我为我的英语道歉，我是法国人。
我在RecyclerView中遇到列表问题。实际上，我想动态更改项目的TextView。但是，当我更改第一个项目的textView时，最后一个也改变了。我使用CardView来表示我的项目。
我不认为这是我的代码，而是RecyclerView的特殊性。
提前谢谢
我的适配器
public class CardAgendaAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements TimePickerDialog.OnTimeSetListener {
private static final int LENGTH = 7;
static private final int test[] = {1, 1, 1, 1, 1, 1, 1};
private int[][] dispo = new int[7][4];
private Context context;
private int startHour = -1;
private int finishHour = -1;
private int startMinute = -1;
private int finishMinute = -1;
private int pos = 0;
private RecyclerView.ViewHolder holderr;
public CardAgendaAdapter(Context context) {
this.context = context;
for (int i = 0; i < LENGTH; i++) {
dispo[i][0] = -1;
dispo[i][1] = -1;
dispo[i][2] = -1;
dispo[i][3] = -1;
}
}
@Override
public int getItemViewType(int position) {
// Just as an example, return 0 or 2 depending on position
// Note that unlike in ListView adapters, types don't have to be contiguous
return test[position];
}
@Override
public int getItemCount() {
return LENGTH;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view1 = inflater.inflate(R.layout.agenda_modify_card, parent, false);
View view2 = inflater.inflate(R.layout.agenda_card, parent, false);
switch (viewType) {
case 0: return new ViewHolder0(view1);
case 1: return new ViewHolder2(view2);
}
return null;
}
static final String days[] = {"Lundi", "Mardi","Mercredi","Jeudi","Vendredi","Samedi","Dimanche"};
@Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
switch (getItemViewType(position)) {
case 1 :
ViewHolder2 v2 = (ViewHolder2) holder;
v2.setDay(days[position]);
v2.setImage(position);
Log.d("item : ", String.valueOf(position));
v2.add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
pos = position;
holderr = holder;
TimePickerDialog timePickerDialog = new TimePickerDialog(context, listener, 0, 0, true);
timePickerDialog.show();
}
});
break;
case 0:
ViewHolder0 v0 = (ViewHolder0) holder;
v0.setTextCard();
v0.setDay(days[position]);
v0.setImage(position);
break;
}
}
public String testText(int startHour, int startMinute, int finishHour, int finishMinute) {
return String.valueOf(Html.fromHtml("Vous êtes disponnible de <b>" + String.valueOf(startHour) + "h" + String.valueOf(startMinute) +"</b> à <b> "+ String.valueOf(finishHour)+"h" +String.valueOf(finishMinute)+"</b>"));
}
public void setHour(int poistion, int startHour, int startMinute, int finishHour, int finishMinute, final RecyclerView.ViewHolder holder) {
dispo[poistion][0] = startHour;
dispo[poistion][1] = startMinute;
dispo[poistion][2] = finishHour;
dispo[poistion][3] = finishMinute;
switch (getItemViewType(poistion)) {
case 1:
ViewHolder2 v2 = (ViewHolder2) holder;
v2.setTextCard(startHour,startMinute,finishHour,finishMinute);
//view.findViewById(R.id.button_add).setVisibility(View.INVISIBLE);
//view.findViewById(R.id.button_modify).setVisibility(View.VISIBLE);
}
Log.d("Jour : " + poistion, String.valueOf(dispo[poistion][0]));
Log.d("Jour : " + poistion, String.valueOf(dispo[poistion][1]));
Log.d("Jour : " + poistion, String.valueOf(dispo[poistion][2]));
Log.d("Jour : " + poistion, String.valueOf(dispo[poistion][3]));
}
private void reinitHour() {
startHour = -1;
startMinute = -1;
}
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
TimePickerDialog timePickerDialog2;
Log.d("Picker la", "AVANT");
timePickerDialog2 = new TimePickerDialog(context, listener, 0, 0, true);
Log.d("Picker la", "APRÈS");
timePickerDialog2.show();
}
protected TimePickerDialog.OnTimeSetListener listener =
new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minuteOfDay) {
if (startHour == -1 && startMinute == -1) {
startHour = hourOfDay;
startMinute = minuteOfDay;
TimePickerDialog timePickerDialog2;
timePickerDialog2 = new TimePickerDialog(context, listener, 0, 0, true);
timePickerDialog2.show();
Toast.makeText(view.getContext(), "Heure de depart : " + startHour + " minutes de départ : " + startMinute, Toast.LENGTH_LONG).show();
} else {
finishHour = hourOfDay;
finishMinute = minuteOfDay;
Log.d("ça passe la", "FINNNNNNNN");
Toast.makeText(view.getContext(), "Heure de fin : " + finishHour + " minutes de fin : " + finishMinute, Toast.LENGTH_LONG).show();
setHour(pos,startHour,startMinute,finishHour,finishMinute, holderr);
reinitHour();
}
}
};
class ViewHolder2 extends RecyclerView.ViewHolder {
TextView title;
TextView disponibility;
ImageView imageView;
Button add;
Button modify;
public ViewHolder2(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.card_title);
