Android - SHA1 key for Firebase

Introduction:- For access service of  Firebase. We always need SHA1 key to add a project on Firebase console. So,  i'm going to explain how can you easily get it from Android Studio.

1. Click on Gradle tab.

 2.  Double click on signingReport file.

3. Now you will see SHA1 key.  

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Android - Hash Key of Application

Introduction: Register an Android application for a 3rd party like Facebook. We always need Hash key of APK. Here, i'm going to explain a simple code snippet that gets hash key of your debug and release Apk.

So, First of all, if you want Hash key of debugging apk just paste the following code snippet anywhere in your Java/Kotlin class.

public void generateKeyHash() {

     try {

            PackageInfo info = getPackageManager().getPackageInfo( getPackageName(),PackageManager.GET_SIGNATURES);

            for (Signature signature : info.signatures) {

                MessageDigest md = MessageDigest.getInstance("SHA");

                md.update(signature.toByteArray());

                Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));

            }




         } catch (PackageManager.NameNotFoundException e) {

           Log.i("","");




         } catch (NoSuchAlgorithmException e) {

            Log.i("","");




         }

}

Now press ALT+6, You will see hash key in the log.

Now, If you want hash key of release Apk. You can do it with simple two steps.

1. The first step is the same as above.

2. Now generate release Apk. Install it in the device and connect it with android studio and press ALT+6. You will see Hash key as above. After that, you can delete code snippet and generate another singed build.

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Android - Circular image view with loader

Introduction:- Reusable component always increase the speed of development. So,  i'm going to explain a component that displays image in the circular shape that's written in Kotlin.

For display user profile pic we always need a circular image view.  Let's dive in the code snippet.

First of all, you need to add it in your layout file: activity_main

<LinearLayout

    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:clickable="true"

    android:focusable="true"

    android:orientation="vertical"

    >

        <com.demo.CircularImageView

            android:id="@+id/fragment_tv_user_pic"

            android:layout_width="60dp"

            android:layout_height="60dp"

            android:layout_gravity="center_horizontal"

            android:layout_marginTop="22dp"

            app:civ_border_color="@color/colorWhite"

            app:civ_border_width="2dp"

            app:matProg_barColor="@color/colorAccent"

            app:matProg_barWidth="2dp"

            app:matProg_circleRadius="60dp"

            app:matProg_progressIndeterminate="true"

            />




   </LinearLayout>

Example-1:

If you want display short form of the name in this component. Use the following code snippet.

 val civUserPic = findViewById<CircularImageView>(R.id.fragment_tv_user_pic)

 civUserPic.createTextPaint("#2CB044", 60, true)

 civUserPic.setText("S.K")

Output:

Example-2:

If you want to display image from res folder in this component. Use the following code snippet.

  civUserPic.setImageDrawable(ContextCompat.getDrawable(this,R.drawable.images))

  civUserPic.setBorderColor(R.color.colorPrimary)

Output:

Example-3:

If you want to display image from the server and you have full path of image use following steps. You can use any  image loader lib like here i'm using Picasso

       civUserPic.loaderState(true)

       civUserPic.invalidate()

       Picasso.with(this).load("image_url").into(civUserPic)

Output:

So, time to view component.

values/attrs:-

<?xml version="1.0" encoding="utf-8"?>

<resources>

     <declare-styleable name="ProgressWheel">

        <attr name="matProg_progressIndeterminate" format="boolean"/>

        <attr name="matProg_barColor" format="color"/>

        <attr name="matProg_rimColor" format="color"/>

        <attr name="matProg_rimWidth" format="dimension"/>

        <attr name="matProg_spinSpeed" format="float"/>

        <attr name="matProg_barSpinCycleTime" format="integer"/>

        <attr name="matProg_circleRadius" format="dimension"/>

        <attr name="matProg_fillRadius" format="boolean"/>

        <attr name="matProg_barWidth" format="dimension"/>

        <attr name="matProg_linearProgress" format="boolean"/>

        <attr name="matProg_visible" format="boolean"/>

     </declare-styleable>

    <declare-styleable name="CircularImageView">

        <attr name="civ_border_width" format="dimension" />

        <attr name="civ_border_color" format="color" />

        <attr name="civ_border_overlay" format="boolean" />

        <attr name="civ_fad_overlay" format="boolean" />

        <attr name="civ_fill_color" format="color" />

    </declare-styleable>

</resources>

CircularImageView.Kt:-

class CircularImageView : AppCompatImageView {




    private val mDrawableRect = RectF()

