1.3 单选按钮RadioButton 单选按钮要在一组按钮中选择其中一项,并且不能多选,这要求有个容器确定这组按钮的范围,这个容器便是单选组RadioGroup,单选组RadioGroup实质上是一个布局,同一组的RadioButton都要放在同一个RadioGroup节点之下,RadioGroup拥有orientation属性,可指定下级控件的排列方向,该属性为horizontal时,单选按...
1. 使用按钮控件 Android常用按钮有Button、CheckBox、RadioButton 1.1 Button使用 Button设置监听三种方式 方式一 匿名函数 btn_click_anonymos.setOnClickListener { v -> //Kotlin对变量进行类型转换关键字as toast("ᅩڋԧഴկғ${(v as Button).text}") } 1. 2. 3. 4. 方式二 内部类 ...
RadioGroup.OnCheckChangListener,然后调用RadioGroup对象的setOnCheckedChangListener方法来注册该监听器。具体如下: rgRadioGroup.setOnCheckedChangeListener { group, checkedId -> when(checkedId){ .rbRadioButton01->logging("${rbRadioButton01.text}说:老婆,我爱你") .rbRadioButton02->logging("${rbRadio...
我在RadioGroup中有两个RadioButton。我想在这些RadioButton上设置OnClickListener。根据单击的RadioButton,我想更改EditText的文本。我如何才能做到这一点? 浏览5提问于2011-11-30得票数127 回答已采纳 2回答 如何在Android中将手势检测器添加到视图 、、
Kotlin Android Button – OnClickListener Android Toast Toasts are helpful in showing some information about the operation the user has done or so for a moment and disappear. There are two timing options Toast provides : SHORT and LONG. It does not obstruct the current activity and wraps around...
openclassButton 如果继承Button,且子类没有提供任何的构造方法,必须显示调用父类的构造方法,即使没有参数 classRadioButton:Button() 区别:接口没有构造函数,实现接口不需加括号 初始化父类的方式 openclassView{constructor(ctx:Context){...}constructor(ctx:Context,attr:AttributeSet){..}}classButton:View{constru...
BUTTON_POSITIVE).setOnClickListener { val updateFileOnEdit = view.open_file_type.checkedRadioButtonId == view.open_file_update_file.id val updateFileOnEdit = binding.openFileType.checkedRadioButtonId == binding.openFileUpdateFile.id val storePath = if (updateFileOnEdit) path else "" val ...
Some Base Widget in Android App Android应用中一些常用的控件 控件的几个基本属性 id 控件ID layout_width 宽度: wrap_content或者match_parent layout_hei...
RadioButtonItem( "Light", mnemonic='L', icon=ColorCircle(Color.LightGray), selected=theme==Theme.Light, onClick={theme=Theme.Light} ) RadioButtonItem( "Dark", mnemonic='D', icon=ColorCircle(Color.DarkGray), selected=theme==Theme.Dark, ...
Toggle button style checkbox:BSCheckbox( label = "Python", toggleButton = true, onClick = {} )RadioButtonBasic RadioButtonGroup usage:BSRadioButtonGroup { BSRadioButton(label = "Android", onClick = {}) BSRadioButton(label = "iOS", onClick = {}) BSRadioButton(label = "Web", onClick...