寒平洛一
2015-12-23 13:54
采纳率: 16.7%
浏览 6.1k

布局里有多个RadioButton,但是不在一个RadioGroup里,怎么让他们选择的时候互斥呢!

如题,我一个布局里有多个地方用到RadioButton,由于需要,布局复杂导致他们不在一个RadioGroup里,怎么让他们选择的时候互斥呢,有什么好的方法吗,总不是挨个监听设置其他的RadioButton是Checked为false吧。求高手指教

  • 点赞
  • 写回答
  • 关注问题
  • 收藏
  • 邀请回答

10条回答 默认 最新

  • 秉心说 2015-12-30 10:50
    已采纳

    用这个RadioGroup,在radiogroup里面写布局,随便怎么布局radiobutton都可以
    package com.xhbok.shundai.view;

    import android.annotation.SuppressLint;
    import android.content.Context;
    import android.content.res.TypedArray;
    import android.os.Build;
    import android.util.AttributeSet;
    import android.view.View;
    import android.view.ViewGroup;
    import android.view.accessibility.AccessibilityEvent;
    import android.view.accessibility.AccessibilityNodeInfo;
    import android.widget.CompoundButton;
    import android.widget.LinearLayout;
    import android.widget.RadioButton;

    import java.util.ArrayList;
    import java.util.List;

    public class MutilRadioGroup extends LinearLayout {
    // holds the checked id; the selection is empty by default
    private int mCheckedId = -1;
    // tracks children radio buttons checked state
    private CompoundButton.OnCheckedChangeListener mChildOnCheckedChangeListener;
    // when true, mOnCheckedChangeListener discards events
    private boolean mProtectFromCheckedChange = false;
    private OnCheckedChangeListener mOnCheckedChangeListener;
    private PassThroughHierarchyChangeListener mPassThroughListener;

    /**
     * {@inheritDoc}
     */
    public MutilRadioGroup(Context context) {
        super(context);
        setOrientation(VERTICAL);
        init();
    }
    
    /**
     * {@inheritDoc}
     */
    public MutilRadioGroup(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }
    
    private void init() {
        mChildOnCheckedChangeListener = new CheckedStateTracker();
        mPassThroughListener = new PassThroughHierarchyChangeListener();
        super.setOnHierarchyChangeListener(mPassThroughListener);
    }
    
    /**
     * {@inheritDoc}
     */
    @Override
    public void setOnHierarchyChangeListener(OnHierarchyChangeListener listener) {
        // the user listener is delegated to our pass-through listener
        mPassThroughListener.mOnHierarchyChangeListener = listener;
    }
    
    /**
     * set the default checked radio button, without notification the listeners
     */
    public void setCheckWithoutNotif(int id){
        if (id != -1 && (id == mCheckedId)) {
            return;
        }
    
        mProtectFromCheckedChange = true;
        if (mCheckedId != -1) {
            setCheckedStateForView(mCheckedId, false);
        }
    
        if (id != -1) {
            mProtectFromCheckedChange = true;
        }
        mProtectFromCheckedChange = false;
        mCheckedId = id;
    }
    
    @Override
    public void addView(View child, int index, ViewGroup.LayoutParams params) {
        List<RadioButton> btns = getAllRadioButton(child);
        if(btns != null && btns.size() > 0){
            for(RadioButton button : btns){
                if (button.isChecked()) {
                    mProtectFromCheckedChange = true;
                    if (mCheckedId != -1) {
                        setCheckedStateForView(mCheckedId, false);
                    }
                    mProtectFromCheckedChange = false;
                    setCheckedId(button.getId());
                }
            }
        }
        super.addView(child, index, params);
    }
    
    /**
     * get all radio buttons which are in the view
     * @param child
     */
    private List<RadioButton> getAllRadioButton(View child){
        List<RadioButton> btns = new ArrayList<RadioButton>();
        if (child instanceof RadioButton) {
            btns.add((RadioButton) child);
        }else if(child instanceof ViewGroup){
            int counts = ((ViewGroup) child).getChildCount();
            for(int i = 0; i < counts; i++){
                btns.addAll(getAllRadioButton(((ViewGroup) child).getChildAt(i)));
            }
        }
        return btns;
    }
    
