44. Why are implicit broadcasts restricted in Android 8.0 (Oreo) and later?
To improve performance and battery life, Android 8.0 restricts implicit broadcasts to prevent unnecessary wake-ups.

Solution:
Use JobScheduler or WorkManager for background tasks.
Use LocalBroadcastManager for app-specific broadcasts.

74. What is lifecycle of a Custom View?

The lifecycle of a custom View in Android follows a sequence of method calls from creation to destruction. Below is the typical lifecycle of a custom View:

• Constructor (Initialization)
  Called when the View is created. This is where attributes, styles, and initial setup happen.
  Example:

  class CustomView @JvmOverloads constructor(
  context: Context,
  attrs: AttributeSet? = null,
  defStyleAttr: Int = 0
  ) : View(context, attrs, defStyleAttr) {
  init {
  // Initialization code
  }
  }

• onAttachedToWindow()
  Called when the View is attached to a window.
  Useful for registering listeners or resources.
• onMeasure(int widthMeasureSpec, int heightMeasureSpec)
  Determines the View’s dimensions.
  Needs to call setMeasuredDimension(width, height).

  Example:

  override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
  val width = MeasureSpec.getSize(widthMeasureSpec)
  val height = MeasureSpec.getSize(heightMeasureSpec)
  setMeasuredDimension(width, height)
  }

• onSizeChanged(int w, int h, int oldw, int oldh)
  Called when the View’s size changes.
• onLayout(boolean changed, int left, int top, int right, int bottom) (For ViewGroups only)
  Used to position child Views in a custom ViewGroup.
• onDraw(Canvas canvas)
  Draws the View’s content on the screen.
  Example:
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  override fun onDraw(canvas: Canvas) {
  super.onDraw(canvas)
  canvas.drawCircle(width / 2f, height / 2f, 50f, Paint().apply { color = Color.RED })
  }
  7. onTouchEvent(MotionEvent event)
  Handles user interactions like touch events.

  Example:

  override fun onTouchEvent(event: MotionEvent): Boolean {
  if (event.action == MotionEvent.ACTION_DOWN) {
  // Handle touch
  return true
  }
  return super.onTouchEvent(event)
  }

• onDetachedFromWindow()
  Called when the View is removed from the window.
  Used for cleanup like unregistering listeners.
• Garbage Collection
  When no longer referenced, the View is garbage collected.