-1
您好！簡單的購物清單應用程序（具有自定義行的ListView，自定義適配器）。剛剛處理着名的listview複選框滾動問題。。保存數據
請檢查我的代碼（正確的viewHolder實現），並幫我找到最簡單的方法來保存數據。 （之後的onDestroy（））
適配器：
public class ShopAdapter extends BaseAdapter {
private Context mainContex;
private ArrayList<ShopItem> shopItems;
static class ViewHolder {
CheckBox checkBox;
TextView textView;
}
public ShopAdapter(Context mainContex, ArrayList<ShopItem> shopItems) {
this.mainContex = mainContex;
this.shopItems = shopItems;
}
@Override
public int getCount() {
return shopItems.size();
}
@Override
public Object getItem(int position) {
return shopItems.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ShopItem shopItem = shopItems.get(position);
final ViewHolder viewHolder;
if (convertView == null) {
viewHolder = new ViewHolder();
LayoutInflater layoutInflater = LayoutInflater.from(mainContex);
convertView = layoutInflater.inflate(R.layout.shoplist_item, null);
viewHolder.textView = (TextView) convertView.findViewById(R.id.itemTextView);
viewHolder.checkBox = (CheckBox) convertView.findViewById(R.id.doneCheckBox);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.checkBox.setTag(shopItems.get(position));
viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
shopItem.setDone(true);
viewHolder.textView.setTextColor(mainContex.getResources()
.getColor(R.color.done_text_color));
} else {
shopItem.setDone(false);
viewHolder.textView.setTextColor(mainContex.getResources()
.getColor(R.color.secondary_text));
}
}
});
viewHolder.textView.setText(shopItem.getDescription());
viewHolder.checkBox.setChecked(shopItem.isDone());
return convertView;
}
}
項目：
public class ShopItem {
private String description;
private boolean done;
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public boolean isDone() {
return done;
}
public void setDone(boolean done) {
this.done = done;
}
}