分类导航
iOSAndroidSwiftHybridCocos2d-xFluttersilverlightCordova

android expandlistview不会扩展或接收点击事件

Android   发布时间：2022-04-28  发布网站：大佬教程  code.js-code.com
大佬教程收集整理的这篇文章主要介绍了android expandlistview不会扩展或接收点击事件，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
我不能为我的生活找出为什么我的ExpandableListView不扩展…我已经使用了log语句关于每个点击监听器,我可以找到ExpandableListView,它看起来不像任何一个被调用.

我知道有很多关于这个话题的帖子,但我已经阅读了所有的内容,尝试了许多事情,没有运气,希望我错过了一些很容易被别人发现的小错误.

主要活动：

public class ForumListActivity extends Activity  {

    private static ArrayList<Forum> forumList;
    private static ArrayList<ArrayList<SubForum>> subForumList;
    private ExpandableListView forumListView;
    private Forumlistadapter forumlistadapter;

    @Override
    public void onCreate(Bundle savedInstanceStatE) {
        super.onCreate(savedInstanceStatE);
        this.setContentView(R.layout.main_pagE);
        this.getWindow().setSofTinputMode(WindowManager.LayoutParams.soFT_INPUT_STATE_ALWAYS_HIDDEN);

        forumListView = (ExpandableListView) this.findViewById(R.id.main_page_forum_list);

        forumList = new ArrayList<Forum>();
        subForumList = new ArrayList<ArrayList<SubForum>>();
        setUpForums(this);

        forumlistadapter = new Forumlistadapter(this,forumList,subForumList);
        forumListView.setAdapter(forumlistadapter);

        forumListView.setOnGroupExpandListener(new OnGroupExpandListener(){
            @Override
            public void onGroupExpand(int groupPosition) {
                Log.d("onGroupExpand","this works?");
                for(int i=0; i<forumlistadapter.getGroupCount(); i++) {
                    if(i != groupPosition) 
                        forumListView.collapseGroup(groupPosition);
                }
            }
        });

        forumListView.setOnGroupClickListener(new OnGroupClickListener() {
            @Override
            public Boolean onGroupClick(ExpandableListView parent,View v,int groupPosition,long id) {
                Log.d("onGroupClick:","worked");
                parent.expandGroup(groupPosition);
                return true;
            }
        });
    }

注意：setUpForums()方法只需要系统数组并将它们放入forumList和subForumList

ListViewAdapter：

public class Forumlistadapter extends Baseexpandablelistadapter {

    private ArrayList<Forum> groups;
    private ArrayList<ArrayList<SubForum>> children;
    private Context ctx;

    public Forumlistadapter(Context ctx,ArrayList<Forum> groups,ArrayList<ArrayList<SubForum>> children) {
        this.ctx = ctx;
        this.groups = groups;
        this.children = children;
    }



    @Override
    public Object getChild(int groupPosition,int childPosition) {
        return children.get(groupPosition).get(childPosition);
    }



    @Override
    public long getChildId(int groupPosition,int childPosition) {
        return childPosition;
    }



    @Override
    public View getChildView(int groupPosition,int childPosition,Boolean isLastChild,View convertView,ViewGroup parent) {
        if (convertView == null) {
            LayoutInflater inflater = LayoutInflater.from(ctX);
            convertView = inflater.inflate(R.layout.forum_list_child_item_row,null);
        }

        SubForum currentSubForum = children.get(groupPosition).get(childPosition);
        TextView name = (TextView)convertView.findViewById(R.id.child_row_forum_titlE);
        TextView desc = (TextView)convertView.findViewById(R.id.child_row_forum_description);

        if (name != null)
            name.setText(currentSubForum.getName());

        if (desc != null)
            desc.setText(currentSubForum.getDescription());

        convertView.setFocusableInTouchMode(true);
        return convertView;
    }



    @Override
    public int getChildrenCount(int groupPosition) {
        return children.get(groupPosition).size();
    }



    @Override
    public Object getGroup(int groupPosition) {
        return groups.get(groupPosition);
    }



    @Override
    public int getGroupCount() {
        return groups.size();
    }



    @Override
    public long getGroupId(int groupPosition) {
        return groupPosition;
    }



    @Override
    public View getGroupView(int groupPosition,Boolean isExpanded,ViewGroup parent) {
        if (convertView == null)
        {
            LayoutInflater inflater = LayoutInflater.from(ctX);
            convertView = inflater.inflate(R.layout.forum_list_group_item_row,null);
        }

        Forum currentForum = (Forum) groups.get(groupPosition);
        TextView name = (TextView) convertView.findViewById(R.id.group_item_forum_titlE);
        //ImageView image = (ImageView) convertView.findViewById(R.id.group_item_expander_imagE);

        if(name != null)
            name.setText(currentForum.getName());           

        /*
        if(image != null) {
            int[][] group_state_sets = {{},{android.R.attr.state_expandeD}};
            image.setVisibility(View.VISIBLE);  
            int stateSeTindex = (isExpanded ? 1 : 0) ;  
            Drawable drawable = image.getDrawable();  
            drawable.setState(group_state_sets[stateSeTindex]);  
        }
        */

        return convertView;
    }



    @Override
    public Boolean hasStablEIDs() {
        return true;
    }



    @Override
    public Boolean isChildSELEctable(int groupPosition,int childPosition) {
        return true;
    }


}

集团布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://scheR_588_11845@as.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:BACkground="@drawable/turquoise_gradient"
    android:orientation="horizontal"
    android:paddingTop="6dip"
    android:paddingBottom="6dip"
    android:paddingLeft="6dip" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:BACkground="@drawable/turquoise_gradient"
        android:orientation="vertical"
        android:padding="2dip" >

        <TextView
            android:id="@+id/group_item_forum_title"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical|left"
            android:gravity="left"
            android:paddingLeft="5dip"
            android:textColor="@color/white"
            android:textSize="16dip" />

    </LinearLayout>

    <!--  
    <LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical"
        android:gravity="center|right">

        <ImageView
            android:id="@+id/group_item_expander_image"
            android:focusable="false"
            android:focusableInTouchMode="false"
            android:gravity="center"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:src="@drawable/collapse_down" />


    </LinearLayout> -->

</LinearLayout>

儿童布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://scheR_588_11845@as.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:BACkground="@drawable/turquoise_gradient"
    android:orientation="horizontal"
    android:paddingTop="6dip"
    android:paddingBottom="6dip"
    android:paddingLeft="6dip" >


    <LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="2dip"
        android:BACkground="@drawable/turquoise_gradient" >

        <TextView
            android:id="@+id/child_row_forum_title"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:gravity="left"
            android:layout_gravity="center_vertical"
            android:paddingLeft="5dip"
            android:textColor="@color/white"
            android:maxLines="1"
            android:textSize="11dip"  />

         <TextView
            android:id="@+id/child_row_forum_description"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:gravity="left"
            android:layout_gravity="center_vertical"
            android:paddingLeft="15dip"
            android:textColor="@color/white"
            android:maxLines="2"
            android:textSize="11dip"  />

    </LinearLayout>

</LinearLayout>

主页面布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    xmlns:android="http://scheR_588_11845@as.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:BACkground="@color/black"
    android:orientation="vertical" >

    <ExpandableListView
        android:id="@+id/main_page_forum_list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:BACkground="@color/black"
        android:divider="@color/black"
        android:dividerHeight="1dip"
        android:clickable="true" />

</LinearLayout>

任何您可以提供的帮助是非常感谢！

@H_673_28@

解决方法

我也遇到像你一样的类似问题.经过几天的调查,我发现我做错了事情.所以我通过做小的修改来修正它正常工作.

我们来看看setOnGroupClickListener中的Boolean onGroupClick(…)的正文.你已经返回true,意味着“the click was handled”

如果要扩展,您应该返回false.所以我建议你这样做：

forumListView.setOnGroupClickListener(new OnGroupClickListener() {
    @Override
    public Boolean onGroupClick(ExpandableListView parent,long id) {
            Log.d("onGroupClick:","worked");
            parent.expandGroup(groupPosition);
            return false;
        }
    });

在Android.widget.ExpandableListView类中,有一个名为Boolean handleItemClick(View v,int position,long id)的方法,该方法负责扩展/折叠组或将点击传递给适当的子节点.

/* It's a group click,so pass on event */
         if (mOnGroupClickListener != null) {
             if (mOnGroupClicklistener.onGroupClick(this,v,pos@R_404_1979@data.position.groupPos,id)) {
                 pos@R_404_1979@data.recycle();
                 return true;
             }
         }

  /* expanding/collapsing/other tasks... */

如果您实现onGroupClick返回true,则第8行以下的代码将永远不会被执行. (这意味着组不会崩溃,扩展)

希望我的答案帮助你:-)祝你好运！

@H_673_28@ @H_673_28@

大佬总结

以上是大佬教程为你收集整理的android expandlistview不会扩展或接收点击事件全部内容，希望文章能够帮你解决android expandlistview不会扩展或接收点击事件所遇到的程序开发问题。

如果觉得大佬教程网站内容还不错，欢迎将大佬教程推荐给程序员好友。

本图文内容来源于网友网络收集整理提供，作为学习参考使用，版权属于原作者。
如您有任何意见或建议可联系处理。小编QQ：384754419，请注明来意。
标签：android不会事件扩展接收点击
猜你在找的Android相关文章
其他相关热搜词更多
phpJavaPython程序员load中如何string使用参数jquery开发安装listlinuxiosandroid工具javascriptcap