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在我的BaseAdpater中，我將一個視圖的可見性設置爲在某一操作後排成一行。所有操作都很好，但視圖在後臺保持可見，而較低的視圖向上移動直到我觸摸屏幕。這意味着listview正在更新視圖並釋放將可見性設置爲GONE的空間，但視圖在後臺仍然可見。可能是什麼問題？沒有隱藏視圖，但空間被釋放
代碼：
import android.content.Context;
import android.content.DialogInterface;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.iu.foodbucket.BaseActivity;
import com.iu.foodbucket.R;
import com.iu.foodbucket.database.MyDataSource;
import com.iu.foodbucket.fragments.CartFragment;
import com.iu.foodbucket.models.Cart;
import com.iu.foodbucket.utils.AppGlobal;
import java.util.List;
public class CartAdapter extends BaseAdapter {
Fragment context;
List<Cart> data;
MyDataSource myDataSource;
boolean isOldOrder;
public CartAdapter(Fragment ctx, List<Cart> data, boolean orderStatus) {
this.context = ctx;
this.data = data;
this.isOldOrder = orderStatus;
myDataSource = new MyDataSource(ctx.getActivity());
}
@Override
public int getCount() {
return data.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
LayoutInflater inflater = (LayoutInflater) context.getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.row_cart, parent, false);
holder.title_tv = (TextView) convertView.findViewById(R.id.title_tv);
holder.quantity_tv = (TextView) convertView.findViewById(R.id.quantity_tv);
holder.price_tv = (TextView) convertView.findViewById(R.id.price_tv);
holder.edit_iv = (ImageView) convertView.findViewById(R.id.edit_iv);
holder.thumbnail_iv = (ImageView) convertView.findViewById(R.id.thumbnail_iv);
holder.editPanel = (LinearLayout) convertView.findViewById(R.id.editPanel);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.title_tv.setText(data.get(position).getMenu().getTitle());
holder.quantity_tv.setText(context.getString(R.string.quantity_abbr) + " " + data.get(position).getQuantity());
if (((BaseActivity) context.getActivity()).dataPreference.getIsImageEnabled())
Glide.with(context.getActivity()).load(data.get(position).getMenu().getThumbnail()).placeholder(R.drawable.ic_tag_face).centerCrop().into(holder.thumbnail_iv);
float price = Float.parseFloat(data.get(position).getMenu().getPrice());
price = (float) AppGlobal.round(price, 2);
holder.price_tv.setText(data.get(position).getMenu().getPriceUnit() + " " + price);
final View finalConvertView = convertView;
holder.edit_iv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (holder.editPanel.getVisibility() != View.VISIBLE) {
holder.editPanel.setVisibility(View.VISIBLE);
showEditablePanel(finalConvertView, position, holder.editPanel);
} else {
holder.editPanel.setVisibility(View.GONE);
}
}
});
return convertView;
}
private void showEditablePanel(View v, final int position, final LinearLayout editPanel) {
final TextView quantity_tv = (TextView) v.findViewById(R.id.quantityUpdated_tv);
final ImageButton minus_btn = (ImageButton) v.findViewById(R.id.minus_btn);
final ImageButton plus_btn = (ImageButton) v.findViewById(R.id.plus_btn);
ImageButton update_btn = (ImageButton) v.findViewById(R.id.update_btn);
ImageButton remove_btn = (ImageButton) v.findViewById(R.id.remove_btn);
final int[] quantity = {Integer.parseInt(data.get(position).getQuantity())};
quantity_tv.setText(quantity[0] + "");
minus_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
quantity[0]--;
updateViews(quantity[0], minus_btn, quantity_tv);
}
});
plus_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
quantity[0]++;
updateViews(quantity[0], minus_btn, quantity_tv);
}
});
update_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!isOldOrder) // update cart item in DB
myDataSource.updateCartItem(data.get(position).getMenu().getId(), quantity[0] + "");
data.get(position).setQuantity(quantity[0] + "");
editPanel.setVisibility(View.GONE);
notifyDataSetChanged();
((CartFragment) context).updateTotalValues();
}
});
remove_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
deletionConfirmationDialog(position, editPanel);
}
});
}
public void deletionConfirmationDialog(final int position, final LinearLayout editPanel) {
final android.app.AlertDialog.Builder alertDialogBuilder = new android.app.AlertDialog.Builder(context.getActivity());
alertDialogBuilder.setCancelable(false);
alertDialogBuilder.setTitle(context.getString(R.string.title_delete));
alertDialogBuilder.setMessage(context.getString(R.string.message_confirm_deletion));
alertDialogBuilder.setPositiveButton(context.getString(R.string.title_yes), new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
if (!isOldOrder) // delete cart item from DB
myDataSource.deleteCartItem(data.get(position).getMenu().getId());
editPanel.setVisibility(View.GONE);
data.remove(position);
notifyDataSetChanged();
((CartFragment) context).updateTotalValues();
}
});
alertDialogBuilder.setNegativeButton(context.getString(R.string.title_no), new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, just close
}
});
android.app.AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
private void updateViews(int quantity, ImageButton minus_btn, TextView quantity_tv) {
if (quantity > 1) {
minus_btn.setEnabled(true);
minus_btn.setAlpha((float) 1.0);
} else {
minus_btn.setEnabled(false);
minus_btn.setAlpha((float) 0.4);
}
quantity_tv.setText(quantity + "");
}
private class ViewHolder {
TextView title_tv, quantity_tv, price_tv;
ImageView thumbnail_iv, edit_iv;
LinearLayout editPanel;
}
}
發佈您的代碼。 –
您能否提供您的代碼的相關片段？ – 2016-11-25 09:51:59
請立即檢查。 –