由网友(在那以后.)分享简介：我有一个单选组，其中有两个单选按钮.我想获取单选按钮的值，然后将其存储在数据库中..我该怎么做?请帮忙！我搜索了它，但一切都是徒劳的！我尝试了这段代码，但我的活动在使用后停止工作i have a radio group with two radio buttons in it. I want to get the v...

我有一个单选组，其中有两个单选按钮.我想获取单选按钮的值，然后将其存储在数据库中..我该怎么做?请帮忙！我搜索了它，但一切都是徒劳的！我尝试了这段代码，但我的活动在使用后停止工作

i have a radio group with two radio buttons in it. I want to get the value of the radio button and then store it in the database..how do i do that?? Pls help! I searched for it but all in vain! I tried this code but my activity stops working after using it

rg=(RadioGroup)findViewById(R.id.radioGroup2);
if(rg.getCheckedRadioButtonId()!=-1)
    {
        int id=rg.getCheckedRadioButtonId();
        View radioButton=rg.findViewById(id);
        int radioid=rg.indexOfChild(radioButton);
        RadioButton btn = (RadioButton) rg.getChildAt(radioid);
        Father_spouse=(String)btn.getText();
    }

推荐答案

如果您想存储 RadioButton 的文本标签，请使用:

if you want to store the text label of your RadioButton then use this :

// get selected radio button from radioGroup
int selectedId = radioGroup.getCheckedRadioButtonId();

if(selectedId != -1) {    
   // find the radiobutton by returned id
   selectedRadioButton = (RadioButton) findViewById(selectedId);

   // do what you want with radioButtonText (save it to database in your case)
   String radioButtonText = selectedRadioButton.getText();
}

如果您想保存布尔值，请测试 RadioButtons 的 selectedId 并将 0 或 1 保存到数据库列(启用/禁用更新的两个单选按钮示例):

if you want to save a boolean value so test on the selectedId of your RadioButtons and save a 0 or 1 to your database column (Example of two radio buttons to enable/disable updates) :

// get selected radio button from radioGroup
int selectedId = radioGroup.getCheckedRadioButtonId();
boolean isAllowUpdate = false;
switch(selectedId) {
    case R.id.radioAllowUpdate : isAllowUpdate = true; break;
    case R.id.radioDisableUpdate : isAllowUpdate = false; break;
}

//save it to database 
if(isAllowUpdate)
   // true ==> save 1 value
else 
   // false ==> save 0 value

如果您应该控制所选值并将其发送到数据库，请参阅此 教程

if you should control the selected value and when send it to database, see this tutorial