Question

我使用RadioGroup只实现了一个项目，可以从动态创建的radiobuttons中进行选择。

    final LinearLayout firstRowTxtLayout = new LinearLayout(fContext);
    firstRowTxtLayout.setLayoutParams(new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT));

    rbGroup.setLayoutParams(new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT));
    rbButton = new RadioButton(fContext);
    rbButton.setLayoutParams(new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT));
    rbButton.setId(rbTagincreament);
    rbGroup.addView(rbButton);

RadioGroup我已经在循环之外进行了初始化。并将RadioGroup视图添加到另一个布局

我再次改变它（如下所示）。现在我收到单选按钮，但我可以选择组中的每个按钮。

            private void createRadioButton(int num) {
    Log.i("comVisa", "Num ==" + num);

    rg = new RadioGroup(fContext); // create the RadioGroup
    rg.setOrientation(RadioGroup.HORIZONTAL);// or RadioGroup.VERTICAL

    rb = new RadioButton(fContext);
    rb.setId(num++);
    rg.addView(rb); // the RadioButtons are added to the radioGroup instead
    // of the layout
    firstRowTxtLayout.addView(rg);// you add the whole RadioGroup to the
    // layout
    rg.setOnCheckedChangeListener(new OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(RadioGroup group, int checkedId) {


        }
    });

}

当我开始rg = new RadioGroup(fContext);外面的时候，我得到了：

`IllegalStateException`. You must call removeView() on the child's parent first while using RadioGroup

带有代码行的Logcat：

03-12 14:05:35.266: W/System.err(32734):    at com.vipera.ts.gui.custom.comVisaApprovalList.createRadioButton(comVisaApprovalList.java:531) firstRowTxtLayout.addView(rg);
03-12 14:05:35.266: W/System.err(32734):    at com.vipera.ts.gui.custom.comVisaApprovalList.constructRow(comVisaApprovalList.java:459)createRadioButton(rbTagincreament++);
03-12 14:05:35.271: W/System.err(32734):    at com.vipera.ts.gui.custom.comVisaApprovalList.createTableLayout(comVisaApprovalList.java:411)
03-12 14:05:35.271: W/System.err(32734):    at com.vipera.ts.gui.custom.comVisaApprovalList.init(comVisaApprovalList.java:121)

Answer 1

rbButton目前处于另一种观点，这就是例外的原因。您必须致电 parent_of_rbButton.removeView(rbButton)才能将其添加到rbGroup。

获取java.lang.IllegalStateException：在使用RadioGroup时，必须首先在子级父级上调用removeView（）

1 个答案: