滚动时，两个复选框处于recyclerview更改状态
修改
通过删除两行来解决问题
holder.checkbox.setChecked(mListenerList.get(position).isSelected());
holder.checkbox.setChecked(mListenerList.get(position).isSelected2());
并通过添加
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getItemViewType(int position) {
return position;
}
我不为将来的开发人员编辑原始代码。
编辑之前的主要问题从这里开始
我正在开发幻想板球应用程序，从11位玩家的名单中选择队长和副队长。
我正在使用一个复选框来选择队长和副队长。
复选框的选择与我的代码配合得很好，但是问题是当我选择第一个玩家作为队长（C），第二个玩家作为副队长（VC），然后滚动列表时，复选框的状态正在改变，并且显示其他选中的玩家。
那么有什么正确的方法做那件事吗？
我已经尝试了多种方法，当有一个复选框时它们仍在工作，但就我而言，只有两个复选框，并且只能从列表中选择一个。
为清楚起见，请参阅底部的屏幕截图。
适配器类
public class AdapterFinalTeamList extends RecyclerView.Adapter<AdapterFinalTeamList.MyViewHolder> {
private List<BeanDBTeam> mListenerList;
Context mContext;
private CheckBox lastChecked = null;
private int lastCheckedPos = 0;
private CheckBox lastChecked2 = null;
private int lastCheckedPos2 = 0;
private RadioButton lastCheckedRB = null;
private RadioButton lastCheckedRB1 = null;
TextView PreviousCaptain = null;
TextView PreviousVC = null;
public AdapterFinalTeamList(List<BeanDBTeam> mListenerList, Context context) {
mContext = context;
this.mListenerList = mListenerList;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
TextView tv_PlayerName,tv_SelectCaptain,tv_SelectViceCaptain, tv_PlayerTeamName, tv_PlayerPoints,tv_TeamNumber;
ImageView im_PlayerImage,im_onetwox;
CheckBox checkbox,checkbox2;
RadioGroup radiogroup;
RadioButton radio,radio2;
public MyViewHolder(View view) {
super(view);
tv_PlayerName =view.findViewById(R.id.tv_PlayerName);
tv_PlayerTeamName = view.findViewById(R.id.tv_PlayerTeamName);
tv_PlayerPoints = view.findViewById(R.id.tv_PlayerPoints);
im_PlayerImage = view.findViewById(R.id.im_PlayerImage);
im_onetwox = view.findViewById(R.id.im_onetwox);
tv_TeamNumber = view.findViewById(R.id.tv_TeamNumber);
tv_SelectViceCaptain = view.findViewById(R.id.tv_SelectViceCaptain);
tv_SelectCaptain= view.findViewById(R.id.tv_SelectCaptain);
checkbox= view.findViewById(R.id.checkbox);
checkbox2= view.findViewById(R.id.checkbox2);
radiogroup= view.findViewById(R.id.radiogroup);
radio= view.findViewById(R.id.radio);
radio2= view.findViewById(R.id.radio2);
}
}
@Override
public int getItemCount() {
return mListenerList.size();
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.adapter_final_list, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
String id = mListenerList.get(position).getMatchId();
String arrayList = (mListenerList.get(position).getPlayerData());
try {
JSONObject job = new JSONObject(arrayList);
String PlayerName = job.getString("name");
String PlayerImage = job.getString("image");
String PlayerPoints = job.getString("player_points");
String PlayerCredit = job.getString("credit_points");
String TeamShortName = job.getString("team_short_name");
String team_number = job.getString("team_number");
String player_shortname = job.getString("player_shortname");
holder.tv_TeamNumber.setText(team_number);
// PlayerTeam= job.getString("short_name");
holder.tv_PlayerName.setText(PlayerName);
holder.tv_PlayerPoints.setText(PlayerPoints);
holder.tv_PlayerTeamName.setText(TeamShortName);
Glide.with(activity).load(Config.PLAYERIMAGE + PlayerImage)
.crossFade()
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(holder.im_PlayerImage);
} catch (JSONException e) {
e.printStackTrace();
}
holder.checkbox.setChecked(mListenerList.get(position).isSelected());
holder.checkbox.setTag(new Integer(position));
holder.checkbox.setChecked(mListenerList.get(position).isSelected2());
holder.checkbox2.setTag(new Integer(position));
holder.checkbox.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
int clickedPos = ((Integer) cb.getTag()).intValue();
holder.checkbox2.setChecked(false);
if (cb.isChecked()) {
if (lastChecked != null) {
mListenerList.get(lastCheckedPos).setSelected(false);
lastChecked.setChecked(false);
}
else if (clickedPos==position){
lastCheckedPos = clickedPos;
lastChecked = cb;
lastChecked.setChecked(true);
}
lastCheckedPos = clickedPos;
lastChecked = cb;
} else
lastChecked = null;
try {
lastChecked.setChecked(true);
}
catch (Exception e){
e.printStackTrace();
}
mListenerList.get(clickedPos).setSelected(cb.isChecked());
CaptainId = mListenerList.get(position).getPlayerId();
}
});
holder.checkbox2.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
int clickedPos = ((Integer) cb.getTag()).intValue();
holder.checkbox.setChecked(false);
if (cb.isChecked()) {
