Question

Hello stackoverflow我试图开发一个显示来自SD卡和捕获的相机的图像的应用程序，并允许用户使用复选框删除图像。我可以通过复选框显示来自SD卡和相机的图像，但是我无法删除用户动态勾选的特定或多个图像。这是我的MainActivity.java

imgDeleteImagesFromGallery = (ImageView) findViewById(R.id.imgDeleteImage);
        imgDeleteImagesFromGallery.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v)
            {
                ArrayList<String> selectedItems = gridAdapter.getCheckedItems();
                Log.e("data "," size = "+imgItemArray.size() + " & selectedItems size = " +selectedItems.size() + "Total photos selected: "+selectedItems.size());
                Log.e(AddPost.class.getSimpleName(), "Selected Items: " + selectedItems.toString() + " Data Selected Items: "+ imgItemArray.toString());

                for(int i = 0 ; i < selectedItems.size()-1 ; i++)
                {
                    imgItemArray.remove(i);
                }

               gridAdapter.notifyDataSetChanged();

            }
        });

这是来自适配器类

的getView（）方法

 @Override
        public View getView(final int position, View convertView, ViewGroup parent)
        {
            View row = convertView;
            final ViewHolder holder;

            if (row == null)
            {
                LayoutInflater inflater = ((Activity) context).getLayoutInflater();
                row = inflater.inflate(layoutResourceId, parent, false);
                holder = new ViewHolder();

                holder.image = (ImageView) row.findViewById(R.id.image);
                holder.checkbox = (CheckBox) row.findViewById(R.id.itemCheckBox);
                row.setTag(holder);
            }
            else
            {
                holder = (ViewHolder) row.getTag();
            }
            final BitmapItems item = imgItemArray.get(position);
            holder.image.setImageBitmap(item.getBitmap());

            holder.checkbox.setTag(position);
            holder.checkbox.setChecked(mSparseBooleanArray.get(position));
            holder.checkbox.setOnCheckedChangeListener(mCheckedChangeListener);
            return row;
        }

        CompoundButton.OnCheckedChangeListener mCheckedChangeListener = new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
            {
                // TODO Auto-generated method stub
                mSparseBooleanArray.put((Integer) buttonView.getTag(), isChecked);
                Log.e("Is ", " Checked !!!");
                imgItemArray.remove((Integer) buttonView.getTag());
            }
        };

当我勾选前2个图像进行删除时，会出现 java.lang.IndexOutOfBoundsException错误：索引1无效，大小为1

for(int i = 0 ; i < selectedItems.size()-1 ; i++)
                {
                    imgItemArray.remove(i);
                }

这是我的日志猫信息

10-27 10:43:31.945    4375-4375/com.example.tazeen.classnkk E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.example.tazeen.classnkk, PID: 4375
    java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
            at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
            at java.util.ArrayList.remove(ArrayList.java:403)
            at com.example.tazeen.classnkk.AddPost$2.onClick(AddPost.java:248)
            at android.view.View.performClick(View.java:4756)
            at android.view.View$PerformClick.run(View.java:19748)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5254)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:898)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:693)

提前致谢。

Answer 1

当你从ArrayList中删除第一个元素时，它的大小减少到1.现在，arraylist中的最大索引变为0.尝试使用此代码：

    for(int i = selectedItems.size()-1 ; i >= 0 ; i--)
            {
                imgItemArray.remove(i);
            }

编辑：您需要更改gridAdapter。它不应该返回所选项的ArrayList，它应该返回所选索引的arraylist。然后，您的selectedItems列表将包含所选索引。在此之后，请执行：

    for(int i = selectedItems.size()-1 ; i >= 0 ; i--)
            {
                imgItemArray.remove(selectedItems.get(i));
            }

Android：删除多个所选图片

1 个答案: