UI基础整理-2

第二节:UI_基础视图程序启动流程

创建文本框并给定大小

UITextField*textField = [[UITextFieldalloc]initWithFrame:CGRectMake(0,0,200,100)];

调整位置

textField.center=CGPointMake(KScreenWidth/2,KScreenHeight/ 2);

textField.backgroundColor= [UIColorwhiteColor];
    //默认显示文本
    textField.text=@"秋裤";
    //可替换提示文本(占位符)
//    textField.placeholder = @"请输入军哥的三围....";
    //边框样式:枚举值
    textField.borderStyle=UITextBorderStyleRoundedRect;//自带圆角
    //textField.borderStyle = UITextBorderStyleBezel;//四边形方框(三遍家加重)
    //textField.borderStyle = UITextBorderStyleLine;//下划线加重
    //是否允许用户输入
    textField.enabled=YES;
    //字体
    textField.font= [UIFontfontWithName:@"Helvetica- Bold"size:20];
    //是否在开始编辑的时候清空输入框内容
    textField.clearsOnBeginEditing=YES;
    //是否以原点方式显示内容
//    textField.secureTextEntry = YES;
    //弹出键盘类型
    textField.keyboardType=UIKeyboardTypeWebSearch;
   
    //键盘return键类型
    textField.returnKeyType=UIReturnKeyGoogle;
    //清除按钮模式(枚举值)
    textField.clearButtonMode=UITextFieldViewModeAlways;//总是显示清除按钮
    //输入框左视图
    UIView *view = [[UIViewalloc]initWithFrame:CGRectMake(0,0,30,30)];
    view.backgroundColor= [UIColorredColor];
    [textField addSubview:view];
    textField.leftView= view;
    //左视图的显示模式

    textField.leftViewMode=UITextFieldViewModeAlways;//总是显示左视图

    //使用便利构造器来创建按钮对象
    UIButton *button = [UIButtonbuttonWithType:UIButtonTypeCustom];//子类有自己的便利构造器,就是用自己的  UIButtonTypeCustom和UIButtonTypeSystem是我们常用的两种
//    button.tag = 111;
    //设定大小
    button.frame=CGRectMake(0,0,100,100);
    //设定位置
    button.center=CGPointMake(KScreenWidth/2,KScreenHeight/ 2);
    //设定背景颜色
    button.backgroundColor= [UIColorbrownColor];
   
    //设置标题
    [button setTitle:@"点我呀!"forState:UIControlStateNormal];
//    [button setTitle:@"松开!" forState:UIControlStateHighlighted];
    //设置标题颜色

    [button setTitleColor:[UIColorredColor]forState:UIControlStateNormal];//     UIControlStateNormal:普通状态

    [buttonsetTitleColor:[UIColorgreenColor]forState:UIControlStateHighlighted];//  UIControlStateHighlighted:高亮状态

   //设置标题大小
    button.titleLabel.font= [UIFontsystemFontOfSize:25];
   

   
    //事件

    [button addTarget:selfaction:@selector(printWords:)forControlEvents:UIControlEventTouchUpInside];

//UIControlEventTouchDown:一碰就触发    UIControlEventTouchUpInside:按住跳起时触发

   
   
    //设置图片
////    [button setImage:[UIImage imageNamed:@"a.png"] forState:UIControlStateNormal];
//    [button setBackgroundImage:[UIImage imageNamed:@"a"] forState:UIControlStateNormal];
//    [button setImage:[UIImage imageNamed:@"b.jpg"] forState:UIControlStateHighlighted];//点击变图片
   
    //添加视图
     [backView addSubview:button];