Sorry, but you aren&#39;t right. The iPhone 3G and iPod Touch 2G are able to run iOS 4 (barely) and they include a armv6 processor.

&lt;pre&gt;
ARMv8 / ARM64 = iPhone 5s, iPad Air, Retina iPad Mini
ARMv7s = iPhone 5, iPhone 5c, iPad 4
ARMv7  = iPhone 3GS, iPhone 4, iPhone 4S, iPod 3G/4G/5G, iPad, iPad 2, iPad 3, iPad Mini  
ARMv6  = iPhone, iPhone 3G, iPod 1G/2G
&lt;/pre&gt;

iOS 4.3+ requires ARMv7. If your Deployment Target is 4.3, you can exclude armv6 support.

As of XCode 4.5 you cannot build for armv6 @Paul de Lange



You can safely drop armv6 support **IF** you set your deployment target to **4.3**. 
This is because iOS 4 can be installed on armv6 devices only up to 4.2.

I am searching for the shortest way (in code) to initialize list of strings and array of strings, i.e. list/array containing 
&quot;s1&quot;, &quot;s2&quot;, &quot;s3&quot; string elements.



What is the shortest way to initialize List of strings in java?

    class TodoList(models.Model):
        title = models.CharField(maxlength=100)
        slug = models.SlugField(maxlength=100)
        def save(self):
            self.slug = title
            super(TodoList, self).save()

I&#39;m assuming the above is how to create and store a slug when a title is inserted into the table TodoList, if not, please correct me!

Anyhow, I&#39;ve been looking into pre_save() as another way to do this, but can&#39;t figure out how it works.  How do you do it with pre_save()?

is it like

    def pre_save(self):
         self.slug = title

I&#39;m guessing no.  What is the code to do this?

Thanks!

Populating django field with pre_save()?

At the moment I&#39;m compiling for both armv6 and armv7. I&#39;ve also set the target iOS version as 4.0.

Am I right in saying that all devices capable of running iOS 4.0+ are armv7, and thus I can stop compiling for armv6?

Not a big deal, but it means that my app&#39;s binary will be quite a bit smaller if I can.

Do I need to add armv6 support when limiting apps to iOS 4.0+?

At the moment I'm compiling for both armv6 and armv7. I've also set the target iOS version as 4.0.
Am I right in saying that all devices capable of running iOS 4.0+ are armv7, and thus I can stop compiling for armv6?
Not a big deal, but it means that my app's binary will be quite a bit smaller if I can.

I have just released my app for iOS, but I&#39;m not sure how to make my app safe from being used by jailbrakers. 

Can I do something to prevent my app working on jailbroken devices?

How to detect that the app is running on a jailbroken device?

I want to change the accessory view type of a cell through the method: didSelectRowAtIndexPath , i.e. when a row is selected I want to change the accessory view type, can I do this inside that method ?

How to reach the current selected cell in didSelectRowAtIndexPath?

I am doing a login page. I have UITextField for password.

Obviously, I do not want the password to be seen; instead, I want circles to show when typing.
How do you set the field for this to happen?


Obscure a UITextField password

How would I go about drawing a custom UIView that is literally just a ball (a 2D circle)? Would I just override the drawRect method? And can someone show me the code for drawing a blue circle? 

Also, would it be okay to change the frame of that view within the class itself? Or do I need to change the frame from a different class?

(just trying to set up a ball bouncing around)

How to draw a custom UIView that is just a circle - iPhone app

It seems that `NSDateFormatter` has a &quot;feature&quot; that bites you unexpectedly:  If you do a simple &quot;fixed&quot; format operation such as:

    NSDateFormatter* fmt = [[NSDateFormatter alloc] init];
    [fmt setDateFormat:@&quot;yyyyMMddHHmmss&quot;];
    NSString* dateStr = [fmt stringFromDate:someDate];
    [fmt release];

Then it works fine in the US and most locales UNTIL ... someone with their phone set to a 24-hour region sets the 12/24 hour switch in settings to 12.  Then the above starts tacking &quot;AM&quot; or &quot;PM&quot; onto the end of the resulting string.

