I am currently using a vertical viewpager for one of my applications. I currently have a task to take a photo and give an option to delete the photo and retake. I am able to capture and add all photos, but when i delete it, the item in that position disappears but when i scroll down i get the indexoutofbounds exception.
This is my code for the adapter:
private class BaseAdapterImpl extends PagerAdapter {
private View.OnClickListener mListener;
private final SimpleDateFormat mDateFormat;
private DisplayImageOptions options;
private TreeMap<Long, List<WashingPhoto>> mPhotoMapping;
private int mSize;
private Long[] mKeys;
List<List<WashingPhoto>> mPhotoList;
public BaseAdapterImpl(View.OnClickListener listener, Map<Long, List<WashingPhoto>> photoMap) {
//super(activity);
mListener = listener;
mDateFormat = new SimpleDateFormat("dd MMM yyyy");
mPhotoMapping = new TreeMap<>(photoMap);
mSize = mPhotoMapping.size();
mKeys = mPhotoMapping.keySet().toArray(new Long[mSize]);
options = new DisplayImageOptions.Builder()
.cacheInMemory(true)
.cacheOnDisk(true)
.considerExifParams(false)
.bitmapConfig(Bitmap.Config.RGB_565)
.showImageOnLoading(R.drawable.ic_main_logo)
.build();
}
@Override
public int getCount() {
return mSize;
}
public List<WashingPhoto> getItem(int position)
{
return mPhotoMapping.get(mKeys[position]);
}
public List<WashingPhoto> removeItem(int position)
{
return mPhotoMapping.remove(mKeys[position]);
}
public void removeKeys(int position)
{
ArrayList<Long> keys = new ArrayList<>(Arrays.asList(mKeys));
keys.remove(position);
}
@Override
public Object instantiateItem(ViewGroup container, final int position)
{
View inflate = getActivity().getLayoutInflater().inflate(R.layout.page_3shot, null);
container.addView(inflate);
ViewUtils.vuFind(inflate, R.id.layout_during).setVisibility(View.INVISIBLE);
mPhotoList = new ArrayList<List<WashingPhoto>>(mPhotoMapping.values());
List<WashingPhoto> photos = mPhotoList.get(position);
int photoSize = photos.size();
if (photoSize > 0)
{
PhotoType type = mTypes.get(Integer.parseInt(photos.get(0).washing_photo_type_id));
if (type != null)
{
ViewUtils.vuSetText(inflate, type.type_name, R.id.photo_subject_type_display);
} else
{
ViewUtils.vuSetText(inflate, "", R.id.photo_subject_type_display);
}
ImageView imageView;
for (int i = 0; i < photoSize; i++) {
// int washingType = Integer.parseInt(photos.get(i).washing_photo_type_id);
int washingType = photos.get(i).photo_type;
switch (washingType) {
case 2:
imageView = (ImageView) inflate.findViewById(R.id.img_before);
imageView.setImageDrawable(null);
if (!TextUtils.isEmpty(photos.get(i).photo_url)) {
ImageLoader.getInstance().displayImage(photos.get(i).photo_url, imageView, options);
}
break;
case 4:
imageView = (ImageView) inflate.findViewById(R.id.img_after);
imageView.setImageDrawable(null);
if (!TextUtils.isEmpty(photos.get(i).photo_url)) {
ImageLoader.getInstance().displayImage(photos.get(i).photo_url, imageView, options);
}
break;
}
}
}
inflate.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(final View view) {
final List<WashingPhoto> items = (List<WashingPhoto>) mAdapter.getItem(mPagerShot.getCurrentItem());
new AlertDialog.Builder(getActivity()).
setMessage("Delete this photo?").
setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (items != null && items.size() > 0) {
for (int i = 0; i < items.size(); i++) {
WashingPhoto p = items.get(i);
items.remove(i);
mPhotos.remove(p);
p.delete();
i--;
}
mAdapter.removeItem(position);
mAdapter.removeKeys(position);
notifyDataSetChanged();
if(mAdapter.getCount()<=0){
mGroupId = 0;
groupPhotos.clear();
groupPhotos.keySet().clear();
}
}
}
}).setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
}).create().show();
return true;
}
});
return inflate;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((LinearLayout) object);
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((LinearLayout) object);
}
@Override
public int getItemPosition(Object object) {
return PagerAdapter.POSITION_NONE;
}
I tried the solution mentioned in this post:[here][1]
[1]: how to delete item from viewpager and pageradapter and still I do get the OOB exception.
