getCheckedRadioButtonId（）返回无用的诠释？ [英] getCheckedRadioButtonId() returning useless int?

问题描述

我有一个需要检测哪个单选按钮是当用户点击该按钮选择按钮的onClickListener。目前，你看到下面的onClickListener的Log.v没有返回的信息一个无用位：

这是点击提交三次不同的无线电每个选定的时间：

  

04-27 19：24：42.417：V /提交（1564）：1094168584

     

04-27 19：24：45.048：V /提交（1564）：1094167752

     

04-27 19：24：47.348：V /提交（1564）：1094211304

所以，我需要知道哪个单选按钮实际上是选择 - 有没有办法让单选按钮的对象呢？我希望能够得到它的编号从XML，以及它目前的案文。

下面是相关的code：

 公共无效buildQuestions（JSONObject的问题）抛出JSONException {

    RadioGroup中=（RadioGroup中）questionBox.findViewById（R.id.responseRadioGroup）;

    按钮chartsButton =（按钮）questionBox.findViewById（R.id.chartsButton）;
    chartsButton.setTag（问题）;
    按钮提交按钮=（按钮）questionBox.findViewById（R.id.submitButton）;

    chartsButton.setOnClickListener（chartsListener）;
    submitButton.setOnClickListener（submitListener）;

    TagObj tagObj =新TagObj（的问题，RadioGroup中）;
    submitButton.setTag（tagObj）;

}

公共OnClickListener submitListener =新OnClickListener（）{
    公共无效的onClick（视图v）{
        userFunctions =新UserFunctions（）;
        如果（userFunctions.isUserLoggedIn（活性））{
            TagObj tagObject =（TagObj）v.getTag（）;
            RadioGroup中RadioGroup中= tagObject.getRadioGroup（）;
            JSONObject的问题= tagObject.getQuestion（）;

            Log.v（提交，Integer.toString（radioGroup.getCheckedRadioButtonId（）））;
            SubmitTask submitTask =新SubmitTask（（轮询）活动的问题）;
            submitTask.execute（）;

        }
    }
};
 

解决方案

getCheckedRadioButtonId（）返回 ID 的在单选（或 1 如果没有单选按钮检查），它在 RadioGroup中检查。如果您在布局中设置不同的ID来的 RadioButons ，那么你将尝试匹配这些ID的方法的返回，看看哪一个被选中：

  //领域中的类
私有静态最终诠释RB1_ID = 1000; //第一个单选按钮ID
私有静态最终诠释RB2_ID = 1001; //第二个单选按钮ID
私有静态最终诠释RB3_ID = 1002; //第三个单选按钮的ID

//创建单选按钮
单选按钮RB1 =新的单选按钮（这一点）;
//设置ID
rb1.setId（RB1_ID）;


    INT BTN = radioGroup.getCheckedRadioButtonId（）;
    开关（BTN）{
    案例RB1_ID：
        //第一个单选按钮被选中。
    打破;
        //其他检查从RadioGroup中其他单选按钮IDS
    情况1：
        //没有单选按钮被选中在矿井RadioGroup中
    打破;
    }
 

I have a button's onClickListener that needs to detect which radiobutton was selected when the user clicks the button. Currently, the Log.v you see below in the onClickListener is not returning a useless bit of info:

This is clicking submit three times with a different radio selected each time:

04-27 19:24:42.417: V/submit(1564): 1094168584

04-27 19:24:45.048: V/submit(1564): 1094167752

04-27 19:24:47.348: V/submit(1564): 1094211304

So, I need to know which radioButton is actually selected - is there a way to get the object of the radiobutton? I want to be able to get it's id# from XML, as well as its current text.

Here's the relevant code:

public void buildQuestions(JSONObject question) throws JSONException {

    radioGroup = (RadioGroup) questionBox.findViewById(R.id.responseRadioGroup);

    Button chartsButton = (Button) questionBox.findViewById(R.id.chartsButton);
    chartsButton.setTag(question);
    Button submitButton = (Button) questionBox.findViewById(R.id.submitButton);

    chartsButton.setOnClickListener(chartsListener);
    submitButton.setOnClickListener(submitListener);

    TagObj tagObj = new TagObj(question, radioGroup);
    submitButton.setTag(tagObj);

}

public OnClickListener submitListener = new OnClickListener() {
    public void onClick(View v) {
        userFunctions = new UserFunctions();
        if (userFunctions.isUserLoggedIn(activity)) {
            TagObj tagObject = (TagObj) v.getTag();
            RadioGroup radioGroup = tagObject.getRadioGroup();
            JSONObject question = tagObject.getQuestion();

            Log.v("submit", Integer.toString(radioGroup.getCheckedRadioButtonId()));
            SubmitTask submitTask = new SubmitTask((Polling) activity, question);
            submitTask.execute();

        }
    }   
};

解决方案

getCheckedRadioButtonId() returns the id of the RadioButton(or -1 if no RadioButtons are checked) that is checked in the Radiogroup. If you set distinct ids to the RadioButons in the layout then you will try to match those ids with the return of the method to see which one is checked:

//field in the class
private static final int RB1_ID = 1000;//first radio button id
private static final int RB2_ID = 1001;//second radio button id
private static final int RB3_ID = 1002;//third radio button id

//create the RadioButton
RadioButton rb1 = new RadioButton(this);
//set an id
rb1.setId(RB1_ID);


    int btn = radioGroup.getCheckedRadioButtonId();
    switch (btn) {
    case RB1_ID:
        // the first RadioButton is checked.
    break;
        //other checks for the other RadioButtons ids from the RadioGroup
    case -1:
        // no RadioButton is checked inthe Radiogroup
    break;
    }

这篇关于getCheckedRadioButtonId（）返回无用的诠释？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！