2hamed

private var recordRadius: Float = 0f
private val recordRect = RectF()
private val recordPaint = Paint().apply {
    color = Color.RED
}

override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec)
    if (measuredHeight > 0 && measuredWidth > 0) {
        ...

2hamed

enum class Mode {
    Idle, Ready, Recording, Loading
}

2hamed

override fun onDraw(canvas: Canvas) {
    canvas.drawCircle(cx, cy, radius, outerPaint)
    canvas.drawCircle(cx, cy, radius - radiusDiff, innerPaint)
}

2hamed

private val radiusDiff = dpToPx(10).toFloat()

private val innerPaint = Paint().apply {
    color = Color.WHITE
    isAntiAlias = true
}
private val outerPaint = Paint().apply {
    color = Color.parseColor("#99FFFFFF")
    strokeWidth = radiusDiff.toFloat()
    style = Paint.Style.FILL

2hamed

private var cx: Float = 0f // x coordinate of the center
private var cy: Float = 0f // y coordinate of the center
private var radius: Float = 0f // the radius of the view = min(width, height) * 0.95

override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec)
    if (measuredHeight > 0 && measuredWidth > 0) {
        cx = measuredWidth / 2f
        cy = measuredHeight / 2f
        radius = Math.min(measuredHeight, measuredWidth) / 2 * 0.95f - paddingBottom

2hamed

class RecordButton : View {
    constructor(context: Context) : super(context)
    constructor(context: Context, attributeSet: AttributeSet) : super(context, attributeSet)
}

2hamed

navEvents.subscribe {
    when (it.destination) {
        NavEvent.Destination.ONE -> navController.popBackStack(R.id.fragmentOne, false)
        NavEvent.Destination.TWO -> navController.navigate(R.id.action_fragmentOne_to_fragmentTwo)
        NavEvent.Destination.THREE -> when (navController.currentDestination!!.id) {
            R.id.fragmentOne -> navController.navigate(R.id.action_fragmentOne_to_fragmentThree)
            R.id.fragmentTwo -> navController.navigate(R.id.action_fragmentTwo_to_fragmentThree)
        }
        NavEvent.Destination.FOUR -> navController.navigate(R.id.action_fragmentTwo_to_fragmentFour)
    }

2hamed

class FragmentOne: Fragment() {
    @Inject
    lateinit var navEvents: PublishProcessor<NavEvent>

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        (context!!.applicationContext as App).di.inject(this)
    }
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View =
            inflater.inflate(R.layout.fragment_one, container, false)

2hamed

navEvents.subscribe {
    when (it.destination) {
        NavEvent.Destination.ONE -> navController.popBackStack(R.id.fragmentOne, false)
        NavEvent.Destination.TWO -> navController.navigate(R.id.action_fragmentOne_to_fragmentTwo)
        NavEvent.Destination.THREE -> navController.navigate(R.id.action_fragmentOne_to_fragmentThree)
        NavEvent.Destination.FOUR -> navController.navigate(R.id.action_fragmentTwo_to_fragmentFour)
    }
}

2hamed

class MainActivity : AppCompatActivity() {

    @Inject
    lateinit var navEvents: PublishProcessor<NavEvent>

    lateinit var navController: NavController

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)