Android 无法将自定义listSelector应用于ListView

我现在已经复习了几个SO答案

甚至遵循这一点（目前正在使用这种方法）

我甚至将

drawSelectorOnTop

设置为

true

但是，我无法使

列表选择器

工作。基本上，我已经束手无策了。我想这与我的列表项目的制作方式有关吧？以下是XML：

list_entry.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="5dp">

    <ImageButton android:id="@+id/contextMenuIcon"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_action_overflow"
        android:background="@null"/>

    <TextView android:id="@+id/noteTitle"
        android:layout_alignParentLeft="true"
        android:layout_toLeftOf="@id/contextMenuIcon"
        android:layout_alignBottom="@id/contextMenuIcon"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:layout_alignParentTop="true"
        android:textIsSelectable="false"
        android:ellipsize="end"
        android:singleLine="true"
        android:textSize="20sp"
        android:textColor="@android:color/black"/>

    <TextView android:id="@+id/noteCreationDate"
        android:layout_alignParentLeft="true"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/noteTitle" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textColor="#808080"/>

    <TextView android:id="@+id/notePrivacy"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/contextMenuIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textColor="#808080" />

</RelativeLayout>    

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <gradient android:endColor="#ffc579" android:startColor="#fb9d23" android:angle="90"></gradient>
</shape>  

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

    <gradient android:endColor="#f7ddb8" android:startColor="#f5c98c" android:angle="90"></gradient>

</shape>  

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

    <item android:state_pressed="true" android:drawable="@drawable/list_selector_pressed" />
    <item android:state_focused="true" android:drawable="@drawable/list_selector_focused" />
    <item android:drawable="@android:color/transparent" />

</selector>

list\u selector\u pressed.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="5dp">

    <ImageButton android:id="@+id/contextMenuIcon"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_action_overflow"
        android:background="@null"/>

    <TextView android:id="@+id/noteTitle"
        android:layout_alignParentLeft="true"
        android:layout_toLeftOf="@id/contextMenuIcon"
        android:layout_alignBottom="@id/contextMenuIcon"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:layout_alignParentTop="true"
        android:textIsSelectable="false"
        android:ellipsize="end"
        android:singleLine="true"
        android:textSize="20sp"
        android:textColor="@android:color/black"/>

    <TextView android:id="@+id/noteCreationDate"
        android:layout_alignParentLeft="true"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/noteTitle" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textColor="#808080"/>

    <TextView android:id="@+id/notePrivacy"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/contextMenuIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textColor="#808080" />

</RelativeLayout>    

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <gradient android:endColor="#ffc579" android:startColor="#fb9d23" android:angle="90"></gradient>
</shape>  

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

    <gradient android:endColor="#f7ddb8" android:startColor="#f5c98c" android:angle="90"></gradient>

</shape>  

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

    <item android:state_pressed="true" android:drawable="@drawable/list_selector_pressed" />
    <item android:state_focused="true" android:drawable="@drawable/list_selector_focused" />
    <item android:drawable="@android:color/transparent" />

</selector>

列表选择器聚焦.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="5dp">

    <ImageButton android:id="@+id/contextMenuIcon"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_action_overflow"
        android:background="@null"/>

    <TextView android:id="@+id/noteTitle"
        android:layout_alignParentLeft="true"
        android:layout_toLeftOf="@id/contextMenuIcon"
        android:layout_alignBottom="@id/contextMenuIcon"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:layout_alignParentTop="true"
        android:textIsSelectable="false"
        android:ellipsize="end"
        android:singleLine="true"
        android:textSize="20sp"
        android:textColor="@android:color/black"/>

    <TextView android:id="@+id/noteCreationDate"
        android:layout_alignParentLeft="true"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/noteTitle" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textColor="#808080"/>

    <TextView android:id="@+id/notePrivacy"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/contextMenuIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textColor="#808080" />

</RelativeLayout>    

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <gradient android:endColor="#ffc579" android:startColor="#fb9d23" android:angle="90"></gradient>
</shape>  

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

    <gradient android:endColor="#f7ddb8" android:startColor="#f5c98c" android:angle="90"></gradient>

</shape>  

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

    <item android:state_pressed="true" android:drawable="@drawable/list_selector_pressed" />
    <item android:state_focused="true" android:drawable="@drawable/list_selector_focused" />
    <item android:drawable="@android:color/transparent" />

</selector>

列表选择器.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="5dp">

    <ImageButton android:id="@+id/contextMenuIcon"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_action_overflow"
        android:background="@null"/>

    <TextView android:id="@+id/noteTitle"
        android:layout_alignParentLeft="true"
        android:layout_toLeftOf="@id/contextMenuIcon"
        android:layout_alignBottom="@id/contextMenuIcon"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:layout_alignParentTop="true"
        android:textIsSelectable="false"
        android:ellipsize="end"
        android:singleLine="true"
        android:textSize="20sp"
        android:textColor="@android:color/black"/>

    <TextView android:id="@+id/noteCreationDate"
        android:layout_alignParentLeft="true"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/noteTitle" 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textColor="#808080"/>

    <TextView android:id="@+id/notePrivacy"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/contextMenuIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="18sp"
        android:textColor="#808080" />

</RelativeLayout>    

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <gradient android:endColor="#ffc579" android:startColor="#fb9d23" android:angle="90"></gradient>
</shape>  

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

    <gradient android:endColor="#f7ddb8" android:startColor="#f5c98c" android:angle="90"></gradient>

</shape>  

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

    <item android:state_pressed="true" android:drawable="@drawable/list_selector_pressed" />
    <item android:state_focused="true" android:drawable="@drawable/list_selector_focused" />
    <item android:drawable="@android:color/transparent" />

