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//  RootViewController.m #import "RootViewController.h" #import "MyView.h"   @interfaceRootViewController ()   @property (nonatomic,retain)MyView *v;   @end   @implementationRootViewCont

//RootViewController.m            // UISrollView //UIScrollView是可以滚动的view，UIView本⾝不能滚动，子类UIScrollview拓展了滚动⽅面的功能。UIScrollView是所有滚动视图的基类。以后的UITableView，UITextView等视图都是继承于该类。使⽤场景：显⽰不下（单张大图）；内容太多（图⽂

//AppDelegate.m - (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindowalloc]initWithFrame:[[UIScreenmainScreen] bounds

// //  RootViewController.m #import "RootViewController.h" #import "SecondViewController.h"   @interfaceRootViewController() @property (nonatomic,strong)NSArray *arr; @property(nonatomic,st

// // RootViewController.m   #import "RootViewController.h"   @interfaceRootViewController()   @property (nonatomic,strong)UITableView*tableView;   @property (nonatomic,strong)NSMutableAr

// //  RootViewController.m   #import "RootViewController.h" #import "Student.h" #import "MyTableViewCell.h" #import "SecTableViewCell.h" #import "AjustFrame.h"   @interfaceRootViewController

// //  RootViewController.m   #import "RootViewController.h" #import "SecViewController.h"   @interfaceRootViewController ()   @property (nonatomic,strong)UILabel *lab; @end   @implemen

// //  AppDelegate.m                                                  #import "AppDelegate.h" #import "GameViewController.h" #import "VedioViewController.h" #import "PhotoViewController.h"

// //  ViewController.m     #define ImageUrl @"http://baike.soso.com/p/20090711/20090711101754-314944703.jpg"   //#define ImageUrl @"http://f.hiphotos.baidu.com/image/h%3D360/sign=9eae7c3766d9f2

//  ViewController.m   #import "ViewController.h"   @interfaceViewController ()   @end   @implementationViewController     // UITextField（输入框）：是控制文本输入和显示的控件。在App中UITextField出现频率也⽐比较高。iO