求指导!BaseAdapter监听的ListView如何设置长点击删除item
希望长点击一个item后会弹出AlertDialog,确定的话就会删除该ListView的item,
监听器是BaseAdapter
listview.setOnItemLongClickedListener(),方法里面可以使用removeItem(position);或者弹出Dialog,选择是否删除
public class MainActivity extends Activity {
private List<String> myList;
private ListView list;
private MyAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myList = new ArrayList<String>();
list = (ListView) findViewById(R.id.list);
myList.add("姓名1");
myList.add("姓名2");
myList.add("姓名3");
myList.add("姓名4");
myList.add("姓名5");
adapter = new MyAdapter();
list.setAdapter(adapter);
list.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
myList.remove(position);
adapter.notifyDataSetChanged();
return false;
}
});
}
class MyAdapter extends BaseAdapter{
@Override
public int getCount() {
// TODO Auto-generated method stub
return myList.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return myList.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder viewHolder ;
if(convertView == null){
convertView = LayoutInflater.from(MainActivity.this).inflate(R.layout.list_text,parent,false);
viewHolder = new ViewHolder();
viewHolder.myText = (TextView) convertView.findViewById(R.id.text);
convertView.setTag(viewHolder);
}else{
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.myText.setText(myList.get(position));
return convertView;
}
}
class ViewHolder{
TextView myText ;
}
}
你试试 XML也贴给你
activity_main的
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.work.list.MainActivity" >
<ListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
ListView内的
<?xml version="1.0" encoding="utf-8"?>
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center" />