ExpandableListView 的项目得到混合

Question

所以我制作了这个用于梦境分析的应用程序，它在手机上运行良好，但在平板电脑上，explists 中的信息混合在一起，如下图所示。

也就是说，当您单击该组时，它应该隐藏/显示其子项，但正如您所见，在平板电脑上它只是继续一个接一个地绘制信息，就像显示不会刷新其内容一样，我有不知道该怎么办，所以请你帮忙。

容器布局：

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

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


    <ExpandableListView
        android:id="@+id/sExpList"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:groupIndicator="@null" />

    <!-- FOR PORTRAIT LAYOUTS !-->
    <FrameLayout
        android:id="@+id/adLayout"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|center_horizontal"
        android:layout_marginTop="5dp"
        android:baselineAligned="false"
        android:orientation="vertical"/>
</LinearLayout>

组元代码：

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    >

    <TextView
        android:id="@+id/textGroup"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_marginTop="20dp"
        android:layout_weight="1"
        android:textStyle="bold"
        android:textSize="@dimen/text_normal_size" />

    <ImageButton

        android:id="@+id/sExp_BtnAdd"
        android:layout_width="@dimen/btns_heigh"
        android:layout_height="@dimen/btns_heigh"
        android:layout_gravity="center_vertical"
        android:contentDescription=""
        android:focusable="false"
        android:scaleType="centerCrop"
        android:src="?attr/img_add" />

</LinearLayout>

子元素代码：

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="match_parent">

    <TextView
            android:id="@+id/textChild"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:layout_marginTop="20dp"
            android:textColor="@android:color/white"
            android:layout_weight="1"
        android:textSize="@dimen/text_normal_size" />

    <ImageButton
            android:layout_width="@dimen/btns_heigh"
            android:layout_height="@dimen/btns_heigh"
            android:id="@+id/sExp_BtnEdit"
            android:layout_gravity="center_vertical"
            android:src="?attr/img_edit"
            android:scaleType="centerCrop"
            android:focusable="false"
        android:layout_marginRight="@dimen/btns_heigh" />


</LinearLayout>

活动代码：

import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.database.Cursor;
import android.os.Bundle;
import android.util.Log;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;

/**
 * Created with IntelliJ IDEA.
 * User: Movsar Bekaev
 * Date: 11.06.13
 * Time: 7:30
 * To change this template use File | Settings | File Templates.
 */
public class ActSignsManager extends cbActivity {


    ExpandableListView expListView;

    int selected_type;
    String[] cats;
    ArrayList<xSign> MySigns;
    _sManagerExpAdapter adapter;


    String[] catsMind;
    String[] catsAction;
    String[] catsForm;
    String[] catsCircumstances;


    private void cInitialization() {
        setContentView(R.layout.alay_signs_manager);

        catsMind = getResources().getStringArray(R.array.smanager_cats_mind);
        catsAction = getResources().getStringArray(R.array.smanager_cats_action);
        catsForm = getResources().getStringArray(R.array.smanager_cats_form);
        catsCircumstances = getResources().getStringArray(R.array.smanager_cats_circumstances);

        expListView = (ExpandableListView) findViewById(R.id.sExpList);

        newSignFunc();
        readSigns();
        expFiller();
        adapter.notifyDataSetChanged();


        expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
            public boolean onChildClick(ExpandableListView parent, View v,
                                        int groupPosition, int childPosition, long id) {
                String s = MySigns.get(SignIndexAt(selected_type, groupPosition, adapter.getChild(groupPosition, childPosition).toString())).getTitle();
                Toast.makeText(ActSignsManager.this, String.valueOf(s), Toast.LENGTH_LONG).show();
                return false;
            }
        });
        expListView.setOnCreateContextMenuListener(new View.OnCreateContextMenuListener() {

            @Override
            public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
                String menuItems[];
                ExpandableListView.ExpandableListContextMenuInfo info =
                        (ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
                int type = ExpandableListView.getPackedPositionType(info.packedPosition);
                int groupPos = ExpandableListView.getPackedPositionGroup(info.packedPosition);
                int childPos = ExpandableListView.getPackedPositionChild(info.packedPosition);

                if (type == 0) {

                    menuItems = getResources().getStringArray(R.array.exp_menu_ongroup);
                    menu.setHeaderTitle(adapter.getGroupText(groupPos));
                    for (int i = 0; i < menuItems.length; i++) {
                        menu.add(Menu.NONE, i, i, menuItems[i]);
                    }
                }
                if (type == 1) {
                    String s = adapter.getChild(groupPos, childPos).toString();
                    menuItems = getResources().getStringArray(R.array.exp_menu_onchild);
                    menu.setHeaderTitle(s);
                    for (int i = 0; i < menuItems.length; i++) {
                        menu.add(Menu.NONE, i, i, menuItems[i]);
                    }
                }
            }
        });

