分析项目心得

1.检查版本更新以及自动登录

（1）.宏定义

（2）#define kBundle [NSBundle mainBundle].bundleIdentifier

.检查版本更新

在AppDelegate里面

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

 [self checkGuide];

}

（3）检查更新方法 

//登录界面和首页的切换

- (void)checkGuide

{

    //版本号 新特性界面 是否应该加载

    //1.获取你app的版本号

    NSString *locaVerson = [NSBundle mainBundle].infoDictionary[@"CFBundleVersion"];

    //2.获取 你保存在沙盒中的版本号    

    NSUserDefaults *defauts = [NSUserDefaults standardUserDefaults];

    NSString *saveVersion = [defauts objectForKey:@"saveVerion"];

    //3.判断

    if([saveVersion isEqualToString:locaVerson]){//两者一致

      获取密码

       NSUserDefaults *defauts = [NSUserDefaults standardUserDefaults];

       NSString *passWord = [defauts objectForKey:@"saveVerion"];

        if([defauts objectForKey:kUID] && [defauts objectForKey:kTOKEN]){

        //自动登录

            

            UUTabBarController * mainVc = [[UUTabBarController alloc]init];

            

            self.window.rootViewController = mainVc;

            

            

        }else{

        

//        跳到登录界面

            //加载登录界面

            UUPhoNumLoginViewController * loginView=[[UUPhoNumLoginViewController alloc]init];

            

            UULoginNavController *mainVc=[[UULoginNavController alloc]initWithRootViewController:loginView];

            

            

            self.window.rootViewController = mainVc;

        

        }

    

      

        

    }else{

        

#warning  把最新的版本号保存下来  ****新版本需要走引导页****

        

        [defauts setObject:locaVerson forKey:@"saveVerion"];

        

        [defauts synchronize];

        //加载登录界面

        UUPhoNumLoginViewController * loginView=[[UUPhoNumLoginViewController alloc]init];

        

        UULoginNavController *mainVc=[[UULoginNavController alloc]initWithRootViewController:loginView];

        

        self.window.rootViewController = mainVc;

    }

    

}

2.textField点击别处退出键盘

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

 [self.view endEditing:YES];

}

3.出来键盘，控制当前视图往上面移动的距离

 [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(changeKeyBoard:) name:UIKeyboardWillShowNotification object:nil];

 [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(changeKeyBoard:) name:UIKeyboardWillHideNotification object:nil];

#pragma mark --相应键盘的通知事件

- (void)changeKeyBoard:(NSNotification *)notification{

    if(self.passWordField){

    NSLog(@"%@",notification);

    //获取userInfo信息

    NSDictionary *userInfo = notification.userInfo;   

    //获取要移动控件的transForm

    CGAffineTransform transForm = self.view.transform;  

    //获取移动的位置 屏幕的高度 - 最终显示的frame的Y = 移动的位置

    //1. 获取键盘最终显示的y

    NSValue *value = userInfo[UIKeyboardFrameEndUserInfoKey];

    CGRect endFrame = [value CGRectValue];    

    CGFloat moveY = - (self.view.frame.size.height - endFrame.origin.y);   

    //移动具体移动多少，这里决定

    transForm = CGAffineTransformMakeTranslation(0, 移动的距离);

    //执行动画移动

    [UIView animateWithDuration:[userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue] animations:^{       

        self.view.transform = transForm;

    }];

    }

}

 4.控制进入一个控制器的导航栏视图的显示与隐藏

-(void)viewWillAppear:(BOOL)animated{

    [super viewWillAppear:animated];

 self.navigationController.navigationBarHidden = YES;

}

-(void)viewWillDisappear:(BOOL)animated{

    [super viewWillDisappear:animated];

    self.navigationController.navigationBarHidden = NO;

}

5.在textField的里面的字体更改时就对自己的是有属性赋值

[self.phoneNumField addTarget:self action:@selector(textChange) forControlEvents:UIControlEventEditingChanged];

 [self.passWordField addTarget:self action:@selector(textChange) forControlEvents:UIControlEventEditingChanged];

-(void)textChange{

    self.userName=self.phoneNumField.text;

    self.passWord=self.passWordField.text;

}

6.获取验证码textField的编写

 UITextField * phoneNumField=[[UITextField alloc]init];

 self.phoneNumField= phoneNumField;

 self.phoneNumField.borderStyle= UITextBorderStyleRoundedRect;

 self.phoneNumField.clearButtonMode = UITextFieldViewModeAlways;  

    UILabel * phoneNumLable = [[UILabel alloc]init];