disponibility = (TextView) itemView.findViewById(R.id.card_text);
imageView = (ImageView) itemView.findViewById(R.id.card_image);
add = (Button) itemView.findViewById(R.id.button_add);
modify = (Button) itemView.findViewById(R.id.button_modify);
}
public void setTextCard(int startHour, int startMinute, int finishHour, int finishMinute) {
disponibility.setText(Html.fromHtml("Vous êtes disponnible de <b>" + String.valueOf(startHour) + "h" + String.valueOf(startMinute) +"</b> à <b> "+ String.valueOf(finishHour)+"h" +String.valueOf(finishMinute)+" </b>"));
}
public void setDay(String str) {
if (title != null) {
title.setText(str);
}
}
public void setImage(int position) {
if (imageView != null) {
imageView.setImageResource(getId(position+1));
}
}
private int getId(int position) {
Context context = imageView.getContext();
int id = context.getResources().getIdentifier("tennis"+position, "drawable", context.getPackageName());
return id;
}
}
class ViewHolder0 extends RecyclerView.ViewHolder {
TextView textCard;
TextView textTitle;
ImageView imageView;
public ViewHolder0(View itemView){
super(itemView);
textCard = (TextView) itemView.findViewById(R.id.card_text);
textTitle = (TextView) itemView.findViewById(R.id.card_title);
imageView = (ImageView) itemView.findViewById(R.id.card_image);
}
public void setDay(String str) {
if (textTitle != null) {
textTitle.setText(str);
}
}
public void setTextCard() {
textCard.setText(Html.fromHtml("Vous êtes disponnible de <b>17h30</b> à <b>18h30</b>"));
}
public void setImage(int position) {
if (imageView != null) {
imageView.setImageResource(getId(position + 1));
}
}
private int getId(int position) {
Context context = imageView.getContext();
int id = context.getResources().getIdentifier("tennis"+position, "drawable", context.getPackageName());
return id;
}
}
}
agenda_card.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView 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:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="@dimen/card_height"
android:layout_gravity="center"
android:layout_marginBottom="@dimen/md_keylines"
android:layout_marginLeft="@dimen/md_keylines"
android:layout_marginRight="@dimen/md_keylines"
app:elevation="0dp"
android:foreground="?attr/selectableItemBackground">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/card_image"
android:layout_width="match_parent"
android:layout_height="@dimen/card_image_height"
android:scaleType="centerCrop"
android:src="@drawable/tennis1" />
<TextView
android:id="@+id/card_title"
android:layout_width="match_parent"
android:layout_height="@dimen/card_title_height"
android:text="Lundi"
android:textAppearance="@style/TextAppearance.AppCompat.Title"
android:textColor="@color/white"
android:layout_above="@+id/card_text"
android:layout_alignLeft="@+id/card_text"
android:layout_alignStart="@+id/card_text"
android:layout_marginLeft="5dp"
android:gravity="center_vertical" />
<TextView
android:id="@+id/card_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Vous n'avez pas ajouté de disponibilité"
android:ellipsize="end"
android:singleLine="true"
android:textColor="@color/dark_grey"
android:textSize="@dimen/article_subheading"
android:layout_below="@+id/card_image"
android:layout_centerHorizontal="true"
android:gravity="center_horizontal" />
<Button
android:id="@+id/button_add"
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="?android:attr/borderlessButtonStyle"
android:textColor="@color/green"
android:text="AJOUTER"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
</android.support.v7.widget.CardView>
答案 0 :(得分：0)
它与您的绑定以及适配器的工作方式有关。
就像已经告诉你的名字一样，如果原来的位置不再显示，你的适配器的视图会被回收显示在另一个位置。但是ViewHolder2的代码不会更新视图持有者的所有数据。
ViewHolder2 v2 = (ViewHolder2) holder;
v2.setDay(days[position]);
v2.setImage(position);
Log.d("item : ", String.valueOf(position));
v2.add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
pos = position;
holderr = holder;
TimePickerDialog timePickerDialog = new TimePickerDialog(context, listener, 0, 0, true);
timePickerDialog.show();
}
});
缺少对v2.setTextCard()的调用。因此，您需要确保disponibility设置正确。这通常适用于任何视图持有者的所有字段。
尝试将适配器更多一些。此外，在视图持有者上使用update()方法来处理更改也很方便。
作为旁注，您的onCreateViewHolder()方法可能会更有效率。目前你每次都在膨胀两个视图，即使你只使用一个。
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
switch (viewType) {
case 0: return new ViewHolder0(inflater.inflate(R.layout.agenda_modify_card, parent, false));
case 1: return new ViewHolder2(inflater.inflate(R.layout.agenda_card, parent, false));
default: return null;
}