Android-列表视图中的两个切换按钮，其工作方式类似于单选按钮

Question

我的要求：- 带有选择选项的问题，选项是“是，否，否结果”。选项名称是根据问题自动加载的。所以这个选项在 android 的切换按钮和单选按钮上可用。 但是radion按钮占用空间很大，toggle按钮对我来说更好。

想要在列表视图中使用两个切换按钮（选项）列出问题。 - 完全的。 例如：- 1.第一个切换按钮-“是” 2. 第二个切换按钮 - “否”

条件：- 1.如果点击第一个切换按钮-'ON'，第二个切换按钮应该是'OFF'，反之亦然。 2.但不能通过程序来完成。 3. 请分享您的想法来实现该功能。

总结：- 想要使用 2 个切换按钮，例如单选按钮。

问候， 纳雷什T

Answer 1

试试 Guillaume Beraudo 的代码：

    /*
ToggleImageButton.java
Copyright (C) 2010  Belledonne Communications, Grenoble, France

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
package com.home.automation;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Checkable;
import android.widget.ImageButton;

/**
 * Image button storing a checked state to display alternating drawables.
 * The "checked" drawable is displayed when button is down / checked.
 * The "unchecked" drawable is displayed when button is up / unchecked.
 *
 * @author Guillaume Beraudo
 *
 */
public class ToggleImageButton extends ImageButton implements Checkable, OnClickListener{

    private boolean checked;
    private Drawable stateChecked;
    private Drawable stateUnChecked;
    private boolean drawablesForBackground;
    private OnCheckedChangeListener onCheckedChangeListener;

    public ToggleImageButton(Context context, AttributeSet attrs) {
        super(context, attrs);

        TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.ToggleImageButton);
        stateChecked = getResources().getDrawable(array.getResourceId(R.styleable.ToggleImageButton_checked, -1));
        stateUnChecked = getResources().getDrawable(array.getResourceId(R.styleable.ToggleImageButton_unchecked, -1));
        drawablesForBackground = array.getBoolean(R.styleable.ToggleImageButton_bgdrawables, false);
        setBackgroundColor(Color.TRANSPARENT);

        setOnClickListener(this);
        handleCheckChanged();
    }



    /**
     * @return the stateChecked
     */
    public Drawable getStateChecked() {
        return stateChecked;
    }



    /**
     * @param stateChecked the stateChecked to set
     */
    public void setStateChecked(Drawable stateChecked) {
        this.stateChecked = stateChecked;
    }



    /**
     * @return the stateUnChecked
     */
    public Drawable getStateUnChecked() {
        return stateUnChecked;
    }



    /**
     * @param stateUnChecked the stateUnChecked to set
     */
    public void setStateUnChecked(Drawable stateUnChecked) {
        this.stateUnChecked = stateUnChecked;
    }



    public void setChecked(boolean checked) {
        this.checked = checked;
        handleCheckChanged();
    }

    public boolean isChecked() {
        return checked;
    }


    private void handleCheckChanged() {
        Drawable d = checked? stateChecked : stateUnChecked;
        if (drawablesForBackground) {
            setBackgroundDrawable(d);
        } else {
            setImageDrawable(d);
        }
        requestLayout();
        invalidate();
        if (onCheckedChangeListener != null) onCheckedChangeListener.onCheckedChanged(this, checked);
    }


    public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
        onCheckedChangeListener = listener;
    }

    public static interface OnCheckedChangeListener {
        void onCheckedChanged(ToggleImageButton button, boolean checked);
    }

    public void onClick(View v) {
        toggle();
    }


    @Override
    public void toggle() {
        setChecked(!isChecked());
    }

    @Override
    public boolean performClick() {
        toggle();
        return super.performClick();
    }

}

现在要启用类似广播组的功能，请编写这样的类：

    public class CustomMenuItem extends LinearLayout {
    private ToggleImageButton menuImage;
    private TextView menuText;
    private Context context;
    int resId;
    int resId_Pressed;
    int light = 0;
    private String name;

    public CustomMenuItem(Context context, int resId, int resId_Pressed,int light){
        this(context, null);
        this.context = context;
        this.resId = resId;
        this.resId_Pressed = resId_Pressed;
        this.light = light;
    }

    public CustomMenuItem(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomMenuItem(Context context2, int resId, int resId_Pressed,String areaName) {
        this(context2, null);
        this.context = context2;
        this.resId = resId;
        this.resId_Pressed = resId_Pressed;
        this.name = areaName;
    }

    public LinearLayout getCustomView(){
        LayoutInflater menuItemInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        LinearLayout menuLayout = (LinearLayout) menuItemInflater.inflate(R.layout.menuitem, null); 
        menuImage = (ToggleImageButton) menuLayout.findViewById(R.id.menuimage);
        menuImage.setStateChecked(getResources().getDrawable(resId_Pressed));
        menuImage.setStateUnChecked(getResources().getDrawable(resId));
        menuImage.setChecked(false);
        menuText = (TextView) menuLayout.findViewById(R.id.menutext);
        if(light == 0 && name != null)
            menuText.setText(name);
        else
            menuText.setText(light);
        return menuLayout;
    }
}

在您的 XML 中添加 CustomMenuItem 作为 Layout 并将 ToggleImageButton 添加到它。您可能需要对 CustomMenuItem 类进行某些改进，以处理众多选择中的单个选择。为此，您可以遵循以下简单方法： - 单击 ToggleImageButton 时，遍历按钮列表并将给定 ID 标记为选中，其余标记为未选中。这将是一个非常简单的逻辑。试一试。

一切顺利。