Android notifyDataSetChanged未刷新listview片段

我在谷歌上搜索了尽可能多的内容，我在这里搜索了尽可能多的内容，我真是不知所措，我的同事帮不了忙，我只想有人看看这个，告诉我是什么原因导致listview无法刷新数据。日志显示包含正确数量的元素，但未显示在列表中

public class ShiftListViewFragment extends Fragment {
    private static int TOTAL_ITEMS = 11;
    private static String TAG = "ShiftListViewFragment";
    private ListView mListView;
    private ShiftItemArrayAdapter mAdapter;
    private ArrayList<ShiftItem> mShiftItems = new ArrayList<ShiftItem>();
    ;
    private ArrayList<ShiftItem> displayShiftItems = new ArrayList<ShiftItem>();
    private Button mPageLeftButton;
    private Button mPageRightButton;

    private int mPageNumber = 0;
    private int mPageIndex = 0;

    public static ShiftListViewFragment newInstance() {
        ShiftListViewFragment shiftListViewFragment = new ShiftListViewFragment();

        return shiftListViewFragment;
    }

    public ShiftListViewFragment() {

    }

    public void populateShiftItems() {
        Date clockIn = new Date("08/17/2015 11:11 AM");
        Date clockOut = new Date("08/17/2015 11:11 PM");
        Date breakTimeIn = new Date("08/17/2015 10:11 PM");
        Date breakTimeOut = new Date("08/17/2015 10:11 PM");
        for (int i = 0; i < 28; i++) {
            ShiftItem shiftItem =
                    new ShiftItem(new ShiftDto(clockIn, clockOut, breakTimeIn, breakTimeOut));
            mShiftItems.add(shiftItem);
        }
    }

    public void populateDisplayShifts() {
        int lowerBound = mPageIndex * 11;
        int uppBound = lowerBound + 11;
        if (uppBound > mShiftItems.size()) {
            uppBound = mShiftItems.size();
        }
        ArrayList<ShiftItem> shifts = new ArrayList<ShiftItem>();
        for (int i = lowerBound; i < uppBound; i++) {
            shifts.add(mShiftItems.get(i));
        }
        displayShiftItems.clear();
        mAdapter.clear();
        displayShiftItems.addAll(shifts);
        mAdapter.notifyDataSetChanged();
    }

    public int getPageNumber() {
        int pages = 0;
        pages = mShiftItems.size() / TOTAL_ITEMS;

        if (pages % 11 != 0) {
            pages++;
        }
        Log.d("TAG", "TotalPages " + pages);
        Log.d("TAG", "Shift items count:" + mShiftItems.size());

        return pages;
    }

    private void initViews(View view) {
        mListView = (ListView)view.findViewById(R.id.shift_report_list);
        mPageLeftButton = (Button)view.findViewById(R.id.btn_page_left);
        mPageRightButton = (Button)view.findViewById(R.id.btn_page_right);
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        final View view = inflater.inflate(R.layout.shift_list_report_fragment, null);
        initViews(view);
        populateShiftItems();
        mPageNumber = getPageNumber();
        mAdapter = new ShiftItemArrayAdapter(getActivity(), R.layout.shift_list_item,
                displayShiftItems,
                R.color.shift_list_item_bg);
        mListView.setAdapter(mAdapter);
        populateDisplayShifts();
        mPageRightButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mPageIndex++;
                if (mPageIndex > mPageNumber - 1) {
                    mPageIndex = 0;
                }
                populateDisplayShifts();
                Log.d(TAG, "Page:" + mPageIndex + " Actual items in list:" + mAdapter.getCount());
            }
        });

        mPageLeftButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mPageIndex--;
                if (mPageIndex < 0) {
                    mPageIndex = mPageNumber - 1;
                }
                populateDisplayShifts();

                Log.d(TAG, "Page:" + mPageIndex + " Actual items in list:" + mAdapter.getCount());
            }
        });

        return view;
    }
}

我的适配器呢

public class ShiftItemArrayAdapter extends ArrayAdapter<ShiftItem> {
    private LayoutInflater mLayoutInflater;
    private int mAlternateColorResource;

    public ShiftItemArrayAdapter(Context context, int resource,
            ArrayList<ShiftItem> shiftItems,
            @ColorRes int colorResID) {
        super(context, resource, shiftItems);
        this.mAlternateColorResource = colorResID;
        this.mLayoutInflater = LayoutInflater.from(context);
    }

    /**
     * Applies background resources in an alternating fashion, based on the view's position.
     */
    protected void applyBackground(int position, @NonNull View convertView) {
        if (position % 2 == 0) {
            convertView.setBackgroundResource(mAlternateColorResource);
        } else {
            convertView.setBackgroundResource(android.R.color.white);
        }
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder = null;

        String clockedIn = getItem(position).getInTime();
        String clockedOut =
                getItem(position).getOutTime();

        if (convertView == null) {
            viewHolder = new ViewHolder();
            convertView = mLayoutInflater.inflate(R.layout.shift_list_item, null);
            viewHolder.clockedInTextView = (TextView)convertView.findViewById(R.id.time_in);
            viewHolder.clockedOutTextView = (TextView)convertView.findViewById(R.id.time_out);
            viewHolder.dashedTextView = (TextView)convertView.findViewById(R.id.dash);
            viewHolder.breakTotalTextView = (TextView)convertView.findViewById(R.id.break_total);
            viewHolder.totalTimeTextView = (TextView)convertView.findViewById(R.id.total_time);

            viewHolder.clockedInTextView.setText(clockedIn);
            viewHolder.clockedOutTextView.setText(clockedOut);

            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder)convertView.getTag();
        }

        Date breaksIn = new Date("11/11/2015 11:20 AM");
        Date breaksOut = new Date("11/11/2015 12:20 PM");
        String breakHours = String.valueOf(
                DateHelper.getTimeDuration(breaksIn, breaksOut, false).getStandardHours());
        String breakMin = String.valueOf(
                DateHelper.getTimeDuration(breaksIn, breaksOut, false).getStandardMinutes());
        viewHolder.breakTotalTextView.setText(breakHours + " HR " + breakMin + " MIN ");

        applyBackground(position, convertView);

        return convertView;
    }

    private class ViewHolder {
        public TextView clockedInTextView;
        public TextView dashedTextView;
        public TextView clockedOutTextView;
        public TextView breakTotalTextView;
        public TextView totalTimeTextView;
    }
}

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任何帮助都将不胜感激。

显然，Android中存在一个缺陷，listview中的列表项无法定义其实际大小，因此解决方案是将list_item.xml设置为特定的高度，而不是包装内容

帮我们和你自己一个忙，把代码减少到绝对最小，以便理解问题。您甚至可以在执行此操作时找到解决方案，因为它迫使您向自己解释代码。列表显示的是较少的项还是较多的项？它会添加但不会删除，当我使用clear时，它不会重新填充列表，只是为了测试，它不会更改任何内容，但是当我添加并且不清楚它添加到列表中时，你能发布你发现它是错误的链接吗？不是链接，只是通过测试发现的。