Android 如何在RecyclerView上正确突出显示所选项目?
我正在尝试使用Android 如何在RecyclerView上正确突出显示所选项目?,android,android-recyclerview,Android,Android Recyclerview,我正在尝试使用RecyclerView作为水平列表视图。我试图找出如何突出显示所选项目。当我单击其中一个项目时,它会被选中并正确高亮显示,但当我单击另一个项目时,第二个项目会与旧项目一起高亮显示 以下是我的onClick函数: @Override public void onClick(View view) { if(selectedListItem!=null){ Log.d(TAG, "selectedListItem " + getPosition() + " "
RecyclerView
作为水平列表视图
。我试图找出如何突出显示所选项目。当我单击其中一个项目时,它会被选中并正确高亮显示,但当我单击另一个项目时,第二个项目会与旧项目一起高亮显示
以下是我的onClick函数:
@Override
public void onClick(View view) {
if(selectedListItem!=null){
Log.d(TAG, "selectedListItem " + getPosition() + " " + item);
selectedListItem.setBackgroundColor(Color.RED);
}
Log.d(TAG, "onClick " + getPosition() + " " + item);
viewHolderListener.onIndexChanged(getPosition());
selectedPosition = getPosition();
view.setBackgroundColor(Color.CYAN);
selectedListItem = view;
}
这是BindViewHolder上的
@Override
public void onBindViewHolder(ViewHolder viewHolder, int position) {
viewHolder.setItem(fruitsData[position]);
if(selectedPosition == position)
viewHolder.itemView.setBackgroundColor(Color.CYAN);
else
viewHolder.itemView.setBackgroundColor(Color.RED);
}
如上所述,应在onCreateViewHolder中为ViewHolder设置侦听器。也就是说,下面的实现最初是针对多个选择的,但我在代码段中添加了一个hack来强制进行单个选择。(*1)
//所选项目的数组(整数索引)
选定的专用最终ArrayList=新ArrayList();
//进入视野的项目
@凌驾
公共无效onBindViewHolder(最终视图持有人,最终整型位置){
//每次项目进入视图时,都会检查其位置
//对照“选定”指数
如果(!selected.contains(位置)){
//未选择视图
holder.parent.setBackgroundColor(Color.LTGRAY);
}
其他的
//视图被选中
holder.parent.setBackgroundColor(颜色:青色);
}
//选择项目
@凌驾
仅长按公共布尔值(视图v){
//立即选择(设置颜色)。
v、 setBackgroundColor(颜色:青色);
// (*1)
//在这里强制单选。。。
if(selected.isEmpty()){
选中。添加(位置);/(完成-参见备注)
}否则{
int oldSelected=selected.get(0);
选中。清除();/(*1)…并单击此处。
选中。添加(职位);
//注意:我们不通知已选择项目
//因为这项工作是在这里完成的,我们将
//已取消选择项目的通知。
notifyItemChanged(已选择旧项);
}
返回false;
}
查看我的解决方案。我想您应该在holder中设置所选位置,并将其作为视图标记传递。
应该在onCreateViewHolder(…)方法中设置视图。还可以在正确的位置设置视图的侦听器,例如OnClickListener或LongClickListener
请看下面的例子并阅读代码注释
public class MyListAdapter extends RecyclerView.Adapter<MyListAdapter.ViewHolder> {
//Here is current selection position
private int mSelectedPosition = 0;
private OnMyListItemClick mOnMainMenuClickListener = OnMyListItemClick.NULL;
...
// constructor, method which allow to set list yourObjectList
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//here you prepare your view
// inflate it
// set listener for it
final ViewHolder result = new ViewHolder(view);
final View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.your_view_layout, parent, false);
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//here you set your current position from holder of clicked view
mSelectedPosition = result.getAdapterPosition();
//here you pass object from your list - item value which you clicked
mOnMainMenuClickListener.onMyListItemClick(yourObjectList.get(mSelectedPosition));
//here you inform view that something was change - view will be invalidated
notifyDataSetChanged();
}
});
return result;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
final YourObject yourObject = yourObjectList.get(position);
holder.bind(yourObject);
if(mSelectedPosition == position)
holder.itemView.setBackgroundColor(Color.CYAN);
else
holder.itemView.setBackgroundColor(Color.RED);
}
// you can create your own listener which you set for adapter
public void setOnMainMenuClickListener(OnMyListItemClick onMyListItemClick) {
mOnMainMenuClickListener = onMyListItemClick == null ? OnMyListItemClick.NULL : onMyListItemClick;
}
static class ViewHolder extends RecyclerView.ViewHolder {
ViewHolder(View view) {
super(view);
}
private void bind(YourObject object){
//bind view with yourObject
}
}
public interface OnMyListItemClick {
OnMyListItemClick NULL = new OnMyListItemClick() {
@Override
public void onMyListItemClick(YourObject item) {
}
};
void onMyListItemClick(YourObject item);
}
}
公共类MyListAdapter扩展了RecyclerView.Adapter{
//这是当前的选择位置
private int mSelectedPosition=0;
私有onmylistictemclick mOnMainMenuClickListener=onmylistictemclick.NULL;
...
//构造函数,该方法允许设置list yourObjectList
@凌驾
public ViewHolder onCreateViewHolder(视图组父级,int-viewType){
//在这里你准备好你的观点
//充气
//为它设置侦听器
最终ViewHolder结果=新的ViewHolder(视图);
最终视图=LayoutInflater.from(parent.getContext()).flate(R.layout.your\u View\u layout,parent,false);
view.setOnClickListener(新的view.OnClickListener(){
@凌驾
公共void onClick(视图){
//在这里,您可以从单击视图的持有者设置当前位置
mSelectedPosition=result.getAdapterPosition();
//在这里,您从单击的列表项值传递对象
mOnMainMenuClickListener.onMyListItemClick(yourObjectList.get(mSelectedPosition));
//在这里,您通知视图某些内容已更改-视图将无效
notifyDataSetChanged();
}
});
返回结果;
}
@凌驾
公共无效onBindViewHolder(ViewHolder,int位置){
final YourObject YourObject=yourObjectList.get(位置);
绑定(你的对象);
如果(mSelectedPosition==位置)
holder.itemView.setBackgroundColor(颜色为青色);
其他的
holder.itemView.setBackgroundColor(颜色:红色);
}
//您可以为适配器创建自己的侦听器
public void setOnMainMenuClickListener(OnMyListItemClick OnMyListItemClick){
mOnMainMenuClickListener=onmylistictemclick==null?onmylistictemclick.null:onmylistictemclick;
}
静态类ViewHolder扩展了RecyclerView.ViewHolder{
视图保持器(视图){
超级(视图);
}
私有void绑定(YourObject){
//将视图与对象绑定
}
}
MyListItemClick上的公共界面{
onmylistictemclick NULL=新建onmylistictemclick(){
@凌驾
MyListItemClick(您的对象项)上的公共无效{
}
};
在mylistitemclick(您的对象项)上作废;
}
}
我编写了一个基本适配器类,用RecyclerView自动处理项目选择。只需从中派生适配器,并使用可绘制的状态列表和选中的状态,就像使用列表视图一样
我对此有一些想法,但代码如下:
public abstract class TrackSelectionAdapter<VH extends TrackSelectionAdapter.ViewHolder> extends RecyclerView.Adapter<VH> {
// Start with first item selected
private int focusedItem = 0;
@Override
public void onAttachedToRecyclerView(final RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
// Handle key up and key down and attempt to move selection
recyclerView.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
RecyclerView.LayoutManager lm = recyclerView.getLayoutManager();
// Return false if scrolled to the bounds and allow focus to move off the list
if (event.getAction() == KeyEvent.ACTION_DOWN) {
if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
return tryMoveSelection(lm, 1);
} else if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
return tryMoveSelection(lm, -1);
}
}
return false;
}
});
}
private boolean tryMoveSelection(RecyclerView.LayoutManager lm, int direction) {
int tryFocusItem = focusedItem + direction;
// If still within valid bounds, move the selection, notify to redraw, and scroll
if (tryFocusItem >= 0 && tryFocusItem < getItemCount()) {
notifyItemChanged(focusedItem);
focusedItem = tryFocusItem;
notifyItemChanged(focusedItem);
lm.scrollToPosition(focusedItem);
return true;
}
return false;
}
@Override
public void onBindViewHolder(VH viewHolder, int i) {
// Set selected state; use a state list drawable to style the view
viewHolder.itemView.setSelected(focusedItem == i);
}
public class ViewHolder extends RecyclerView.ViewHolder {
public ViewHolder(View itemView) {
super(itemView);
// Handle item click and set the selection
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Redraw the old selection and the new
notifyItemChanged(focusedItem);
focusedItem = getLayoutPosition();
notifyItemChanged(focusedItem);
}
});
}
}
}
公共抽象类TrackSelectionAdapter扩展了RecyclerView.Adapter{
//从选定的第一项开始
私有int focusedItem=0;
@凌驾
附加ToRecyclerView(最终回收视图回收视图)上的公共空间{
super.onAttachedToRecyclerView(recyclerView);
//处理向上键和向下键,并尝试移动所选内容
recyclerView.setOnKeyListener(新视图.OnKeyListener(){
@凌驾
公共布尔onKey(视图v、int keyCode、KeyEvent事件){
RecyclerView.LayoutManager lm=RecyclerView.getLayoutManager();
//如果滚动到边界并允许焦点移出列表,则返回false
if(event.getAction()==KeyEvent.ACTION\u向下){
if(keyCode==KeyEvent.keyCode\u DPAD\u DOWN){
返回选举(lm,1);
}else if(keyCode==KeyEvent.keyCode\u DPAD\u UP){
public abstract class TrackSelectionAdapter<VH extends TrackSelectionAdapter.ViewHolder> extends RecyclerView.Adapter<VH> {
// Start with first item selected
private int focusedItem = 0;
@Override
public void onAttachedToRecyclerView(final RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
