IOS 学习笔记之UI

自定义控件，实现部分

 - (id)initWithFrame:(CGRect)frame descriptionText:(NSArray *)inText/*需要输入两个字符串*/
 {
     self = [super init];//通过父类调用init初始化方法，产生一个对象，此处的self就是类的对象
     //判断是否初始化成功，未初始化之前，self = nil
     if (self)
     {
         UILabel *myLable = [[UILabel alloc] initWithFrame:CGRectMake(frame.origin.x, frame.origin.y, frame.size.width/, frame.size.height)];
         myLable.text = inText[];
         myLable.textColor = [UIColor blueColor];//字体颜色
         [self addSubview:myLable];
         UITextField *myText = [[UITextField alloc] initWithFrame:CGRectMake(frame.size.width/, frame.origin.y, frame.size.width/*, frame.size.height)];
         myText.placeholder = inText[];
         myText.borderStyle = UITextBorderStyleRoundedRect;//边框样式(圆角)
         [self addSubview:myText];
     }
      return self;//self包括(super init、addSubview:myLablea、ddSubview:myText)
 }

调用部分

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     // Override point for customization after application launch.
     //设置window(注意:该处必须设置)
     self.window = [[UIWindow alloc] init];
     self.window.frame = [[UIScreen mainScreen] bounds];//指定window大小跟屏幕大下一致
     self.window.backgroundColor = [UIColor grayColor];//UIWindow中的方法,背景颜色

     MyUIView *myUIViewInstance1 = [[MyUIView alloc] initWithFrame:CGRectMake(, , , )  descriptionText:@[@"用户名:",@"请输入手机号或邮箱"]];
     MyUIView *myUIViewInstance2 = [[MyUIView alloc] initWithFrame:CGRectMake(, , , )  descriptionText:@[@"密码:",@"必须同时包含字符和数字"]];
     [self.window addSubview:myUIViewInstance1];
     [self.window addSubview:myUIViewInstance2];

     [self.window makeKeyAndVisible];//显示(使其可见)
     return YES;
 }

基础部分

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     // Override point for customization after application launch.
     //程序入口
     //设置window
     self.window = [[UIWindow alloc] init];
  //   self.window.frame = CGRectMake(0, 0, 100, 100);//指定窗口位置和大小
     self.window.frame = [[UIScreen mainScreen] bounds];//指定window大小跟屏幕大下一致
     self.window.backgroundColor = [UIColor grayColor];//UIWindow中的方法,背景颜色
    //设置view
     //创建view1
     UIView *view1 = [[UIView alloc] init];
 //    UIView *view1 = [[UIView alloc] initWithCoder:(NSCoder *)];
 //    UIView *view1 = [[UIView alloc] initWithFrame:(CGRect)];
     view1.frame = CGRectMake(, , , );//设置位置大小
     view1.backgroundColor = [UIColor orangeColor];//背景颜色
     //将view1加入window
 //    [self.window addSubview:view1];

     NSLog(@"---%@",self.window.subviews);
     //集合会自动对它的元素做retain操作
     /*
      hidden:隐藏
      alpha:透明度
      supwiew:父视图
      tag:标记,便于索引(比如view的索引)
      eg:
      view1.tag = 10;
      UIView *v = [self.window viewWithTag:10];//索引view1
      */

     //UIlable
     UILabel *myLable = [[UILabel alloc] initWithFrame:CGRectMake(, , , )];
     myLable.backgroundColor = [UIColor whiteColor];
     [self.window addSubview:myLable];

     //UItext
     UITextField *myText = [[UITextField alloc] initWithFrame:CGRectMake(, , , )];
     myText.borderStyle = UITextBorderStyleRoundedRect;//边框样式(圆角)
     myText.placeholder = @"手机号/邮箱";//占位符
 //    [view1 addSubview:myText];
     [self.window addSubview:myText];

     //UIButton+点击事件
 //    UIButton *myButton = [[UIButton alloc] initWithFrame:CGRectMake(120, 150, 80, 30)];
     UIButton *myButton = [UIButton buttonWithType:UIButtonTypeSystem];//标准系统按钮，圆角形
     myButton.frame = CGRectMake(, , , );
     myButton.backgroundColor = [UIColor orangeColor];//橙黄色
     [myButton setTitle:@"登陆" forState:UIControlStateNormal];//设置标题和状态(正常)
     [myButton addTarget:self/*对象*/ action:@selector(prin/*处理程序*/) forControlEvents:UIControlEventTouchUpInside/*事件*/];//松手检测
     [self.window addSubview:myButton];

     //UIAlertView
 //    UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请妥善保管你的密码" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
 //    [myAlert show];

     [self.window makeKeyAndVisible];//显示(使其可见)
     return YES;
 }

 - (void)prin
 {
  //   NSLog(@"登陆成功");
     UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"请妥善保管你的密码" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
     [myAlert show];//显示
 }