    UIFont *iconfont = [UIFont fontWithName:@"IconFont" size: 18];

    phoneNumLable.font = iconfont;

    phoneNumLable.text = @"U0000e602"; 

    UIView *phoneNumview=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 30, 50)];

    self.phoneNumField.leftView=phoneNumview;

    self.phoneNumview = phoneNumview ;

    phoneNumLable.frame = CGRectMake(10, 0, 30, 50);

    [self.phoneNumview addSubview:phoneNumLable];   

    self.phoneNumField.leftViewMode = UITextFieldViewModeAlways;

UITextField * passWordField=[[UITextField alloc]init];

    self.passWordField= passWordField;

    self.passWordField.placeholder=@"验证码";

   UIButton * verCodeBtn = [[UIButton alloc]init];

    self.passWordField.rightView = verCodeBtn;

    self.passWordField.rightViewMode = UITextFieldViewModeAlways;

注解：iconfont图标示例

这样，我们就可以很方便的使用iconfont图标了。这里要注意的是，图标是用的iconfont中的图标用的是unicode编码，我们在自己的工程中时需要将&#xXXXX格式转换成UXXXXXXXX格式。

-(void)loadView{
    [super loadView];
//    imageView
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 50, 30, 30)];
    [self.view addSubview:imageView];
//图标编码是&#xe603，需要转成U0000e603
    imageView.image = [UIImage iconWithInfo:TBCityIconInfoMake(@"U0000e603", 30, [UIColor redColor])];
//    button
    UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
    button.frame = CGRectMake(100, 100, 40, 40);
    [self.view addSubview:button];
    [button setImage:[UIImage iconWithInfo:TBCityIconInfoMake(@"U0000e60c", 40, [UIColor redColor])] forState:UIControlStateNormal];
//    label,label可以将文字与图标结合一起，直接用label的text属性将图标显示出来
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(50, 160, 280, 40)];
    [self.view addSubview:label];
    label.font = [UIFont fontWithName:@"iconfont" size:15];//设置label的字体
    label.text = @"这是用label显示的iconfont  U0000e60c";
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    self.navigationController.navigationBar.translucent = NO;

    UIBarButtonItem *leftBarButton = [[UIBarButtonItem alloc] initWithImage:[ UIImage iconWithInfo:TBCityIconInfoMake(@"U0000e602",22,[UIColor colorWithRed:0.55 green:0.55 blue:0.55 alpha:1])] style:UIBarButtonItemStylePlain target:self action:@selector(leftButtonAction)];
    self.navigationItem.leftBarButtonItem = leftBarButton;


    self.navigationItem.leftBarButtonItem.tintColor = [UIColor colorWithRed:0.55 green:0.55 blue:0.55 alpha:1];
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage iconWithInfo:TBCityIconInfoMake(@"U0000e60d",25, [UIColor colorWithRed:0.14 green:0.61 blue:0.83 alpha:1.00])] style:UIBarButtonItemStylePlain target:self action:@selector(rightButtonAction)];
     self.navigationItem.rightBarButtonItem.tintColor = [UIColor colorWithRed:0.14 green:0.61 blue:0.83 alpha:1.00];

    // Do any additional setup after loading the view, typically from a nib.
}

 

6.获取系统的相关信息

 //获取你app的版本号

    NSString *locaVerson = [NSBundle mainBundle].infoDictionary[@"CFBundleVersion"];

 //    手机系统版本

    NSString * iponeM = [[UIDevice currentDevice] systemName];

7.获取手机的型号

/** 设备类型 */

#define kDevice_iPhone4 (kScreenHeight <= 480.0)   //包括iPhone4 , iPhone4s

#define kDevice_iPhone5 ((kScreenHeight > 480.0) && (kScreenHeight <= 568.0))   //包括iPhone5,iPhone5s

#define kDevice_iPhone6 ((kScreenHeight > 568.0) && (kScreenHeight <= 667.0))   //iPhone6

#define kDevice_iPhone6Plus ((kScreenHeight > 667.0) && (kScreenHeight <= 736.0))   //iPhone6Plus

8.跳转登录可以直接通过

[UIApplication sharedApplication].keyWindow.rootViewController = mainVc进行设置

 9.自定义的相应是控件可以继承自UIControl

10.使用蒲公英可以快速获取设备的UUID

11.UIView类的autoresizingMask

在 UIView 中有一个autoresizingMask的属性，它对应的是一个枚举的值（如下），属性的意思就是自动调整子控件与父控件中间的位置，宽高。

enum {

   UIViewAutoresizingNone                 = 0,

   UIViewAutoresizingFlexibleLeftMargin   = 1 << 0,

   UIViewAutoresizingFlexibleWidth        = 1 << 1,

   UIViewAutoresizingFlexibleRightMargin  = 1 << 2,

   UIViewAutoresizingFlexibleTopMargin    = 1 << 3,

   UIViewAutoresizingFlexibleHeight       = 1 << 4,

   UIViewAutoresizingFlexibleBottomMargin = 1 << 5

};

UIViewAutoresizingNone就是不自动调整。

UIViewAutoresizingFlexibleLeftMargin 自动调整与superView左边的距离，保证与superView右边的距离不变。

UIViewAutoresizingFlexibleRightMargin 自动调整与superView的右边距离，保证与superView左边的距离不变。

UIViewAutoresizingFlexibleTopMargin 自动调整与superView顶部的距离，保证与superView底部的距离不变。

UIViewAutoresizingFlexibleBottomMargin 自动调整与superView底部的距离，也就是说，与superView顶部的距离不变。

UIViewAutoresizingFlexibleWidth 自动调整自己的宽度，保证与superView左边和右边的距离不变。

UIViewAutoresizingFlexibleHeight 自动调整自己的高度，保证与superView顶部和底部的距离不变。

12.使用JSON进行JSON支持

地址：http://stig.github.com/json-framework/

JSON框架。包括一个解析器将JSON字符串解析成对象；以及一个生成器从对象生成字符串。

// JSON string -> NSDictionary    

NSString *jsonString = @"{"foo": "bar"}";     

NSDictionary *dictionary = [jsonString JSONValue];    

NSLog(@"Dictionary value for "foo" is "%@"", [dictionary objectForKey:@"foo"]);     

// NSDictionary -> JSON string     

NSString *newJsonString = [dictionary JSONRepresentation]; 

13.快速定义的小技巧。其最新的Swift里面已经集成了

#define Color(a) [UIColor colorForHex:a]

#define IMAGE(a) [UIImage imageNamed:a]

14.项目里面尽量多使用懒加载的形式：数组，自定义view 控件的创建

例如：懒加载的代码写到一起，还可以增加了可读性

//导航栏左按钮

- (UIBarButtonItem *)leftItem{

    if (!_leftItem) {

        _leftItem = [[UIBarButtonItem alloc]initWithImage:IMAGE(@"back") style:UIBarButtonItemStylePlain target:self action:@selector(backMethod)];

        [_leftItem setTintColor:WHITECOLOR];

    }

    return _leftItem;

}

- (UIBarButtonItem *)rightItem{

    if (!_rightItem) {

        _rightItem = [[UIBarButtonItem alloc]initWithTitle:@"注册" style:UIBarButtonItemStyleDone target:self action:@selector(registerMethod)];

        [_rightItem setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:14]} forState:UIControlStateNormal];

        [_rightItem setTintColor:WHITECOLOR];

    }

    return _rightItem;

}

15.创建圆角的button

[UIButton buttonWithType:UIButtonTypeRoundedRect];

16.创建一个随机的颜色,一般使用来进行测试

#define RandomColor [UIColor colorWithRed:arc4random_uniform(255)/255.0 green:arc4random_uniform(255)/255.0 blue:arc4random_uniform(255)/255.0 alpha:1]

 17.使用类似闭包的形式添加控件，更加的简洁：

闭包式

 UIView *backView = [[UIView alloc]initWithFrame:(CGRect){0,0,K_ZY_SCREEM_WIDTH,64}];

     [self.view addSubview:(

      backView.backgroundColor = [UIColor lightGrayColor],

      backView

      )];

    //  返回按钮

    UIButton *backBtn = [UIButton buttonWithType:UIButtonTypeCustom];

    

   

     

    [backView addSubview:(

        backBtn.frame = (CGRect){0,20,40,40},

        [backBtn setImage:[UIImage imageNamed:@"返回Btn"] forState:UIControlStateNormal],，

        [backBtn addTarget:self action:@selector(OnTapBackBtn:) forControlEvents:UIControlEventTouchUpInside],

        backBtn

     )];

18.使用枚举的形式创建一个通用的类，可以使用定义局部变量的形式，局部变量的类型是bool，通过判断枚举的属性type的值，对当前的类进行不同的设置，以达到一个类不同显示的实现

BOOL disableBarScroll = _type == STControllerTypeDisableBarScroll;

BOOL hiddenNavigationBar = _type == STControllerTypeHiddenNavBar;

根据局部属性进行不同的设置即可

19.

//去掉过期警告

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Wdeprecated-declarations"

// 这部分使用到的过期api

#pragma clang diagnostic pop

20.使用weak进行引用的特点

weak reference"的property，他的特色就是虽然会持有对方的reference，但是不会增加retain count