// Handle key up and key down and attempt to move selection
recyclerView.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
RecyclerView.LayoutManager lm = recyclerView.getLayoutManager();
// Return false if scrolled to the bounds and allow focus to move off the list
if (event.getAction() == KeyEvent.ACTION_DOWN) {
if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
return tryMoveSelection(lm, 1);
} else if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
return tryMoveSelection(lm, -1);
}
}
return false;
}
});
}
private boolean tryMoveSelection(RecyclerView.LayoutManager lm, int direction) {
int tryFocusItem = focusedItem + direction;
// If still within valid bounds, move the selection, notify to redraw, and scroll
if (tryFocusItem >= 0 && tryFocusItem < getItemCount()) {
notifyItemChanged(focusedItem);
focusedItem = tryFocusItem;
notifyItemChanged(focusedItem);
lm.scrollToPosition(focusedItem);
return true;
}
return false;
}
@Override
public void onBindViewHolder(VH viewHolder, int i) {
// Set selected state; use a state list drawable to style the view
viewHolder.itemView.setSelected(focusedItem == i);
}
public class ViewHolder extends RecyclerView.ViewHolder {
public ViewHolder(View itemView) {
super(itemView);
// Handle item click and set the selection
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Redraw the old selection and the new
notifyItemChanged(focusedItem);
focusedItem = getLayoutPosition();
notifyItemChanged(focusedItem);
}
});
}
}
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, int position) {
viewHolder.itemView.setSelected(selectedPos == position);
}
@Override
public void onClick(View view) {
notifyItemChanged(selectedPos);
selectedPos = getLayoutPosition();
notifyItemChanged(selectedPos);
}
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/pressed_color" android:state_pressed="true"/>
<item android:drawable="@color/selected_color" android:state_selected="true"/>
<item android:drawable="@color/focused_color" android:state_focused="true"/>
</selector>
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape>
<solid android:color="@color/blue" />
</shape>
</item>
<item android:state_pressed="false">
<shape>
<solid android:color="@android:color/transparent" />
</shape>
</item>
</selector>
android:background="@drawable/selector"
public interface ItemTouchHelperViewHolder {
/**
* Called when the {@link ItemTouchHelper} first registers an item as being moved or swiped.
* Implementations should update the item view to indicate it's active state.
*/
void onItemSelected();
/**
* Called when the {@link ItemTouchHelper} has completed the move or swipe, and the active item
* state should be cleared.
*/
void onItemClear();
}
public static class ItemViewHolder extends RecyclerView.ViewHolder implements
ItemTouchHelperViewHolder {
public LinearLayout container;
public PositionCardView content;
public ItemViewHolder(View itemView) {
super(itemView);
container = (LinearLayout) itemView;
content = (PositionCardView) itemView.findViewById(R.id.content);
}
@Override
public void onItemSelected() {
/**
* Here change of item
*/
container.setBackgroundColor(Color.LTGRAY);
}
@Override
public void onItemClear() {
/**
* Here change of item
*/
container.setBackgroundColor(Color.WHITE);
}
}
public class ItemTouchHelperCallback extends ItemTouchHelper.Callback {
private final ItemTouchHelperAdapter mAdapter;
public ItemTouchHelperCallback(ItemTouchHelperAdapter adapter) {
this.mAdapter = adapter;
}
@Override
public boolean isLongPressDragEnabled() {
return true;
}
@Override
public boolean isItemViewSwipeEnabled() {
return true;
}
@Override
public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN;
int swipeFlags = ItemTouchHelper.END;
return makeMovementFlags(dragFlags, swipeFlags);
}
@Override
public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
...
