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/3, frame.size.height)];
        myLable.text = inText[0];
        myLable.textColor = [UIColor blueColor];//字体颜色
        [self addSubview:myLable];
        UITextField *myText = [[UITextField alloc] initWithFrame:CGRectMake(frame.size.width/3, frame.origin.y, frame.size.width/3*2, frame.size.height)];
        myText.placeholder = inText[1];
        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(30, 100, 350, 30)  descriptionText:@[@"用户名:",@"请输入手机号或邮箱"]];
    MyUIView *myUIViewInstance2 = [[MyUIView alloc] initWithFrame:CGRectMake(30, 150, 350, 30)  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(80, 80, 200, 200);//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(80, 20, 200, 30)];
    myLable.backgroundColor = [UIColor whiteColor];
    [self.window addSubview:myLable];
    
    //UItext
    UITextField *myText = [[UITextField alloc] initWithFrame:CGRectMake(120, 100, 190, 30)];
    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(120, 150, 80, 30);
    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
}