1、常用属性
self.view;
self.navigationController;//自动赋值
self.navigationItem;//手动赋值
self.tabBarController;//自动赋值
self.tabBarItem;//手动赋值
1,可视化属性
UIView * v1;
UIView * v2;
v1.backgroundColor;
v1.subviews;
2,视图层次
[self.view addSubview:v1];
[self.view addSubview:v2];
[v1 removeFromSuperview];
self.view.subviews;
[self.view bringSubviewToFront:v1]; //将视图v1显示在前面
[self.view sendSubviewToBack:v1]; //将视图V1显示在后面
[self.view insertSubview:v2 atIndex:0]; //将v2插入在view的0的位置（最底层为0）
3，视图过度动画
UIScrollView * s = [[UIScrollView alloc]initWithFrame:self.view.bounds];
[self.view addSubview:s];
UIImageView * imageV = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"123.png"]];
s.contentSize = imageV.frame.size;
[s addSubview:imageV];
//偏移量
s.contentOffset;
UIWebView
UIWebView * w = [[UIWebView alloc]initWithFrame:self.view.bounds];
[self.view addSubview:w];
NSURL * url = [NSURL URLWithString:@"http://www.taobao.com"];
NSURLRequest * r = [NSURLRequest requestWithURL:url];
[w loadRequest:r];
//2,初始化方法
1.代码初始化
-(instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
//入，该视图控制器类和storyboard中某个可视化控制器绑定，该方法不会运行。
}
2.storyboard初始化
-(void)awakeFromNib
{
//通过纯代码创建一个视图控制器对象，该方法不会走。
}
3,加载根视图
-(void)loadView
{
//此方法，只做一件事
//为self.view属性赋值
}
视图切换时间点
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
-(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
-(void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
清除临时数据
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}