实现从相册中选择图片回显问题可以删除

最近在做一个退款模块，要求上传凭证，但是凭证上可以删除的。

就是图片这种效果

<GridView    android:id="@+id/gv_apply_refund_pics"    android:layout_width="match_parent"    android:layout_height="108dp"    android:background="@color/white"    android:cacheColorHint="#00000000"    android:checked="false"    android:clickable="false"    android:columnWidth="108dp"    android:focusable="false"    android:focusableInTouchMode="false"    android:gravity="center"    android:horizontalSpacing="1.0dp"    android:listSelector="#00000000"    android:numColumns="auto_fit"    android:scrollbars="none"    android:stretchMode="spacingWidthUniform"    android:verticalSpacing="1.0dip"></GridView>

首先将项目的资源图片插入到图片集合里面

可以先存一下临时地址，之后删除这个地址，楼主没有做这个操作

private void addFirstPic() {    ImageView imageView = new ImageView(this);    imageView.setBackgroundResource(R.drawable.pic_shangchuan);    Bitmap bm = ((BitmapDrawable) imageView.getBackground()).getBitmap();    File f = new File("/sdcard/", System.currentTimeMillis() + "add.pic");    if (f.exists()) {        f.delete();    }    try {        FileOutputStream out = new FileOutputStream(f);        bm.compress(Bitmap.CompressFormat.PNG, 90, out);        out.flush();        out.close();    } catch (FileNotFoundException e) {        // TODO Auto-generated catch block        e.printStackTrace();    } catch (IOException e) {        // TODO Auto-generated catch block        e.printStackTrace();    }    pic.add(f.getAbsolutePath());}

gv_pics.setOnItemClickListener(new AdapterView.OnItemClickListener() {    @Override    public void onItemClick(AdapterView<?> adapterView, View view, final int position, long l) {        if (position == pic.size() - 1) {            Intent intent = new Intent(ApplyRefundActivity.this, ImageGridActivity.class);            //实现跳转            startActivityForResult(intent, CHOOSEPHOTO_REQUEST_CODE);        }        ImageView iv_pic_del = (ImageView) view.findViewById(R.id.iv_pic_del);        iv_pic_del.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                pic.remove(position);                picAdapter.notifyDataSetChanged();                if (pic.size() == 0) {                    addFirstPic();                }                picAdapter.notifyDataSetChanged();            }        });    }});

@Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);//        //onActivityResult里一行代码回调        if (data != null) {            if (resultCode == ImagePicker.RESULT_CODE_ITEMS) {                if (data != null && requestCode == CHOOSEPHOTO_REQUEST_CODE) {                    ArrayList<ImageItem> mImages = (ArrayList<ImageItem>) data.getSerializableExtra(ImagePicker.EXTRA_RESULT_ITEMS);                    pic.clear();                    for (int i = 0; i < mImages.size(); i++) {                        pic.add(mImages.get(i).path);                    }                    addFirstPic();                    picAdapter.notifyDataSetChanged();                } else {                    Toast.makeText(this, "没有数据", Toast.LENGTH_SHORT).show();                }            }        }    }

public class PicSelectAdapter extends BaseAdapter {    private Activity mActivity;    private List<String> images;    private int clickItemIndex = -1;//根据这个变量来辨识选中的current值    public PicSelectAdapter(Activity activity, List<String> mImages) {        mActivity = activity;        images = mImages;    }    @Override    public int getCount() {        return images.size();    }    @Override    public Object getItem(int i) {        return null;    }    @Override    public long getItemId(int i) {        return 0;    }    @Override    public View getView(final int i, View view, ViewGroup viewGroup) {        final PicViewHolder holder;        if (view == null) {            view = View.inflate(mActivity, R.layout.item_pic, null);            holder = new PicViewHolder(view);            view.setTag(holder);        } else {            holder = (PicViewHolder) view.getTag();        }        Bitmap bitMBitmap = getSmallBitmap(images.get(i));        holder.iv_pic.setImageBitmap(bitMBitmap);//为ImageView设置图片资源

//因为上传凭证只有三张所以进行了一下限制        if (images.size() == 4) {            if ((images.size() - 1) == i) {                holder.iv_pic_del.setVisibility(View.GONE);                holder.iv_pic.setVisibility(View.GONE);            } else {                holder.iv_pic.setVisibility(View.VISIBLE);                holder.iv_pic_del.setVisibility(View.VISIBLE);            }        } else if (images.size() == 1) {            holder.iv_pic.setVisibility(View.VISIBLE);            holder.iv_pic_del.setVisibility(View.GONE);        } else {            if ((images.size() - 1) == i) {                holder.iv_pic_del.setVisibility(View.GONE);                holder.iv_pic.setVisibility(View.VISIBLE);            } else {                holder.iv_pic.setVisibility(View.VISIBLE);                holder.iv_pic_del.setVisibility(View.VISIBLE);            }        }        if (holder.iv_pic_del.getVisibility() == View.VISIBLE) {            if (i == clickItemIndex) {                holder.iv_pic_del.setOnClickListener(new View.OnClickListener() {                    @Override                    public void onClick(View v) {                        images.remove(clickItemIndex);                        if (images.size() == 0) {                            ImageView imageView = new ImageView(mActivity);                            imageView.setBackgroundResource(R.drawable.pic_shangchuan);                            Bitmap bm = ((BitmapDrawable) imageView.getBackground()).getBitmap();                            File f = new File("/sdcard/WeiMiLife/", "add.pic");                            if (f.exists()) {                                f.delete();                            }                            try {                                FileOutputStream out = new FileOutputStream(f);                                bm.compress(Bitmap.CompressFormat.PNG, 90, out);                                out.flush();                                out.close();                            } catch (FileNotFoundException e) {                                // TODO Auto-generated catch block                                e.printStackTrace();                            } catch (IOException e) {                                // TODO Auto-generated catch block                                e.printStackTrace();                            }                            images.add(f.getAbsolutePath());                        }                        notifyDataSetChanged();                    }                });            }        }        return view;    }    // 根据路径获得图片并压缩，返回bitmap用于显示    public static Bitmap getSmallBitmap(String filePath) {        final BitmapFactory.Options options = new BitmapFactory.Options();        options.inJustDecodeBounds = true;        BitmapFactory.decodeFile(filePath, options);        // Calculate inSampleSize        options.inSampleSize = calculateInSampleSize(options, 1080, 1920);        // Decode bitmap with inSampleSize set        options.inJustDecodeBounds = false;        return BitmapFactory.decodeFile(filePath, options);    }    //计算图片的缩放值    public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {        final int height = options.outHeight;        final int width = options.outWidth;        int inSampleSize = 1;        if (height > reqHeight || width > reqWidth) {            final int heightRatio = Math.round((float) height / (float) reqHeight);            final int widthRatio = Math.round((float) width / (float) reqWidth);            inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;        }        return inSampleSize;    }    class PicViewHolder {        private final ImageView iv_pic;        private final ImageView iv_pic_del;        public PicViewHolder(View view) {            iv_pic = (ImageView) view.findViewById(R.id.iv_pic);            iv_pic_del = (ImageView) view.findViewById(R.id.iv_pic_del);        }    }}