}
@Override
public void onSwiped(final RecyclerView.ViewHolder viewHolder, int direction) {
...
}
@Override
public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {
if (actionState != ItemTouchHelper.ACTION_STATE_IDLE) {
if (viewHolder instanceof ItemTouchHelperViewHolder) {
ItemTouchHelperViewHolder itemViewHolder =
(ItemTouchHelperViewHolder) viewHolder;
itemViewHolder.onItemSelected();
}
}
super.onSelectedChanged(viewHolder, actionState);
}
@Override
public void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
super.clearView(recyclerView, viewHolder);
if (viewHolder instanceof ItemTouchHelperViewHolder) {
ItemTouchHelperViewHolder itemViewHolder =
(ItemTouchHelperViewHolder) viewHolder;
itemViewHolder.onItemClear();
}
}
}
mAdapter = new BuyItemsRecyclerListAdapter(MainActivity.this, positionsList, new ArrayList<BuyItem>());
positionsList.setAdapter(mAdapter);
positionsList.setLayoutManager(new LinearLayoutManager(this));
ItemTouchHelper.Callback callback = new ItemTouchHelperCallback(mAdapter);
mItemTouchHelper = new ItemTouchHelper(callback);
mItemTouchHelper.attachToRecyclerView(positionsList);
int selected_position = 0; // You have to set this globally in the Adapter class
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Item item = items.get(position);
// Here I am just highlighting the background
holder.itemView.setBackgroundColor(selected_position == position ? Color.GREEN : Color.TRANSPARENT);
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public ViewHolder(View itemView) {
super(itemView);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// Below line is just like a safety check, because sometimes holder could be null,
// in that case, getAdapterPosition() will return RecyclerView.NO_POSITION
if (getAdapterPosition() == RecyclerView.NO_POSITION) return;
// Updating old as well as new positions
notifyItemChanged(selected_position);
selected_position = getAdapterPosition();
notifyItemChanged(selected_position);
// Do your another stuff for your onClick
}
}
android:clickable="true"
android:focusableInTouchMode="true"
android:background="?attr/selectableItemBackgroundBorderless"
android:clickable="true"
android:focusableInTouchMode="true"
android:foreground="?attr/selectableItemBackgroundBorderless"
@Override
public void onClick(View v) {
//ur other code here
v.setPressed(true);
}
private final ArrayList<Integer> seleccionados = new ArrayList<>();
@Override
public void onBindViewHolder(final ViewHolder viewHolder, final int i) {
viewHolder.san.setText(android_versions.get(i).getAndroid_version_name());
if (!seleccionados.contains(i)){
viewHolder.inside.setCardBackgroundColor(Color.LTGRAY);
}
else {
viewHolder.inside.setCardBackgroundColor(Color.BLUE);
}
viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (seleccionados.contains(i)){
seleccionados.remove(seleccionados.indexOf(i));
viewHolder.inside.setCardBackgroundColor(Color.LTGRAY);
} else {
seleccionados.add(i);
viewHolder.inside.setCardBackgroundColor(Color.BLUE);
}
}
});
}
@Override
public void onBindViewHolder(final OrdersHolder holder, final int position) {
final Order order = orders.get(position);
holder.bind(order);
if(selected_position == position){
//changes background color of selected item in RecyclerView
holder.itemView.setBackgroundColor(Color.GREEN);
} else {
holder.itemView.setBackgroundColor(Color.TRANSPARENT);
//this updated an order property by status in DB
order.setProductStatus("0");
}
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//status switch and DB update
if (order.getProductStatus().equals("0")) {
order.setProductStatus("1");
notifyItemChanged(selected_position);
selected_position = position;
notifyItemChanged(selected_position);
} else {
if (order.getProductStatus().equals("1")){
//calls for interface implementation in
//MainActivity which opens a new fragment with
//selected item details
listener.onOrderSelected(order);
}
}
}
});
}
b.setIsSelected(true);
android:background="@{ isSelected ? @color/{color selected} : @color/{color not selected} }"
public class RV_Adapter extends RecyclerView.Adapter<RV_Adapter.ViewHolder> {
public ArrayList<String> list;
boolean[] checkBoxState;
MainActivity mainActivity;
MyFragment myFragment;
View firstview;
private Context context;
FrameLayout framelayout;
public RV_Adapter() {
}
