Java 如何检查是否在每个收音机组中选择了按钮?
我有3个广播组,我想检查每个广播组中是否选择了按钮 例如,我想要这样的东西Java 如何检查是否在每个收音机组中选择了按钮?,java,android,android-studio,radio-button,android-radiogroup,Java,Android,Android Studio,Radio Button,Android Radiogroup,我有3个广播组,我想检查每个广播组中是否选择了按钮 例如,我想要这样的东西 if (in each radio group one button is selected){ do something } if ( one of RadioGroups have no selected button) { Show something like Toast } 按名字读三组。然后使用迭代器对其执行其他操作。检查。使用条件语句检查 var radios = document.getEleme
if (in each radio group one button is selected){
do something
}
if ( one of RadioGroups have no selected button) {
Show something like Toast
}
按名字读三组。然后使用迭代器对其执行其他操作。检查。使用条件语句检查
var radios = document.getElementsByTagName('input1');
var value;
for (var i = 0; i < radios.length; i++) {
if (radios[i].type === 'radio' && radios[i].checked) {
// get value, set checked flag or do whatever you need to
value = radios[i].value;
}
}
var radios=document.getElementsByTagName('input1');
var值;
对于(变量i=0;i
假设您有三个单选按钮,即一、二和三。你可以这样做
if(one.isChecked() || two.isChecked() || three.isChecked()){
//do something
}else if(!one.isChecked() || !two.isChecked() || !three.isChecked()){
//do something
Toast.makeText(TourClass.this, "Passwords do not match",
Toast.LENGTH_LONG).show();
}
使用
getCheckedRadioButtonId()
在RadioGroup
中查找选中的RadioButtonid按钮
,对于您编写的每个RadioGroup:
if (radioGroup.getCheckedRadioButtonId() == -1)
{
// no radio buttons are checked
}
else
{
// one of the radio buttons is checked
}
你也可以在这里查看答案