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NSDate *currentDate = [NSDate date];NSCalendar* calendar = [NSCalendar currentCalendar];NSDateComponents* components = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate:currentDate]; // Get necessary date components[components month] //gives you month[components 阅读全文
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1.将 xib 文件名手动更改为 xxx~iphone.xib 和 xxx~ipad.xib2.初始化时使用 [[xxx alloc] init] 即可，系统会自动判断系统类型并加载对应的 xib 文件RFSendFeedbackViewController *viewController = [[RFSendFeedbackViewController alloc] init];RFNavigationController *navController = [[RFNavigationController alloc] initWithRootViewController:viewContr 阅读全文
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https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/LoadingResources/Introduction/Introduction.html#//apple_ref/doc/uid/10000051i-CH1-SW1 阅读全文
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http://vocaro.com/trevor/blog/2009/10/12/resize-a-uiimage-the-right-way/ 阅读全文
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from:stackoverflowThe view'swindow propertyis non-nil if a view is currently visible, so check the main view in the view controller:[EDIT]Invoking theviewmethod causes the view to load (if it is not loaded) which is unnecessary and may be undesirable. It would be better to check first to see if 阅读全文
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UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0); [image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; 阅读全文
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- (void)setTabBarHidden:(BOOL)hidden{ UIView *tab = self.tabBarController.view; if ([tab.subviews count] < 2) { return; } UIView *view; if ([[tab.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]]) { view = [tab.subviews objectAtIndex:1]; } else { ... 阅读全文
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http://blog.bubbly.net/2013/09/11/slick-tricks-for-ios-blur-effect/Full sample sources available athttps://github.com/kronik/DKLiveBlur 阅读全文
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http://stackoverflow.com/a/8874812 阅读全文
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http://stackoverflow.com/a/5379013 阅读全文