
IP屬地:上海
@interface ViewController () #define ScreenWidth [UIScreen mainScreen].b...
//遵守協(xié)議 @interface ViewController () @property(nonatomic,strong)UIButton ...
#import "ViewController.h" @interface ViewController () //畫面鏈接 @property...
//1.按鈕UIButton UIButton *button //表示定義了一個(gè)按鈕對象 button.frame=CGMake(x軸,y軸见妒,...
//整型變量 NSInteger a=10//表示定義了一個(gè)值為10的整型變量 //NSLog是oc中的打印函數(shù) NSLog(@"a=%ld",...