Fixed #2 : Handled multi-touch case for SmoothSeekBar

Author: svignesh93

build.gradle

@@ -16,13 +16,13 @@
 
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-    ext.kotlin_version = "1.4.10"
+    ext.kotlin_version = "1.4.21"
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:4.1.0"
+        classpath "com.android.tools.build:gradle:4.1.1"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip

widgetslib/build.gradle

@@ -17,7 +17,7 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-kapt'
-apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-parcelize'
 
 android {
     compileSdkVersion 30
@@ -34,6 +34,10 @@ android {
         main.java.srcDirs += "src/main/kotlin"
         androidTest.assets.srcDirs += files("$projectDir/schemas".toString())
     }
+    buildFeatures {
+        viewBinding = true
+        dataBinding = true
+    }
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_1_8
         targetCompatibility = JavaVersion.VERSION_1_8

widgetslib/src/main/kotlin/com/litekite/widget/SmoothSeekBar.kt

@@ -36,6 +36,7 @@ class SmoothSeekBar @JvmOverloads constructor(
 ) : AppCompatSeekBar(context, attrs, defStyleAttr) {
 
 	private var callback: OnSeekBarChangeListener? = null
+	private var lastPointerId: Int = 0
 	private var lastProgress = 0
 
 	@SuppressLint("ClickableViewAccessibility")
@@ -47,9 +48,18 @@ class SmoothSeekBar @JvmOverloads constructor(
 			MotionEvent.ACTION_DOWN -> {
 				lastProgress = calculateProgress(event)
 				callback?.onStartTrackingTouch(this)
+				lastPointerId = event.getPointerId(event.actionIndex)
 			}
 			MotionEvent.ACTION_MOVE -> {
 				isPressed = true
+				// Updates last known progress based on the active pointer id
+				// in-case of any multi-touch event.
+				val currentPointerId = event.getPointerId(event.actionIndex)
+				if (lastPointerId != currentPointerId) {
+					lastProgress = calculateProgress(event)
+					lastPointerId = currentPointerId
+					return true
+				}
 				val newProgress = calculateProgress(event)
 				makeProgress(newProgress)
 				callback?.onProgressChanged(this, progress, true)