fix(android): TabbedBar crash caused by setting properties before window opened

[jquick-axway]

JIRA:
https://jira.appcelerator.org/browse/TIMOB-26758

Summary:

• Crash caused by settings properties "labels" or "index" before the TabbedBar parent window has been opened.
• Moved all property handling to TiUITabbedBar.java file.
• Modified "style" JS property to return default style constant if not assigned.
• Added additional property validation with warning log messages.

Test:

1. Build and run the below code on Android.
2. Verify that the app does not crash on startup. (This is the fix.)
3. Verify that 3 tabbed bars are shown onscreen.
4. Verify top bar reads [One | Two | Three], where One is selected.
5. Verify middle bar reads [Red | Green | Blue], where Green is selected.
6. Verify bottom bar reads [Alpha | Beta | Charlie], where Charlie is selected.

var window = Ti.UI.createWindow();

var tabbedBar1 = Ti.UI.createTabbedBar({
	labels: ["One", "Two", "Three"],
	index: 0,
	top: "20%",
	width: "90%",
});
window.add(tabbedBar1);

var tabbedBar2 = Ti.UI.createTabbedBar();
tabbedBar2.labels = ["Red", "Green", "Blue"];
tabbedBar2.index = 1;
tabbedBar2.top = "40%";
tabbedBar2.width = "90%";
window.add(tabbedBar2);

var tabbedBar3 = Ti.UI.createTabbedBar({
	labels: ["Uh", "Oh"],
	index: 0,
	top: "60%",
	width: "90%",
})
tabbedBar3.labels = ["Alpha", "Beta", "Charlie"];
tabbedBar3.index = 2;
window.add(tabbedBar3);

window.open();

[build]

	Messages
📖	💾 Here's the generated SDK zipfile.
📖	✅ All tests are passing Nice one! All 3630 tests are passing.

Generated by 🚫 dangerJS against a1b092d

[ypbnv]

CR: Pass

Just one typo in a comment.

[ssjsamir]

FR Passed: Changing TabbedBar properties "labels" and "index" before opening window no longer causes and application crash. Tested following the steps mentioned in the description above.

Test Environment

Google pixel xl 7.1.1 sim
APPC CLI: 7.0.10
Operating System Name: Mac OS Mojave
Operating System Version: 10.14.2
Node.js Version: 8.9.1
Xcode 10.1

[hansemannn]

@jquick-axway @ypbnv This does not work correctly and even causes a UI glitch now. See the ticket for details.