Understanding WindowInsets - Android Worldwide

Transcript

1. Understanding
   WindowInsets
   KeepTruckin
   Subhrajyoti Sen Android Worldwide
   July 2021
   

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2. What are Insets?
   

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3. Insets - Types
   

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4. Insets - Types
   • Status Bars
   

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5. Insets - Types
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   Status Bars
   Navigation Bars
   

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6. Insets - Types
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   •
   •
   Status Bars
   Navigation Bars
   Caption Bar
   

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7. Insets - Types
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   •
   •
   •
   Status Bars
   Navigation Bars
   Caption Bar
   IME
   

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8. Insets - Types
   •
   •
   •
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   Status Bars
   Navigation Bars
   Caption Bar
   IME
   System Gestures
   

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9. Insets - Types
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   •
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   Status Bars
   Navigation Bars
   Caption Bar
   IME
   System Gestures
   Display Cutouts
   

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10. Insets
    Status Bar
    Navigation Bar
    

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11. Improving the UI
    

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13. Going Full Screen
    view.systemUiVisibility =
    View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
    View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
    

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14. Going Full Screen
    view.systemUiVisibility =
    View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
    View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
    On API 30+
    

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15. Going Full Screen
    window.setDecorFitsSystemWindows(false)
    On API 30+
    

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16. Going Full Screen
    WindowCompat.setDecorFitsSystemWindows(window, false)
    On API 30+ (backward compatible till API 21)
    

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17. Now we have full screen...but
    

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18. Before After
    

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19. Fetching WindowInsets
    

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20. Fetching WindowInsets
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    }
    

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21. Fetching WindowInsets
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    val navigationBarHeight =
    insets.getInsets()
    }
    

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22. Fetching WindowInsets
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    val navigationBarHeight =
    insets.getInsets(
    WindowInsets.Type.navigationBars()
    )
    }
    

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23. Fetching WindowInsets
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    val navigationBarHeight =
    insets.getInsets(
    WindowInsets.Type.navigationBars()
    ).bottom
    }
    

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24. Fetching WindowInsets
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    val navigationBarHeight =
    insets.getInsets(
    WindowInsets.Type.navigationBars()
    ).bottom
    (binding.root.layoutParams as? ViewGroup.MarginLayoutParams)?.
    bottomMargin = navigationBarHeight
    }
    

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25. Fetching WindowInsets
    insets.getInsets(WindowInsets.Type.navigationBars()).bottom
    On API 29+
    

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26. Fetching WindowInsets
    On API 21+
    

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27. Fetching WindowInsets
    WindowInsetsCompat
    .toWindowInsetsCompat(insets)
    .getInsets(
    WindowInsetsCompat.Type.navigationBars()
    ).bottom
    On API 21+
    

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28. Insetter to the rescue
    

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29. Insetter to the rescue
    Insetter.builder()
    .marginBottom(windowInsetTypesOf(navigationBars = true))
    .applyToView(rootView)
    

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30. Done
    

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31. Not yet...
    

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33. Introduce a notch
    

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35. Padding for Notch (Display Cutout)
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    notchHeight = WindowInsetsCompat.toWindowInsetsCompat(insets)
    .getInsets(WindowInsetsCompat.Type.displayCutout())
    .top
    }
    

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36. Padding for Notch (Display Cutout)
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    notchHeight = WindowInsetsCompat.toWindowInsetsCompat(insets)
    .getInsets(WindowInsetsCompat.Type.displayCutout())
    .top
    }
    

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37. Padding for Notch (Display Cutout)
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    notchHeight = WindowInsetsCompat.toWindowInsetsCompat(insets)
    .getInsets(WindowInsetsCompat.Type.displayCutout())
    .top
    }
    

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38. Padding for Notch (Display Cutout)
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    notchHeight = WindowInsetsCompat.toWindowInsetsCompat(insets)
    .getInsets(WindowInsetsCompat.Type.displayCutout())
    .top
    binding.toolbar.updatePadding(top= notchHeight)
    insets
    }
    

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39. Doing more with WindowInsets API
    

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40. Status Bar Appearance (Earlier)
    val decor = window.decorView
    decor.systemUiVisibility = decor.systemUiVisibility or
    View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
    Light status bar
    

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41. Status Bar Appearance (Earlier)
    val decor = window.decorView
    decor.systemUiVisibility = decor.systemUiVisibility or
    View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR.inv()
    Dark status bar
    

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42. Status Bar Appearance (Earlier)
    val decor = window.decorView
    decor.systemUiVisibility = decor.systemUiVisibility or
    View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR.inv()
    On API 30+
    

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43. Status Bar Appearance
    WindowCompat.getInsetsController(
    window,
    window.decorView
    )?.isAppearanceLightStatusBars = false
    On API 21+
    

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44. Show/Hide keyboard
    

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45. Show keyboard
    val controller = WindowCompat.getInsetsController(
    window,
    window.decorView
    )
    controller?.show(WindowInsetsCompat.Type.ime())
    

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46. Hide keyboard
    val controller = WindowCompat.getInsetsController(
    window,
    window.decorView
    )
    controller?.hide(WindowInsetsCompat.Type.ime())
    

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47. Hide status bar
    val controller = WindowCompat.getInsetsController(
    window,
    window.decorView
    )
    controller?.hide(WindowInsetsCompat.Type.statusBars())
    

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48. Check keyboard visibility
    binding.root.setOnApplyWindowInsetsListener { _, insets ->
    val visible = WindowInsetsCompat.toWindowInsetsCompat(insets)
    .isVisible(WindowInsetsCompat.Type.ime())
    }
    

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49. New APIs in Android 12
    

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50. Rounded Corners
    

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51. Rounded Corners
    android.view.RoundedCorner
    

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52. Rounded Corners
    android.view.RoundedCorner
    WindowInsets.getRoundedCorner(int position)
    

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53. Privacy Indicators
    

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54. Privacy Indicators
    WindowInsets.getPrivacyIndicatorBounds() : Rect
    

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55. @iamsubhrajyoti
    

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