android:color/transparent"
             android:tint="@android:color/white"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/layout_progress_bar"
+            app:layout_constraintTop_toTopOf="parent"
             app:srcCompat="@drawable/ic_back" />
 
-        <TextView
-            android:id="@+id/tv_score"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_marginTop="8dp"
-            android:gravity="center"
-            android:text="Score: 5"
-            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
-            android:textColor="@android:color/white"
-            app:layout_constraintBottom_toBottomOf="@+id/imageButton"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/layout_progress_bar" />
-
     </androidx.constraintlayout.widget.ConstraintLayout>
 
+    <TextView
+        android:id="@+id/tv_timer"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:gravity="center"
+        android:text="@string/number_digits_3"
+        android:textColor="@android:color/white"
+        app:autoSizeTextType="uniform"
+        app:layout_constraintBottom_toTopOf="@+id/cv_task"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
     <androidx.cardview.widget.CardView
         android:id="@+id/cv_task"
         style="@style/CardView.Light"
@@ -77,7 +59,6 @@
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.5"
         app:layout_constraintVertical_chainStyle="packed">
 
         <TextView

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

@@ -4,4 +4,5 @@
     <color name="colorPrimaryDark">#12005e</color>
     <color name="colorAccent">#4dd0e1</color>
     <color name="transparent_black">#97000000</color>
+    <color name="transparent_red">#97FF0000</color>
 </resources>