在.m 文件 扩展中申明 @interfaceClassName()/* 左边Item */@property(strong,nonatomic)UIButton*leftItemButton;/* 右边Item */@property(strong,nonatomic)UIButton*rightItemButton;/* 搜索按钮 */@property(strong,nonatomic)UIButton*searchButton;@end 添加点击事件 _leftItemButton = ({UIButton* button =...
1.这是AFN3.0里边的一段代码.利用的是技术信号的形式,等待异步执行的结果,并将结果返回. - (NSArray *)tasksForKeyPath:(NSString *)keyPath { __block NSArray *tasks = nil; dispatch_semaphore_t semaphore = dispatch_semaphore_create(0); [self.session getTasksWithCompletionHandler:^(NSArray *dataTa...
@interface ClassName () /* 左边Item */ @property (strong , nonatomic)UIButton *leftItemButton; /* 右边Item */ @property (strong , nonatomic)UIButton *rightItemButton; /* 搜索按钮 */ @property (strong , nonatomic)UIButton *searchButton; @end 添加点击事件 _leftItemButton = ({ UIButton...