当我滚动列表视图时，项目会自动更改，换句话说，项目会覆盖其他项目的视图，例如：当我点击收藏夹按钮时其他项目已经更改为这样 例如：
这是我的代码：
CustomListAdapter.java：
public class CustomListAdapter extends BaseAdapter {
private Context context;
LayoutInflater inflater;
boolean isVoter;
public CustomListAdapter(Context c ) {
this.context = c;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null){
LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.date_view,null);
viewHolder = new ViewHolder();
viewHolder.vote = (ImageButton) convertView.findViewById(R.id.vote);
}else {
viewHolder = (ViewHolder)convertView.getTag();
}
isVoter = newsItemArray.get(position).isVoter();
viewHolder.vote.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!Utility.isNetworkAvailable(context))
Toast.makeText(context, R.string.no_network, Toast.LENGTH_LONG).show();
else
voteBtn( position);
}});
return convertView;
}
public void voteBtn(int position){
if ( !isVoter ) {
viewHolder.vote.setImageResource(R.drawable.button_pressed);
}
else{
viewHolder.vote.setImageResource(R.drawable.button_normal);
}
isVoter = !isVoter;
}
}
private class ViewHolder{
ImageButton vote ;
}
@Override
public int getCount() {
return newsItemArray.size();
}
@Override
public Object getItem(int position) {
return newsItemArray.get(position).getTitle();
}
@Override
public long getItemId(int position) {
return position;
}
}
date_view.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#f2f2f2"
android:gravity="center"
android:elevation="8dp"
android:layout_margin="10dp">
<android.support.v7.widget.CardView
android:id="@+id/newsCardView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#fff"
android:layout_margin="10dp"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="10dp"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/newsimage1"
android:layout_width="45px"
android:layout_height="45px"
android:src="@mipmap/ic_launcher"
android:scaleType="centerCrop"
/>
<TextView
android:id="@+id/newsname"
android:layout_marginLeft="16dp"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Fox News."
android:textColor="#000000"
android:textSize="20dp"
android:layout_gravity="center"
/>
<TextView
android:id="@+id/time"
android:layout_weight="0.6"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="2 day ago"
android:textColor="@color/listsub1"
android:textSize="14dp"
android:layout_gravity="center"
/>
<ImageView
android:id="@+id/more"
android:visibility="invisible"
android:layout_width="15dp"
android:layout_height="22dp"
android:src="@drawable/more"
android:layout_gravity="center"
/>
</LinearLayout>
<LinearLayout
android:layout_marginTop="12dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:id="@+id/sourceNews"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginRight="5dp"
>
<TextView
android:id="@+id/news"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Trump’s Plan for AmericanMade iPhonew Wold Be Disastrous. Trump’s Plan for AmericanMade iPhonew Wold Be Disastrous"
android:textSize="20dp"
android:textColor="@color/listtext"
android:lineSpacingExtra="3dp"
/>
<TextView
android:id="@+id/newssub"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Why even a President Trump couldn’t make Apple manufacture iPhone in the state."
android:layout_marginTop="5dp"
android:textSize="13dp"
android:textColor="@color/listsub1"
android:lineSpacingExtra="3dp"
/>
<TextView
android:id="@+id/votes_num"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="10dp"
android:textStyle="bold"
android:textColor="#f40000"
android:maxLines="1"
android:layout_marginTop="5dp"
/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="horizontal">
<ImageButton
android:id="@+id/vote"
android:layout_width="50dp"
android:layout_height="50dp"
android:src="@drawable/star"
android:background="#00ffffff"
android:paddingLeft="5dp" />
<!--
<ImageButton
android:id="@+id/vote"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"
android:background="@drawable/star"
android:paddingLeft="5dp" />
<Button
android:id="@+id/share"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Share"
android:textColor="@color/background_material_light"/>
<Button
android:id="@+id/comment"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Comment"
android:textColor="@color/background_material_light"/>
-->
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
答案 0 :(得分：0)
isVoter和viewHolder不应该是Adapter中的全局变量。意思是，你实际上并没有改变newsItemArray.get（position）返回的任何成员.isVoter（）
尝试将位置添加到ViewHolder对象。然后将ViewHolder对象传递给viewHolder.vote.setOnClickListener的构造函数。在OnClickListener中，您可以调用
isVoter = newsItemArray.get(viewHolder.position).isVoter();
newsItemArray.get(viewHolder.position).setVoter(!isVoter);