#import"ViewController.h" //遵守协议 @interfaceViewController () @property(n...

@implementation ViewController - (void)viewDidLoad { [super viewDidLoad]...

#import"ViewController.h" @interfaceViewController() //标题标签 @property(no...

#import"ViewController.h" //标题标签 @property(nonatomic,strong)UILabel*titl...