在滚动RecyclerView时更改了Cardview的数据

我是Android开发人员的开始。 我用CardView制作了一个应用程序，但是当我滚动RecyclerView时，它正在改变它的内容。 请帮我）

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我的代码：

RecyclerViewActivity.java：

import android.app.ActionBar; import android.app.Activity; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.CardView; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import java.util.ArrayList; import java.util.List; public class RecyclerViewActivity extends AppCompatActivity { private List ingredients = new ArrayList(); private RecyclerView rv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.recyclerview_activity); rv=(RecyclerView)findViewById(R.id.rv); LinearLayoutManager llm = new LinearLayoutManager(this); rv.setLayoutManager(llm); rv.setHasFixedSize(true); initializeAdapter(); initializeData(); } private void initializeData(){ ingredients.add(new Ingredient("Арахис очищенный", "8 грамм в чайной ложке", "23,3 грамма в столовой ложке", "175 грамм в стакане (250 мл)", R.drawable.peanut)); ingredients.add(new Ingredient("Брусника", "", "", "140 грамм в стакане (250 мл)", R.drawable.cranberry)); ingredients.add(new Ingredient("Варенье", "19 грамм в чайной ложке", "46,7 грамм в столовой ложке", "330 грамм в стакане (250 мл)", R.drawable.jam)); } private void initializeAdapter(){ RVAdapter adapter = new RVAdapter(ingredients); rv.setAdapter(adapter); } } 

RVAdapter.java：

 import android.support.v7.widget.CardView; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import java.util.List; public class RVAdapter extends RecyclerView.Adapter { public static class IngredientViewHolder extends RecyclerView.ViewHolder { CardView cv; public static TextView ingredientName; public static TextView ingredientTeaspoon; public static TextView ingredientTablespoon; public static TextView ingredientGlass; public static ImageView ingredientPhoto; IngredientViewHolder(View itemView) { super(itemView); cv = (CardView)itemView.findViewById(R.id.cv); ingredientName = (TextView)itemView.findViewById(R.id.ingredient_name); ingredientTeaspoon = (TextView)itemView.findViewById(R.id.ingredient_teaspoon); ingredientTablespoon = (TextView)itemView.findViewById(R.id.ingredient_tablespoon); ingredientGlass = (TextView)itemView.findViewById(R.id.ingredient_glass); ingredientPhoto = (ImageView)itemView.findViewById(R.id.ingredient_photo); } } List ingredients; RVAdapter(List ingredients){ this.ingredients = ingredients; } @Override public void onAttachedToRecyclerView(RecyclerView recyclerView) { super.onAttachedToRecyclerView(recyclerView); } @Override public IngredientViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) { View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item, viewGroup, false); IngredientViewHolder ivh = new IngredientViewHolder(v); return ivh; } @Override public void onBindViewHolder(IngredientViewHolder ingredientViewHolder, int i) { IngredientViewHolder.ingredientName.setText(ingredients.get(i).name); IngredientViewHolder.ingredientTablespoon.setText(ingredients.get(i).tablespoon); IngredientViewHolder.ingredientTeaspoon.setText(ingredients.get(i).teaspoon); IngredientViewHolder.ingredientGlass.setText(ingredients.get(i).glass); IngredientViewHolder.ingredientPhoto.setImageResource(ingredients.get(i).photoId); } @Override public int getItemCount() { return ingredients.size(); } } 

CardViewActivity.java：

 import android.app.Activity; import android.os.Bundle; import android.widget.ImageView; import android.widget.TextView; public class CardViewActivity extends Activity { TextView ingredientName; TextView ingredientTeaspoon; TextView ingredientTablespoon; TextView ingredientGlass; ImageView ingredientPhoto; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.cardview_activity); ingredientName = (TextView)findViewById(R.id.ingredient_name); ingredientTeaspoon = (TextView)findViewById(R.id.ingredient_teaspoon); ingredientTablespoon = (TextView)findViewById(R.id.ingredient_tablespoon); ingredientGlass = (TextView)findViewById(R.id.ingredient_glass); ingredientPhoto = (ImageView)findViewById(R.id.ingredient_photo); ingredientPhoto.setImageResource(R.drawable.salt); } } 

Answer 1

从此代码块中删除所有static ：

  public static TextView ingredientName; public static TextView ingredientTeaspoon; public static TextView ingredientTablespoon; public static TextView ingredientGlass; public static ImageView ingredientPhoto; 

并在onBindViewHolder期间更改为：

  // with lower case `i` ingredientViewHolder.ingredientName.setTe ... etc 

并尝试阅读有关静态和非静态字段的区别。 我用Google搜索并发现： http ：//www.tutorial4us.com/java/java-static-and-non-static-variable

Answer 2

删除IngredientViewHolder定义及其字段中的static

Answer 3

从此代码块中删除所有static ：

  public static TextView ingredientName; public static TextView ingredientTeaspoon; public static TextView ingredientTablespoon; public static TextView ingredientGlass; public static ImageView ingredientPhoto;