#import "ViewController.h"
@interface ViewController ()
//类变量的声明
@end
// 类属性声明
// 类方法和声明
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
在这里两种方法实现UIViewController类的基类中定义
初始视图加载后调用viewDidLoad中的安装程序
在内存警告的情况下调用didReceviveMemoryWarning
