Java 从回收器视图中删除项目时，回收器视图未刷新？

当我尝试从recyclerview完整图像活动中删除项目时，我调用onfinish方法返回到上一个活动，即recyclerviewGalleryActivity

但我删除的图像仍然可见，当我退出gallery活动并再次输入时，它将刷新

任何解决方案，以便在删除项目时可以刷新

这是我的Recyclerview适配器

公共类RecycleServiceAdapter扩展了RecyclerView.Adapter{

private ArrayList<String> yeniliste;
private Context context;

public RecyclerViewAdapter(Context context, ArrayList<String> itemList) {
    this.yeniliste = itemList;
    this.context = context;
}

@Override
public RecyclerViewHolders onCreateViewHolder(ViewGroup parent, int viewType) {
    View layoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.gallery_item, null);
    RecyclerViewHolders rcv = new RecyclerViewHolders(layoutView);
    return rcv;
}

@Override
public void onBindViewHolder(final RecyclerViewHolders holder, final int position) {
    Bitmap bitmap = BitmapFactory.decodeFile(yeniliste.get(position));
    holder.countryPhoto.setImageBitmap(bitmap);
    holder.countryPhoto.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(v.getContext(),GalleryFullImage.class);
            intent.putExtra("realid",String.valueOf(holder.getAdapterPosition()));
            v.getContext().startActivity(intent);
        }
    });
}

@Override
public int getItemCount() {
    return this.yeniliste.size();
}


public static class RecyclerViewHolders extends RecyclerView.ViewHolder implements View.OnClickListener{

    public ImageView countryPhoto;

    public RecyclerViewHolders(View itemView) {
        super(itemView);
        countryPhoto = (ImageView)itemView.findViewById(R.id.country_photo);
    }

    @Override
    public void onClick(View view) {
        Toast.makeText(view.getContext(), "Clicked Country Position = " + getAdapterPosition(), Toast.LENGTH_SHORT).show();

    }

}

public void removeItem(int position)
{
    yeniliste.remove(position);
    notifyItemRemoved(position);
    notifyItemRangeChanged(position, yeniliste.size());
}}

这是厨房活动

---

在厨房活动中这样做

@Override
protected void onResume() {
    super.onResume();
    if(rView != null){
      yourAdapter.notifyDataSetChanged();
    }

 };

---

使rView和适配器成为全局变量。

在setImage方法中设置代码，就像在onCreate和onResume中调用此方法一样：-

   public void setImage(){
   stringList.clear();
   String targetPath= 
    Environment.getExternalStorageDirectory().getAbsolutePath() + "/My Images/";
    File targetDirector = new File(targetPath);
    File[] files = targetDirector.listFiles();
Arrays.sort( files, new Comparator()
{
    public int compare(Object o1, Object o2) {

        if (((File)o1).lastModified() > ((File)o2).lastModified()) {
            return -1;
        } else if (((File)o1).lastModified() < ((File)o2).lastModified()) {
            return +1;
        } else {
            return 0;
        }
    }

});
for (File file : files){
    stringList.add(file.getAbsolutePath());
}

RecyclerView rView = (RecyclerView)findViewById(R.id.recycler_view);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getApplicationContext(),2);
rView.setHasFixedSize(true);
rView.setLayoutManager(layoutManager);
RecyclerViewAdapter rcAdapter = new RecyclerViewAdapter(getApplicationContext(), stringList);
rView.setAdapter(rcAdapter);

}

---

希望这有帮助；

您是否通知了适配器：是的，我有notifyAdapter，但仍然存在相同的问题？同时从列表中删除GalleryAdapterView中的哪个stringList是我的recyclerview，rcAdapter是我的适配器。编辑了答案解决方案正在工作，但存在问题。删除的图像消失，但替换为白色背景。以及当我单击白色背景时，出现了位于+1位置的图像。出现了问题。被删除的图像消失，但被替换为白色背景。当我单击白色背景时，出现了位于+1位置的图像。@t活动白色背景在完整图像活动或画廊活动中显示的图像。@t一旦我改变了答案，你就可以看到我的答案了！非常感谢！@TusharPingale欢迎

@Override
protected void onResume() {
    super.onResume();
    if(rView != null){
      yourAdapter.notifyDataSetChanged();
    }

 };

   public void setImage(){
   stringList.clear();
   String targetPath= 
    Environment.getExternalStorageDirectory().getAbsolutePath() + "/My Images/";
    File targetDirector = new File(targetPath);
    File[] files = targetDirector.listFiles();
Arrays.sort( files, new Comparator()
{
    public int compare(Object o1, Object o2) {

        if (((File)o1).lastModified() > ((File)o2).lastModified()) {
            return -1;
        } else if (((File)o1).lastModified() < ((File)o2).lastModified()) {
            return +1;
        } else {
            return 0;
        }
    }

});
for (File file : files){
    stringList.add(file.getAbsolutePath());
}

RecyclerView rView = (RecyclerView)findViewById(R.id.recycler_view);
RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getApplicationContext(),2);
rView.setHasFixedSize(true);
rView.setLayoutManager(layoutManager);
RecyclerViewAdapter rcAdapter = new RecyclerViewAdapter(getApplicationContext(), stringList);
rView.setAdapter(rcAdapter);

}