    /**
     * <p>Sets the selection to the radio button whose identifier is passed in
     * parameter. Using -1 as the selection identifier clears the selection;
     * such an operation is equivalent to invoking {@link #clearCheck()}.</p>
     *
     * @param id the unique id of the radio button to select in this group
     *
     * @see #getCheckedRadioButtonId()
     * @see #clearCheck()
     */
    public void check(int id) {
        // don't even bother
        if (id != -1 && (id == mCheckedId)) {
            return;
        }
    
        if (mCheckedId != -1) {
            setCheckedStateForView(mCheckedId, false);
        }
    
        if (id != -1) {
            setCheckedStateForView(id, true);
        }
    
        setCheckedId(id);
    }
    
    private void setCheckedId(int id) {
        mCheckedId = id;
        if (mOnCheckedChangeListener != null) {
            mOnCheckedChangeListener.onCheckedChanged(this, mCheckedId);
        }
    }
    
    private void setCheckedStateForView(int viewId, boolean checked) {
        View checkedView = findViewById(viewId);
        if (checkedView != null && checkedView instanceof RadioButton) {
            ((RadioButton) checkedView).setChecked(checked);
        }
    }
    
    /**
     * <p>Returns the identifier of the selected radio button in this group.
     * Upon empty selection, the returned value is -1.</p>
     *
     * @return the unique id of the selected radio button in this group
     *
     * @see #check(int)
     * @see #clearCheck()
     *
     * @attr ref android.R.styleable#MyRadioGroup_checkedButton
     */
    public int getCheckedRadioButtonId() {
        return mCheckedId;
    }
    
    /**
     * <p>Clears the selection. When the selection is cleared, no radio button
     * in this group is selected and {@link #getCheckedRadioButtonId()} returns
     * null.</p>
     *
     * @see #check(int)
     * @see #getCheckedRadioButtonId()
     */
    public void clearCheck() {
        check(-1);
    }
    
    /**
     * <p>Register a callback to be invoked when the checked radio button
     * changes in this group.</p>
     *
     * @param listener the callback to call on checked state change
     */
    public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
        mOnCheckedChangeListener = listener;
    }
    
    /**
     * {@inheritDoc}
     */
    @Override
    public LayoutParams generateLayoutParams(AttributeSet attrs) {
        return new LayoutParams(getContext(), attrs);
    }
    
    /**
     * {@inheritDoc}
     */
    @Override
    protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
        return p instanceof LayoutParams;
    }
    
    @Override
    protected LinearLayout.LayoutParams generateDefaultLayoutParams() {
        return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    }
    
    @Override
    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
        super.onInitializeAccessibilityEvent(event);
        event.setClassName(MutilRadioGroup.class.getName());
    }
    
    @Override
    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
        super.onInitializeAccessibilityNodeInfo(info);
        info.setClassName(MutilRadioGroup.class.getName());
    }
    
    /**
     * <p>This set of layout parameters defaults the width and the height of
     * the children to {@link #WRAP_CONTENT} when they are not specified in the
     * XML file. Otherwise, this class ussed the value read from the XML file.</p>
     *
     * <p>See
     * for a list of all child view attributes that this class supports.</p>
     *
     */
    public static class LayoutParams extends LinearLayout.LayoutParams {
        /**
         * {@inheritDoc}
         */
        public LayoutParams(Context c, AttributeSet attrs) {
            super(c, attrs);
        }
    
        /**
         * {@inheritDoc}
         */
        public LayoutParams(int w, int h) {
            super(w, h);
        }
    
        /**
         * {@inheritDoc}
         */
        public LayoutParams(int w, int h, float initWeight) {
            super(w, h, initWeight);
        }
    
        /**
         * {@inheritDoc}
         */
        public LayoutParams(ViewGroup.LayoutParams p) {
            super(p);
        }
    
        /**
         * {@inheritDoc}
         */
        public LayoutParams(MarginLayoutParams source) {
            super(source);
        }
    
        /**
         * <p>Fixes the child's width to
         * {@link ViewGroup.LayoutParams#WRAP_CONTENT} and the child's
         * height to  {@link ViewGroup.LayoutParams#WRAP_CONTENT}
         * when not specified in the XML file.</p>
         *
         * @param a the styled attributes set
         * @param widthAttr the width attribute to fetch
         * @param heightAttr the height attribute to fetch
         */
        @Override
        protected void setBaseAttributes(TypedArray a,
                int widthAttr, int heightAttr) {
    
            if (a.hasValue(widthAttr)) {
                width = a.getLayoutDimension(widthAttr, "layout_width");
            } else {
                width = WRAP_CONTENT;
            }
    
            if (a.hasValue(heightAttr)) {
                height = a.getLayoutDimension(heightAttr, "layout_height");
            } else {
                height = WRAP_CONTENT;
            }
        }
    }
    
    /**
     * <p>Interface definition for a callback to be invoked when the checked
     * radio button changed in this group.</p>
     */
    public interface OnCheckedChangeListener {
        /**
         * <p>Called when the checked radio button has changed. When the
         * selection is cleared, checkedId is -1.</p>
         *
         * @param group the group in which the checked radio button has changed
         * @param checkedId the unique identifier of the newly checked radio button
         */
        public void onCheckedChanged(MutilRadioGroup group, int checkedId);
    }
    
    private class CheckedStateTracker implements CompoundButton.OnCheckedChangeListener {
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            // prevents from infinite recursion
            if (mProtectFromCheckedChange) {
                return;
            }
    
            mProtectFromCheckedChange = true;
            if (mCheckedId != -1) {
                setCheckedStateForView(mCheckedId, false);
            }
            mProtectFromCheckedChange = false;
    
            int id = buttonView.getId();
            setCheckedId(id);
        }
    }
    
    /**
     * <p>A pass-through listener acts upon the events and dispatches them
     * to another listener. This allows the table layout to set its own internal
     * hierarchy change listener without preventing the user to setup his.</p>
     */
    private class PassThroughHierarchyChangeListener implements
            OnHierarchyChangeListener {
        private OnHierarchyChangeListener mOnHierarchyChangeListener;
    
        /**
         * {@inheritDoc}
         */
        @SuppressLint("NewApi")
        public void onChildViewAdded(View parent, View child) {
            if (parent == MutilRadioGroup.this ) {
                List<RadioButton> btns = getAllRadioButton(child);
                if(btns != null && btns.size() > 0){
                    for(RadioButton btn : btns){
                        int id = btn.getId();
                        // generates an id if it's missing
                        if (id == View.NO_ID && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                            id = View.generateViewId();
                            btn.setId(id);
                        }
                        btn.setOnCheckedChangeListener(
                                mChildOnCheckedChangeListener);
                    }
                }
            }
    
            if (mOnHierarchyChangeListener != null) {
                mOnHierarchyChangeListener.onChildViewAdded(parent, child);
            }
        }
    
        /**
         * {@inheritDoc}
         */
        public void onChildViewRemoved(View parent, View child) {
            if (parent == MutilRadioGroup.this) {
                List<RadioButton> btns = getAllRadioButton(child);
                if(btns != null && btns.size() > 0){
                    for(RadioButton btn : btns){
                        btn.setOnCheckedChangeListener(null);
                    }
                }
            }
    
            if (mOnHierarchyChangeListener != null) {
                mOnHierarchyChangeListener.onChildViewRemoved(parent, child);
            }
        }
    }
    

    }

    点赞 打赏 评论
  • 把分全给哥 2015-12-23 13:56

    name属性定义成相同的

    点赞 打赏 评论
  • yishuixs 2015-12-23 13:58

    radio本身就是单选的,它们的共同处是input类型相同、name相同,否则就不是一组radio

    点赞 打赏 评论
  • herozhangbz 2015-12-23 14:54
    点赞 打赏 评论
  • 霓为衣兮风为裳 2015-12-23 15:49

    没学过安卓 放在一个groupBox里面可以不

    点赞 打赏 评论
  • Antway_ 2015-12-26 05:07

    这个需要遍历出来,分别判断

    点赞 打赏 评论
  • ssnhqzj 2015-12-26 09:35

    这个只能在代码中实现选择逻辑了

    点赞 打赏 评论
  • sanxiaochengyu 2015-12-26 12:26

    代码中逻辑处理,或者重写,让其可以跨行布局

    点赞 打赏 评论
  • 寒平洛一 2016-01-18 02:21

    图片说明

    点赞 打赏 评论
  • qq_35183189 2016-09-23 09:28

    楼主。。。你解决了么?教教我啊!

    点赞 打赏 评论

相关推荐 更多相似问题