管理没有RadioGroup的单选按钮（单击父视图）

Question

我创建了一个带有4个CardView的XML，包含4个RadioButton和其他布局如下：

fragment_list_of_transport.xml

<?xml version="1.0" encoding="utf-8"?>
<layout>

    <android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <android.support.v7.widget.CardView
                android:clickable="true"
                android:focusable="true"
                android:id="@+id/parent_card_1"
                android:layout_width="0dp"
                android:background="?attr/selectableItemBackground"
                android:layout_height="wrap_content"
                android:layout_marginStart="@dimen/_5sdp"
                android:layout_marginTop="@dimen/_10sdp"
                android:layout_marginEnd="@dimen/_5sdp"
                app:cardCornerRadius="@dimen/_5sdp"
                app:cardElevation="@dimen/_5sdp"
                app:cardPreventCornerOverlap="true"
                app:cardUseCompatPadding="true"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent">

                <android.support.constraint.ConstraintLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <ImageView
                        android:id="@+id/image_view_1"
                        android:layout_width="match_parent"
                        android:layout_height="@dimen/dimen_transport_list_height"
                        android:adjustViewBounds="true"
                        android:contentDescription="@string/app_name"
                        android:scaleType="fitXY"
                        android:src="@drawable/now_courier"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent" />

                    <RadioButton
                        android:id="@+id/radio_button_1"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        app:layout_constraintBottom_toBottomOf="@+id/image_truck_1"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="@+id/image_truck_1" />

                    <ImageView
                        android:id="@+id/image_truck_1"
                        android:layout_width="36dp"
                        android:layout_height="36dp"
                        android:layout_marginStart="16dp"
                        android:contentDescription="@string/app_name"
                        app:layout_constraintBottom_toBottomOf="@+id/title_text_view_1"
                        app:layout_constraintStart_toEndOf="@+id/radio_button_1"
                        app:layout_constraintTop_toTopOf="@+id/title_text_view_1"
                        app:srcCompat="@drawable/ic_truck" />

                    <TextView
                        android:id="@+id/title_text_view_1"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="24dp"
                        android:layout_marginEnd="16dp"
                        android:gravity="center_vertical"
                        android:text="Small express under 10 items"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toEndOf="@+id/image_truck_1"
                        app:layout_constraintTop_toBottomOf="@+id/image_view_1" />

                    <Button
                        android:layout_width="@dimen/_90sdp"
                        android:layout_height="@dimen/_30sdp"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="16dp"
                        android:layout_marginEnd="16dp"
                        android:layout_marginBottom="16dp"
                        android:background="@drawable/background_round_colors"
                        android:paddingLeft="@dimen/_10sdp"
                        android:paddingRight="@dimen/_10sdp"
                        android:text="@string/button_next"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
                        android:textColor="@color/white"
                        app:layout_constraintBottom_toBottomOf="parent"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintHorizontal_bias="1.0"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toBottomOf="@+id/title_text_view_1"
                        app:layout_constraintVertical_bias="0.0" />

                </android.support.constraint.ConstraintLayout>

            </android.support.v7.widget.CardView>

            <android.support.v7.widget.CardView
                android:id="@+id/parent_card_2"
                android:clickable="true"
                android:focusable="true"
                android:background="?attr/selectableItemBackground"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="@dimen/_5sdp"
                android:layout_marginTop="@dimen/_10sdp"
                android:layout_marginEnd="@dimen/_5sdp"
                app:cardCornerRadius="@dimen/_5sdp"
                app:cardElevation="@dimen/_5sdp"
                app:cardPreventCornerOverlap="true"
                app:cardUseCompatPadding="true"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@id/parent_card_1">

                <android.support.constraint.ConstraintLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <ImageView
                        android:id="@+id/image_view_2"
                        android:layout_width="match_parent"
                        android:layout_height="@dimen/dimen_transport_list_height"
                        android:adjustViewBounds="true"
                        android:contentDescription="@string/app_name"
                        android:scaleType="fitXY"
                        android:src="@drawable/now_courier"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent" />