if (lastChecked2 != null) {
lastChecked2.setChecked(false);
mListenerList.get(lastCheckedPos2).setSelected(false);
}
else if (clickedPos==position){
lastChecked2 = cb;
lastCheckedPos2 = clickedPos;
lastChecked2.setChecked(true);
}
lastChecked2 = cb;
lastCheckedPos2 = clickedPos;
} else
lastChecked2 = null;
try{
lastChecked2.setChecked(true);
}
catch (Exception e){
e.printStackTrace();
}
mListenerList.get(clickedPos).setSelected2(cb.isChecked());
ViceCaptainId = mListenerList.get(position).getPlayerId();
}
});
}
}
adapter_final_list.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res /android"
android:layout_width="match_parent"
android:background="@color/white"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:padding="5dp"
android:id="@+id/RL_PlayerListMain"
android:elevation="0dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/tv_TeamNumber"
android:visibility="invisible"/>
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:src="@drawable/logo"
android:layout_centerVertical="true"
android:id="@+id/im_PlayerImage"/>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:id="@+id/RL_Name"
android:layout_toRightOf="@+id/im_PlayerImage"
android:layout_marginLeft="10dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Player Name"
android:id="@+id/tv_PlayerName"
android:textColor="#1e1e1e"
/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center"
android:layout_below="@+id/tv_PlayerName">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="IND"
android:layout_gravity="center"
android:layout_marginRight="5dp"
android:id="@+id/tv_PlayerTeamName"
android:textColor="#1e1e1e"
/>
<View
android:layout_width="1dp"
android:layout_height="10dp"
android:layout_gravity="center"
android:background="#8e8e8e"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="55 Points"
android:layout_gravity="center"
android:id="@+id/tv_PlayerPoints"
android:textColor="#8e8e8e"
android:layout_marginLeft="5dp"
/>
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:id="@+id/RL_Credit"
android:layout_alignParentRight="true">
<TextView
android:layout_width="40dp"
android:layout_height="40dp"
android:text="C"
android:padding="10dp"
android:textAlignment="center"
android:gravity="center"
android:visibility="gone"
android:layout_centerVertical="true"
android:background="@drawable/circle_captain_vc_back"
android:id="@+id/tv_SelectCaptain"
android:textColor="#1e1e1e"
android:layout_marginLeft="10dp"
/>
<CheckBox
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_toRightOf="@+id/tv_SelectViceCaptain"
android:layout_centerVertical="true"
android:visibility="visible"
android:text="C"
android:textColor="#1e1e1e"
android:gravity="center"
android:button="@android:color/transparent"
android:background="@drawable/radio_selector"
android:id="@+id/checkbox"/>
<CheckBox
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_toRightOf="@+id/checkbox"
android:layout_centerVertical="true"
android:visibility="visible"
android:text="VC"
android:layout_marginLeft="5dp"
android:textColor="#1e1e1e"
android:gravity="center"
android:button="@android:color/transparent"
android:background="@drawable/radio_vc_selector"
android:id="@+id/checkbox2"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/onex_icon"
android:visibility="invisible"
android:layout_centerHorizontal="true"
android:id="@+id/im_onetwox"
/>
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radiogroup"
android:visibility="gone"
android:layout_marginTop="10dp"
android:layout_below="@+id/im_onetwox"
android:orientation="horizontal">
<RadioButton
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_toRightOf="@+id/tv_SelectViceCaptain"
android:layout_centerVertical="true"
android:visibility="visible"
android:text="C"
android:layout_marginRight="10dp"
android:gravity="center"
android:background="@drawable/radio_selector"
android:button="@android:color/transparent"
android:id="@+id/radio"/>
<RadioButton
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_toRightOf="@+id/checkbox"
android:layout_centerVertical="true"
android:visibility="visible"
android:text="VC"
android:gravity="center"
android:background="@drawable/radio_vc_selector"
android:button="@android:color/transparent"
android:id="@+id/radio2"/>
</RadioGroup>
<TextView
android:layout_width="40dp"
android:layout_height="40dp"
android:text="VC"
android:textAlignment="center"
android:gravity="center"
android:visibility="gone"
