Question

如图所示，我可以渲染视图。但是，可扩展视图的onChildClick事件不会被触发。

此外，适配器中的触摸事件没有响应。我的布局细节如下所示。

可以在here中找到完整的源代码。

main_activity.xml

<ExpandableListView
    android:id="@+id/list_brands"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:divider="@null"
    android:groupIndicator="@null"
    android:dividerHeight="5dp" />

item_parent.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical">

    <TextView
        android:id="@+id/text_brand"
        android:textSize="18dp"
        android:text="Text"
        android:layout_weight="1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ImageView
        android:id="@+id/image_indicator"
        android:src="@drawable/ic_keyboard_arrow_down_black_18dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

item_group_child.xml

<android.support.v7.widget.RecyclerViewxmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mobiles"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

item_child.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="10dp">

        <ImageView
            android:id="@+id/image_mobile"
            android:layout_width="70dp"
            android:adjustViewBounds="true"
            android:layout_height="120dp" />


        <TextView
            android:id="@+id/text_mobile_model"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center" />

        <TextView
            android:id="@+id/text_mobile_price"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center" />

</LinearLayout>

**我的解决方案：** 触摸事件直接传递到“回收器列表”视图中的“视图”持有者的UI元素。但是为了给整个布局提供触摸事件，我在child_item布局的顶部添加了透明按钮，并添加了一个点击监听器。以下是更新的child_item.xml

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <FrameLayout
            android:layout_height="match_parent"
            android:layout_width="match_parent" >

        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/dummy_click"
            android:background="@android:color/transparent"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:padding="10dp"

            android:background="@color/colorGrey"
            >
        <ImageView
            android:id="@+id/img_subcategory"
            android:layout_gravity="center"
            android:src="@mipmap/ic_launcher"
            android:layout_marginTop="10dp"
            android:layout_width="180dp"
            android:layout_height="90dp"

            android:scaleType="fitXY"/>
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Sub Category"
            android:textColor="@color/colorWhite"
            android:layout_marginTop="10dp"
            android:layout_marginBottom="5dp"
            android:gravity="center"
            android:id="@+id/txt_subcategory"
            android:textSize="@dimen/app_text_title"/>

        </LinearLayout>
        </FrameLayout>
    </LinearLayout>

Answer 1

的理论

ExpandableListView，child click示例：


点击儿童，你可以这样处理。

getExpandableListView().setOnChildClickListener(new OnChildClickListener() { public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { // your code... } });

可展开的RecyclerView，有用的library和简单item click support：


Hugo的这篇博客文章展示了一种没有听众的替代方式：   http://www.littlerobots.nl/blog/Handle-Android-RecyclerView-Clicks/

归结为添加这些行：

ItemClickSupport.addTo(mRecyclerView).setOnItemClickListener(new ItemClickSupport.OnItemClickListener() { @Override public void onItemClicked(RecyclerView recyclerView, int position, View v) { // do it } });

使用此课程时：

public class ItemClickSupport {...}

ids.xml中的这个值：

<?xml version="1.0" encoding="utf-8"?> <resources> <item name="item_click_support" type="id" /> </resources>

Why doesn't RecyclerView have onItemClickListener()? And how RecyclerView is different from Listview?


自从引入ListView以来，onItemClickListener一直是   有问题的。你有任何一个点击监听器的那一刻   内部元素不会触发回调，但事实并非如此   通知或记录良好（如果有的话）所以有很多   关于它的混乱和SO问题。

OnItemClickListener doesn't work with ListView item containing button


只需将此行添加到项目视图中，而不是listView本身

android:focusable="false"

从Android custom ListView unable to click on items
查看有关此内容的更多详细信息

的实践

@Override public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { ChildHolder childHolder = null; if (convertView == null) { LayoutInflater inflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE); convertView = inflater.inflate(R.layout.item_group_child, parent, false); childHolder = new ChildHolder(); // Fix listview onclicklistener issue: inner views can not be focusable childHolder.YOUR_INNER_BUTTON = (YOUR_BUTTON_TYPE) convertView.findViewById(R.id.YOUR_BUTTON_ID); childHolder.YOUR_INNER_BUTTON.setFocusable(false); convertView.setTag(childHolder); } else { childHolder = (ChildHolder) convertView.getTag(); } childHolder.horizontalListView = (RecyclerView) convertView.findViewById(R.id.mobiles); LinearLayoutManager layoutManager = new LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false); childHolder.horizontalListView.setLayoutManager(layoutManager); MobileAdapter horizontalListAdapter = new MobileAdapter(context, brands.get(groupPosition).mobiles); childHolder.horizontalListView.setAdapter(horizontalListAdapter); return convertView; }

根据我的legacy code
为您的代码添加了两行代码
// Creates a ViewHolder and store references to the children views (collapsed) holder = new ViewHolderChildren(); holder.textLine = (TextView) convertView.findViewById(R.id.usersTextLine); holder.subtextLine = (TextView) convertView.findViewById(R.id.usersSubtextLine); holder.iconLine = (ImageView) convertView.findViewById(R.id.usersIconLine); holder.buttonLine = (ImageButton) convertView.findViewById(R.id.usersButtonLine); holder.infoLine = (TextView) convertView.findViewById(R.id.usersInfoLine); holder.infoLine.setVisibility(TextView.GONE); holder.userprofileButton = (ImageButton) convertView.findViewById(R.id.usersUserprofileBtn); holder.buttonLine.setOnClickListener(new OnClickListener() { public void onClick(View v) { // if gone, set visible and arrow up image if (holder.infoLine.getVisibility() == TextView.GONE) { holder.infoLine.setVisibility(TextView.VISIBLE); holder.buttonLine.setImageLevel(1); } // if visible, set gone and arrow down image else { holder.infoLine.setVisibility(TextView.GONE); holder.buttonLine.setImageLevel(0); } } }); //fixed listview onclicklistener bug: inner views can not be focusable holder.buttonLine.setFocusable(false); convertView.setTag(holder);

具有回收站列表视图的可扩展列表视图作为子项

1 个答案:

的理论

的实践