                    <RadioButton
                        android:id="@+id/radio_button_2"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        app:layout_constraintBottom_toBottomOf="@+id/image_truck_2"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="@+id/image_truck_2" />

                    <ImageView
                        android:id="@+id/image_truck_2"
                        android:layout_width="36dp"
                        android:layout_height="36dp"
                        android:layout_marginStart="16dp"
                        android:contentDescription="@string/app_name"
                        app:layout_constraintBottom_toBottomOf="@+id/title_text_view_2"
                        app:layout_constraintStart_toEndOf="@+id/radio_button_2"
                        app:layout_constraintTop_toTopOf="@+id/title_text_view_2"
                        app:srcCompat="@drawable/ic_truck" />

                    <TextView
                        android:id="@+id/title_text_view_2"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="24dp"
                        android:layout_marginEnd="16dp"
                        android:gravity="center_vertical"
                        android:text="Small express under 10 items"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toEndOf="@+id/image_truck_2"
                        app:layout_constraintTop_toBottomOf="@+id/image_view_2" />

                    <Button
                        android:layout_width="@dimen/_90sdp"
                        android:layout_height="@dimen/_30sdp"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="16dp"
                        android:layout_marginEnd="16dp"
                        android:layout_marginBottom="16dp"
                        android:background="@drawable/background_round_colors"
                        android:paddingLeft="@dimen/_10sdp"
                        android:paddingRight="@dimen/_10sdp"
                        android:text="@string/button_next"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
                        android:textColor="@color/white"
                        app:layout_constraintBottom_toBottomOf="parent"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintHorizontal_bias="1.0"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toBottomOf="@+id/title_text_view_2"
                        app:layout_constraintVertical_bias="0.0" />

                </android.support.constraint.ConstraintLayout>


            </android.support.v7.widget.CardView>

            <android.support.v7.widget.CardView
                android:clickable="true"
                android:focusable="true"
                android:id="@+id/parent_card_3"
                android:layout_width="0dp"
                android:background="?attr/selectableItemBackground"
                android:layout_height="wrap_content"
                android:layout_marginStart="@dimen/_5sdp"
                android:layout_marginTop="@dimen/_10sdp"
                android:layout_marginEnd="@dimen/_5sdp"
                app:cardCornerRadius="@dimen/_5sdp"
                app:cardElevation="@dimen/_5sdp"
                app:cardPreventCornerOverlap="true"
                app:cardUseCompatPadding="true"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@id/parent_card_2">

                <android.support.constraint.ConstraintLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <ImageView
                        android:id="@+id/image_view_3"
                        android:layout_width="match_parent"
                        android:layout_height="@dimen/dimen_transport_list_height"
                        android:adjustViewBounds="true"
                        android:contentDescription="@string/app_name"
                        android:scaleType="fitXY"
                        android:src="@drawable/now_courier"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent" />

                    <RadioButton
                        android:id="@+id/radio_button_3"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        app:layout_constraintBottom_toBottomOf="@+id/image_truck_3"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="@+id/image_truck_3" />

                    <ImageView
                        android:id="@+id/image_truck_3"
                        android:layout_width="36dp"
                        android:layout_height="36dp"
                        android:layout_marginStart="16dp"
                        android:contentDescription="@string/app_name"
                        app:layout_constraintBottom_toBottomOf="@+id/title_text_view_3"
                        app:layout_constraintStart_toEndOf="@+id/radio_button_3"
                        app:layout_constraintTop_toTopOf="@+id/title_text_view_3"
                        app:srcCompat="@drawable/ic_truck" />

                    <TextView
                        android:id="@+id/title_text_view_3"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="24dp"
                        android:layout_marginEnd="16dp"
                        android:gravity="center_vertical"
                        android:text="Small express under 10 items"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toEndOf="@+id/image_truck_3"
                        app:layout_constraintTop_toBottomOf="@+id/image_view_3" />

