Android ViewPager 删除当前页面并移至下一步

Question

在ViewPager中，当用户单击删除按钮时，我正在尝试删除当前页面并移动到下一页。 当我尝试下面的代码时，它会移动到下一页，但删除最后一页。请帮助我。

@Override
public Object instantiateItem(ViewGroup container, final int IdxVal)
{
LinearLayout linearLayout = new LinearLayout(context);
linearLayout.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
ImageView imageView = new ImageView(context);
imageView.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
Glide.with(context)
.load(imageListAryVar.get(IdxVal))
.fitCenter()
.into(imageView);
linearLayout.addView(imageView);
container.addView(linearLayout);
return linearLayout;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object)
{
container.removeView((LinearLayout) object);
}
void delCurrentPageFnc()
{
int delIdxVar = viewPager.getCurrentItem();
if(imageListAryVar.size() > 1)
{
if (delIdxVar == imageListAryVar.size() - 1)
viewPager.setCurrentItem(delIdxVar - 1);
else
viewPager.setCurrentItem(delIdxVar + 1);
imageListAryVar.remove(delIdxVar);
notifyDataSetChanged();
}
else finish();
}

Answer 1

经过几次尝试，我通过添加 getItemPosition 并设置返回POSITION_NONE来解决此问题;
如果您不添加此通知数据集已更改((;方法不起作用。

@Override
public int getItemPosition(Object object)
{
return POSITION_NONE;
}
void delCurrentPageFnc()
{
int delIdxVar = viewPager.getCurrentItem();
if(imageListAryVar.size() > 1)
{
imageListAryVar.remove(delIdxVar);
notifyDataSetChanged();
}
else finish();
}

设置getItemPosition后这是不必要的，所以删除了

if (delIdxVar == imageListAryVar.size() - 1) 
viewPager.setCurrentItem(delIdxVar - 1);
else 
viewPager.setCurrentItem(delIdxVar + 1);