Android listView长按删除

listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                AlertDialog.Builder builder = new AlertDialog.Builder(Activity10.this);
                builder.setTitle("提示！");
                builder.setMessage("确定删除？");
                builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        boolean isSuccess;
                        // 删除listView选择item的同时删除数据库中对应的信息
                        Database database = new Database(Activity10.this);
                        SQLiteDatabase db = database.getWritableDatabase();
                        String number = list.get(position).get("number");
                        String name = list.get(position).get("name");
                        String English_name = list.get(position).get("English_name");
                        String gender = list.get(position).get("gender");
                        String age = list.get(position).get("age");
                        try {
                            db.execSQL("delete from user where number = '" + number + "' and name = '" + name +
                                    "' and English_name = '" + English_name + "' and gender = '" + gender +
                                    "' and age = '" + age + "'");
                            Log.e("sql:", "delete from user where number = '" + number + "' and name = '" + name +
                                    "' and English_name = '" + English_name + "' and gender = '" + gender +
                                    "' and age = '" + age + "'");
                            Log.e("position", String.valueOf(position));
                            isSuccess = true;
                        } catch (SQLException e) {
                            e.printStackTrace();
                            isSuccess = false;
                        }

                        if (list.remove(position) != null) {
                            System.out.println("Success");
                        } else {
                            System.out.println("Failed");
                        }
                        if (isSuccess) {
                            adapter.notifyDataSetChanged();
                            Toast.makeText(Activity10.this, "已删除", Toast.LENGTH_LONG).show();
                        } else {
                            Toast.makeText(Activity10.this, "删除失败", Toast.LENGTH_LONG).show();
                        }

                    }
                });
                builder.setNegativeButton("取消", null);
                builder.create().show();
                // 返回true避免与点击事件冲突
                return true;
            }
        });