当用户点击对话框的确定按钮时，我需要删除列表视图的项目。所以我需要在自定义适配器类中进行处理。我只想知道如何删除自定义适配器中列表视图的项目。
这是我的代码：
public class AddressAdapter extends BaseAdapter implements OnClickListener{
ArrayList<Model_Address> arr_list;
Activity activity;
LayoutInflater inflater;
Typeface gotham_light,gotham_light_italic,gotham_medium,gotham_medium_italic,gotham_book,gotham_book_italic;
public String tag="AddressAdapter";
RelativeLayout rl_main;
ProgressDialog dialog;
public AddressAdapter(Activity activity,ArrayList<Model_Address> arr_list,RelativeLayout rl_main)
{
this.activity=activity;
this.arr_list=arr_list;
this.rl_main=rl_main;
inflater=(LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
gotham_light=Typeface.createFromAsset(activity.getAssets(), "fonts/gotham_light.ttf");
gotham_light_italic=Typeface.createFromAsset(activity.getAssets(), "fonts/gotham_light_italic.ttf");
gotham_medium=Typeface.createFromAsset(activity.getAssets(), "fonts/gotham_medium.ttf");
gotham_medium_italic=Typeface.createFromAsset(activity.getAssets(), "fonts/gotham_medium_italic.ttf");
gotham_book_italic=Typeface.createFromAsset(activity.getAssets(), "fonts/gotham_book_italic.ttf");
gotham_book=Typeface.createFromAsset(activity.getAssets(), "fonts/gotham_book.otf");
}
@Override
public int getCount() {
if (arr_list.size()>0) {
int count=arr_list.size();
return count;
}
return 0;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
int id=arr_list.get(position).getId();
return id;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View view=convertView;
final ViewHolder holder;
if (view==null) {
view=inflater.inflate(R.layout.address_item, null);
holder=new ViewHolder();
holder.rl_main=(RelativeLayout)view.findViewById(R.id.rl_main);
holder.rl_submain=(RelativeLayout)view.findViewById(R.id.rl_submain);
holder.tv_type=(TextView)view.findViewById(R.id.tv_type);
holder.tv_address=(TextView)view.findViewById(R.id.tv_address);
holder.tv_status=(TextView)view.findViewById(R.id.tv_status);
holder.iv_list=(ImageView)view.findViewById(R.id.iv_edel);
holder.tv_type.setTypeface(gotham_book);
holder.tv_address.setTypeface(gotham_light);
holder.tv_status.setTypeface(gotham_book);
view.setTag(holder);
} else {
holder=(ViewHolder)view.getTag();
}
if (arr_list.size()<=0) {
Toast.makeText(activity, "No Data Available", Toast.LENGTH_SHORT).show();
} else {
final Model_Address temp_model=arr_list.get(position);
holder.tv_type.setText(temp_model.getType());
holder.tv_address.setText(temp_model.getAddress());
holder.tv_status.setText(temp_model.getDelivery_status());
holder.iv_list.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
PopupMenu popMenu=new PopupMenu(activity, holder.iv_list);
popMenu.getMenuInflater().inflate(R.menu.edit_delete_menu, popMenu.getMenu());
popMenu.setOnMenuItemClickListener(new OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
// TODO Auto-generated method stub
String selection=item.getTitle().toString();
Toast.makeText(activity, "u="+temp_model.getAddress(), Toast.LENGTH_SHORT).show();
switch (selection) {
case "Edit":
Log.d(tag, "edit>>"+holder.tv_address.getText().toString()+" a="+holder.tv_type.getText().toString());
Intent intent=new Intent(activity, Add_Address_Uae.class);
intent.putExtra("address", ""+temp_model.getAddress());
intent.putExtra("type", temp_model.getType());
intent.putExtra("city", temp_model.getCity());
intent.putExtra("locality", temp_model.getLocality());
intent.putExtra("store_id", temp_model.getStore_id());
intent.putExtra("address_id", String.valueOf(temp_model.getId()));
activity.startActivity(intent);
activity.finish();
break;
case "Delete":
Log.d(tag, "delete"+holder.tv_address.getText().toString()+" a="+holder.tv_type.getText().toString());
dialogAlert2("Alert!", ""+activity.getResources().getString(R.string.delete_confirm),String.valueOf(temp_model.getId()),position);
break;
}
return true;
}
});
popMenu.show();
}
});
view.setOnClickListener(new OnItemClickListener(position));
}
return view;
}
private class ViewHolder
{
RelativeLayout rl_main,rl_submain;
TextView tv_type,tv_address,tv_status;
ImageView iv_list;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
private class OnItemClickListener implements OnClickListener{
private int position=0;
public OnItemClickListener(int position)
{
this.position=position;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
AddressView addressView=(AddressView) activity;
addressView.onItemClick(position);
}
}
public void dialogAlert2(String title,String tv_sub,final String address_id,final int position)
{
DialogForAlert dAlert=new DialogForAlert(activity, rl_main, new DialogForAlert.OnOKButtonClickListener() {
@Override
public void onOkClick() {
// TODO Auto-generated method stub
Toast.makeText(activity, "ok clicked", Toast.LENGTH_SHORT).show();
new DeleteItemAsync(address_id,position).execute();
notifyDataSetChanged();
}
}, new DialogForAlert.OnCancelButtonClickListener() {
@Override
public void onCancelClick() {
// TODO Auto-generated method stub
Toast.makeText(activity, "cancel clicked", Toast.LENGTH_SHORT).show();
}
});
dAlert.setTitle(title);
dAlert.setMessage(tv_sub);
dAlert.setType(DialogForAlert.SHOW_TWO_BUTTON);
}
class DeleteItemAsync extends AsyncTask<Void, Void, Void>
{
String address_id="";
int position=0;
DeleteItemAsync(String address_id,int position)
{
this.address_id=address_id;
this.position=position;
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
startDialog();
WifiManager wm=(WifiManager)activity.getSystemService(activity.WIFI_SERVICE);
Constants.ip_addr=Formatter.formatIpAddress(wm.getConnectionInfo().getIpAddress());
}
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
deleteItemListener.setParameters(Constants.customer_id, "delete", Constants.device_id, Constants.device_type,
URLEncoder.encode(Constants.ip_addr), address_id);
String result=deleteItemListener.callURL();
JsonParsingForForget jsonParsingForForget=new JsonParsingForForget(result);
jsonParsingForForget.parse();
return null;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
stopDialog();
if (Constants.sucess.matches("1")) {
AddressView.removeItem(position,address_id);
} else {
dialogAlert(activity.getResources().getString(R.string.error), ""+Constants.sucesstxt);
}
}
}
DeleteItemListener deleteItemListener=new DeleteItemListener() {
String params="";
@Override
public String callURL() {
// TODO Auto-generated method stub
WebService webService=new WebService(Constants.URL_KEY_LOCATION+params.replace(" ", "%20"));
webService.callWebServiceByGetMethod();
String result=webService.getResult();
return result;
}
@Override
public void setParameters(String customer_id, String action,
String device_id, String device_type, String ip, String address_id) {
// TODO Auto-generated method stub
params="customer_id="+customer_id+"&action="+action+"&device_id="+device_id+"&device_type="+device_type+
"&ip="+ip+"&address_id="+address_id;
}
};
public void startDialog()
{
try {
dialog=new ProgressDialog(activity);
dialog.setIndeterminate(true);
dialog.setCancelable(true);
dialog.show();
dialog.setContentView(R.layout.progress_dialog);
dialog.setCanceledOnTouchOutside(false);
} catch (Exception e) {
// TODO: handle exception
}
}
public void stopDialog()
{
try {
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
dialog.dismiss();
}
});
} catch (Exception e) {
// TODO: handle exception
}
}
public void dialogAlert(String title,String tv_sub)
{
DialogForAlert dAlert=new DialogForAlert(activity, rl_main, new DialogForAlert.OnOKButtonClickListener() {
@Override
public void onOkClick() {
// TODO Auto-generated method stub
}
});
dAlert.setTitle(title);
dAlert.setMessage(tv_sub);
dAlert.setType(DialogForAlert.SHOW_ONE_BUTTON);
}
}
答案 0 :(得分：3)
arr_list.remove(position);
notifyDataSetChanged();