Introduction to android studio 2.0 and data binding library

Introduction to android studio 2.0 and data binding library

• 1.
  Introduction to androidstudio 2.0 and Data Binding Library Kaushal Dhruw @drulabs
• 2.
  Data binding library(Beta) • Write apps faster. • Minimize glue code for UI. • No more findViewById(R.id…) • Bind data and UI with minimum lines of code. • Move basic UI logic from java class to xml layout file. • Bind data (custom variables) and events. Define custom attributes. • Supported all the way back to Android 2.1 • Available on android studio 1.3+ (Gradle plugin 1.5+ required)
• 3.
  Setting up studiofor DBL • Prerequisites - Android studio 1.3 +, Gradle plugin 1.5.0-alpha1 + • Project gradle file: • Module gradle file • And done...
• 4.
  Writing Data Bindlayouts Change the root element of layout… To this Old_sample_layout.xml Dbl_layout.xml
• 5.
  Writing Data Bindlayouts… • What happens when an xml layout is defined with layout root tag? • A binding file is generated. For prev example it will be DblLayoutBinding.java • This contains references to all the child views (as public final fields). • This binding file can now be used to populate data • What is that <data> tag? • In data tag we tell the layout processor that a java class will be used to populate data. • We can import custom or android classes inside data element. • Multiple variable declaration and imports are possible inside data tag. • Custom attributes and more in Demo…
• 6.
  Without DBL… WithDBL
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  Some Data bindingexpressions android:visibility="@{vItem.even ? View.VISIBLE : View.INVISIBLE}" android:text=@{vItem.shortName.substring(0,7)}; android:text="@{user.displayName ?? user.lastName}" android:text="@{@string/nameFormat(firstName, lastName)}" android:text="@{@plurals/banana(bananaCount)}“ app:ImageURL="@{vItem.imageUrl}“ app:loadingImage="@drawable/img_loading“ Binding Custom attributes @BindingAdapter("bind:imageURL") /*can add more attributes here*/ public static void loadImage(ImageView img, String url) { Picasso.with(img.getContext()).load(url).into(img); }
• 8.
  Android studio 2.0Preview 6 (released on Jan 20, 2016)
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  What is androidstudio??? • Google’s IDE for android development. • Built in support for Google cloud platform. • Flexible Gradle-based build system. • Built on top of latest IntelliJ IDEA platform. • Multi screen app development. • Latest version 1.5.1. • Available on android developer site. http://developer.android.com/sdk/index.html
• 10.
  Some changes sincestudio 1.0 (DEC 2014) • New Memory / GPU / CPU monitor • Vector asset studio. • Theme editor • Integrated SDK manager. • Data binding support and HAXM optimizations • Enable AdMob and Analytics from within android studio. • Live templates for quick code insertion. • And many more…
• 11.
  • Available instable build channel. • http://tools.android.com/download/studio/builds/2-0-preview. • Not recommended (still in preview stage). • Canary channel (Preview 6 available on Jan-20,2016). • http://tools.android.com/download/studio/canary/latest • Download a separate build. How to get the 2.0 preview?
• 12.
  • IDE Enhancements •Build System • Android Emulators What’s new in studio 2.0 (preview)
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  • IntelliJ 15support (15.0.2). • New GPU profiler (experimental preview). • Google search deep linking support in built. • Instant Run (Continued…) • Lot of UI improvements. IDE Enhancements
• 14.
  • Improved dxmerger (Build tools 23.0.2+, Gradle 2.0). • Pre-dexing dependencies. Gradle build 2-2.5 times faster. • New experimental shrinker for debug mode. • Shrinking only. No Obfuscation No Optimization. • Overall build – deploy – install cycle is ~1.5 times faster. • New protocol for ADB push / pull. • Huge speed improvement. • Instant Run (Gradle 2.0-alpha5+, gradlew 2.10). • Hot swap, cold swap, freeze swap Build System
• 15.
  • Completely newUI with extended controls. • Control almost every feature of emulated device • Drag and drop APKs and files. • Send SMS, receive calls. • System keyboard support & Resizing. • Finger printing support. • Select number of cores (experimental and based on number of cores in system) • And more in demo. Emulator 2.0 (requires SDK tools 25.0+)
• 16.
  How long wouldit take to develop this? Divide that time by 2 with DBL Even lesser with instant run