                    <Button
                        android:layout_width="@dimen/_90sdp"
                        android:layout_height="@dimen/_30sdp"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="16dp"
                        android:layout_marginEnd="16dp"
                        android:layout_marginBottom="16dp"
                        android:background="@drawable/background_round_colors"
                        android:paddingLeft="@dimen/_10sdp"
                        android:paddingRight="@dimen/_10sdp"
                        android:text="@string/button_next"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
                        android:textColor="@color/white"
                        app:layout_constraintBottom_toBottomOf="parent"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintHorizontal_bias="1.0"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toBottomOf="@+id/title_text_view_3"
                        app:layout_constraintVertical_bias="0.0" />

                </android.support.constraint.ConstraintLayout>


            </android.support.v7.widget.CardView>

            <android.support.v7.widget.CardView
                android:clickable="true"
                android:focusable="true"
                android:id="@+id/parent_card_4"
                android:background="?attr/selectableItemBackground"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="@dimen/_5sdp"
                android:layout_marginTop="@dimen/_10sdp"
                android:layout_marginEnd="@dimen/_5sdp"
                android:layout_marginBottom="@dimen/_10sdp"
                app:cardCornerRadius="@dimen/_5sdp"
                app:cardElevation="@dimen/_5sdp"
                app:cardPreventCornerOverlap="true"
                app:cardUseCompatPadding="true"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@id/parent_card_3">

                <android.support.constraint.ConstraintLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <ImageView
                        android:id="@+id/image_view_4"
                        android:layout_width="match_parent"
                        android:layout_height="@dimen/dimen_transport_list_height"
                        android:adjustViewBounds="true"
                        android:contentDescription="@string/app_name"
                        android:scaleType="fitXY"
                        android:src="@drawable/now_courier"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="parent" />

                    <RadioButton
                        android:id="@+id/radio_button_4"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        app:layout_constraintBottom_toBottomOf="@+id/image_truck_4"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toTopOf="@+id/image_truck_4" />

                    <ImageView
                        android:id="@+id/image_truck_4"
                        android:layout_width="36dp"
                        android:layout_height="36dp"
                        android:layout_marginStart="16dp"
                        android:contentDescription="@string/app_name"
                        app:layout_constraintBottom_toBottomOf="@+id/title_text_view_4"
                        app:layout_constraintStart_toEndOf="@+id/radio_button_4"
                        app:layout_constraintTop_toTopOf="@+id/title_text_view_4"
                        app:srcCompat="@drawable/ic_truck" />

                    <TextView
                        android:id="@+id/title_text_view_4"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="24dp"
                        android:layout_marginEnd="16dp"
                        android:gravity="center_vertical"
                        android:text="Small express under 10 items"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintStart_toEndOf="@+id/image_truck_4"
                        app:layout_constraintTop_toBottomOf="@+id/image_view_4" />

                    <Button
                        android:layout_width="@dimen/_90sdp"
                        android:layout_height="@dimen/_30sdp"
                        android:layout_marginStart="16dp"
                        android:layout_marginTop="16dp"
                        android:layout_marginEnd="16dp"
                        android:layout_marginBottom="16dp"
                        android:background="@drawable/background_round_colors"
                        android:paddingLeft="@dimen/_10sdp"
                        android:paddingRight="@dimen/_10sdp"
                        android:text="@string/button_next"
                        android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
                        android:textColor="@color/white"
                        app:layout_constraintBottom_toBottomOf="parent"
                        app:layout_constraintEnd_toEndOf="parent"
                        app:layout_constraintHorizontal_bias="1.0"
                        app:layout_constraintStart_toStartOf="parent"
                        app:layout_constraintTop_toBottomOf="@+id/title_text_view_4"
                        app:layout_constraintVertical_bias="0.0" />

                </android.support.constraint.ConstraintLayout>


            </android.support.v7.widget.CardView>

        </android.support.constraint.ConstraintLayout>
    </android.support.v4.widget.NestedScrollView>
</layout>

输出：

我想点击RadioButton和CardView来管理RadioButton，我使用了以下代码：

/**
 * A simple {@link Fragment} subclass.
 */
public class FragmentListTransport extends Fragment implements View.OnClickListener {

    FragmentListOfTransportBinding mBinding;

    public FragmentListTransport() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        mBinding = DataBindingUtil.inflate(inflater, R.layout.fragment_list_of_transport, container, false);

        mBinding.parentCard1.setOnClickListener(this);
        mBinding.parentCard2.setOnClickListener(this);
        mBinding.parentCard3.setOnClickListener(this);
        mBinding.parentCard4.setOnClickListener(this);

        return mBinding.getRoot();
    }


    @Override
    public void onClick(View v) {

        switch (v.getId()) {
            case R.id.parent_card_1:
                mBinding.radioButton1.setChecked(true);
                mBinding.radioButton2.setChecked(false);
                mBinding.radioButton3.setChecked(false);
                mBinding.radioButton4.setChecked(false);
                break;
            case R.id.parent_card_2:
                mBinding.radioButton1.setChecked(false);
                mBinding.radioButton2.setChecked(true);
                mBinding.radioButton3.setChecked(false);
                mBinding.radioButton4.setChecked(false);
                break;
            case R.id.parent_card_3:
                mBinding.radioButton1.setChecked(false);
                mBinding.radioButton2.setChecked(false);
                mBinding.radioButton3.setChecked(true);
                mBinding.radioButton4.setChecked(false);
                break;
            case R.id.parent_card_4:
                mBinding.radioButton1.setChecked(false);
                mBinding.radioButton2.setChecked(false);
                mBinding.radioButton3.setChecked(false);
                mBinding.radioButton4.setChecked(true);
                break;
        }
    }
}

有没有最好的方法来管理它？

Answer 1

我不是最简单的方式（如果你有简单的方法，那么我会接受它。）：

/**
 * A simple {@link Fragment} subclass.
 */
public class FragmentListTransport extends Fragment implements View.OnClickListener {

    FragmentListOfTransportBinding mBinding;

    public FragmentListTransport() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        mBinding = DataBindingUtil.inflate(inflater, R.layout.fragment_list_of_transport, container, false);

        mBinding.parentCard1.setOnClickListener(this);
        mBinding.parentCard2.setOnClickListener(this);
        mBinding.parentCard3.setOnClickListener(this);
        mBinding.parentCard4.setOnClickListener(this);
        mBinding.radioButton1.setOnClickListener(this);
        mBinding.radioButton2.setOnClickListener(this);
        mBinding.radioButton3.setOnClickListener(this);
        mBinding.radioButton4.setOnClickListener(this);

        return mBinding.getRoot();
    }


    @Override
    public void onClick(View v) {

        switch (v.getId()) {
            case R.id.parent_card_1:
            case R.id.radio_button_1:
                clickedRadioButton(mBinding.radioButton1);
                break;
            case R.id.parent_card_2:
            case R.id.radio_button_2:
                clickedRadioButton(mBinding.radioButton2);
                break;
            case R.id.parent_card_3:
            case R.id.radio_button_3:
                clickedRadioButton(mBinding.radioButton3);
                break;
            case R.id.parent_card_4:
            case R.id.radio_button_4:
                clickedRadioButton(mBinding.radioButton4);
                break;
        }
    }

    private void clickedRadioButton(RadioButton radioButton) {
        mBinding.radioButton1.setChecked(false);
        mBinding.radioButton2.setChecked(false);
        mBinding.radioButton3.setChecked(false);
        mBinding.radioButton4.setChecked(false);

        radioButton.setChecked(true);
    }
}

如果有人有这么简单的方法，请发表回答。我会接受的。