Android 如何在RecyclerView中使用CardView上的OnClickListner?
我尝试这样做: 我的问题,当我点击我的Android 如何在RecyclerView中使用CardView上的OnClickListner?,android,android-recyclerview,android-cardview,Android,Android Recyclerview,Android Cardview,我尝试这样做: 我的问题,当我点击我的ImageView时,我的cardwiew被展开,但第n个cardwiew也被展开,它将采用我点击的展开的cardwiew。我不明白为什么我的onClick方法也应用于另一个cardwiew 我的适配器 public class CardsViewAdapter extends RecyclerView.Adapter<CardsViewAdapter.ViewHolder> { private Game[] mDataset;
ImageView
时,我的cardwiew
被展开,但第n个cardwiew
也被展开,它将采用我点击的展开的cardwiew
。我不明白为什么我的onClick
方法也应用于另一个cardwiew
我的适配器
public class CardsViewAdapter extends RecyclerView.Adapter<CardsViewAdapter.ViewHolder> {
private Game[] mDataset;
int rotationAngle = 0;
// Provide a reference to the views for each data item
// Complex data items may need more than one view per item, and
// you provide access to all the views for a data item in a view holder
public static class ViewHolder extends RecyclerView.ViewHolder {
// each data item is just a string in this case
public TextView mTextView;
public ImageView imageView;
public LinearLayout test2;
public TextView test3;
boolean isPopupVisible;
public ViewHolder(View v) {
super(v);
mTextView = (TextView) v.findViewById(R.id.text_cards);
imageView = (ImageView) v.findViewById(R.id.item_description_game_more);
test2 = (LinearLayout) v.findViewById(R.id.popup_layout);
test3 = (TextView) v.findViewById(R.id.test_view);
isPopupVisible = false;
}
}
// Provide a suitable constructor (depends on the kind of dataset)
public CardsViewAdapter(Game[] myDataset) {
mDataset = myDataset;
}
// Create new views (invoked by the layout manager)
@Override
public CardsViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.cards_resume_game, parent, false);
// set the view's size, margins, paddings and layout parameters
//...
ViewHolder vh = new ViewHolder(v);
return vh;
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
// - get element from your dataset at this position
// - replace the contents of the view with that element
//TODO : complete
final int pos = position;
holder.mTextView.setText(String.valueOf(mDataset[position].getId_game()));
holder.imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("POS","actual pos = "+pos);
holder.test3.setText("Position : "+pos);
// Perform action on click
if (holder.isPopupVisible) {
holder.isPopupVisible = false;
ObjectAnimator anim = ObjectAnimator.ofFloat(v, "rotation",rotationAngle, rotationAngle + 180);
anim.setDuration(500);
anim.start();
rotationAngle += 180;
rotationAngle = rotationAngle%360;
CardsAnimationHelper.collapse(holder.test2);
} else {
holder.isPopupVisible = true;
ObjectAnimator anim = ObjectAnimator.ofFloat(v, "rotation",rotationAngle, rotationAngle + 180);
anim.setDuration(500);
anim.start();
rotationAngle += 180;
rotationAngle = rotationAngle%360;
CardsAnimationHelper.expand(holder.test2);
}
}
});
}
// Return the size of your dataset (invoked by the layout manager)
@Override
public int getItemCount() {
return mDataset.length;
}
}
公共类CardsViewAdapter扩展了RecyclerView.Adapter{
私人游戏[]mDataset;
int rotationAngle=0;
//提供对每个数据项的视图的引用
//复杂数据项可能需要每个项有多个视图,并且
//您可以访问视图持有者中数据项的所有视图
公共静态类ViewHolder扩展了RecyclerView.ViewHolder{
//在本例中,每个数据项只是一个字符串
公共文本视图mTextView;
公共影像视图;
公共线路布局测试2;
公共文本视图测试3;
布尔是可观察的;
公共视图持有者(视图v){
超级(五);
mTextView=(TextView)v.findViewById(R.id.text_卡);
imageView=(imageView)v.findViewById(R.id.item\u description\u game\u more);
test2=(LinearLayout)v.findviewbyd(R.id.popup_布局);
test3=(TextView)v.findViewById(R.id.test\u视图);
isPopupVisible=false;
}
}
//提供合适的构造函数(取决于数据集的类型)
公共卡VIEWADAPTER(游戏[]myDataset){
mDataset=myDataset;
}
//创建新视图(由布局管理器调用)
@凌驾
公共卡VIEWADAPTER.ViewHolder onCreateViewHolder(视图组父级、,
int视图类型){
//创建新视图
视图v=LayoutInflater.from(parent.getContext())
.充气(R.layout.cards\u resume\u game,parent,false);
//设置视图的大小、边距、填充和布局参数
//...
