Question

我创建了一个列表视图demo.list已成功创建，图像也正确地添加到右侧。现在我想要当我点击列表视图中行的右侧的交叉图像时，那行将被删除。如何做到这一点。

 public class MainActivity extends Activity {

            EditText editText;
            Button Button,Button1;
            ListView listView;
            ArrayList<String> listItems;
            BaseAdapter adapter;

            @Override
            public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);


                editText = (EditText) findViewById(R.id.editText);
              //  int pos = editText.getText().length();
                //editText.setSelection(pos);
                Button = (Button) findViewById(R.id.Button);
                listView = (ListView) findViewById(R.id.listview);
                //listView.setSelection(listView.getAdapter().getCount()-1);


                listItems = new ArrayList<String>();
                //listItems.add("First item");

                //code to only set the simple text in the listview
                //adapter = new ArrayAdapter<String>(this, R.layout., listItems);


                //Here is the creation of new anonymous class,because we can not create subclass inside any method so we create anonymous class inside the on create method
                adapter =new BaseAdapter() 
                {

                    @Override
                    public View getView(int arg0, View arg1, ViewGroup arg2)
                    {
                        // arg1 is the particular row position in list view weather the arg0 is the whole list view
                        // layout inflater for setting the text or an image on row in list view
                        LayoutInflater inflater = getLayoutInflater();
                        arg1 = inflater.inflate(R.layout.custom, null);
                        TextView textview = (TextView)arg1. findViewById(R.id.textView1);
                        textview.setText(listItems.get(arg0));
                        return arg1;
                    }

                    @Override
                    public long getItemId(int arg0) {
                        // TODO Auto-generated method stub
                        return 0;
                    }

                    @Override
                    public Object getItem(int arg0) {
                        // TODO Auto-generated method stub
                        return null;
                    }

                    @Override
                    public int getCount() {
                        // TODO Auto-generated method stub
                        return listItems.size();
                    }
                };

                listView.setAdapter(adapter);


                Button.setOnClickListener(new View.OnClickListener() {

                    public void onClick(View v) {
                        listItems.add(editText.getText().toString());
                        adapter.notifyDataSetChanged();

                        // code to display the previous added text in front through edit text in
                        listView.setSelection(listView.getAdapter().getCount()-1);
                        //code to clear edit text after enter the text in list view
                        editText.getText().clear();
                          }
                         });

                listView.setOnItemClickListener(new OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> a, View v, int position,
                            long id) {
                        Toast.makeText(MainActivity.this, "Item has been added into your list", Toast.LENGTH_LONG)
                                .show();
                    }
                });


            }
        }

Answer 1

listItems.remove(position);

此处的位置是您的列表行ID

notifyDataSetChanged();

Answer 2

向listItem添加删除按钮，或将onClickListener添加到图像

@Override
public View getView(int position, View convertView, ViewGroup parent) 
{
    View row = null;
    LayoutInflater inflater = getLayoutInflater();
    row = inflater.inflate(R.layout.one_result_details_row, parent, false);
    ImageView image= (ImageView) row.findViewById(R.id.your_image);
     image.setTag(position);

    image.setOnClickListener(
        new OnClickListener() {
            @Override
            public void onClick(View v) {
                Integer index = (Integer) view.getTag();
                listItems.remove(index.intValue());  
                notifyDataSetChanged();
            }
        }
    );

Answer 3

close.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            values.remove(position);
            SaleProductListAdapter.this.notifyDataSetChanged();
        }
    });

如何从Android中的列表视图中删除行项？

3 个答案: