Question

我有一个Recyclerview，每行有两个单选按钮。一个是'是'而另一个是'否'。我想一次只从每行中选择一个单选按钮，并在数组列表中获取该单选按钮的值或位置。为了实现单一选择，我在Radio组中包含了这两个单选按钮。我需要在默认情况下将每行中的“否”单选按钮设置为活动状态。之后，用户可以选择“是”或“否”，并且所选值应存储在ArrayList中。我是如何实现这一目标的。

这是我的适配器代码。

public class MyHealthInfoAdapter extends RecyclerView.Adapter<MyHealthInfoAdapter.MyHealthViewHolder> {

private Context context;
private ArrayList<DonorHealthStatusQuestionare> listQuestions;
private RadioButton lastCheckedRadioBtn = null;

private ArrayList<Integer> listYes = new ArrayList<>();
private ArrayList<Integer> listNo = new ArrayList<>();

private FloatingActionButton floatingActionButton;


public MyHealthInfoAdapter() {
}

public MyHealthInfoAdapter(Context context, ArrayList<DonorHealthStatusQuestionare> listQuestions) {
    this.context = context;
    this.listQuestions = listQuestions;
}

@Override
public MyHealthViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.rv_my_health_info, parent, false);
    return new MyHealthViewHolder(view);
}

@Override
public void onBindViewHolder(final MyHealthViewHolder holder, final int position) {

    final DonorHealthStatusQuestionare donorHealthStatusQuestionare = listQuestions.get(position);
    holder.tvQuestion.setText(donorHealthStatusQuestionare.getQuestions());

}

@Override
public int getItemCount() {
    return listQuestions.size();
}

public class MyHealthViewHolder extends RecyclerView.ViewHolder {

    CardView cvParent;
    TextView tvQuestion;
    RadioButton radioYes, radioNo;
    RadioGroup radioGroup;

    public MyHealthViewHolder(View itemView) {
        super(itemView);
        cvParent = itemView.findViewById(R.id.card_view_my_health_status_rv);
        tvQuestion = itemView.findViewById(R.id.tv_eligibility_question_my_info);
        radioYes = itemView.findViewById(R.id.radio_yes_my_health_info);
        radioNo = itemView.findViewById(R.id.radio_no_my_health_info);

        radioGroup = itemView.findViewById(R.id.my_health_status_check_group);


    }

}


}

这是我的recyclerview布局。

<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/card_view_my_health_status_rv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="1dp">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:baselineAligned="false"
    android:orientation="horizontal"
    android:padding="12dp">

    <RelativeLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:layout_weight="1">

        <TextView
            android:id="@+id/tv_eligibility_question_my_info"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

    </RelativeLayout>


    <RadioGroup
        android:orientation="horizontal"
        android:id="@+id/my_health_status_check_group"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="0">

        <RadioButton
            android:id="@+id/radio_yes_my_health_info"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="16dp"
            android:layout_marginRight="16dp"
            android:text="@string/yes" />

        <RadioButton
            android:id="@+id/radio_no_my_health_info"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/no" />

    </RadioGroup>


</LinearLayout>

Answer 1

    radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(RadioGroup group, int checkedId) {
                RadioButton rbbutton=(RadioButton)findViewByID(checkedId);
                if(rbbutton.getText().toString().equalsIgnoreCase("Yes")){
                 listYes.add(position)
                 }else{
                    listNo.add(position);
                 }
                }
            });

使代码片段全部取消选中：

for(int i=0;i<listQuestions.size();i++){
//do your logic here.
}

带有无线电组的Recyclerview仅选择是或否

1 个答案: