android clear radiogroup onclick button(清除)

Question

如何在单击按钮时取消选中单选组中的所有单选按钮。可能的代码是什么。试过 radiogroup.clearcheck() - 不工作。我的无线电组在列表视图中。从两个不同的布局调用按钮和列表视图。

在按钮上（清除）单击单选按钮应取消选中

查看代码请关注post 提前致谢。

Answer 1

要清除 ListView 中的所有单选按钮，请在您的适配器中 Class ,

RadioButton rb;

rb.setChecked(false);

为所选答案传递任何默认值。说 selectedAnser = 0;

在您的适配器中，

if(selectedAnswer.equals("0"))
{
//make all your radiobutton to checked false
radioButton.setChecked(false);
}

在您的 Activity 中，单击清除按钮时，

 mClear.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

              for(int i=0;i<yourDatalist.size();i++)
                  {

                    yourDatalist.get(i).setSelectedAnswer = "0";
                  } 
               //make adapter notify  here
               adapter.notifyDataSetChanged();
            }
        });

Answer 2

使用

 radioGroup.clearCheck();

或

radioGroup.check(-1);

或

             for (int i = 0; i < radioGroup.getChildCount(); i++) {
                            RadioButton radioButton = (RadioButton) radioGroup.getChildAt(i);
                            radioButton.setChecked(false);
                        }

Answer 3

use this example

radioGroup = (RadioGroup) findViewById(R.id.radioGroup); radioGroup.clearCheck();

    radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(RadioGroup group, int checkedId) {
            RadioButton rb = (RadioButton) group.findViewById(checkedId);
            if (null != rb && checkedId > -1) {
                Toast.makeText(MainActivity.this, rb.getText(), Toast.LENGTH_SHORT).show();
            }

        }
    });

}

public void onClear(View v) {
    /* Clears all selected radio buttons to default */
    radioGroup.clearCheck();
}

Answer 4

将您的 CustomAdapter 构造函数更改为：

public CustomAdapter(Context applicationContext, String[] questionsList) {
    this.context = context;
    this.questionsList = questionsList;
    selectedAnswers = new ArrayList<>();
    for (int i = 0; i < questionsList.length; i++) {
        selectedAnswers.add("3");
    }
    inflter = (LayoutInflater.from(applicationContext));
}

收件人：

public CustomAdapter(Context applicationContext, String[] questionsList) {
    this.context = context;
    this.questionsList = questionsList;
    resetAnswers();
    inflter = (LayoutInflater.from(applicationContext));
}

public void resetAnswers(){
    selectedAnswers = new ArrayList<>();
    for (int i = 0; i < questionsList.length; i++) {
        selectedAnswers.add("3");
    }
}

并在 OnClick() 内部用于清除按钮：

customAdapter.resetAnswers();
customAdapter.notifyDataSetChanged();

希望对您有所帮助！

android clear radiogroup onclick button(清除)

android clear radiogroup onclick button(clear)

android

listview

android-view

android-adapterview

android-radiogroup