    private val mBorderRect = RectF()

    private val mShaderMatrix = Matrix()

    private val mBitmapPaint = Paint()

    private val mBorderPaint = Paint()

    private val mFillPaint = Paint()

    private var mBorderColor = DEFAULT_BORDER_COLOR

    private var mBorderWidth = DEFAULT_BORDER_WIDTH

    private var mFillColor = DEFAULT_FILL_COLOR

    private var mBitmap: Bitmap? = null

    private var mBitmapShader: BitmapShader? = null

    private var mBitmapWidth: Int = 0

    private var mBitmapHeight: Int = 0

    private var mDrawableRadius: Float = 0.toFloat()

    private var mBorderRadius: Float = 0.toFloat()

    private var mColorFilter: ColorFilter? = null

    private var mReady: Boolean = false

    private var mSetupPending: Boolean = false

    private var mBorderOverlay: Boolean = false

    private val barLength = 16

    //Sizes (with defaults in DP)

    private var circleRadius = 28

    private var barWidth = 4

    private var rimWidth = 4

    private var fillRadius = false

    private var timeStartGrowing = 0.0

    private var barSpinCycleTime = 460.0

    private var barExtraLength = 0f

    private var barGrowingFromFront = true

    private var pausedTimeWithoutGrowing: Long = 0

    //Colors (with defaults)

    private var barColor = -0x56000000

    private var rimColor = 0x00FFFFFF

    //Paints

    private val barPaint = Paint()

    private val rimPaint = Paint()

    //Rectangles

    private var circleBounds = RectF()

    //Animation

    //The amount of degrees per second

    private var spinSpeed = 230.0f

    // The last time the spinner was animated

    private var lastTimeAnimated: Long = 0

    private var linearProgress: Boolean = false

    var isProgressVisible: Boolean = false

    private var mProgress = 0.0f

    private var mTargetProgress = 0.0f

    private var isSpinning = false

    private var callback: ProgressCallback? = null

    private var mFadEnable: Boolean=false

    private var fadPaint: Paint? = null

    private var fad: Int = 0

    private var textPaint: Paint? = null

    private var text: String? = null

    private var isBorderRequired: Boolean = false




  

    constructor(context: Context) : super(context) {

        init()

    }




  

    constructor(context: Context, attrs: AttributeSet) : this(context, attrs, 0) {

        parseAttributes(context.obtainStyledAttributes(attrs,

                R.styleable.ProgressWheel))

    }






constructor(context: Context, attrs: AttributeSet, defStyle: Int) : super(context, attrs, defStyle) {




        val a = context.obtainStyledAttributes(attrs, R.styleable.CircularImageView, defStyle, 0)

        mBorderWidth = a.getDimensionPixelSize(R.styleable.CircularImageView_civ_border_width, DEFAULT_BORDER_WIDTH)

        mBorderColor = a.getColor(R.styleable.CircularImageView_civ_border_color, DEFAULT_BORDER_COLOR)

        mBorderOverlay = a.getBoolean(R.styleable.CircularImageView_civ_border_overlay, DEFAULT_BORDER_OVERLAY)

        mFadEnable = a.getBoolean(R.styleable.CircularImageView_civ_fad_overlay, DEFAULT_BORDER_OVERLAY)

        mFillColor = a.getColor(R.styleable.CircularImageView_civ_fill_color, DEFAULT_FILL_COLOR)

        a.recycle()

        init()




    }




  

    private fun init() {

        super.setScaleType(SCALE_TYPE)

        mReady = true

        if (mSetupPending) {

            setup()

            mSetupPending = false

        }

    }




    override fun getScaleType(): ImageView.ScaleType {

        return SCALE_TYPE

    }




    override fun setScaleType(scaleType: ImageView.ScaleType) {

        if (scaleType != SCALE_TYPE) {

            throw IllegalArgumentException(String.format("ScaleType %s not supported.", scaleType))

        }




    }




    override fun setAdjustViewBounds(adjustViewBounds: Boolean) {

        if (adjustViewBounds) {

            throw IllegalArgumentException("adjustViewBounds not supported.")

        }

    }




    override fun onDraw(canvas: Canvas) {

        if (mBitmap != null) {

            //draw image

            if (mFillColor != Color.TRANSPARENT) {

                canvas.drawCircle(width / 2.0f, height / 2.0f, mDrawableRadius, mFillPaint)

            }

            canvas.drawCircle(width / 2.0f, height / 2.0f, mDrawableRadius, mBitmapPaint)

            if (mBorderWidth != 0) {

                canvas.drawCircle(width / 2.0f, height / 2.0f, mBorderRadius, mBorderPaint)

            }

            isProgressVisible = false




        } else if (text != null && !text!!.isEmpty() && textPaint != null) {




            if (isBorderRequired && mBorderWidth != 0) {

                canvas.drawCircle(width / 2.0f, height / 2.0f, mBorderRadius, mBorderPaint)

            }




            canvas.drawText(text!!, width / 2.0f - textPaint!!.measureText(text) / 2, height / 2.0f - (textPaint!!.descent() + textPaint!!.ascent()) / 2, textPaint!!)

        }

        if (mFadEnable && fadPaint != null) {

            fadPaint!!.alpha = fad

            canvas.drawCircle(width / 2.0f, height / 2.0f, mDrawableRadius, fadPaint!!)




        }

        //draw progress bar

        if (isProgressVisible) {

            drawProgressBar(canvas)

        }

    }




    fun loaderState(state: Boolean) {

        isProgressVisible = state

    }




    private fun drawProgressBar(canvas: Canvas) {

        canvas.drawArc(circleBounds, 360f, 360f, false, rimPaint)

        var mustInvalidate = false

        if (isSpinning) {

            //Draw the spinning bar

            mustInvalidate = true

            val deltaTime = SystemClock.uptimeMillis() - lastTimeAnimated

            val deltaNormalized = deltaTime * spinSpeed / 1000.0f

            updateBarLength(deltaTime)

            mProgress += deltaNormalized

            if (mProgress > 360) {

                mProgress -= 360f

                // A full turn has been completed

                // we run the callback with -1 in case we want to

                // do something, like changing the color

                runCallback(-1.0f)

            }

            lastTimeAnimated = SystemClock.uptimeMillis()

            var from = mProgress - 90

            var length = barLength + barExtraLength

            if (isInEditMode) {

                from = 0f

                length = 135f

            }

            canvas.drawArc(circleBounds, from, length, false,

                    barPaint)

        } else {

            val oldProgress = mProgress

            if (mProgress != mTargetProgress) {

                //We smoothly increase the progress bar

                mustInvalidate = true

                val deltaTime = (SystemClock.uptimeMillis() - lastTimeAnimated).toFloat() / 1000

                val deltaNormalized = deltaTime * spinSpeed

                mProgress = Math.min(mProgress + deltaNormalized, mTargetProgress)

                lastTimeAnimated = SystemClock.uptimeMillis()

            }

            if (oldProgress != mProgress) {

                runCallback()

            }

            var offset = 0.0f

            var progress = mProgress

            if (!linearProgress) {

                val factor = 2.0f

                offset = (1.0f - Math.pow((1.0f - mProgress / 360.0f).toDouble(), (2.0f * factor).toDouble())).toFloat() * 360.0f

                progress = (1.0f - Math.pow((1.0f - mProgress / 360.0f).toDouble(), factor.toDouble())).toFloat() * 360.0f

            }

            if (isInEditMode) {

                progress = 360f

            }

            canvas.drawArc(circleBounds, offset - 90, progress, false, barPaint)

        }

        if (mustInvalidate) {

            invalidate()

        }

    }




    override fun onSizeChanged(w: Int, h: Int, oldW: Int, oldH: Int) {

        super.onSizeChanged(w, h, oldW, oldH)

        setUpBounds(w, h)

        setupPaints()

        setup()




    }




    override fun setImageBitmap(bm: Bitmap) {

        super.setImageBitmap(bm)

        mBitmap = bm

        setup()

    }




    override fun setImageDrawable(drawable: Drawable?) {

        super.setImageDrawable(drawable)

        mBitmap = getBitmapFromDrawable(drawable)

        setup()

    }




    override fun setImageResource(@DrawableRes resId: Int) {

        super.setImageResource(resId)

        mBitmap = getBitmapFromDrawable(drawable)

        setup()

    }




    override fun setImageURI(uri: Uri?) {

        super.setImageURI(uri)

        mBitmap = if (uri != null) getBitmapFromDrawable(drawable) else null

        setup()

    }




    override fun setColorFilter(cf: ColorFilter) {

        if (cf === mColorFilter) {

            return

        }

        mColorFilter = cf

        mBitmapPaint.colorFilter = mColorFilter

        invalidate()

    }




   

    private fun getBitmapFromDrawable(drawable: Drawable?): Bitmap? {

        if (drawable == null) {

            return null

        }

        if (drawable is BitmapDrawable) {

            return drawable.bitmap

        }

        try {

            val bitmap: Bitmap

            if (drawable is ColorDrawable) {

                bitmap = Bitmap.createBitmap(COLOR_DRAWABLE_DIMENSION, COLOR_DRAWABLE_DIMENSION, BITMAP_CONFIG)

            } else {

                bitmap = Bitmap.createBitmap(drawable.intrinsicWidth, drawable.intrinsicHeight, BITMAP_CONFIG)

            }

            val canvas = Canvas(bitmap)

            drawable.setBounds(0, 0, canvas.width, canvas.height)

            drawable.draw(canvas)

            return bitmap

        } catch (e: Exception) {

            Log.d("error", e.toString())

            return null

        }




    }



    private fun setup() {

        if (!mReady) {

            mSetupPending = true

            return

        }

        if (width == 0 && height == 0) {

            return

        }

        mBorderPaint.style = Paint.Style.STROKE

        mBorderPaint.isAntiAlias = true

        mBorderPaint.color = mBorderColor

        mBorderPaint.strokeWidth = mBorderWidth.toFloat()

        mFillPaint.style = Paint.Style.FILL

        mFillPaint.isAntiAlias = true

        mFillPaint.color = mFillColor

        mBorderRect.set(0f, 0f, width.toFloat(), height.toFloat())

        mBorderRadius = Math.min((mBorderRect.height() - mBorderWidth) / 2.0f, (mBorderRect.width() - mBorderWidth) / 2.0f)

        mDrawableRect.set(mBorderRect)

        if (!mBorderOverlay) {

            mDrawableRect.inset(mBorderWidth.toFloat(), mBorderWidth.toFloat())

        }

        mDrawableRadius = Math.min(mDrawableRect.height() / 2.0f, mDrawableRect.width() / 2.0f)

        if (mBitmap == null) {

            invalidate()

            return

        }

        mBitmapShader = BitmapShader(mBitmap!!, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP)

        mBitmapPaint.isAntiAlias = true

        mBitmapPaint.shader = mBitmapShader

        mBitmapHeight = mBitmap!!.height

        mBitmapWidth = mBitmap!!.width

        updateShaderMatrix()

        invalidate()

    }




    fun setBorderColor(color: Int) {

        mBorderColor = color

        mBorderPaint.color = mBorderColor

        invalidate()

    }



    private fun updateShaderMatrix() {

        val scale: Float

        var dx = 0f

        var dy = 0f

        mShaderMatrix.set(null)

        if (mBitmapWidth * mDrawableRect.height() > mDrawableRect.width() * mBitmapHeight) {

            scale = mDrawableRect.height() / mBitmapHeight.toFloat()

            dx = (mDrawableRect.width() - mBitmapWidth * scale) * 0.5f

        } else {

            scale = mDrawableRect.width() / mBitmapWidth.toFloat()

            dy = (mDrawableRect.height() - mBitmapHeight * scale) * 0.5f

        }

        mShaderMatrix.setScale(scale, scale)

        mShaderMatrix.postTranslate((dx + 0.5f).toInt() + mDrawableRect.left, (dy + 0.5f).toInt() + mDrawableRect.top)

        mBitmapShader!!.setLocalMatrix(mShaderMatrix)

    }




    fun createFadPaint(color: String) {

        fadPaint = Paint()

        fadPaint!!.style = Paint.Style.FILL

        fadPaint!!.isAntiAlias = true

        fadPaint!!.color = Color.parseColor(color)

    }




    fun createTextPaint(color: String, fontSize: Int, isBorderRequired: Boolean) {

        textPaint = Paint()

        textPaint!!.style = Paint.Style.FILL

        textPaint!!.isAntiAlias = true

        textPaint!!.color = Color.parseColor(color)

        textPaint!!.textSize = fontSize.toFloat()

        this.isBorderRequired = isBorderRequired

    }




    fun setText(text: String) {

        this.text = text

        mBitmap = null

        Log.i(">>>", "" + text)

        invalidate()

    }




    fun setFad(fad: Int) {

        this.fad = fad

        Log.i(">>>", "" + fad)

        invalidate()

    }




  

    interface ProgressCallback {

    

        fun onProgressUpdate(progress: Float)

    }




  

    private fun parseAttributes(a: TypedArray) {

        // We transform the default values from DIP to pixels

        val metrics = context.resources.displayMetrics

        barWidth = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, barWidth.toFloat(), metrics).toInt()

        rimWidth = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, rimWidth.toFloat(), metrics).toInt()

        circleRadius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, circleRadius.toFloat(), metrics).toInt()

        circleRadius = a.getDimension(R.styleable.ProgressWheel_matProg_circleRadius, circleRadius.toFloat()).toInt()

        fillRadius = a.getBoolean(R.styleable.ProgressWheel_matProg_fillRadius, false)

        barWidth = a.getDimension(R.styleable.ProgressWheel_matProg_barWidth, barWidth.toFloat()).toInt()

        rimWidth = a.getDimension(R.styleable.ProgressWheel_matProg_rimWidth, rimWidth.toFloat()).toInt()

        val baseSpinSpeed = a.getFloat(R.styleable.ProgressWheel_matProg_spinSpeed, spinSpeed / 360.0f)

        spinSpeed = baseSpinSpeed * 360

        barSpinCycleTime = a.getInt(R.styleable.ProgressWheel_matProg_barSpinCycleTime, barSpinCycleTime.toInt()).toDouble()

        barColor = a.getColor(R.styleable.ProgressWheel_matProg_barColor, barColor)

        rimColor = a.getColor(R.styleable.ProgressWheel_matProg_rimColor, rimColor)

        isProgressVisible = a.getBoolean(R.styleable.ProgressWheel_matProg_visible, false)

        linearProgress = a.getBoolean(R.styleable.ProgressWheel_matProg_linearProgress, false)

        if (a.getBoolean(R.styleable.ProgressWheel_matProg_progressIndeterminate, false)) {

            spin()

        }

        // Recycle

        a.recycle()

    }






    private fun spin() {

        lastTimeAnimated = SystemClock.uptimeMillis()

        isSpinning = true

        invalidate()

    }




    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {

        super.onMeasure(widthMeasureSpec, heightMeasureSpec)

        val viewWidth = circleRadius + this.paddingLeft + this.paddingRight

        val viewHeight = circleRadius + this.paddingTop + this.paddingBottom

        val widthMode = View.MeasureSpec.getMode(widthMeasureSpec)

        val widthSize = View.MeasureSpec.getSize(widthMeasureSpec)

        val heightMode = View.MeasureSpec.getMode(heightMeasureSpec)

        val heightSize = View.MeasureSpec.getSize(heightMeasureSpec)

        val width: Int

        val height: Int

        //Measure Width

        if (widthMode == View.MeasureSpec.EXACTLY) {

            //Must be this size

            width = widthSize

        } else if (widthMode == View.MeasureSpec.AT_MOST) {

            //Can't be bigger than...

            width = Math.min(viewWidth, widthSize)

        } else {

            //Be whatever you want

            width = viewWidth

        }

        //Measure Height

        if (heightMode == View.MeasureSpec.EXACTLY || widthMode == View.MeasureSpec.EXACTLY) {

