Android Developersಪರಿಶೀಲಿಸಿದ ಖಾತೆ

The first #AndroidP developer preview highlights are here! Learn about changes to JobScheduler, #Kotlin execution, Image Decoding (with animation), WiFi Location, Dual Camera app support, and more. Watch the full video with @dagalpin → http://goo.gl/zes4wj pic.twitter.com/YFKFu89E07

Creating classes with one role: to hold data? Mark them as “data” classes. The default implementation of equals() is generated (so are hashCode(), toString(), and copy()) and checks for structural equality. Docs: https://kotlinlang.org/docs/reference/data-classes.html#data-classes … https://kotlinlang.org/docs/reference/equality.html … #31DaysOfKotlinpic.twitter.com/GK4R22l09N

In Kotlin, classes can have mutable and read-only properties, with getters and setters generated by default. You can also implement custom ones if required. Docs: https://kotlinlang.org/docs/reference/properties.html … #31DaysOfKotlinpic.twitter.com/moZccVna32

For loops get superpowers when used with two other Kotlin features: range expressions and destructuring. Ranges: https://kotlinlang.org/docs/reference/ranges.html … Destructuring: https://kotlinlang.org/docs/reference/multi-declarations.html#destructuring-declarations … #31DaysOfKotlinpic.twitter.com/V2zOisdnHf

A switch statement with superpowers? Kotlin’s `when` expression can match on just about anything. Literal values, enums, ranges of numbers. You can even call arbitrary functions! Docs: https://kotlinlang.org/docs/reference/control-flow.html#when-expression … #31DaysOfKotlinpic.twitter.com/KTAsOVpme7

Now with prisms? Android KTX uses destructuring to assign the component values of a color. You can use destructuring in your classes, or extend existing classes to add destructuring. Docs: https://kotlinlang.org/docs/reference/multi-declarations.html … #31DaysOfKotlinpic.twitter.com/5JoDdFgYdW

Formatting Strings? Refer to variables and expressions in string literals by putting `$` in front of the variable name. Evaluate expressions using `${expression}`. Docs: https://kotlinlang.org/docs/reference/basic-types.html#string-templates … #31DaysOfKotlinpic.twitter.com/KhtOZPm71f

Handling nulls in style? Check out the elvis operator `?:`, to cut your “null-erplate”. It’s just a small bit of syntax sugar to replace nulls with a default value or even return! Docs: https://kotlinlang.org/docs/reference/null-safety.html#elvis-operator … #31DaysOfKotlinpic.twitter.com/t8ErvvIfOO

Your feedback is important! Join a user study and help shape the future of Android products Sign up here → https://goo.gl/SkHNtc pic.twitter.com/baE43MyozA

Can you use Picture in Picture in your app? Yes! Picture in Picture lets your users continue critical tasks while they work in other apps Watch @objcode cover adding PIP to your app https://goo.gl/E9dcB4 pic.twitter.com/G4ZaynlR7a

Create continuous shared element transitions between complex collections in Android Fragments by creating RecyclerView to ViewPager image transitions, postponing transitions & remapping shared element views while navigating apps Code snippets & more https://goo.gl/Txqtds pic.twitter.com/1gKFc8axsY