(See, eg, https://stackoverflow.com/questions/143075/nsdateformatter-am-i-doing-something-wrong-or-is-this-a-bug)

(And see https://developer.apple.com/library/content/qa/qa1480/_index.html)

Apparently Apple has declared this to be &quot;BAD&quot; -- Broken As Designed, and they aren&#39;t going to fix it.

The circumvention is apparently to set the locale of the date formatter for a specific region, generally the US, but this is a bit messy:

    NSLocale *loc = [[NSLocale alloc] initWithLocaleIdentifier:@&quot;en_US&quot;];
    [df setLocale: loc];
    [loc release];

Not too bad in onsies-twosies, but I&#39;m dealing with about ten different apps, and the first one I look at has 43 instances of this scenario.

So any clever ideas for a macro/overridden class/whatever to minimize the effort to change everything, without making the code to obscure?  (My first instinct is to override NSDateFormatter with a version that would set the locale in the init method.  Requires changing two lines -- the alloc/init line and the added import.)

##Added

This is what I&#39;ve come up with so far -- seems to work in all scenarios:


    @implementation BNSDateFormatter

    -(id)init {
	static NSLocale* en_US_POSIX = nil;
	NSDateFormatter* me = [super init];
	if (en_US_POSIX == nil) {
		en_US_POSIX = [[NSLocale alloc] initWithLocaleIdentifier:@&quot;en_US_POSIX&quot;];
	}
	[me setLocale:en_US_POSIX];
	return me;
    }

    @end

##Bounty!
I&#39;ll award the bounty to the best (legitimate) suggestion/critique I see by mid-day Tuesday. [See below -- deadline extended.]

##Update
Re OMZ&#39;s proposal, here is what I&#39;m finding --

Here is the category version -- h file:


    #import &lt;Foundation/Foundation.h&gt;


    @interface NSDateFormatter (Locale)
    - (id)initWithSafeLocale;
    @end

Category m file:


    #import &quot;NSDateFormatter+Locale.h&quot;


    @implementation NSDateFormatter (Locale)

    - (id)initWithSafeLocale {
	static NSLocale* en_US_POSIX = nil;
	self = [super init];
	if (en_US_POSIX == nil) {
		en_US_POSIX = [[NSLocale alloc] initWithLocaleIdentifier:@&quot;en_US_POSIX&quot;];
	}
	NSLog(@&quot;Category&#39;s locale: %@ %@&quot;, en_US_POSIX.description, [en_US_POSIX localeIdentifier]);
	[self setLocale:en_US_POSIX];
	return self;	
    }

    @end

The code:

	
	NSDateFormatter* fmt;
	NSString* dateString;
	NSDate* date1;
	NSDate* date2;
	NSDate* date3;
	NSDate* date4;
	
	fmt = [[NSDateFormatter alloc] initWithSafeLocale];
	[fmt setDateFormat:@&quot;yyyy-MM-dd HH:mm:ss&quot;];
	dateString = [fmt stringFromDate:[NSDate date]];
	NSLog(@&quot;dateString = %@&quot;, dateString);
	date1 = [fmt dateFromString:@&quot;2001-05-05 12:34:56&quot;];
	NSLog(@&quot;date1 = %@&quot;, date1.description);
	date2 = [fmt dateFromString:@&quot;2001-05-05 22:34:56&quot;];
	NSLog(@&quot;date2 = %@&quot;, date2.description);
	date3 = [fmt dateFromString:@&quot;2001-05-05 12:34:56PM&quot;];	
	NSLog(@&quot;date3 = %@&quot;, date3.description);
	date4 = [fmt dateFromString:@&quot;2001-05-05 12:34:56 PM&quot;];	
	NSLog(@&quot;date4 = %@&quot;, date4.description);
	[fmt release];
	
