我有一个自定义适配器和一个列表,我在动态添加项目时按钮单击。每个列表行都有一个删除按钮(或图像)。这是我的自定义适配器类:尝试从ListView中删除项目总是删除第一个项目
package com.ameer.easycooking;
import android.content.Context;
import android.media.Image;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.List;
/**
* Created by ameer on 12/10/2016.
*/
public class IngredientAdapter extends ArrayAdapter<String> {
private List<String> ingredientList;
private Context context;
public IngredientAdapter(List<String> ingredientList, Context context) {
super(context, R.layout.ingredient_list_item, ingredientList);
this.ingredientList = ingredientList;
this.context = context;
}
public static class IngredientHolder {
private TextView name;
private ImageView remove;
public IngredientHolder(TextView name, ImageView remove) {
this.name = name;
this.remove = remove;
}
public TextView getName() {
return name;
}
public ImageView getRemove() {
return remove;
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
IngredientHolder holder;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.ingredient_list_item, null);
holder = new IngredientHolder((TextView) v.findViewById(R.id.ingredientName), (ImageView) v.findViewById(R.id.remove));
holder.getRemove().setTag(position);
holder.getRemove().setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int index = (int) v.getTag();
Toast.makeText(context, ingredientList.get(index) + " removed", Toast.LENGTH_SHORT).show();
ingredientList.remove(index);
notifyDataSetChanged();
}
});
v.setTag(holder);
} else {
holder = (IngredientHolder) v.getTag();
}
String ingredient = ingredientList.get(position);
holder.name.setText(ingredient);
return v;
}
}
我的问题是,我选择无论有多少个项目添加或其中之一删除,它总是在ListView除去第一排,而不是点击一个。
移动'holder.getRemove().setTag(position);'在你的if/else逻辑之后 – Blackbelt
@Blackbelt谢谢你,现在工作正常。 :) – user3501779