            //Must be this size

            height = heightSize

        } else if (heightMode == View.MeasureSpec.AT_MOST) {

            //Can't be bigger than...

            height = Math.min(viewHeight, heightSize)

        } else {

            //Be whatever you want

            height = viewHeight

        }

        setMeasuredDimension(width, height)

    }




 private fun setUpBounds(layoutWidth: Int, layoutHeight: Int) {

        val paddingTop = paddingTop

        val paddingBottom = paddingBottom

        val paddingLeft = paddingLeft

        val paddingRight = paddingRight

        if (!fillRadius) {

            // Width should equal to Height, find the min value to setup the circle

            val minValue = Math.min(layoutWidth - paddingLeft - paddingRight,

                    layoutHeight - paddingBottom - paddingTop)

            val circleDiameter = Math.min(minValue, circleRadius * 2 - barWidth * 2)

            // Calc the Offset if needed for centering the wheel in the available space

            val xOffset = (layoutWidth - paddingLeft - paddingRight - circleDiameter) / 2 + paddingLeft

            val yOffset = (layoutHeight - paddingTop - paddingBottom - circleDiameter) / 2 + paddingTop

            circleBounds = RectF((xOffset + barWidth).toFloat(),

                    (yOffset + barWidth).toFloat(),

                    (xOffset + circleDiameter - barWidth).toFloat(),

                    (yOffset + circleDiameter - barWidth).toFloat())

        } else {

            circleBounds = RectF((paddingLeft + barWidth).toFloat(),

                    (paddingTop + barWidth).toFloat(),

                    (layoutWidth - paddingRight - barWidth).toFloat(),

                    (layoutHeight - paddingBottom - barWidth).toFloat())

        }

    }

  

 private fun setupPaints() {

        barPaint.color = barColor

        barPaint.isAntiAlias = true

        barPaint.style = Paint.Style.STROKE

        barPaint.strokeWidth = barWidth.toFloat()

        rimPaint.color = rimColor

        rimPaint.isAntiAlias = true

        rimPaint.style = Paint.Style.STROKE

        rimPaint.strokeWidth = rimWidth.toFloat()

    }



  fun setCallback(progressCallback: ProgressCallback) {

        callback = progressCallback

        if (!isSpinning) {

            runCallback()

        }

    }




    private fun runCallback() {

        if (callback != null) {

            val normalizedProgress = Math.round(mProgress * 100 / 360.0f).toFloat() / 100

            callback!!.onProgressUpdate(normalizedProgress)

        }

    }




    private fun runCallback(value: Float) {

        if (callback != null) {

            callback!!.onProgressUpdate(value)

        }

    }




    override fun onVisibilityChanged(changedView: View, visibility: Int) {

        super.onVisibilityChanged(changedView, visibility)

        if (visibility == View.VISIBLE) {

            lastTimeAnimated = SystemClock.uptimeMillis()

        }

    }




    private fun updateBarLength(deltaTimeInMilliSeconds: Long) {

        if (pausedTimeWithoutGrowing >= 200) {

            timeStartGrowing += deltaTimeInMilliSeconds.toDouble()

            if (timeStartGrowing > barSpinCycleTime) {

                // We completed a size change cycle

                // (growing or shrinking)

                timeStartGrowing -= barSpinCycleTime

                pausedTimeWithoutGrowing = 0

                barGrowingFromFront = !barGrowingFromFront

            }

            val distance = Math.cos((timeStartGrowing / barSpinCycleTime + 1) * Math.PI).toFloat() / 2 + 0.5f

            val destLength = 270.toFloat() - barLength

            if (barGrowingFromFront) {

                barExtraLength = distance * destLength

            } else {

                val newLength = destLength * (1 - distance)

                mProgress += barExtraLength - newLength

                barExtraLength = newLength

            }

        } else {

            pausedTimeWithoutGrowing += deltaTimeInMilliSeconds

        }

    }




  

    fun stopSpinning() {

        isSpinning = false

        mProgress = 0.0f

        mTargetProgress = 0.0f

        invalidate()

    }




    public override fun onSaveInstanceState(): Parcelable? {

        val superState = super.onSaveInstanceState()

        val ss = WheelSavedState(superState)

