[MonoTouch] XCode 4.2
Nic Wise
nicw at fastchicken.co.nz
Mon Oct 31 18:08:33 EDT 2011
could be. I never did VB - I went from Delphi straight into C#, via Java.
:)
On Mon, Oct 31, 2011 at 21:30, Dean Cleaver
<dean.cleaver at xceptionsoftware.com> wrote:
> Sounds more like VB and late binding.
>
> Dino
>
> -----Original Message-----
> From: monotouch-bounces at lists.ximian.com [mailto:monotouch-bounces at lists.ximian.com] On Behalf Of Nic Wise
> Sent: Monday, October 31, 2011 4:17 PM
> To: info at ploetzeneder-it.com
> Cc: monotouch at lists.ximian.com
> Subject: Re: [MonoTouch] XCode 4.2
>
> BTW, if you are thinking "thats very different to .NET!" - you are right.
>
> Obj-C is not a method-call model. It's a message passing model. Think of it like this:
>
> .NET:
>
> foo.DoSomething();
>
> // COMPILER (or linker, or runtime) error if the version of the DLL which has foo in it, doesn't have DoSomething()
>
> in Obj-C, you are not calling a method, you are sending a message, so
>
> [foo doSomething];
>
> sends a message to foo, tells it to run doSomething. If it doesn't have a doSomething, you get an exception (kinda) or it calls the "missing method" routine. I think. But the linker doesn't care, nor does the compiler (tho it checks). It's all dynamic at runtime.
>
>
>
> On Mon, Oct 31, 2011 at 21:14, Nic Wise <nicw at fastchicken.co.nz> wrote:
>> You dont need both installed.
>>
>> If you make an app with 4.2 (and MT5), it will work just fine on a
>> iOS4 (or 3.1.3) device as long as you dont call any methods which are
>> not available in the version your user is using.
>>
>> So lets say you have a class called UIMyCoolView. It has the following methods:
>>
>> void DoABasicFunction(); (available for 3.0 onwards) void
>> DoSomethingSlightlyCooler(); (4.1 onwards) void
>> DoSomethingInTheCloud(); (5.0 onwards)
>>
>> if you call
>>
>> var coolview = new UIMyCoolView();
>> coolview.DoABacicFunction(); // this will work on all devices
>> coolview.DoSomethingSlightlyCooler(); // this will crash / throw an
>> exception on 4.0 or 3.x, but work on 4.1 or better
>> coolview.DoSomethingInTheCloud(); // will cash on 4.x or 3.x, workd on
>> 5.x
>>
>> So, this piece of code is going to be VERY useful to you:
>>
>> public static bool IsIOS41OrBetter
>> {
>> get
>> {
>> string version =
>> UIDevice.CurrentDevice.SystemVersion;
>>
>> string[] versionElements =
>> version.Split('.');
>>
>> if (versionElements.Length > 0)
>> {
>> int versionInt = 0;
>> int minorVersion = 0;
>> if
>> (Int32.TryParse(versionElements[0], out versionInt))
>> {
>> if
>> (Int32.TryParse(versionElements[1], out minorVersion))
>> {
>> if (versionInt
>> >= 5) return true;
>>
>> return
>> (versionInt >= 4 && minorVersion >= 1);
>> }
>> }
>>
>> return false;
>>
>> }
>>
>> return false;
>>
>> }
>>
>> }
>>
>> (4.1 is my minimim)
>>
>> this lets me doing things like this:
>>
>> public static UIKeyboardType DecimalKeyboardType
>> {
>> get
>> {
>> if (IsIOS41OrBetter)
>> {
>> return
>> UIKeyboardType.DecimalPad;
>> }
>> return
>> UIKeyboardType.NumbersAndPunctuation;
>> }
>> }
>>
>> UIKeyboardType.DecimalPad only exists in 4.1 or newer.
>>
>> Does that make sense?
>>
>> This is why iPod Touch 3rd gen (basically, a 3G without the phone) are
>> so valuable - you can keep them on 4.2 for testing, or better yet,
>> keep them on 4.0 or 3.1.3 if you need to support that far back.
>> Personally, I stop at 4.0 now.
>>
>>
>>
>> 2011/10/31 Andreas Ploetzeneder <info at ploetzeneder-it.com>:
>>> Hi,
>>> how can i make Adhoc distributions for devices with ioS 4 with Xcode
>>> 4.2 or can i install it parallel to XCode 4.1
>>>
>>> --
>>>
>>>
>>>
>>>
>>>
>>> Mit freundlichem Gruß,
>>>
>>> Andreas Plötzeneder
>>> CEO
>>> ihr ploetzeneder it-solutions Team
>>> Mobile Development – Desktopanwendungen – Webanwendungen
>>> Tel: +43 720 30 30 24 10
>>> Fax: +43 720 30 30 24 20
>>> Email: info at ploetzeneder-it.com
>>> web: http://www.ploetzeneder-it.com
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>>
>>
>>
>> --
>> Nic Wise
>> t. +44 7788 592 806 | @fastchicken |
>> http://www.linkedin.com/in/nicwise
>> b. http://www.fastchicken.co.nz/
>>
>> Nearest Bus: find when the next bus is coming to your stop.
>> http://goo.gl/Vcz1p mobileAgent (for FreeAgent): get your accounts in your pocket.
>> http://goo.gl/IuBU
>> Trip Wallet: Keep track of your budget on the go: http://goo.gl/ePhKa
>> London Bike App: Find the nearest Boris Bike, and get riding!
>> http://goo.gl/Icp2
>>
>
>
>
> --
> Nic Wise
> t. +44 7788 592 806 | @fastchicken | http://www.linkedin.com/in/nicwise
> b. http://www.fastchicken.co.nz/
>
> Nearest Bus: find when the next bus is coming to your stop. http://goo.gl/Vcz1p mobileAgent (for FreeAgent): get your accounts in your pocket.
> http://goo.gl/IuBU
> Trip Wallet: Keep track of your budget on the go: http://goo.gl/ePhKa London Bike App: Find the nearest Boris Bike, and get riding! http://goo.gl/Icp2 _______________________________________________
> MonoTouch mailing list
> MonoTouch at lists.ximian.com
> http://lists.ximian.com/mailman/listinfo/monotouch
>
--
Nic Wise
t. +44 7788 592 806 | @fastchicken | http://www.linkedin.com/in/nicwise
b. http://www.fastchicken.co.nz/
Nearest Bus: find when the next bus is coming to your stop. http://goo.gl/Vcz1p
mobileAgent (for FreeAgent): get your accounts in your pocket.
http://goo.gl/IuBU
Trip Wallet: Keep track of your budget on the go: http://goo.gl/ePhKa
London Bike App: Find the nearest Boris Bike, and get riding! http://goo.gl/Icp2
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