系統(tǒng)版本的判斷
<pre><code>
/*
- System Versioning Preprocessor Macros
*/
define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)
/*
- Usage
*/
if (SYSTEM_VERSION_LESS_THAN(@"4.0")) {
...
}
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"3.1.1")) {
...
}
或者
define IS_IPHONE5 (([[UIScreen mainScreen] bounds].size.height-568)?NO:YES)
define IS_OS_5_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 5.0)
define IS_OS_6_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 6.0)
define IS_OS_7_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)
define IS_OS_8_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
</code></pre>
APP版本的判斷
<pre><code>
- (NSString *) appVersion
{
return [[NSBundle mainBundle] objectForInfoDictionaryKey: @"CFBundleShortVersionString"];
}
</code></pre>
build版本判斷
<pre><code>
- (NSString *) build
{
return [[NSBundle mainBundle] objectForInfoDictionaryKey: (NSString *)kCFBundleVersionKey];
}
</code></pre>
