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Get iOS system version, use with care [[[Uidevice Currentdevice] systemversion] floatvalue]

Source: Internet
Author: User
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The most common way to get the system version number for IOS is:

[[[Uidevice Currentdevice] systemversion] floatvalue]

However, this floatvalue is not reliable, this is a bug in the iOS SDK. Look at the performance of the above function on the 8.2 system.


If the code has the if (version >= 8.2) judgment, then the judgment will be invalidated!



Therefore, it is more reliable to use a string comparison version number.

Get iOS system version, use with care [[[Uidevice Currentdevice] systemversion] floatvalue]

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