	fmt = [[BNSDateFormatter alloc] init];
	[fmt setDateFormat:@&quot;yyyy-MM-dd HH:mm:ss&quot;];
	dateString = [fmt stringFromDate:[NSDate date]];
	NSLog(@&quot;dateString = %@&quot;, dateString);
	date1 = [fmt dateFromString:@&quot;2001-05-05 12:34:56&quot;];
	NSLog(@&quot;date1 = %@&quot;, date1.description);
	date2 = [fmt dateFromString:@&quot;2001-05-05 22:34:56&quot;];
	NSLog(@&quot;date2 = %@&quot;, date2.description);
	date3 = [fmt dateFromString:@&quot;2001-05-05 12:34:56PM&quot;];	
	NSLog(@&quot;date3 = %@&quot;, date3.description);
	date4 = [fmt dateFromString:@&quot;2001-05-05 12:34:56 PM&quot;];	
	NSLog(@&quot;date4 = %@&quot;, date4.description);
	[fmt release];

The result:


    2011-07-11 17:44:43.243 DemoApp[160:307] Category&#39;s locale: &lt;__NSCFLocale: 0x11a820&gt; en_US_POSIX
    2011-07-11 17:44:43.257 DemoApp[160:307] dateString = 2011-07-11 05:44:43 PM
    2011-07-11 17:44:43.264 DemoApp[160:307] date1 = (null)
    2011-07-11 17:44:43.272 DemoApp[160:307] date2 = (null)
    2011-07-11 17:44:43.280 DemoApp[160:307] date3 = (null)
    2011-07-11 17:44:43.298 DemoApp[160:307] date4 = 2001-05-05 05:34:56 PM +0000
    2011-07-11 17:44:43.311 DemoApp[160:307] Extended class&#39;s locale: &lt;__NSCFLocale: 0x11a820&gt; en_US_POSIX
    2011-07-11 17:44:43.336 DemoApp[160:307] dateString = 2011-07-11 17:44:43
    2011-07-11 17:44:43.352 DemoApp[160:307] date1 = 2001-05-05 05:34:56 PM +0000
    2011-07-11 17:44:43.369 DemoApp[160:307] date2 = 2001-05-06 03:34:56 AM +0000
    2011-07-11 17:44:43.380 DemoApp[160:307] date3 = (null)
    2011-07-11 17:44:43.392 DemoApp[160:307] date4 = (null)

The phone [make that an iPod Touch] is set to Great Britain, with the 12/24 switch set to 12.  There&#39;s a clear difference in the two results, and I judge the category version to be wrong.  Note that the log in the category version IS getting executed (and stops placed in the code are hit), so it&#39;s not simply a case of the code somehow not getting used.

##Bounty update:
Since I haven&#39;t gotten any applicable replies yet I&#39;ll extend the bounty deadline for another day or two.

Bounty ends in 21 hours -- it&#39;ll go to whoever makes the most effort to help, even if the answer isn&#39;t really useful in my case.

##A curious observation

Modified the category implementation slightly:

    #import &quot;NSDateFormatter+Locale.h&quot;

    @implementation NSDateFormatter (Locale)

    - (id)initWithSafeLocale {
	static NSLocale* en_US_POSIX2 = nil;
	self = [super init];
	if (en_US_POSIX2 == nil) {
		en_US_POSIX2 = [[NSLocale alloc] initWithLocaleIdentifier:@&quot;en_US_POSIX&quot;];
	}
	NSLog(@&quot;Category&#39;s locale: %@ %@&quot;, en_US_POSIX2.description, [en_US_POSIX2 localeIdentifier]);
	[self setLocale:en_US_POSIX2];
	NSLog(@&quot;Category&#39;s object: %@ and object&#39;s locale: %@ %@&quot;, self.description, self.locale.description, [self.locale localeIdentifier]);
	return self;    
    }

