Code update

app/build.gradle

@@ -22,6 +22,8 @@ android {
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
     implementation 'com.android.support:appcompat-v7:28.0.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

app/src/main/java/com/goldenpie/devs/tvnoiseview/MainActivity.kt

@@ -7,6 +7,6 @@ import devs.goldenpie.com.tvnoiseview.TvNoiseView
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(TvNoiseView(this))
+        setContentView(R.layout.main_activity)
     }
 }

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

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <devs.goldenpie.com.tvnoiseview.TvNoiseView
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginLeft="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="32dp"
+        android:layout_marginRight="32dp"
+        android:layout_marginBottom="32dp"
+        app:layout_constraintBottom_toBottomOf="@+id/tv"
+        app:layout_constraintEnd_toEndOf="@+id/tv"
+        app:layout_constraintStart_toStartOf="@id/tv"
+        app:layout_constraintTop_toTopOf="@+id/tv" />
+
+    <android.support.v7.widget.AppCompatImageView
+        android:id="@+id/tv"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:src="@drawable/tv"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</android.support.constraint.ConstraintLayout>

tvnoiseview/src/main/java/devs/goldenpie/com/tvnoiseview/TvNoiseView.kt

@@ -17,52 +17,53 @@ class TvNoiseView : View {
 
     private var time = 0
 
-    private var height8: Int = 0
-    private var width8: Int = 0
     private var height2: Int = 0
-    private var width2: Int = 0
+    private var width8: Int = 0
+
+    lateinit var pixels: IntArray
 
     init {
-        Timer("", false).schedule(50, 20) {
+        Timer("", false).schedule(0, 50) {
             invalidate()
         }
     }
 
     override fun onDraw(canvas: Canvas?) {
-        val compare = Bitmap.createBitmap(width8, height8, Bitmap.Config.RGB_565)
+        val bitmap = Bitmap.createBitmap(width8, height2, Bitmap.Config.RGB_565)
 
-        for (y in 0 until height8) {
-            for (x in 0 until width8) {
-                val pix = ((40.0 * Math.random() * (7 + Math.sin(((x / 50000 + time / 7).toDouble())))).toInt())
-                compare.setPixel(x, y, Color.argb(255, pix, pix, pix))
-            }
+        for (i in 0 until (height2 * width8)) {
+            val pix = ((40.0 * Math.random() * (7 + Math.sin(((x / 50000 + time / 7).toDouble())))).toInt())
+            pixels[i] = Color.argb(255, pix, pix, pix)
         }
 
-        val scaledBitmap = Bitmap.createScaledBitmap(compare, width2, height2, false)
+        bitmap.setPixels(pixels, 0, width8, 0, 0, width8, height2)
 
-        canvas?.let {
-            it.drawBitmap(scaledBitmap, 0f, 0f, null)
-            it.drawBitmap(scaledBitmap, width2.toFloat(), 0f, null)
-            it.drawBitmap(scaledBitmap, 0f, height2.toFloat(), null)
-            it.drawBitmap(scaledBitmap, width2.toFloat(), height2.toFloat(), null)
-        }
+        val scaledBitmap = Bitmap.createScaledBitmap(bitmap, width / DIVIDER, height, false)
+
+        val width4 = width / DIVIDER
 
-        time = (time + 1) % compare.height
+        for (multiplier in 0 until DIVIDER)
+            canvas?.drawBitmap(scaledBitmap, (width4 * multiplier).toFloat(), 0f, null)
 
-        scaledBitmap.recycle()
-        compare.recycle()
+
+        time = (time + 1) % scaledBitmap.height
+
+//        scaledBitmap.recycled()
+        bitmap.recycle()
 
         super.onDraw(canvas)
     }
 
     override fun onLayout(changed: Boolean, left: Int, top: Int, right: Int, bottom: Int) {
         super.onLayout(changed, left, top, right, bottom)
+        height2 = height / 2
+        width8 = width / (DIVIDER * 2)
 
-        height8 = height / 8
-        width8 = width / 8
+        pixels = IntArray(width8 * (height2))
+    }
 
-        height2 = height / 2
-        width2 = width / 2
+    companion object {
+        const val DIVIDER = 4
     }