在屏幕外滚动时,ListView中的复选框会发生变化

时间:2012-01-12 16:12:39

标签: android android-listview simplecursoradapter

我遇到了烦恼,我无法在任何地方找到答案。我在这里。

我有一个ListFragment,我在其中放置从数据库中检索的数据。我已经扩展了SimpleCursorAdapter类并根据我的需要对其进行了调整。

我的ListView项目如下所示:

<?xml version="1.0" encoding="utf-8"?>

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:orientation="horizontal"
        android:padding="5dp" >

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/txtDetailsListAmount"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:singleLine="true"
                android:text="Amount"
                android:textSize="23dp" />

            <TextView
                android:id="@+id/txtDetailsListComment"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:singleLine="true"
                android:text="Comment"
                android:textSize="15dp" />
        </LinearLayout>

        <CheckBox
            android:id="@+id/chkDetailsDebt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:visibility="gone" />

    </LinearLayout>

一旦调用startActionMode,就会显示隐藏的复选框。此复选框的目的是能够选择多个列表项并立即删除所有这些项。

因此,当只有几个条目而不需要滚动时,删除工作正常。然而,一旦我能够滚动并且视图被回收,所选列表项将会改变。

我见过解决方案,但他们使用ArrayAdapters而不是扩展的SimpleCursorAdapter。

这是我的自定义SimpleCursorAdapter:

 public class CustomDetailsCursorAdapter extends SimpleCursorAdapter {

        private DetailsActivity activity;


        @SuppressWarnings("deprecation")
        public CustomDetailsCursorAdapter(Context context, int layout, Cursor c,
                String[] from, int[] to, Activity activity) {
            super(context, layout, c, from, to);
        }


        @Override
        public View newView(Context context, Cursor cursor, ViewGroup parent) {
            LayoutInflater inflater = LayoutInflater.from(context);
            View v = inflater.inflate(R.layout.details_custom_list_item, parent,
                    false);
            bindView(v, context, cursor);
            return v;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            return super.getView(position, convertView, parent);
        }
        @Override
        public void bindView(View view, Context context, Cursor cursor) {
            view.setTag(cursor.getString(cursor.getColumnIndex(Persons.COLUMN_ID)));
            TextView name = (TextView) view
                    .findViewById(R.id.txtDetailsListComment);
            String comment = cursor.getString(cursor
                    .getColumnIndex(Debts.COLUMN_COMMENT));
            if(comment.equals("")){
                comment = "-";
            }
            name.setText(comment);

            TextView debt = (TextView) view.findViewById(R.id.txtDetailsListAmount);
            double amount = Double.parseDouble(cursor.getString(cursor
                    .getColumnIndex(Debts.COLUMN_AMOUNT)));

            DecimalFormat df = new DecimalFormat("#.##");
            debt.setText(activity.getCurrency()+df.format(amount));
            boolean isMyDebt;
            if (cursor.getInt((cursor.getColumnIndex(Debts.COLUMN_IS_MY_DEBT))) == 0) {
                isMyDebt = false;
            } else {
                isMyDebt = true;
            }
            if (!isMyDebt) {

                debt.setTextColor(activity.getResources().getColor(
                        R.color.LawnGreen));
            } else {
                debt.setTextColor(activity.getResources().getColor(
                        R.color.Red));
            }


        }

    }

0 个答案:

没有答案