    }

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setTheme(R.style.DarkTheme);
        cInitialization();

    }

    @Override
    public boolean onContextItemSelected(MenuItem item) {
        ExpandableListView.ExpandableListContextMenuInfo info = (ExpandableListView.ExpandableListContextMenuInfo) item.getMenuInfo();
        int menuItemIndex = item.getItemId();
        int type = ExpandableListView.getPackedPositionType(info.packedPosition);
        int groupPos = ExpandableListView.getPackedPositionGroup(info.packedPosition);
        int childPos = ExpandableListView.getPackedPositionChild(info.packedPosition);

        if (type == 0) {

            switch (menuItemIndex) {
                case 0:
                    Intent i = new Intent(ActSignsManager.this, ActSignsAddNew.class);
                    ps_int_params.put("Type", selected_type);
                    ps_string_arr_params.put("Categories", cats);
                    ps_int_params.put("Selected_Item", groupPos);

                    if (IS_FREE_VERSION && MySigns.size() > 69)
                        Toast.makeText(ActSignsManager.this, getString(R.string.ruefully_you_cant_add_another_sign), Toast.LENGTH_LONG).show();
                    else startActivity(i);

                    break;
            }
        }
        if (type == 1) {
            int index = SignIndexAt(selected_type, groupPos, adapter.getChild(groupPos, childPos).toString());

            switch (menuItemIndex) {
                case 0:
                    //     Toast.makeText(sManager.this, "edit", 5000).show();
                    Intent i = new Intent(ActSignsManager.this, ActSignsAddNew.class);

                    ps_int_params.put("ID", MySigns.get(index).getID());
                    ps_string_params.put("Name", MySigns.get(index).getTitle());
                    ps_int_params.put("Type", MySigns.get(index).getType());
                    ps_int_params.put("Category", MySigns.get(index).getCategory());
                    ps_string_params.put("Note", MySigns.get(index).getNote());
                    ps_string_arr_params.put("Categories", cats);


                    startActivity(i);
                    break;
            }
        }

        return true;
    }

    // нажатие на элемент

    void newSignFunc() {
        String type = ps_string_params.get("Type");
        if (type.equals("Mind")) {
            cats = catsMind;
            selected_type = 0;
        }
        if (type.equals("Action")) {
            cats = catsAction;
            selected_type = 1;
        }
        if (type.equals("Form")) {
            cats = catsForm;
            selected_type = 2;
        }
        if (type.equals("Circumstances")) {
            cats = catsCircumstances;
            selected_type = 3;
        }

    }

    private void readSigns() {
        MySigns = new ArrayList<xSign>();

        Cursor c = ps_db.query(const_tbl_signs, null, null, null, null, null, null);
        if (c != null) {
            if (c.moveToFirst()) {
                do {
                    xSign iSingleSign = new xSign();
                    iSingleSign.setID(c.getInt(DBI_SIGNS_ID));
                    iSingleSign.setHash(c.getString(DBI_SIGNS_HASH));
                    iSingleSign.setTitle(c.getString(DBI_SIGNS_TITLE));
                    iSingleSign.setType(c.getInt(DBI_SIGNS_TYPE));
                    iSingleSign.setCategory(c.getInt(DBI_SIGNS_CATEGORY));
                    iSingleSign.setNote(c.getString(DBI_SIGNS_NOTE));
                    MySigns.add(iSingleSign);
                    Log.d("777", iSingleSign.getID() + "||| cat:" + iSingleSign.getCategory() + "||| type:" + iSingleSign.getType());
                } while (c.moveToNext());
                c.close();
            } else
                Log.d("777", "0 rows");
        }


    }


    private int SignIndexAt(int type, int category, String name) {
        boolean exist = false;
        int index = -1;
        for (int i = 0; i < this.MySigns.size(); i++) {
            if (this.MySigns.get(i).getTitle().equals(name) && this.MySigns.get(i).getCategory() == category && this.MySigns.get(i).getType() == type) {
                index = i;
                exist = true;
            }
        }
        if (exist) {
            return index;
        } else {
            return 999999;
        }
    }

    private boolean removeSign(int index) {
        ps_db.delete(const_tbl_signs, "id = " + MySigns.get(index).getID(), null);

