列表视图中的选定项目未突出显示

时间:2014-06-07 07:48:09

标签: android

我正在尝试实现MultiChoiceModeListener以使用我的片段(v4支持库)中的上下文操作栏。但是我在显示列表视图中的项目已被选中时遇到问题。我期望的是所选项目会突出显示。实际情况是,仅显示操作栏,指示已选择的项目数,但没有指示选择了哪个项目。

    if (Utils.hasHoneycomb()) {
        Log.d("faizal","has honeycomb");

        //Enable selection of multiple chat messages
        lv_chatMessages.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);

        //Handle Action mode events
        lv_chatMessages
                .setMultiChoiceModeListener(new MultiChoiceModeListener() {

                    @Override
                    public boolean onActionItemClicked(ActionMode arg0,
                            MenuItem arg1) {
                        // TODO Auto-generated method stub
                        return false;
                    }

                    @Override
                    public boolean onCreateActionMode(ActionMode mode,
                            Menu menu) {
                        Log.d("faizal","oncreateactionmode");
                        MenuInflater inflater = mode.getMenuInflater();
                        inflater.inflate(R.menu.chatsession_contextmenu, menu);
                        return true;
                    }

                    @Override
                    public void onDestroyActionMode(ActionMode arg0) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public boolean onPrepareActionMode(ActionMode arg0,
                            Menu arg1) {
                        // TODO Auto-generated method stub
                        return false;
                    }

                    @Override
                    public void onItemCheckedStateChanged(ActionMode mode,
                            int position, long id, boolean checked) {
                        Log.d("faizal","onItemCheckedStateChanged : " + position);
                        mode.setTitle(lv_chatMessages.getCheckedItemCount() + " selected");

                    }

                });
    }

我尝试在listview.setSelection(position)中使用onItemCheckedStateChanged(),但它没有任何区别。

我还尝试使用我的项目布局文件中的行选择器手动更改所选项目的背景颜色,如下所示,但这也没有任何区别:

chat_list_item.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="wrap_content">

    <LinearLayout
        android:id ="@+id/wrapper"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/rowselector">

        <TextView
            android:id="@+id/txt_chat"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:layout_gravity="center"
            android:focusable="false"
            />

        </LinearLayout>
</LinearLayout>

rowselector.xml:

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

    <item android:state_selected="true" android:drawable="@color/yellow" />

</selector>

那么有没有办法说明哪些项目被选中了?

2 个答案:

答案 0 :(得分:1)

state_activated中使用state_selected代替rowselector.xml

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

    <item android:state_activated="true" android:drawable="@color/yellow" />

</selector>

感谢@Luksprog

答案 1 :(得分:0)

将您的选择器更改为此

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

    <item android:drawable="@drawable/button_bg_normal" android:state_selected="true"></item>
    <item android:drawable="@drawable/button_bg_pressed" android:state_pressed="true"></item>
    <item android:drawable="@drawable/button_bg_normal"></item>

</selector>