动态单选按钮控制

Question

代码...... {

private void createRadioButton() {

        final RadioButton[] rb = new RadioButton[5];
        for(int i=0; i<5; i++){
            rb[i]  = new RadioButton(this);
            ll.addView(rb[i]); 
            rb[i].setText("Test");
         }
         ll.addView(submit); 
          submit.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
                for(int i = 0; i < 5; i++) { 
                    ll.removeView(rb[i]); 
                }  
                ll.removeView(submit);
                Questions();
         }});   
    }

我遇到的问题是出现单选按钮,用户可以选择任何一个.作为初学者,我确定我没有正确设置单选按钮.用户可以选择所有五个按钮,然后一旦选择,他们也无法取消选中它们.用户应该只能从五个中选择一个选项......我怎样才能做到这一点？

Answer 1

您必须将单选按钮添加到RadioGroup,然后将RadioGroup添加到布局

我想念一些像提交的信息,但你的代码应该是这样的:

private void createRadioButton() {
    final RadioButton[] rb = new RadioButton[5];
    RadioGroup rg = new RadioGroup(this); //create the RadioGroup
    rg.setOrientation(RadioGroup.HORIZONTAL);//or RadioGroup.VERTICAL
    for(int i=0; i<5; i++){
        rb[i]  = new RadioButton(this);
        rg.addView(rb[i]); //the RadioButtons are added to the radioGroup instead of the layout
        rb[i].setText("Test");
    }
    ll.addView(rg);//you add the whole RadioGroup to the layout
    ll.addView(submit); 
    submit.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            for(int i = 0; i < 5; i++) { 
                rg.removeView(rb[i]);//now the RadioButtons are in the RadioGroup
            }  
            ll.removeView(submit);
            Questions();
        }
    });   
}