Question

https://github.com/johannilsson/android-pulltorefresh

我从上面的链接中采取了示例..当项目数少于可滚动项目时，我无法刷新它。

以下是我的活动类

中的代码

@Override
public void onRefresh() {

    System.out.println("on refresh");
    // disAll();
    new GetDataTask().execute();
    // listDisply.onRefreshComplete();
}

private class GetDataTask extends AsyncTask<Void, Void, String[]> {

    @Override
    protected String[] doInBackground(Void... params) {
        // Simulates a background job.
        System.out.println("do in background");
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
        }
        return null;
    }

    @Override
    protected void onPostExecute(String[] result) {
        // mListItems.addFirst("Added after refresh...");
        System.out.println("on post execute");
        loadData();
        scAdapter.notifyDataSetChanged();

        // Call onRefreshComplete when the list has been refreshed.
        listDisply.onRefreshComplete();

        super.onPostExecute(result);
    }
}

oncreateview中的代码（我使用片段）

listDisply = (PullToRefreshListView) v.findViewById(R.id.lvList);
    listDisply.setOnRefreshListener(this);

我的代码为setAdapter列表视图..我自定义列表视图与上面的链接相同（PullToRefreshListView，位于库中）

cursor = db.getAllRecordsOfTransaction(search);
        if (cursor.getCount() > 0) {
            llNoTransaction.setVisibility(LinearLayout.GONE);
            cursor.moveToFirst();
            scAdapter = new SimpleCursorAdapter(getActivity()
                    .getApplicationContext(),
                    R.layout.list_notransactions, cursor,
                    new String[] { "business_name",
                            "total_amount",
                            "status",
                            "purchase_datetime" },
                    new int[] { R.id.buissness_nm,
                            R.id.total_amt,
                            R.id.status,
                            R.id.purchase_date }, 0);
            scAdapter.setViewBinder(new SimpleCursorAdapter.ViewBinder() {
                @Override
                public boolean setViewValue(View view,
                        Cursor cursor, int column) {
                    if (column == 4) {
                        if (cursor.getString(4)
                                .equals("1")) {
                            TextView stat = (TextView) view
                                    .findViewById(R.id.status);
                            stat.setText("Approved");
                        } else {
                            TextView stat = (TextView) view
                                    .findViewById(R.id.status);
                            stat.setText("DisApproved");
                        }

                        return true;
                    } else if (column == 5) {
                        TextView amt = (TextView) view
                                .findViewById(R.id.total_amt);
                        amt.setText("$"
                                + cursor.getString(4));
                        return true;
                    }

                    return false;
                }
            });
            System.out.println("scAdapter linearlayout visible");
            listDisply.setAdapter(scAdapter);
            listDisply.setSelection(1);

Answer 1

你确定你的上面的代码是相互链接的，因为GetDataTask在刷新后会显示mListItems但在编辑后的代码中我看不到该列表（mListItems）。您正在获取并将值从光标设置到列表。我建议您使用BaseApadter列出绑定数据，并在向其添加新数据后调用onRefreshComplete。如果您想使用SimpleCursorAdapter，也可以在此处查看此link。希望你明白我的意思。

当item的数量小于android中的可滚动项目时，pulltorefreshlistview无法正常工作

1 个答案: