UIButton, UILabel, UITextField

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];    // Override point for customization after application launch.    self.window.backgroundColor = [UIColor brownColor];    [self.window makeKeyAndVisible];    /*    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];    view.backgroundColor = [UIColor whiteColor];    view.hidden = NO;    view.alpha = 1;    view.clipsToBounds = NO;//    view.superview//    view.subviews    view.frame = CGRectMake(100, 200, 300, 400);    view.center = CGPointMake(100, 100);    view.bounds = CGRectMake(0, 0, 300, 400);    view.layer.cornerRadius = 50;    [self.window addSubview:view];    */    //UILabel, 标签视图, 用于显示文字, 继承于UIView    label = [[UILabel alloc] initWithFrame:CGRectMake(20, 100, 335, 40)];//对称    label.backgroundColor = [UIColor whiteColor];    //设置文本    label.text = @"joner , goog moring, you are good!"; //cmd + ctrl + 空格(添加表情)    //设置对齐方式, 默认是左对齐    label.textAlignment = NSTextAlignmentCenter;    //文本颜色, 默认为黑色    label.textColor = [UIColor redColor];    //行数,默认为1, 首先要改标签视图高度; 0,代表自动匹配    label.numberOfLines = 0;    //字体(样式和大小), 默认为17    UIFont *font1 = [UIFont systemFontOfSize:20];    //加粗(注:后面的数值是字体大小)    UIFont *font2 = [UIFont boldSystemFontOfSize:40];    //斜体    UIFont *font3 = [UIFont italicSystemFontOfSize:30];    UIFont *font4 = [UIFont fontWithName:@"Heiti SC" size:30];    NSLog(@"%@", [UIFont familyNames]);    label.font = font3;    //文字的阴影    label.shadowColor = [UIColor colorWithRed:0 green:1 blue:0 alpha:0.2];    label.shadowColor = [UIColor blueColor];    //文字阴影偏移量, 默认(0, -1)    label.shadowOffset = CGSizeMake(0, -5);    //换行模式(英文用的居多)    label.lineBreakMode = NSLineBreakByCharWrapping ; //直接点击cmd ,进入查看    //同理    label.tag = 102;    [self.window addSubview:label];    [label release];//但在ARC, 编译器释放    //UITextField, 单行文本输入框, 继承于UIContrl    textField1 = [[UITextField alloc] initWithFrame:CGRectMake(20, 160, 335, 40)];//    textField.backgroundColor = [UIColor whiteColor];    //文本//    textField.text = @"辉哥真帅";    //占位符(提示)    textField1.placeholder = @"请输入口令";//不写内容就会出来    //文字颜色    textField1.textColor = [UIColor blueColor];    //字体    textField1.font = [UIFont systemFontOfSize:35];    //边框样式    textField1.borderStyle = UITextBorderStyleRoundedRect; //圆角样式: 默认为白色, 就算注释了文本框, 圆角样式: 他会自动生成    //对齐方式    textField1.textAlignment =NSTextAlignmentLeft;    //是否可用(无法写入)    textField1.enabled = YES;    //是否安全输入(密码, 变星号)    textField1.secureTextEntry = NO;    //换行键样式    textField1.returnKeyType = UIReturnKeySearch;    //代理    textField1.delegate = self;//确定关系    //弹出键盘的类型    textField1.keyboardType = UIKeyboardTypeNumberPad;    //设置一个标签值    textField1.tag = 101; //(要写到100以上, 100以下, 系统可能在用)    [self.window addSubview:textField1];    [textField1 release];    UIControl    //UIButton, 按钮类, 继承于UIControl    UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem]; //便利构造器(不需要释放); 渲染色系统自带为蓝色    button.frame = CGRectMake(20, 220, 335, 40);    button.backgroundColor = [UIColor greenColor];    //1 设置对应状态下的标题    [button setTitle:@"按住说话" forState:UIControlStateNormal];// 正常情况, 就用normal    [button setTitle:@"松开结束" forState:UIControlStateHighlighted];// 正常情况, 就用normal//    [button setTitle:@"好幸运, 被翻到了" forState:UIControlStateSelected];// 配合  button.selected = YES;//    [button setTitle:@"你是不是有别人了" forState:UIControlStateDisabled];// 配合 button.enabled = NO;    //是否选中//    button.selected = YES;    //是否可用//    button.enabled = NO;    //渲染色 tintColor    button.tintColor = [UIColor redColor];    //2 设置某个状态下的显示图片    //注意: 如果需要显示图片, 要去掉渲染色, 使用UIButtonTypeCustom    UIImage *image = [UIImage imageNamed:@"abc.png"]; //图片如果是png, 可以省略后缀, 其他类型, 必须加上后缀//    [button setImage:image forState:UIControlStateNormal];    //注: title 和 image 是在同一层的, 如果图片过大, 就会把标题挤走.(setImage)    //3 图片作为背景色    [ button setBackgroundImage:image forState:UIControlStateNormal];    //button是复合视图, button上有一个用于展示文字的titleLable, 可以修改相关属性//    button.titleLabel.textColor = [UIColor blueColor];    //4 设置执行状态下的标题颜色    [button setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];    //注: 修改button的title, titleColor, image, backgroundImage    //点击button, 触发某些方法    //1. 方法执行者    //2.方法名    //3.方法触发的时刻    [button addTarget:self action:@selector(pressButton) forControlEvents:UIControlEventTouchUpInside ];    //UIImageView, 用于显示图片, 继承于UIView    UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"1"]];    imageView.frame = CGRectMake(37.5, 280, 300, 300);    NSMutableArray *images = [NSMutableArray arrayWithCapacity:4];    for (NSInteger i = 1; i <= 4; i++) {        NSString *name = [NSString stringWithFormat:@"%ld", i];        UIImage *image = [UIImage imageNamed:name];        [images addObject:image];    }    //设置动画数组    imageView.animationImages = images;    //设置动画时间    imageView.animationDuration = 0.5;//    imageView.animationRepeatCount = 3;//(3轮就停止)    [self.window addSubview:imageView];    [imageView release];    //动起来    [imageView startAnimating];    //停止动画//    [imageView stopAnimating];    [self.window addSubview:button];    return YES;}- (void)pressButton {    NSLog(@"点击了按钮");    //1.扩大作用域(写成实例变量)    //注:    NSLog(@"%@", textField1.text); //打印到后台; text 表示文本    label.text = textField1.text;    //2. 通过tag值(多个相同视图)    //做强制转换    UITextField *tf = (UITextField *)[self.window viewWithTag:101];    NSLog(@"%@", tf.text);    UILabel *la = (UILabel *)[self.window viewWithTag:102];    NSLog(@"%@", la.text);    la.text = tf.text;}