Java 错误-无法将android.widget.FrameLayout强制转换为android.widget.LinearLayout

我试图添加一个单选按钮（android）到一个视图，但我得到了错误

我的代码-

 public void CreateRadio(HVArrangement layout, String text) {
        createRadioButton(layout.getView(), text);
    }

    private void createRadioButton(View view1, String text) {
        LinearLayout top = (LinearLayout) view1;
        final RadioButton[] rb = new RadioButton[1];
        RadioGroup rg = new RadioGroup(container.$context()); //create the RadioGroup
        rg.setOrientation(RadioGroup.HORIZONTAL);//or RadioGroup.VERTICAL
        rb[1] = new RadioButton(container.$context());
        rb[1].setText(text);
        rb[1].setId(1);
        rg.addView(rb[1]);
        top.addView(rg);//you add the whole RadioGroup to the layout
    }

但我得到的错误是，

android.widget.FrameLayout不能强制转换为android.widget.LinearLayout

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请帮助我

您能同时添加布局代码吗？