12 2012 档案
摘要：static Singleton *sharedSingleton = nil;+(Singleton *)sharedInstance{ if (sharedSingleton == nil) { sharedSingleton = [[super allocWithZone:NULL] init]; } return sharedSingleton;}+(id)allocWithZone:(NSZone *)zone{ return [[self sharedInstance] retain];}-(id)copyWithZone:(NSZone *)...
阅读全文
摘要：在引用计数方式下，二者没有什么不同，你通常要使用drain在GC（garbage-collected）环境下，drain会在必要时引起GC作用，然而release是个空操作。http://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSAutoreleasePool_Class/Reference/Reference.html#//apple_ref/doc/uid/20000051-SW5In a garbage-collected environment, there is
阅读全文
摘要：//长按事件的手势监听实现方法- (void) myHandleTableviewCellLongPressed:(UILongPressGestureRecognizer *)gestureRecognizer { if (gestureRecognizer.state == UIGestureRecognizerStateBegan) { NSLog(@"UIGestureRecognizerStateBegan"); } if (gestureRecognizer.state == UIGestureRecognizerStateChanged) { ...
阅读全文