android:padding="10dp"
android:layout_toRightOf="@+id/tv_SelectCaptain"
android:layout_centerVertical="true" android:background="@drawable/circle_captain_vc_back"
android:id="@+id/tv_SelectViceCaptain"
android:textColor="#1e1e1e"
android:layout_marginLeft="10dp"
/>
</RelativeLayout>
</RelativeLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#8e8e8e"
android:layout_marginTop="5dp"
android:layout_marginBottom="2dp"
android:layout_marginRight="5dp"
android:layout_marginLeft="5dp"
android:layout_below="@+id/RL_PlayerListMain"/>
</RelativeLayout>
选择C和VC
从顶部滚动到底部并从底部滚动到顶部
请忽略广播组。我的代码可以与复选框配合使用，只能在滚动时产生问题。
3 个答案:
答案 0 :(得分：1)
对于 checkbox ，您需要使用 checkbox.OnCheckedChangeListener() 代替 checkbox.setOnClickListener()
按照此步骤
在您的 BeanDBTeam 类中添加新的布尔变量
public class BeanDBTeam
{
boolean isChecked;
public boolean getisChecked() {
return isChecked;
}
public void setIsChecked(boolean flag) {
isChecked= flag;
}
}
现在在您内部 onBindViewHolder() 添加以下代码
@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, int position) {
BeanDBTeam bean = mListenerList.get(position).getisChecked()
// check here the flag and status of checkbox based on flag
holder.checkbox2.setChecked(bean.getisChecked());
holder.checkbox2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
// set flag of checkbox status in your list when user check or uncheck the checkbox
bean.setIsChecked(isChecked);
notifyDataChanged();
}
});
}
答案 1 :(得分：0)
如 @Nilesh 所建议的那样，为了将Bean类用于checkbox状态，请记住以下功能：
/**
* CheckType ==>>1 For the first checkbox
* CheckType ==>>2 For the second checkbox
* CheckType ==>>0 For the None
*/
public class BeanDBTeam
{
int checkType;
public int getCheckType() {
return checkType;
}
public void setCheckType(int checkType) {
this.checkType = checkType;
}
}
在 MyViewHolder 内，您需要应用 setOnCheckedChangeListener 侦听器并从 getAdapterPosition()获得位置strong>如下所示
public class MyViewHolder extends RecyclerView.ViewHolder {
TextView tv_PlayerName, tv_SelectCaptain, tv_SelectViceCaptain, tv_PlayerTeamName, tv_PlayerPoints, tv_TeamNumber;
ImageView im_PlayerImage, im_onetwox;
CheckBox checkbox, checkbox2;
RadioGroup radiogroup;
RadioButton radio, radio2;
public MyViewHolder(View view) {
super(view);
tv_PlayerName = view.findViewById(R.id.tv_PlayerName);
tv_PlayerTeamName = view.findViewById(R.id.tv_PlayerTeamName);
tv_PlayerPoints = view.findViewById(R.id.tv_PlayerPoints);
im_PlayerImage = view.findViewById(R.id.im_PlayerImage);
im_onetwox = view.findViewById(R.id.im_onetwox);
tv_TeamNumber = view.findViewById(R.id.tv_TeamNumber);
tv_SelectViceCaptain = view.findViewById(R.id.tv_SelectViceCaptain);
tv_SelectCaptain = view.findViewById(R.id.tv_SelectCaptain);
checkbox = view.findViewById(R.id.checkbox);
checkbox2 = view.findViewById(R.id.checkbox2);
radiogroup = view.findViewById(R.id.radiogroup);
radio = view.findViewById(R.id.radio);
radio2 = view.findViewById(R.id.radio2);
/**
* NOW WE APPLY THE setOnCheckedChangeListener functionality for the checkboxlistener
*/
checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// set flag of checkbox status in your list when user check or uncheck the checkbox
if (checkbox) {
YOUR_ARRAYLIST.get(getAdapterPosition()).setCheckType(1);
}
else {
YOUR_ARRAYLIST.get(getAdapterPosition()).setCheckType(0);
}
notifyDataChanged();
}
});
checkbox2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// set flag of checkbox status in your list when user check or uncheck the checkbox
if (checkbox) {
YOUR_ARRAYLIST.get(getAdapterPosition()).setCheckType(2);
}
else {
YOUR_ARRAYLIST.get(getAdapterPosition()).setCheckType(0);
}
notifyDataChanged();
}
});
}
}
在 onBindViewHolder 中，我们需要根据以下选择设置Checkbox
@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, int position) {
BeanDBTeam bean = mListenerList.get(position).getisChecked()
// check here the flag and status of checkbox based on flag
if(bean.getCheckType()==0) {
holder.checkbox.setChecked(false);
holder.checkbox2.setChecked(false);
}
else if(bean.getCheckType()==1) {
holder.checkbox.setChecked(true);
holder.checkbox2.setChecked(false);
}
else if(bean.getCheckType()==2) {
holder.checkbox.setChecked(false);
holder.checkbox2.setChecked(true);
}
}
答案 2 :(得分：0)
这就是回收行为，您可以使用其他正确的答案，但由于列表中的条目有限，因此您实际上可以禁用回收您的recyclerview。在适配器中使用以下代码：
@Override
public void onBindViewHolder(final CommentViewHolder viewHolder, final int position) {
viewHolder.setIsRecyclable(false);
}
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