我对android开发很陌生,我觉得这很简单,但是,我还没有设法在谷歌上找到有同样问题的人。我有一个 Gridview,里面有一个 TextView(顶部有一个图像)和一个 ImageButton(用于删除当前项目)。我想要做的是删除我单击 ImageButton 的项目。
这是我的主要内容:
public class ActivityMain extends Activity
{
GridView gridview;
public GridAdapter mainActivityAdapter;
public ArrayList<String> listService = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listService.add("Market");
listService.add("Recherche");
listService.add("Quiz");
gridview = (GridView) findViewById(R.id.mainActivity_grid);
mainActivityAdapter = new GridAdapter(this.getApplicationContext(), listService);
gridview.setAdapter(mainActivityAdapter);
}
}
这是我的适配器:
public class GridAdapter extends BaseAdapter
{
Context context;
ArrayList<String> list = new ArrayList<String>();
GridAdapter adapter = this;
public GridAdapter(Context context, ArrayList<String> list)
{
this.context = context;
this.list = list;
}
@Override
public int getCount()
{
return list.size();
}
@Override
public Object getItem(int arg0)
{
return null;
}
@Override
public long getItemId(int arg0)
{
return 0;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent)
{
ViewHolder holder;
if(convertView==null)
{
convertView = LayoutInflater.from(context).inflate(R.layout.item_gridmain, null);
holder = new ViewHolder();
holder.textView = (TextView) convertView.findViewById(R.id.gridMain_text);
holder.close = (ImageButton) convertView.findViewById(R.id.mainActivity_delete);
convertView.setTag(holder);
}
else{
holder = (ViewHolder) convertView.getTag();
}
// Doing stuff on views
holder.close.setOnClickListener(new View.OnClickListener()
{
public void onClick(View arg1)
{
// list.remove(position);
list.remove(position);
adapter.notifyDataSetChanged();
}
});
return convertView;
}
public static class ViewHolder
{
TextView textView;
ImageButton close;
}
}
问题是,当我单击一个 ImageButton 时,它总是被删除的最后一个添加的项目,我不知道为什么或如何解决这个问题。
谢谢你。
=================== 编辑:
这是我的 activity_main.xml :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#DDDDDD"
android:orientation="vertical" >
<GridView
android:id="@+id/mainActivity_grid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="5sp"
android:layout_marginRight="5sp"
android:layout_marginTop="5sp"
android:clickable="false"
android:gravity="center"
android:horizontalSpacing="15dp"
android:numColumns="2"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" />
</LinearLayout>
还有我的 item_gridmain.xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/gridMain_text"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_gravity="center"
android:textAlignment="center"
android:textColor="@android:color/holo_blue_dark"
/>
<ImageButton
android:id="@+id/mainActivity_delete"
style="?android:attr/borderlessButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:contentDescription="@string/deleteFav"
android:src="@drawable/boutoncroixfermer" />
</RelativeLayout>