2

リスト ビューが getView でクラッシュします。アプリケーションが最初にロードされたときはうまく動作しますが、アプリケーションから離れたり、スクリーンショットを撮ってアプリを共有しようとするとすぐにクラッシュします。これがカスタムアダプターです。

public class CustomAdapter extends BaseAdapter
{
private List<AlarmItem> alarms;
private Context context;

public CustomAdapter(List<AlarmItem> alarms,Context context)
{
    this.context = context;
    this.alarms = alarms;
}


@Override
public int getCount() {
    return alarms.size();
}

@Override
public AlarmItem getItem(int position) {
    return alarms.get(position);
}

@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent)
{

    final AlarmItem item = getItem(position);
    Holder holder;

    if(convertView==null)
    {
        LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = layoutInflater.inflate(R.layout.my_alarm_row,parent,false);
        holder = new Holder();
        holder.image= (RoundedImageView)convertView.findViewById(R.id.picture);
        holder.wakeText =(RobotoLight)convertView.findViewById(R.id.waketext);
        holder.name =(RobotoRegular)convertView.findViewById(R.id.name);
        holder.period = (RobotoLight)convertView.findViewById(R.id.period);
        holder.time = (RobotoRegular)convertView.findViewById(R.id.time);
        holder.day1 =(RobotoLight)convertView.findViewById(R.id.day1);
        holder.day2 =(RobotoLight)convertView.findViewById(R.id.day2);
        holder.day3 =(RobotoLight)convertView.findViewById(R.id.day3);
        holder.day4 =(RobotoLight)convertView.findViewById(R.id.day4);
        holder.day5 =(RobotoLight)convertView.findViewById(R.id.day5);
        holder.day6 =(RobotoLight)convertView.findViewById(R.id.day6);
        holder.day7 =(RobotoLight)convertView.findViewById(R.id.day7);
    }
    else
    {
        holder = (Holder)convertView.getTag();
    }


    UrlImageViewHelper.setUrlDrawable(holder.image, "http://graph.facebook.com/" + item.getProfileId().trim() + "/picture?style=large");


    holder.wakeText.setText(context.getString(R.string.wake_message));
    holder.name.setText(item.getName()+" ");
    holder.period.setText(item.getPeriod());
    holder.time.setText(item.getTime());

    /**
     * This block code places sets the color of the particular day. If its active
     * It sets it to a particular colour if not then the inactive colour remains.
     */
    List<RobotoLight> dayList = new ArrayList<RobotoLight>();
    dayList.add(holder.day1);
    dayList.add(holder.day2);
    dayList.add(holder.day3);
    dayList.add(holder.day4);
    dayList.add(holder.day5);
    dayList.add(holder.day6);
    dayList.add(holder.day7);


    for(int x=0;x<7;x++)
    {
        /**
         * if the day at a particular point in the string is equal to one that means its active
         * therefore set active color.
         */
        if(item.getDays().charAt(x) == '1')
        {
             dayList.get(x).setTextColor(R.color.alarm_day_active);
        }
        else
        {
            dayList.get(x).setTextColor(R.color.alarm_day_inactive);
        }
    }


    return convertView;
}

public static class Holder
{

    RoundedImageView image;
    RobotoLight wakeText;
    RobotoRegular name;
    RobotoLight period;
    RobotoRegular time;
    RobotoLight day1;
    RobotoLight day2;
    RobotoLight day3;
    RobotoLight day4;
    RobotoLight day5;
    RobotoLight day6;
    RobotoLight day7;
}



}

この私の丸太猫

    09-04 08:02:45.948: ERROR/AndroidRuntime(9402): FATAL EXCEPTION: main
    java.lang.NullPointerException
    at com.wake.friend.adapter.AlarmAdapter.getView(AlarmAdapter.java:82)
    at android.widget.AbsListView.obtainView(AbsListView.java:2334)
    at android.widget.ListView.makeAndAddView(ListView.java:1937)
    at android.widget.ListView.fillSpecific(ListView.java:1483)
    at android.widget.ListView.layoutChildren(ListView.java:1765)
    at android.widget.AbsListView.onLayout(AbsListView.java:2178)
    at android.view.View.layout(View.java)
    at android.view.ViewGroup.layout(ViewGroup.java:4380)
    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:948)
    at android.view.View.layout(View.java)
    at android.view.ViewGroup.layout(ViewGroup.java:4380)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:448)
    at android.view.View.layout(View.java)
    at android.view.ViewGroup.layout(ViewGroup.java:4380)
    at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1141)
    at android.view.View.layout(View.java)

そして、ヌルポインター例外がスローされていると彼らが言っている82行目はこれです。

UrlImageViewHelper.setUrlDrawable(holder.image, "http://graph.facebook.com/" + item.getProfileId().trim() + "/picture?style=large");

画像ダウンロード ヘルパーを使用して、Web から画像を取得しています。

4

2 に答える 2

0

たぶんitem.getProfileId()nullを返します。

于 2013-09-04T13:07:23.637 に答える