视窗支架vh=新视窗支架(v);
返回vh;
}
//替换视图的内容(由布局管理器调用)
@凌驾
公共无效onBindViewHolder(最终ViewHolder,内部位置){
//-在此位置从数据集中获取元素
//-用该元素替换视图的内容
//TODO:完成
最终int pos=位置;
holder.mTextView.setText(String.valueOf(mDataset[position].getId_game());
holder.imageView.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图v){
日志d(“POS”,“实际POS=“+POS”);
holder.test3.setText(“位置:+pos”);
//单击后执行操作
if(持有人:isPopupVisible){
holder.isPopupVisible=假;
ObjectAnimator anim=ObjectAnimator.offload(v,“旋转”,旋转角度,旋转角度+180);
动画设定持续时间(500);
anim.start();
旋转角度+=180;
旋转角度=旋转角度%360;
CardsAnimationHelper.collapse(holder.test2);
}否则{
holder.isPopupVisible=true;
ObjectAnimator anim=ObjectAnimator.offload(v,“旋转”,旋转角度,旋转角度+180);
动画设定持续时间(500);
anim.start();
旋转角度+=180;
旋转角度=旋转角度%360;
展开(holder.test2);
}
}
});
}
//返回数据集的大小(由布局管理器调用)
@凌驾
public int getItemCount(){
返回mDataset.length;
}
}
发生这种情况的原因是列表中的第n项正在重新使用您展开的视图。视图持有者就是为了重用视图,而不是每次都创建它们
要修复此问题,请确保再次在BindViewHolder上检查视图的展开状态,而不是仅单击一次 将PopupVisible作为变量添加到游戏类中,并且仅当Game.getPopupVisible为true时,在onBindViewHolder中展开cardview:
public class CardsViewAdapter extends RecyclerView.Adapter<CardsViewAdapter.ViewHolder> {
private Game[] mDataset;
int rotationAngle = 0;
// Provide a reference to the views for each data item
// Complex data items may need more than one view per item, and
// you provide access to all the views for a data item in a view holder
public static class ViewHolder extends RecyclerView.ViewHolder {
// each data item is just a string in this case
public TextView mTextView;
public ImageView imageView;
public LinearLayout test2;
public TextView test3;
public ViewHolder(View v) {
super(v);
mTextView = (TextView) v.findViewById(R.id.text_cards);
imageView = (ImageView) v.findViewById(R.id.item_description_game_more);
test2 = (LinearLayout) v.findViewById(R.id.popup_layout);
test3 = (TextView) v.findViewById(R.id.test_view);
}
}
// Provide a suitable constructor (depends on the kind of dataset)
public CardsViewAdapter(Game[] myDataset) {
mDataset = myDataset;
}
// Create new views (invoked by the layout manager)
@Override
public CardsViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.cards_resume_game, parent, false);
// set the view's size, margins, paddings and layout parameters
//...
