android - 当我一次又一次滚动 ListView 时应用程序崩溃

Question

我使用了 ListView 并且有超过 65,000 条记录，滚动不是快速和流畅，而且如果我一次又一次地滚动它应用程序崩溃，没有任何错误或任何 ANR 对话框，任何人都可以帮助我来解决这个问题？

我正在使用 SimpleCursorLoader 和 CursorAdapter 下面是我的代码:

   private static class DotCursorLoader extends SimpleCursorLoader {

    private DbHelper mHelper;
    private CharSequence filter;

    public DotCursorLoader(Context context, DbHelper helper,
            CharSequence filter) {
        super(context);
        mHelper = helper;
        this.filter = filter;
    }

    @Override
    public Cursor loadInBackground() {

        return mHelper.getCursor(filter);
    }

}

private class DotCursorAdapter extends CursorAdapter {

    private Context mContext;
    private Typeface font;

    public class ViewHolder {
        TextView txtEng, txtGuj;
    }

    // public DotCursorAdapter(Context context, Cursor c, int flags) {
    // super(context, c, flags);
    // mContext = context;
    // }

    public DotCursorAdapter(Context context, Cursor c,
            boolean autoRequery) {
        super(context, c, autoRequery);
        mContext = context;

    }

    @Override
    public void bindView(View view, Context context,
            android.database.Cursor cursor) {
        ViewHolder holder = (ViewHolder) view.getTag();
        if (LibConstants.isEnglishEnabled(mActivity)) {

            holder.txtEng.setTextColor(settings.getInt(
                    LibConstants.English_Pref_Color_Key,
                    Color.BLACK));
            // txtEng.setTypeface(Typeface.DEFAULT);
            holder.txtEng.setTextSize(Integer.parseInt(settings
                    .getString("TextSize", "20")));
            holder.txtEng.setText(LibConstants.getWord(cursor
                    .getString(1)));
            Utils.setEnglishFont(holder.txtEng, mActivity);

            holder.txtGuj.setTextColor(settings.getInt(
                    LibConstants.Mean_Pref_Color_Key,
                    getResources().getInteger(
                            R.color.blue)));

            holder.txtGuj.setTypeface(font);
            holder.txtGuj.setTextSize(Integer.parseInt(settings
                    .getString("TextSize", "20")));
            holder.txtGuj.setText(LibConstants.getWord(cursor
                    .getString(2)));

        } else {

            holder.txtEng.setTextColor(settings
                    .getInt(LibConstants.Mean_Pref_Color_Key,
                            getResources().getColor(
                                    R.color.blue)));
            holder.txtEng.setTypeface(font);
            holder.txtEng.setTextSize(Integer.parseInt(settings
                    .getString("TextSize", "20")));
            holder.txtEng.setText((cursor
                    .getString(2)));

            holder.txtGuj.setTextColor(settings.getInt(
                    LibConstants.English_Pref_Color_Key,
                    Color.BLACK));
            holder.txtGuj.setTypeface(Typeface.DEFAULT);
            holder.txtGuj.setTextSize(Integer.parseInt(settings
                    .getString("TextSize", "20")));
            holder.txtGuj.setText(cursor
                    .getString(1));
            Utils.setEnglishFont(holder.txtGuj, mActivity);
        }

    }

    @Override
    public View newView(Context context,
            android.database.Cursor cursor, ViewGroup parent) {
        View view = LayoutInflater.from(mContext).inflate(
                R.layout.list_item, parent, false);
        ViewHolder viewHolder = new ViewHolder();
        viewHolder.txtEng = (TextView) view
                .findViewById(R.id.txtEng);
        viewHolder.txtGuj = (TextView) view
                .findViewById(R.id.txtGuj);
        view.setTag(viewHolder);
        return view;
    }

}

Answer 1

可以在这里找到 Endless Adapter 的最佳示例之一

https://github.com/commonsguy/cwac-endless