Question

我已经尝试过本网站上的建议而且他们不适合我。我会尽量精确。我有一个自定义图库，在gridview中显示图像。用户可以从gridview中选择多个图像。点击Gridview位置后，点击＆＃34; Tick＆＃34;该位置上显示图标以通知用户已选择图像。问题是当我选择一个图像并滚动＆＃34; Ticked＆＃34;所选图像上的图标出现在其他图像上。这是代码。

    public class CustomPhotoGalleryActivity extends Activity {

private GridView grdImages;
private Button btnSelect;

private ImageAdapter imageAdapter;
private String[] arrPath;
private boolean[] thumbnailsselection;
private int ids[];
private int count;
private Cursor imagecursor = null;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.custom_gallery);
    grdImages = (GridView) findViewById(R.id.grdImages);
    btnSelect = (Button) findViewById(R.id.btnSelect);
    final String[] columns = {MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID};
    final String orderBy = MediaStore.Images.Media._ID;
    imagecursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null, orderBy);
    int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
    this.count = imagecursor.getCount();
    this.arrPath = new String[this.count];
    ids = new int[count];
    this.thumbnailsselection = new boolean[this.count];
    for (int i = 0; i < this.count; i++) {
        imagecursor.moveToPosition(i);
        ids[i] = imagecursor.getInt(image_column_index);
        int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
        arrPath[i] = imagecursor.getString(dataColumnIndex);

        Log.e("arrPath", "" + arrPath[i]);
    }
    imageAdapter = new ImageAdapter(arrPath);
    grdImages.setAdapter(imageAdapter);

    btnSelect.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            final int len = thumbnailsselection.length;
            int cnt = 0;
            String selectImages = "";
            for (int i = 0; i < len; i++) {
                if (thumbnailsselection[i]) {
                    cnt++;
                    selectImages = selectImages + arrPath[i] + "|";
                }
            }
            if (cnt == 0) {
                Toast.makeText(getApplicationContext(), "Please select at least one image", Toast.LENGTH_LONG).show();
            } else {

                Log.d("SelectedImages", selectImages);
                Intent i = new Intent();
                i.putExtra("data", selectImages);
                setResult(Activity.RESULT_OK, i);
                finish();
            }
        }
    });
}
public class ImageAdapter extends BaseAdapter {
    private LayoutInflater mInflater;
    private String[] arrPath;

    public ImageAdapter(String[] arrPath) {
        this.arrPath = arrPath;
        mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public int getViewTypeCount() {
        return arrPath.length;
    }


    public int getCount() {
        return count;
    }

    public Object getItem(int position) {
        return position;
    }

    public long getItemId(int position) {
        return position;
    }

    public View getView(final int position, View convertView, ViewGroup parent) {
        View rootView = convertView;
        final ViewHolder holder;
        if (convertView == null) {
            holder = new ViewHolder();
            rootView = mInflater.inflate(R.layout.custom_gallery_item, null);
            holder.imgThumb = (ImageView) rootView.findViewById(R.id.imgThumb);
            holder.chkImage = (ImageView) rootView.findViewById(R.id.chkImage);
            rootView.setTag(holder);
        } else {
            holder = (ViewHolder) rootView.getTag();

        }
        holder.chkImage.setId(position);
        holder.imgThumb.setId(position);
        holder.imgThumb.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                int id = holder.chkImage.getId()
                if (thumbnailsselection[id]) {
                    holder.chkImage.setVisibility(View.GONE);
                    thumbnailsselection[id] = false;
                } else {
                    holder.chkImage.setVisibility(View.VISIBLE);
                    thumbnailsselection[id] = true;
                }
            }
        });
        Picasso.with(CustomPhotoGalleryActivity.this)
                .load(new File(arrPath[position]))
                .resize(150, 150)
                .centerCrop()
                .into(holder.imgThumb);
        return rootView;
    }
}

class ViewHolder {
    ImageView imgThumb;
    ImageView chkImage;
    int id;
}
}

Answer 1

这样做对我有用，

Intent intent = new Intent(getActivity(), CameraMenu.class);
intent.putExtra(TAG_1, stuff_1);
intent.putExtra(TAG_2, stuff_2);
startActivityForResult(intent, ACT_TAG);

滚动时，检查的Gridview位置会发生变化

1 个答案: