Design System in Android

Presentation Video on YouTube: https://youtu.be/NDCiq9rQn5c

Transcript

1. Design System In Android
2. Who am I? phelat phelat_mahdi
3. Chapter I What’s a Design System?
4. What’s a Design System? g
5. What’s a Design System? g C Component
6. What’s a Design System? Component g C Component Component Component Component
7. Chapter II Benefits of having a Design System
8. Consistency “Perfectly balanced as all things should be” - Thanos
9. Productivity “If you spend too much time thinking about a thing, you'll never get it done.” - Bruce Lee
10. Common Language “Meow” means “Woof” in cat.” - George Carlin
11. Material Design Material is an adaptable system of guidelines, components and tools.
12. Sonnat: Developer’s Perspective Chapter III
13. C Divar C Sonnat
14. colors.xml <color name="brand_primary">#A62626</color> <color name="brand_secondary">#8FA62626</color> <color name="brand_hint">#52A62626</color> <color name=“brand_divider">#1FA62626</color> colors.xml
15. colors.xml <color name=“error_primary">#FF0000</color> <color name="warning_primary">#E65100</color> <color name=“warning_secondary">#FBC02D</color> <color name="success_secondary">#7CB342</color> <color name="success_primary">#2E7D32</color> <color name="message_primary">#D7F5FF</color> <color name="message_hint">#3DD7F5FF</color>
16. fontsizes.xml <dimen name="title_1_font">20sp</dimen> <dimen name="title_2_font">18sp</dimen> <dimen name="regular_font">16sp</dimen> <dimen name="small_font">14sp</dimen> <dimen name="tiny_font">12sp</dimen>
17. Sketch Component bar / nav / NavBar Android Package bar / nav Component Name NavBar Shape Drawable shape_nav_bar_gradient Selector Drawable - States navigable[true/false], enableGradient[true, false], enableSearch[true, false] Attributes alpha, title, subtitle, actions
18. NavBar.kt class NavBar : ConstraintLayout, Component, TextWatcher { . . . }
19. NavBar.kt private lateinit var gradientBackground: View private lateinit var background: View private lateinit var navigation: AppCompatImageView private lateinit var actionContainer: LinearLayout private lateinit var title: AppCompatTextView private lateinit var subtitle: AppCompatTextView private lateinit var searchBar: AppCompatEditText private lateinit var clearSearchIcon: AppCompatImageView
20. NavBar.kt private fun initActionsContainer() { val params = LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT ).apply { topToTop = LayoutParams.PARENT_ID leftToLeft = LayoutParams.PARENT_ID bottomToBottom = LayoutParams.PARENT_ID } actionContainer = LinearLayout(context).apply { id = ACTION_CONTAINER_ID gravity = Gravity.CENTER_VERTICAL orientation = LinearLayout.HORIZONTAL } addView(actionContainer, params) }
21. NavBar.kt override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) { super.onMeasure(widthMeasureSpec, heightMeasureSpec) if (measuredHeight != dpToPx(56)) { initLayoutParams() } }
22. attrs.xml <declare-styleable name="NavBar"> <!-- STATES --> <attr name="navigable" format="boolean" /> <attr name="enableGradient" format="boolean" /> <attr name="animateLayoutChanges" format="boolean" /> <attr name="enableSearch" format="boolean" /> <!-- ATTRIBUTES --> <attr name="title" /> <attr name="subtitle" /> <attr name="alpha" format="float" /> </declare-styleable>
26. Chapter IV Accessibility
28. activity_main.xml <ImageView android:id="@+id/shareIcon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/string_action_search_label" app:srcCompat="@drawable/ic_search_icon_secondary_24dp" />
29. InfoRowUnExpandable
31. https:!//contrastratio.github.io
32. Thank You https:!//jobs.cafebazaar.ir