        Toast.makeText(ActSignsManager.this, getString(R.string.messages_sign_removed), Toast.LENGTH_LONG).show();
        // Refresh main activity upon close of dialog box

        readSigns();
        expFiller();

        adapter.notifyDataSetChanged();
        return true;
    }

    private void expFiller() {
        ArrayList<String> tmp;
        ArrayList<ArrayList<String>> groups = new ArrayList<ArrayList<String>>();
        for (int i = 0; i < cats.length; i++) {
            tmp = new ArrayList<String>();
            for (xSign sign : MySigns) {
                if (sign.getCategory() == i && sign.getType() == selected_type)
                    tmp.add(sign.getTitle());
            }
            groups.add(tmp);
        }
        //Создаем адаптер и передаем context и список с данными
        adapter = new _sManagerExpAdapter(this, cats, groups);
        expListView.setAdapter(adapter);
    }

    @Override
    public void onResume() {
        super.onResume();
        cInitialization();
        showAds();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        cInitialization();
        showAds();
    }

    public class _sManagerExpAdapter extends BaseExpandableListAdapter {

        private ArrayList<ArrayList<String>> mGroups;
        private Context mContext;
        private String[] cats;

        public _sManagerExpAdapter(Context context, String[] categories, ArrayList<ArrayList<String>> groups) {
            mContext = context;
            mGroups = groups;
            cats = categories;
        }


        public String getGroupText(int groupPosition) {
            return cats[groupPosition];
        }

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

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

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

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

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

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

        @Override
        public boolean hasStableIds() {
            return true;
        }

        @Override
        public View getGroupView(int groupPosition, boolean isExpanded, View convertView,
                                 ViewGroup parent) {
            if (convertView == null) {
                LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                convertView = inflater.inflate(R.layout.s_exp_group_view, null);
            }

            if (isExpanded) {
                //Изменяем что-нибудь, если текущая Group раскрыта
            } else {
                //Изменяем что-нибудь, если текущая Group скрыта
            }

            TextView textGroup = (TextView) convertView.findViewById(R.id.textGroup);
            textGroup.setText(cats[groupPosition] + " [" + String.valueOf(this.getChildrenCount(groupPosition)) + "]");

            ImageView btnAddSigns = (ImageView) convertView.findViewById(R.id.sExp_BtnAdd);
            btnAddSigns.setFocusable(false);
            final int gPos = groupPosition;

            btnAddSigns.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent i = new Intent(ActSignsManager.this, ActSignsAddNew.class);
                    ps_int_params.put("Type", selected_type);
                    ps_string_arr_params.put("Categories", cats);
                    ps_int_params.put("Selected_Item", gPos);

                    if (IS_FREE_VERSION && MySigns.size() > 69)
                        Toast.makeText(ActSignsManager.this, getString(R.string.ruefully_you_cant_add_another_sign), Toast.LENGTH_LONG).show();
                    else startActivity(i);
                }
            });

            return convertView;

        }

        @Override
        public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
                                 View convertView, ViewGroup parent) {
            if (convertView == null) {
                LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                convertView = inflater.inflate(R.layout.s_exp_child_view, null);
            }

            TextView textChild = (TextView) convertView.findViewById(R.id.textChild);
            textChild.setText(mGroups.get(groupPosition).get(childPosition));

            final int index = SignIndexAt(selected_type, groupPosition, adapter.getChild(groupPosition, childPosition).toString());

            ImageView btnEditSign = (ImageView) convertView.findViewById(R.id.sExp_BtnEdit);
            btnEditSign.setFocusable(false);


            btnEditSign.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent i = new Intent(ActSignsManager.this, ActSignsAddNew.class);

                    ps_int_params.put("ID", MySigns.get(index).getID());
                    ps_string_params.put("Name", MySigns.get(index).getTitle());
                    ps_int_params.put("Type", MySigns.get(index).getType());
                    ps_int_params.put("Category", MySigns.get(index).getCategory());
                    ps_string_params.put("Note", MySigns.get(index).getNote());
                    ps_string_arr_params.put("Categories", cats);
                    startActivity(i);
                }
            });


            return convertView;
        }

        @Override
        public boolean isChildSelectable(int groupPosition, int childPosition) {
            return true;
        }
    }


}

Answer 1

我能够让它工作，但我得到的错误与你的略有不同。

当我尝试使用您的布局（减去我没有的资源）时，group_element.xml 和 child_element.xml 中的 ImageButtons 以某种方式捕获了整行中的 MotionEvents（当它们不应该)，就我而言，它与布局的扩展有关。