    @end

Basically just changed the name of the static locale variable (in case there was some conflict with the static declared in the subclass) and added the extra NSLog.  But look what that NSLog prints:

    2011-07-15 16:35:24.322 DemoApp[214:307] Category&#39;s locale: &lt;__NSCFLocale: 0x160550&gt; en_US_POSIX
    2011-07-15 16:35:24.338 DemoApp[214:307] Category&#39;s object: &lt;NSDateFormatter: 0x160d90&gt; and object&#39;s locale: &lt;__NSCFLocale: 0x12be70&gt; en_GB
    2011-07-15 16:35:24.345 DemoApp[214:307] dateString = 2011-07-15 04:35:24 PM
    2011-07-15 16:35:24.370 DemoApp[214:307] date1 = (null)
    2011-07-15 16:35:24.378 DemoApp[214:307] date2 = (null)
    2011-07-15 16:35:24.390 DemoApp[214:307] date3 = (null)
    2011-07-15 16:35:24.404 DemoApp[214:307] date4 = 2001-05-05 05:34:56 PM +0000

As you can see, the setLocale simply didn&#39;t.  The locale of the formatter is still en_GB.  It appears that there is something &quot;strange&quot; about an init method in a category.

##Final answer

See the [accepted answer](https://stackoverflow.com/a/6735644/581994) below.

What is the best way to deal with the NSDateFormatter locale &quot;feechur&quot;?

Can anyone explain what is the life cycle process of iPhone? i.e from the start to end of the application life cycle.

What is the Life Cycle of an iPhone application?

How can I make a multiline `UILabel` in interface builder for iOS? I tried the `UITextView` but it didn&#39;t quite suit my needs.

How can I add multiline (text) in label?

iOS multiline label in Interface builder

In my current project I make use of multiple .so files. These are located at the armeabi and armeabi-v7a folder. Unfortunately one of the .so files is a 6MB and I need to reduce file size. Instead of having a fat APK file, I would like to use just the armeabi files and remove the armeabi-v7a folder.

According to the NDK documentation, armeabi-v7a code is extended armeabi code which can contain extra CPU instructions. This all goes beyond my expertise, but I question why one would like to have both armeabi-v7a and armeabi code. There must be a good reason to have both, right?

On my test devices this all seem to work fine. These have ARM v7 CPU&#39;s. Is it safe to assume that everything works now?

Why use armeabi-v7a code over armeabi code?

I know that this is not possible and Apple planned it this way to force the users to upgrade their devices. But I just want to know if there is some workaround or hacks in able to do this? The client insists that we should still support armv6 because of a still &quot;large&quot; percentage of the app users.

I know a command called `lipo` to merge static libraries and I read somewhere that we can also use it to merge ipa files but I&#39;m not sure how its exactly done. I did a couple of searching around already on google and this site, buts its hard to find a concrete answer.

How to support both armv6 and armv7s for release build in xcode 4.5

Upgraded to Studio Canary build. My previous project of Telegram Messenger is giving following error.

&gt; Error:All flavors must now belong to a named flavor dimension. The flavor &#39;armv7&#39; is not assigned to a flavor dimension. Learn more at https://d.android.com/r/tools/flavorDimensions-missing-error-message.html

What should I do? I have already seen that link but couldn&#39;t understand what to do. I have 3 build variants now, release,debug and foss.

Content Type	Original Author	Original Content on Stackoverflow
Question	Jordan Smith	View Question on Stackoverflow
Solution 1 - Iphone	Henrik P. Hessel	View Answer on Stackoverflow
Solution 2 - Iphone	Nicolas Miari	View Answer on Stackoverflow

Do I need to add armv6 support when limiting apps to iOS 4.0+?

Iphone Problem Overview

Iphone Solutions

Solution 1 - Iphone

Solution 2 - Iphone

Populating django field with pre_save()?

What is the shortest way to initialize List of strings in java?

Attributions