How ioa app compatible phone system?

Ios developer says is right, it does not even have to know, hey, but still do not know to ask, I hope you let me know!
1 Now I only judge in the development of the device size, and then display a different interface, the code is as follows:
/ / Determine the type of device
# Define iPhone5 (?. [UIScreen instancesRespondToSelector: @ selector (currentMode)] CGSizeEqualToSize (CGSizeMake (640, 1136), [[UIScreen mainScreen] currentMode] size): NO)
/ / If the device is iPhone5, 5s, 5s
if (iPhone5) {
}
/ / Otherwise iPhone4, 4s
else
{

}
2 is not in the phone system equipment have to judge it? , Xcode version I used for Version 4.6.2 (4H1003), previously let others test when people are 5.0 systems, there have been mistakes, I did not pay attention, we hope to help the younger relieve confusion. If the phone system is set properties were 5.0,6.0,7.0, and then they abandoned the property or function would not be able to call it. . . Everyone how different systems compatible version?
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The reply was deleted administrator at 2013-09-27 09:09:27

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Bangding, incidentally learning Ing, in fact, had good judgment, judgment based on the size of the main screen, and now in addition to IOS 7 of that method can not be used. . .
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Uncle Joe is gone, iOS also messed up.
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Set the best development environment for the development of 5.0 or 4.3 versions can generally low road, high version should be no problem
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4.3 can be set up
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references, 4th Floor h98458 reply:

best when set up the development environment for the development of 5.0 or 4.3 versions can generally low road, high version should be no problem

I am now in the judgment of 4,4 s and then determine where else is ios7 system or the other, if it is left ios7 sdk, the other left 6
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reference to the second floor u010013695 reply:

Bangding, incidentally learning Ing, in fact, had good judgment, judgment based on the size of the main screen, and now in addition to IOS 7 can not use that method it. . .

I think the judge is the first screen, make the page appear normal, while the system's judgment, it is a normal function of the realization app.
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reference to the third floor hslinux reply:

Uncle Joe is gone, iOS also messed up.

No way, just go along with shade trees.
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Useful if some Systems compatible API should judge, ios6.0 be different from what some of the above versions of a project done before encountered such a problem.
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reference to the 9th floor kiter521 reply:

be useful to some of the system if the Ministry of compatible API should judge, ios6.0 be different from what some of the above versions , a project done before encountered such a problem.

Now first determine the screen size, and then determine the system.
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references, 5th Floor pearlhuzhu reply:

4.3 can be set

you say is xcode4.3?
Reply:

reference to the 11th floor niepeng109 reply:

Quote: references, 5th Floor pearlhuzhu reply:

Set 4.3 on it

you say is xcode4.3?

is the Deployment Target
Reply:

reference to the 12th floor pearlhuzhu reply:

Quote: references to the 11th floor niepeng109 reply:

Quote: references, 5th Floor pearlhuzhu reply:

Set 4.3 on it

you say is xcode4.3?

is the Deployment Target

If you set the ios Deployment Target Build Settings under, then you can set the low version 4.3 is compatible with any higher version yet?
Reply:

reference to the 13th floor niepeng109 reply:

Quote: references to the 12th floor pearlhuzhu reply:

Quote: references to the 11th floor niepeng109 reply:

Quote: references, 5th Floor pearlhuzhu reply:

Set 4.3 on it

you say is xcode4.3?

is the Deployment Target

If you set the ios Deployment Target Build Settings under, then you can set the low version 4.3 is compatible with any higher version yet?

4.3 is compatible with more than a
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Well, I do not understand novice
Reply:

reference to the 14th floor pearlhuzhu reply:

Quote: references to the 13th floor niepeng109 reply:

Quote: references to the 12th floor pearlhuzhu reply:

Quote: references to the 11th floor niepeng109 reply:

Quote: references, 5th Floor pearlhuzhu reply:

Set 4.3 on it

you say is xcode4.3?

is the Deployment Target

If you set the ios Deployment Target Build Settings under, then you can set the low version 4.3 is compatible with any higher version yet?

4.3 is compatible with more than a

ah, thank you.
Reply:

reference to the 16th floor niepeng109 reply:

Quote: references to the 14th floor pearlhuzhu reply:

Quote: references to the 13th floor niepeng109 reply:

Quote: references to the 12th floor pearlhuzhu reply:

Quote: references to the 11th floor niepeng109 reply:

Quote: references, 5th Floor pearlhuzhu reply:

Set 4.3 on it

you say is xcode4.3?

is the Deployment Target

If you set the ios Deployment Target Build Settings under, then you can set the low version 4.3 is compatible with any higher version yet?

4.3 is compatible with more than a

ah, thank you.

Here you can say more than 4.3 compatible phone system, with the current version of xcode there is no relationship? I am now the latest xcode5, is able to run on all mobile phone system, but what the interface has changed appearance, had to determine the phone system.
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The reply was deleted administrator at 2013-10-14 14:33:53