NativeScript: Version 2.2.0 released

For those living in a dungeon hacking out code; guess what was released by those fine wizards at Telerik today!     Yes, you got it - v2.2.0 of NativeScript is now available!   Upgrade Instructions below.

As usual; if you run into any issues I will be putting any common issues at the bottom of this post as I and others run into them....

New or Fixed Features:

• Android now properly supports some the of the Java classes that were broken in 2.1 (Major)
• Nested Bindables
• Letter Spacing is now all in EM Units (CSS: letter-spacing)
• CSS supports new properties, more selectors and even pseudo selectors (Major)
• Android Launch Screen Support
• Observable's are now auto-nesting (this can cause a breaking changes -- see known issues below)

A Lot of other smaller bug fixes and enhancements went into place; unfortunately the really big feature for 2.2.0 has slipped -- threads.   It was bigger than a single point release could handle; I've seen progress on both Android and iOS on this front; so I have high hopes it will make it in 2.3.0...

Upgrading:

First of all to upgrade is done is a couple steps:
> npm install -g nativescript
> npm install tns-core-modules@latest --save

For Android:
> tns platform remove android
> tns platform add android

For iOS
> tns platform remove ios
> tns platform add ios

Then you can type tns info and verify that everything says v2.2.x

 

Common Issues

Nested Observables might throw an error

(iOS) TypeError: Cannot set property 'disableNotifications' of undefined
(Android) TypeError: undefined is not an object

If you have objects like

var x = new Observable({
y: new ObservableArray([])
});

This will probably throw the above error; eliminate the nesting; and make the structure like this:

var x = new Observable({
y: []
});

Github issue: https://github.com/NativeScript/NativeScript/issues/2457

x86_64 bit Emulator on iOS might crash on code that is fine.

Error:

Service exited due to signal: Segmentation fault: 11

Solution: Switch to a 32bit emulator like the iPhone 4s.

Github Issue: https://github.com/NativeScript/ios-runtime/issues/622

 

Angular 2 cssClasses Incompatibility

ORIGINAL EXCEPTION: TypeError: _this.cssClasses(...).set is not a function

You need to upgrade your NativeScript-Angular version to the latest version; the older version which worked with v2.1.0 of NativeScript is incompatible with v2.2.0. You should be able to do a

> npm install nativescipt-angular@latest --save