Question

在Listview删除的最后一个选项中，当我应用选项菜单时，删除任何列表项的选项，它只删除了最后一项我现在可以做什么？选择编辑选项时会发生类似的问题，它会选择或获取最后一项的信息，

final CharSequence[] gender = {"Edit","Delete"};

         alert = new AlertDialog.Builder(StikiNotesActivity.this);
                final AlertDialog.Builder alert_del = new AlertDialog.Builder(StikiNotesActivity.this);

                alert_del.setTitle("Confirmation !");


                alert.setTitle("Options");
                alert.setItems(gender,new DialogInterface.OnClickListener()
                {
                 @Override
                 public void onClick(DialogInterface dialog, int which) 
                 {
                     if(which==0)
                     {
                        Toast.makeText(getApplicationContext(), "EditOpetion"+alist.get(0).sid, Toast.LENGTH_SHORT).show();

                        final Intent i = new Intent(StikiNotesActivity.this,FirstClass.class);
                        //String txt=new String();
                        i.putExtra("id",""+alist.get(position).sid);            
                        startActivity(i);


                     }
                     else if(which==1)
                     {
                         AlertDialog.Builder alertDialog=new AlertDialog.Builder(StikiNotesActivity.this);
                         alertDialog.setTitle("Selected Subject will be deleted");
                         alertDialog.setPositiveButton("Ok",
                                    new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog,
                                                int id) {

                                            alist.remove(position);
                                            adap.notifyDataSetChanged();
                                            dialog.cancel();
                                        }
                                    });
                            alertDialog.setNegativeButton("Cancel", null);
                            alertDialog.show();
                     }


                 }});

请帮我解决这个问题？

Answer 1

你可以这样做

1 - 在删除AlertDialog中单击“确定”按钮后，您必须获得item position，我建议您必须实施onItemClickListener

yourListView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1,
                    int position, long arg3) {
                // TODO Auto-generated method stub
                   alist.remove(position);
                   adap.notifyDataSetChanged();
            }
        });

2 - 我建议在你的AlertDialog中添加editText，如下所示

else if(which==1){
   AlertDialog.Builder alertDialog=new AlertDialog.Builder(StikiNotesActivity.this);

   EditText txtPosition = new EditText(YourContext);
   alertDialog.setView(txtPosition); 
   alertDialog.setTitle("Selected Subject will be deleted");
   alertDialog.setPositiveButton("Ok", new DialogInterface.OnClickListener() {

       public void onClick(DialogInterface dialog, int id) {

             //get the position from txtPosition
             int position = Integer.parseInt(txtPosition.getText().toString());
             alist.remove(position);
             adap.notifyDataSetChanged();
             dialog.cancel();
       }
   });
   alertDialog.setNegativeButton("Cancel", null);
   alertDialog.show();

  }

希望这能帮到你

在Listview最后一个选项被删除，当我应用选项菜单，删除任何列表项目上的选项时，它只删除了最后一项我现在可以做什么？

1 个答案: