IOS入门学习笔记（普通UI控件--UISwitch、UITextField、UITextView、UISegmentedControl）

UISwitch开关按钮

代码片段：

var uiswtich:UISwitch!;

uiswtich =UISwitch();
uiswtich.center =CGPointMake(100,50);
uiswtich.on =true;
uiswtich.addTarget(self, action:Selector("switchDidChange"),
forControlEvents:UIControlEvents.ValueChanged);
self.view.addSubview(uiswtich);

func switchDidChange()
{
println(uiswtich.on);//打印值为true或false
}

UITextField文本框

var textField =UITextField(frame:
CGRectMake(10,
160, 200,
30));

textField.borderStyle =UITextBorderStyle.RoundedRect;//文本框样式为圆角
textField.placeholder ="请输入";//提示信息

textField.textAlignment =NSTextAlignment.Center;//文字在文本框中问位置
textField.becomeFirstResponder();//自动打开键盘

textField.returnKeyType =UIReturnKeyType.Done;//键盘上的return按钮更换为Done

textField.clearButtonMode =UITextFieldViewMode.WhileEditing;//清楚文本框按钮
textField.backgroundColor =UIColor.blueColor();//文本框背景颜色
textField.delegate =self;//return按钮的触发事件
self.view.addSubview(textField);

return的触发事件需要重写textFieldShouldReturn，重写需要继承UITextFieldDelegate

func textFieldShouldReturn(textField:UITextField) ->
Bool {
textField.resignFirstResponder();//关闭键盘
println(textField.text);//打印文本框内的内容
return
true;
}

UITextView多文本框

var textView =UITextView(frame:
CGRectMake(50,
300, 200,
100));
textView.layer.borderWidth =1;//边框宽度

textView.layer.borderColor =UIColor.grayColor().CGColor;

textView.dataDetectorTypes =UIDataDetectorTypes.All;//电话，网址自动加跳转

textView.allowsEditingTextAttributes =true;//对文字进行加粗等操作

textView.editable =false;
self.view.addSubview(textView);

UISegmentedControl选择控件

var items = ["one","two","three"];
var segmented =
UISegmentedControl(items: items);
segmented.center =self.view.center;

// segmented.tintColor = UIColor.redColor();
segmented.selectedSegmentIndex =1;//默认选择
segmented.addTarget(self, action:"segmentedDIdChange:", forControlEvents:
UIControlEvents.ValueChanged);
self.view.addSubview(segmented);

func segmentedDIdChange(segmented:UISegmentedControl)
{
println(segmented.selectedSegmentIndex)//打印索引
println(segmented.titleForSegmentAtIndex(segmented.selectedSegmentIndex));//打印内容
}

这四个控件还有其他的属性，就不一一写出来了，基本上要用的时候找一下就可以