ViewHolder vh = new ViewHolder(v);
return vh;
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
// - get element from your dataset at this position
// - replace the contents of the view with that element
//TODO : complete
final int pos = position;
Game game=mDataset[position];
holder.mTextView.setText(String.valueOf(mDataset[position].getId_game()));
if (game.getPopupVisible()) {
ObjectAnimator anim = ObjectAnimator.ofFloat(v, "rotation",rotationAngle, rotationAngle + 180);
anim.setDuration(500);
anim.start();
rotationAngle += 180;
rotationAngle = rotationAngle%360;
CardsAnimationHelper.collapse(holder.test2);}
else....
holder.imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("POS","actual pos = "+pos);
holder.test3.setText("Position : "+pos);
// Perform action on click
if (game.getPopupVisible()) {
game.setPopupVisible(false);
ObjectAnimator anim = ObjectAnimator.ofFloat(v, "rotation",rotationAngle, rotationAngle + 180);
anim.setDuration(500);
anim.start();
rotationAngle += 180;
rotationAngle = rotationAngle%360;
CardsAnimationHelper.collapse(holder.test2);
} else {
game.setPopupVisible(true);
ObjectAnimator anim = ObjectAnimator.ofFloat(v, "rotation",rotationAngle, rotationAngle + 180);
anim.setDuration(500);
anim.start();
rotationAngle += 180;
rotationAngle = rotationAngle%360;
CardsAnimationHelper.expand(holder.test2);
}
}
});
}
// Return the size of your dataset (invoked by the layout manager)
@Override
public int getItemCount() {
return mDataset.length;
}
}
公共类CardsViewAdapter扩展了RecyclerView.Adapter{
私人游戏[]mDataset;
int rotationAngle=0;
//提供对每个数据项的视图的引用
//复杂数据项可能需要每个项有多个视图,并且
//您可以访问视图持有者中数据项的所有视图
公共静态类ViewHolder扩展了RecyclerView.ViewHolder{
//在本例中,每个数据项只是一个字符串
公共文本视图mTextView;
公共影像视图;
公共线路布局测试2;
公共文本视图测试3;
公共视图持有者(视图v){
超级(五);
mTextView=(TextView)v.findViewById(R.id.text_卡);
imageView=(imageView)v.findViewById(R.id.item\u description\u game\u more);
test2=(LinearLayout)v.findviewbyd(R.id.popup_布局);
test3=(TextView)v.findViewById(R.id.test\u视图);
}
}
//提供合适的构造函数(取决于数据集的类型)
公共卡VIEWADAPTER(游戏[]myDataset){
mDataset=myDataset;
}
//创建新视图(由布局管理器调用)
@凌驾
公共卡VIEWADAPTER.ViewHolder onCreateViewHolder(视图组父级、,
int视图类型){
//创建新视图
视图v=LayoutInflater.from(parent.getContext())
.充气(R.layout.cards\u resume\u game,parent,false);
//设置视图的大小、边距、填充和布局参数
//...
维霍尔德
public Class Game {
public int id;
public String description;
// Add an extra attribute to track the checked status
// By default, set the checked status to false
public boolean expanded = false;
}
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
final int pos = position;
holder.mTextView.setText(String.valueOf(mDataset[position].id));
// Set the expanded or collapsed mode here
if(mDataset[position].expanded) expandView(holder.test2);
else collapseView(holder.test2);
// Now set the onClickListener like this
holder.imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
holder.test3.setText("Position : "+pos);
// Animate the imageView here
animateImageView(holder.imageView);
// Toggle the expanded attribute value
if(mDataset[position].expanded) mDataset[position].expanded = false;
else mDataset[position].expanded = true;
// Now call notifyDataSetChanged to make the change to effect
refreshList();
}
});
}
// Extra functions inside your adapter class to improve readability
private void collapseView(View view) {
CardsAnimationHelper.collapse(view);
}
private void expandView(View view) {
CardsAnimationHelper.expand(view);
}
private void animateImageView(ImageView imageView) {
ObjectAnimator anim = ObjectAnimator.ofFloat(imageView, "rotation",rotationAngle, rotationAngle + 180);
anim.setDuration(animationDuration);
anim.start();
rotationAngle += 180;
rotationAngle = rotationAngle % 360;
}
long animationDuration = 500;
private void refreshList() {
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
notifyDataSetChanged();
}
}, animationDuration);
}