public RV_Adapter(Context context, MyFragment m, ArrayList<String> list ) {
this.list = list;
myFragment = m;
this.context = context;
mainActivity = (MainActivity) context;
checkBoxState = new boolean[list.size()];
// relativeLayoutState = new boolean[list.size()];
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView textView;
public CheckBox checkBox;
RelativeLayout relativeLayout;
MainActivity mainActivity;
MyFragment myFragment;
public ViewHolder(View v,MainActivity mainActivity,MyFragment m) {
super(v);
textView = (TextView) v.findViewById(R.id.tv_foodname);
/**/
checkBox= (CheckBox) v.findViewById(R.id.checkBox);
relativeLayout = (RelativeLayout)v.findViewById(R.id.relativelayout);
this.mainActivity = mainActivity;
this.myFragment = m;
framelayout = (FrameLayout) v.findViewById(R.id.framelayout);
framelayout.setOnLongClickListener(m);
}
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
firstview = inflater.inflate(R.layout.row, parent, false);
return new ViewHolder(firstview,mainActivity, myFragment);
}
@Override
public void onBindViewHolder( final ViewHolder holder, final int position) {
holder.textView.setText(list.get(position));
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
// When action mode is active, checkboxes are displayed on each row, handle views(move icons) on each row are disappered.
if(!myFragment.is_in_action_mode)
{
holder.checkBox.setVisibility(View.GONE);
}
else
{
holder.checkBox.setVisibility(View.VISIBLE);
holder.checkBox.setChecked(false);
}
holder.checkBox.setTag(position);
holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if(compoundButton.isPressed()) // ekrandan kaybolan checkbox'lar otomatik olarak state degistiriyordu ve bu listener method cagiriliyordu, bunu onlemek icin isPressed() method'u ile kullanici mi basmis diye kontrol ediyorum.
{
int getPosition = (Integer) compoundButton.getTag(); // Here we get the position that we have set for the checkbox using setTag.
checkBoxState[getPosition] = compoundButton.isChecked(); // Set the value of checkbox to maintain its state.
//relativeLayoutState[getPosition] = compoundButton.isChecked();
if(checkBoxState[getPosition] && getPosition == position )
holder.relativeLayout.setBackgroundResource(R.color.food_selected); /** Change background color of the selected items in list view **/
else
holder.relativeLayout.setBackgroundResource(R.color.food_unselected); /** Change background color of the selected items in list view **/
myFragment.prepareselection(compoundButton, getPosition, holder.relativeLayout);
}
}
});
holder.checkBox.setChecked(checkBoxState[position]);
if(checkBoxState[position] )
holder.relativeLayout.setBackgroundResource(R.color.food_selected); /** Change background color of the selected items in list view **/
else
holder.relativeLayout.setBackgroundResource(R.color.food_unselected);
}
@Override
public int getItemCount() {
return list.size();
}
public void updateList(ArrayList<String> newList){
this.list = newList;
checkBoxState = new boolean[list.size()+1];
}
public void resetCheckBoxState(){
checkBoxState = null;
checkBoxState = new boolean[list.size()];
}
}
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/Green_10" android:state_activated="true" />
<item android:drawable="@color/Transparent" />
</selector>
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:background="@drawable/selector_attentions_list_item"
android:layout_width="match_parent"
android:layout_height="64dp">
@Suppress("UNCHECKED_CAST")
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
fun bindItems(item: T) {
initItemView(itemView, item)
itemView.tag = item
if (isClickable) {
itemView.setOnClickListener(onClickListener)
}
}
}
fun onItemClicked(view: View){
view.isActivated = true
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, int position) {
viewHolder.itemView.setSelected(selectedPos == position);
}
@Override
public void onClick(View view) {
notifyItemChanged(selectedPos);
selectedPos = getLayoutPosition();
notifyItemChanged(selectedPos);
}
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/pressed_color" android:state_pressed="true"/>
<item android:drawable="@color/selected_color" android:state_selected="true"/>
<item android:drawable="@color/focused_color" android:state_focused="true"/>
<item android:drawable="@android:color/transparent" android:state_selected="false"/>
</selector>