我在每个网格单元格中都有一个带有删除按钮的gridview。编码如下:
gd_view.invalidate();
gd_view.setAdapter(new SampleGridViewAdapter(Photos.this, local_links, local_id));
gd_view.setOnScrollListener(new SampleScrollListener(Photos.this));
gd_view.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
Utilities.custom_toast(Photos.this, "View big", ""+position, "short");
}
});
gd_view.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener()
{
public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int position, long arg3)
{
//Utilities.custom_toast(Photos.this, "LONG Press", ""+position, "short");
return true;
}
});
final class SampleGridViewAdapter extends BaseAdapter
{
Context context;
ArrayList<String> links = new ArrayList<String>();
ArrayList<Integer> id = new ArrayList<Integer>();
SampleGridViewAdapter adapter = this;
SampleGridViewAdapter(Context context, ArrayList<String> links, ArrayList<Integer> id)
{
this.context = context;
this.links = links;
this.id = id;
}
@Override
public int getCount()
{
return links.size();
}
@Override
public String getItem(int position)
{
return links.get(position);
}
@Override
public long getItemId(int position)
{
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView;
gridView = inflater.inflate(R.layout.inflated_gridview, null);
ImageView btn_delete = (ImageView) gridView.findViewById(R.id.btn_delete);
ImageView img_grid = (ImageView) gridView.findViewById(R.id.img_grid);
final TextView tv_ref = (TextView) gridView.findViewById(R.id.tv_ref);
final String url = getItem(position);
Picasso.with(context).load(url).fit().centerCrop().into(img_grid);
tv_ref.setText(""+id.get(position));
btn_delete.setTag(Integer.valueOf(position));
btn_delete.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
int photo_id = Integer.parseInt(tv_ref.getText().toString());
Records_Photo n = Select.from(Records_Photo.class).where(Condition.prop("photo_Id").eq(photo_id)).first();
n.delete();
links.remove((Integer) v.getTag());
id.remove((Integer) v.getTag());
ArrayList<String> newlinks = new ArrayList<>();
newlinks.addAll(links);
ArrayList<Integer> newid = new ArrayList<>();
newid.addAll(id);
links.clear();
links.addAll(newlinks);
id.clear();
id.addAll(newid);
adapter.notifyDataSetChanged();
}
});
return gridView;
}
}
btn_delete工作不正常,删除照片后gridview不会刷新。上述代码有什么问题?
谢谢。