        // We save everything that can be changed at runtime

        ss.mProgress = this.mProgress

        ss.mTargetProgress = this.mTargetProgress

        ss.isSpinning = this.isSpinning

        ss.spinSpeed = this.spinSpeed

        ss.barWidth = this.barWidth

        ss.barColor = this.barColor

        ss.rimWidth = this.rimWidth

        ss.rimColor = this.rimColor

        ss.circleRadius = this.circleRadius

        ss.linearProgress = this.linearProgress

        ss.fillRadius = this.fillRadius

        return ss

    }




    public override fun onRestoreInstanceState(state: Parcelable) {

        if (state !is WheelSavedState) {

            super.onRestoreInstanceState(state)

            return

        }

        super.onRestoreInstanceState(state.superState)

        this.mProgress = state.mProgress

        this.mTargetProgress = state.mTargetProgress

        this.isSpinning = state.isSpinning

        this.spinSpeed = state.spinSpeed

        this.barWidth = state.barWidth

        this.barColor = state.barColor

        this.rimWidth = state.rimWidth

        this.rimColor = state.rimColor

        this.circleRadius = state.circleRadius

        this.linearProgress = state.linearProgress

        this.fillRadius = state.fillRadius

        this.lastTimeAnimated = SystemClock.uptimeMillis()

    }




   

    internal class WheelSavedState : View.BaseSavedState {

      

        var mProgress: Float = 0.toFloat()

        

        var mTargetProgress: Float = 0.toFloat()

      

        var isSpinning: Boolean = false

      

        var spinSpeed: Float = 0.toFloat()

      

        var barWidth: Int = 0

        

        var barColor: Int = 0

        

        var rimWidth: Int = 0

      

        var rimColor: Int = 0

        

        var circleRadius: Int = 0

       

        var linearProgress: Boolean = false

       

        var fillRadius: Boolean = false



        constructor(superState: Parcelable) : super(superState) {}




        private constructor(`in`: Parcel) : super(`in`) {

            this.mProgress = `in`.readFloat()

            this.mTargetProgress = `in`.readFloat()

            this.isSpinning = `in`.readByte().toInt() != 0

            this.spinSpeed = `in`.readFloat()

            this.barWidth = `in`.readInt()

            this.barColor = `in`.readInt()

            this.rimWidth = `in`.readInt()

            this.rimColor = `in`.readInt()

            this.circleRadius = `in`.readInt()

            this.linearProgress = `in`.readByte().toInt() != 0

            this.fillRadius = `in`.readByte().toInt() != 0

        }




        override fun writeToParcel(out: Parcel, flags: Int) {

            super.writeToParcel(out, flags)

            out.writeFloat(this.mProgress)

            out.writeFloat(this.mTargetProgress)

            out.writeByte((if (isSpinning) 1 else 0).toByte())

            out.writeFloat(this.spinSpeed)

            out.writeInt(this.barWidth)

            out.writeInt(this.barColor)

            out.writeInt(this.rimWidth)

            out.writeInt(this.rimColor)

            out.writeInt(this.circleRadius)

            out.writeByte((if (linearProgress) 1 else 0).toByte())

            out.writeByte((if (fillRadius) 1 else 0).toByte())

        }




        companion object {

          

            //required field that makes Parcelables from a Parcel

            val CREATOR: Parcelable.Creator<WheelSavedState> = object : Parcelable.Creator<WheelSavedState> {

                override fun createFromParcel(`in`: Parcel): WheelSavedState {

                    return WheelSavedState(`in`)

                }




                override fun newArray(size: Int): Array<WheelSavedState?> {

                    return arrayOfNulls(size)

                }

            }

        }

    }




    companion object {




        private val SCALE_TYPE = ImageView.ScaleType.CENTER_CROP

        private val BITMAP_CONFIG = Bitmap.Config.ARGB_8888

        private val COLOR_DRAWABLE_DIMENSION = 2

        private val DEFAULT_BORDER_WIDTH = 0

        private val DEFAULT_BORDER_COLOR = Color.BLACK

        private val DEFAULT_FILL_COLOR = Color.TRANSPARENT

        private val DEFAULT_BORDER_OVERLAY = false




    }




}

Let me know if you facing issue to use it.

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