Question

我有3个电台组，我想检查每个电台组中是否选择了按钮。

例如我想要那样的东西

if (in each radio group one button is selected){
do something 
}

if ( one of RadioGroups have no selected button) {
Show something like Toast 
}

Answer 1

按名称阅读三组。然后迭代其他它。使用条件语句检查.checked。

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;       
    }
}

Answer 2

假设您有三个radioButtons，即一个两个和三个。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();




  }

Answer 3

使用getCheckedRadioButtonId()查找RadioButton中已选中的RadioGroup。

Answer 4

你写的每个RadioGroup：

if (radioGroup.getCheckedRadioButtonId() == -1)
{
  // no radio buttons are checked
}
else
{
  // one of the radio buttons is checked
}

您还可以在How to check if a radiobutton is checked in a radiogroup in Android?

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