又到了總結的時間了,突然間感覺時間過得好快啊, 總覺的時間不夠用,但是這也沒辦法啊, 只有自己擠時間了,雖然是零基礎,但是這並不能代表什麼啦,只要努力,收獲總還是有的, 同時我也相信廣大的博友肯定也有同樣的感觸吧!   　　接下來就讓我來為大家解讀我們今天所學習的內容吧,嘿嘿. 首先在上課剛開始時間,我們做了短短的練習, 對以往的知識有了進一步的了解, 也提高了熟練度, 但是時間總是很快的, 馬上我們就迎來了我們今天學習的新內容UINavigationControl!   　　首先讓我來介紹下UINavigationControl的創建方法吧:   　　1.創建導航控制器, 並指定導航控制器的RootViewController   　　2.設置導航控制器為rootViewController   具體創建過程我就用代碼來告訴大家吧,如下:     FirstViewController *firstVC = [[FirstViewController alloc] init];     NSLog(@"第一個頁面初始化完成");     UINavigationController *navC = [[UINavigationController alloc] initWithRootViewController:firstVC];     [firstVC release];     NSLog(@"設置第一個頁面為導航控制器的rootViewController");     //步驟2.設置導航控制器為window的rootViewController     self.window.rootViewController = navC;       NSLog(@"設置導航控制器為window的RootViewController");     [navC release];   UINavigationControl,當行控制器, 繼承於UIViewController, 視圖控制器的視圖控制器, 用於管理伊利咧視圖控制器,被管理的視圖控制器以棧(先進後出, 後進先出)的形式儲存   每一個導航控制器都自帶一個navigationBar(導航條), UINavigationBar繼承於UIView, navigationBar是用於管理導航條的展現(iOS7之前是不透明的,之後就變為透明的啦)   同時我們也可以對導航條以及上面的東西進行設置, 具體方法如下:     //設置導航條是否半透明, 設置背景色,半透明失效     naviVC.navigationBar.translucent = YES;     //設置導航條上item的顏色     naviVC.navigationBar.tintColor = [UIColor purpleColor];          //設置導航條樣式     naviVC.navigationBar.barStyle = UIBarStyleBlack;   在之後我們便進入了本節課最為重要的了 那就是傳值問題, 在今天我們學習的方法中由屬性傳值和單例傳值.   單例傳值的創建方法為:   1.類方法   2.返回值類型是當前類   3.方法名:default + 類名   下面為大家帶上今天的例子:   下面圖示為1 2 3步     - (void)viewDidLoad {     [super viewDidLoad];     self.view.backgroundColor = [UIColor purpleColor];     // Do any additional setup after loading the view.     self.navigationItem.title = @"主頁";     UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20, 100, 60, 30)];     label.text = @"用戶名";     label.textAlignment = NSTextAlignmentRight;     [self.view addSubview:label];     [label release];          UILabel *label1 = [[UILabel alloc] initWithFrame:CGRectMake(20, 150, 60, 30)];     label1.text = @"性別";     label1.textAlignment = NSTextAlignmentRight;     [self.view addSubview:label1];     [label1 release];          field = [[UITextField alloc] initWithFrame:CGRectMake(100, 100, 200, 30)];     field.borderStyle = UITextBorderStyleRoundedRect;     field.placeholder = @"請輸入用戶名";     field.autocorrectionType = UITextAutocorrectionTypeNo;     field.spellCheckingType = UITextSpellCheckingTypeNo;     [self.view addSubview:field];     [field release];          field1 = [[UITextField alloc] initWithFrame:CGRectMake(100, 150, 200, 30)];     field1.borderStyle = UITextBorderStyleRoundedRect;     field1.placeholder = @"請輸入性別";     [self.view addSubview:field1];     [field1 release];          UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];     button.frame = CGRectMake(70, 200, 70, 30);     [button addTarget:self action:@selector(changPage:) forControlEvents:UIControlEventTouchUpInside];     [button setTitle:@"登陸" forState:UIControlStateNormal];     [self.view addSubview:button];          UIButton *button1 = [UIButton buttonWithType:UIButtonTypeSystem];     button1.frame = CGRectMake(180, 200, 70, 30);     [button1 addTarget:self action:@selector(changPage:) forControlEvents:UIControlEventTouchUpInside];     [button1 setTitle:@"取消" forState:UIControlStateNormal];     [self.view addSubview:button1];          UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(returnThekeyBorld:)];     [self.view addGestureRecognizer:tap];     [tap release];          //創建單例 //    Single *single = [Single defaultSingle]; //    NSLog(@"%@", single); //    Single *single1 = [Single defaultSingle]; //    NSLog(@"%@", single1); //    Single *single2 = [Single defaultSingle]; //    NSLog(@"%@", single2); }   - (void)returnThekeyBorld:(UITapGestureRecognizer *)tap {     for (UIView *view in self.view.subviews) {         if ([view class] == [UITextField class]) {             [view resignFirstResponder];         }     } }   - (void)didReceiveMemoryWarning {     [super didReceiveMemoryWarning];     // Dispose of any resources that can be recreated. }   - (void)changPage:(UIButton *)button {     Single *single = [Single defaultSingle];     single.nameString = field.text;     NSLog(@"%@", single.nameString);     HomeDetailViewController *detail = [[HomeDetailViewController alloc] init];     detail.nameString = [NSString stringWithFormat:@"歡迎%@ 性別%@登陸成功", field.text, field1.text];     [self.navigationController pushViewController:detail animated:YES];     [detail release];   }   - (void)viewDidLoad {     self.view.backgroundColor = [UIColor redColor];     [super viewDidLoad];     // Do any additional setup after loading the view.     self.navigationItem.title = @"詳情頁";          UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20, 0, 200, 100)];     label.numberOfLines = 0;     label.center = self.view.center; //    label.text = _nameString;     Single *single = [Single defaultSingle];     label.text = single.nameString;     label.textAlignment = NSTextAlignmentCenter;     [self.view addSubview:label];     [label release]; }   #import <Foundation/Foundation.h>   @interface Single : NSObject   @property (nonatomic, retain) NSString *nameString, *genderString;     //單例的創建方法 //1.類方法 //2.返回值類型是當前類 //3.方法名字:default + 類名 + (Single *)defaultSingle;   #import "Single.h"   @implementation Single   + (Single *)defaultSingle {     static Single *single = nil;     if (single == nil) {         single = [[Single alloc] init];     }     return single; }   - (void)dealloc {     self.nameString = nil;     self.genderString = nil;     [super dealloc]; }