解决方案：我只是将两个ImageButton 用于两个ImageView，并为两个视图构建OnTouchListeners。如您所见，它在 Nexus 7 模拟器上运行。

因为我没有你的数据集，最重要的是适配器代码我不能肯定这会解决你的问题。

如果您有兴趣，我已经在 ExpandableListViews 上的 JournalDev 适配器示例的自定义版本上测试了您的 XML：

import java.util.HashMap;
import java.util.List;
import android.content.Context;
import android.graphics.Typeface;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomExpandableListAdapter extends BaseExpandableListAdapter {

    private Context context;
    private List<String> expandableListTitle;
    private HashMap<String, List<String>> expandableListDetail;

    public CustomExpandableListAdapter(Context context, List<String> expandableListTitle,
                                       HashMap<String, List<String>> expandableListDetail) {
        this.context = context;
        this.expandableListTitle = expandableListTitle;
        this.expandableListDetail = expandableListDetail;
    }

    @Override
    public Object getChild(int listPosition, int expandedListPosition) {
        return this.expandableListDetail.get(this.expandableListTitle.get(listPosition))
                .get(expandedListPosition);
    }

    @Override
    public long getChildId(int listPosition, int expandedListPosition) {
        return expandedListPosition;
    }

    @Override
    public View getChildView(int listPosition, final int expandedListPosition,
                             boolean isLastChild, View convertView, ViewGroup parent) {
        final String expandedListText = (String) getChild(listPosition, expandedListPosition);
        if (convertView == null) {

            //---------------------------------------------
            LayoutInflater layoutInflater = (LayoutInflater) this.context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            convertView = layoutInflater.inflate(R.layout.child_element, null);
        }
        TextView expandedListTextView = (TextView) convertView
                .findViewById(R.id.textChild);
        expandedListTextView.setText(expandedListText);

        ImageView editViewBtn = (ImageView)convertView.findViewById(R.id.sExp_BtnEdit);
        editViewBtn.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {

                // do stuff

                return false;
            }
        });


        return convertView;
    }

    @Override
    public int getChildrenCount(int listPosition) {
        return this.expandableListDetail.get(this.expandableListTitle.get(listPosition))
                .size();
    }

    @Override
    public Object getGroup(int listPosition) {
        return this.expandableListTitle.get(listPosition);
    }

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

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

    @Override
    public View getGroupView(int listPosition, boolean isExpanded,
                             View convertView, ViewGroup parent) {
        String listTitle = (String) getGroup(listPosition);
        if (convertView == null) {
            LayoutInflater layoutInflater = (LayoutInflater) this.context.
                    getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            convertView = layoutInflater.inflate(R.layout.group_element, null);
        }
        TextView listTitleTextView = (TextView) convertView
                .findViewById(R.id.textGroup);
        listTitleTextView.setTypeface(null, Typeface.BOLD);
        listTitleTextView.setText(listTitle);
        ImageView addV = (ImageView)convertView.findViewById(R.id.sExp_BtnAdd);
        addV.setVisibility(View.VISIBLE);

        addV.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {

                // do stuff

                return false;
            }
        });

        return convertView;
    }

    @Override
    public boolean hasStableIds() {
        return false;
    }

    @Override
    public boolean isChildSelectable(int listPosition, int expandedListPosition) {
        return true;
    }
}

虚拟数据生成器：

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

public class ExpandableListDataPump {
    public static HashMap<String, List<String>> getData() {
        HashMap<String, List<String>> expandableListDetail = new HashMap<String, List<String>>();

        List<String> ego = new ArrayList<String>();
        ego.add("dream 1");
        ego.add("dream 2");
        ego.add("dream 3");
        ego.add("dream 4");
        ego.add("dream 5");

        List<String> personalities = new ArrayList<String>();
        personalities.add("dream 1");
        personalities.add("dream 2");
        personalities.add("dream 3");
        personalities.add("dream 4");

        List<String> places = new ArrayList<String>();
        places.add("dream 1");
        places.add("dream 2");
        places.add("dream 3");
        places.add("dream 4");
        places.add("dream 5");

        expandableListDetail.put("Form of the ego", ego);
        expandableListDetail.put("Form of other personalities", personalities);
        expandableListDetail.put("Place's form", places);
        return expandableListDetail;
    }
}

主要活动：

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.Toast;