</selector>

---

请告诉我如何使列表选择器工作

根据我的经验，要使列表选择器工作，必须使用CheckedTextView作为列表项的根元素

<?xml version="1.0" encoding="utf-8"?>
<!-- Added this view purposefully -->
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/text"
    android:layout_width="match_parent"
    android:layout_height="@dimen/_48dp"
    android:layout_centerVertical="true"
    android:background="@drawable/selector_liquidation"
    android:gravity="center_vertical|left"
    android:paddingBottom="@dimen/_15dp"
    android:paddingLeft="@dimen/_40dp"
    android:paddingRight="@dimen/_10dp"
    android:paddingTop="@dimen/_15dp"
    android:singleLine="true"
    android:textColor="@color/gray_999999"
    android:textSize="@dimen/font_18sp" />

---

mSelectedIndex是跟踪所选位置的整数。它将始终具有选定的索引。

您正在列表项中使用ImageButton。因此，当您单击该项目时，ImageButton将获得焦点

但在你们的情况下，你们把ImageButton放回原处

  android:background="@null"

它让你看不到焦点。如果删除此行，则可以看到问题

要从列表项获取焦点，可以在xml的根视图中使用此代码

android:descendantFocusability="blocksDescendants"   

---

我用xml创建了一个快速测试，它正常工作

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment()).commit();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    public class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container, false);

            ListView list = (ListView)rootView.findViewById(R.id.list);

            ArrayList<MyItem> listItem = genListItem(20);
            MyAdapter adapter = new MyAdapter(MainActivity.this, android.R.layout.simple_list_item_1, listItem);
            list.setAdapter(adapter);


            return rootView;
        }

        private ArrayList<MyItem> genListItem(int size) {
            ArrayList<MyItem> listItem = new ArrayList<MainActivity.MyItem>();
            for (int i = 0; i < size; i++) {
                MyItem item = new MyItem();
                item.setName("item " + i);
                listItem.add(item);
            }

            return listItem;
        }
    }

    public static class MyItem{
        String Name;
        /**
         * @return the name
         */
        public String getName() {
            return Name;
        }
        /**
         * @param name the name to set
         */
        public void setName(String name) {
            Name = name;
        }


    }

    public class MyAdapter extends ArrayAdapter<MyItem>{

        private LayoutInflater inflator;
        private Context mContext;
        public MyAdapter(Context context, int resource, List<MyItem> objects) {
            super(context, resource, objects);
            mContext = context;
            inflator = ((Activity) context).getLayoutInflater();
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {

            final ViewHolder holder;
            if (convertView == null) {
                convertView = inflator.inflate(R.layout.list_entry, null);
                holder = new ViewHolder();
                holder.Name = (TextView) convertView.findViewById(R.id.noteTitle);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }

            MyItem item = getItem(position);
            holder.Name.setText(item.getName());


            return convertView;
        }

        class ViewHolder {
            public TextView Name;
        }


    }

}

公共类MainActivity扩展了ActionBarActivity{
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
如果（savedInstanceState==null）{
getSupportFragmentManager（）.beginTransaction（）.add（R.id.container，新占位符片段（））.commit（）；
}
}
@凌驾
公共布尔onCreateOptions菜单（菜单）{
//为菜单充气；这会将项目添加到操作栏（如果存在）。
getMenuInflater（）.充气（R.menu.main，menu）；
返回true；
}
@凌驾
公共布尔值onOptionsItemSelected（菜单项项）{
//处理操作栏项目单击此处。操作栏将
//自动处理Home/Up按钮上的点击，只要
//在AndroidManifest.xml中指定父活动时。
int id=item.getItemId（）；
if（id==R.id.action\u设置）{
返回true；
}
返回super.onOptionsItemSelected（项目）；
}
/**
*包含简单视图的占位符片段。
*/
公共类占位符片段扩展了片段{
公共占位符片段（）{
}
@凌驾
CreateView上的公共视图（布局、充气机、视图组容器、捆绑包保存状态）{
视图根视图=充气机。充气（R.layout.fragment_main，容器，错误）；
ListView list=（ListView）rootView.findViewById（R.id.list）；
ArrayList listItem=genListItem（20）；
MyAdapter=新的MyAdapter（MainActivity.this，android.R.layout.simple\u list\u item\u 1，listItem）；
list.setAdapter（适配器）；
返回rootView；
}
私有ArrayList genListItem（整数大小）{
ArrayList listItem=新的ArrayList（）；
对于（int i=0；i

我不知道为什么，但随机试验和错误导致了我这样做：

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

    <item android:state_pressed="true" android:drawable="@color/translucent_50_grey" />
    <item android:state_pressed="false" android:drawable="@android:color/transparent" />

    <item android:state_focused="true" android:drawable="@android:color/transparent" />
    <item android:state_focused="false" android:drawable="@android:color/transparent" />

    <item android:drawable="@android:color/transparent" />
</selector> 

---

瞧！它正在工作。全屏和标题栏主题。

也发布选择器xml代码。定位如何？

CheckedTextView

将包含

RelativeLayout

？很抱歉，我无法理解你在说什么。因此，如果我删除

@null

背景并添加

子代焦点可用性

行，它会工作吗？>如果你不想在图像按钮中看到焦点，则无需删除@null背景。你能让它工作并发布截图吗？：）这件事我已经花了8个小时：）我明白了。关键是选择器没有出现：）在您使用“”的listitem_selector.xml中，但名称必须是“list_selector_Focused.xml”（带2个“s”）。你能检查一下这是否是个问题吗