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

public class Main4Activity extends AppCompatActivity {


    ExpandableListView expandableListView;
    ExpandableListAdapter expandableListAdapter;
    List<String> expandableListTitle;
    HashMap<String, List<String>> expandableListDetail;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        expandableListView = (ExpandableListView) findViewById(R.id.sExpList);
        expandableListDetail = ExpandableListDataPump.getData();
        expandableListTitle = new ArrayList<>(expandableListDetail.keySet());
        expandableListAdapter = new CustomExpandableListAdapter(this, expandableListTitle, expandableListDetail);
        expandableListView.setAdapter(expandableListAdapter);
        expandableListView.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {

            @Override
            public void onGroupExpand(int groupPosition) {
                Toast.makeText(getApplicationContext(),
                        expandableListTitle.get(groupPosition) + " List Expanded.",
                        Toast.LENGTH_SHORT).show();
            }
        });

        expandableListView.setOnGroupCollapseListener(new ExpandableListView.OnGroupCollapseListener() {

            @Override
            public void onGroupCollapse(int groupPosition) {
                Toast.makeText(getApplicationContext(),
                        expandableListTitle.get(groupPosition) + " List Collapsed.",
                        Toast.LENGTH_SHORT).show();

            }
        });

        expandableListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
            @Override
            public boolean onChildClick(ExpandableListView parent, View v,
                                        int groupPosition, int childPosition, long id) {
                Toast.makeText(
                        getApplicationContext(),
                        expandableListTitle.get(groupPosition)
                                + " -> "
                                + expandableListDetail.get(
                                expandableListTitle.get(groupPosition)).get(
                                childPosition), Toast.LENGTH_SHORT
                ).show();
                return false;
            }
        });
    }
}

您的主 xml 略有更改，不要忘记从 ImageButton 切换到 ImageView： （我改了一些你没有分享的资源和维度）

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


    <ExpandableListView
        android:id="@+id/sExpList"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:groupIndicator="@null" />

    <!-- FOR PORTRAIT LAYOUTS !-->
    <FrameLayout
        android:id="@+id/adLayout"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|center_horizontal"
        android:layout_marginTop="5dp"
        android:baselineAligned="false"
        android:orientation="vertical"/>
</LinearLayout>

组 xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    >

    <TextView
        android:id="@+id/textGroup"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="17dp"
        android:layout_marginTop="2dp"
        android:layout_weight="7"
        android:textStyle="bold"
        android:textSize="13sp" />

    <ImageView

        android:id="@+id/sExp_BtnAdd"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:layout_gravity="center_vertical"
        android:contentDescription=""
        android:focusable="false"
        android:scaleType="centerCrop"
        android:src="@android:drawable/ic_input_add" />

</LinearLayout>

子 xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/textChild"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="?android:attr/expandableListPreferredItemPaddingLeft"
        android:layout_marginTop="2dp"
        android:textColor="@android:color/white"
        android:layout_weight="1"
        android:textSize="13sp" />

    <ImageView
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_marginEnd="?android:attr/expandableListPreferredItemPaddingLeft"
        android:id="@+id/sExp_BtnEdit"
        android:layout_gravity="center_vertical"
        android:src="@android:drawable/ic_menu_edit"
        android:scaleType="centerCrop"
        android:focusable="false"
        android:layout_marginRight="5dp" />

</LinearLayout>

呃……这篇文章有点长，希望对你有帮助！

Answer 2

您是否尝试过在两个列表项中设置根布局参数

android:layout_height="match_parent"

到

android:layout_height="wrap_content"

?

Answer 3

Android 是为多屏设计的，所以有时一个布局文件不能很好地支持某些屏幕。一个建议可能会对您有所帮助：

对原item的layout文件做一些调整，在tablet右边，然后保存并把调整后的文件放到对应的目录下，如下：

 res/layout/my_layout.xml              // layout for normal screen size ("default")
 res/layout-large/my_layout.xml        // layout for large screen size
 res/layout-xlarge/my_layout.xml       // layout for extra-large screen size
 res/layout-xlarge-land/my_layout.xml  // layout for extra-large in landscape orientation

而 xlarge 屏幕至少为 960dp x 720dp， 大屏幕至少为 640dp x 480dp， 普通屏幕至少为 470dp x 320dp， 小屏幕至少为 426dp x 320dp。

关于这个主题的官方文档在这里，https://developer.android.com/guide/practices/screens_support.html#qualifiers

我认为这是处理普通布局上的异常行为的更好解决方案。

Answer 4

嗯，我找到了答案，就是这样——你应该为布局显式设置背景，设置为 explist 还是根元素并不重要，必须设置它。

除非我在包含 explist 的活动布局中设置了背景，否则它不会开始与任何建议的解决方案一起使用。

有趣的问题 - 为什么会这样？！