我尝试了很多不同的例子并阅读了很多堆栈溢出的答案和问题，但现在我丢失了...这是我正常设置的ArrayAdapter来填充listview
public class ChatAdapter extends ArrayAdapter<ParseObject> {
protected Context mContext;
protected List<ParseObject> mMessages;
public ChatAdapter(Context context, List<ParseObject> messages) {
super(context, R.layout.chat_item, messages);
mContext = context;
mMessages = messages;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView == null) {
convertView = LayoutInflater.from(mContext).inflate(R.layout.chat_item, null);
holder = new ViewHolder();
holder.userImageView = (ImageView) convertView.findViewById(R.id.userImage);
holder.chatImageView = (ParseImageView) convertView.findViewById(R.id.imageView);
holder.chatText = (TextView) convertView.findViewById(R.id.textLabel);
holder.usernameLabel = (TextView) convertView.findViewById(R.id.whenLabel);
holder.whenLabel = (TextView) convertView.findViewById(R.id.usernameLabel);
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
ParseObject message = mMessages.get(position);
INSERT ANSWER
if (message.getParseFile("image") != null) {
holder.chatImageView.setVisibility(View.VISIBLE);
String chatImageFile = message.getParseFile("image").getUrl();
Picasso.with(mContext)
.load(chatImageFile)
.into(holder.chatImageView);
} else {
holder.chatImageView.setVisibility(View.GONE);
}
END ANSWER
holder.userImageView.setImageResource(R.drawable.ic_action_picture);
//holder.chatImageView.setImageResource(R.drawable.ic_action_picture);
holder.chatText.setText(message.getString(ParseConstants.KEY_CHAT_TEXT));
//holder.usernameLabel.setText(message.getParseUser(ParseConstants.KEY_FROM_USER));
holder.whenLabel.setText(message.getString(ParseConstants.KEY_CREATED_AT));
return convertView;
}
private static class ViewHolder {
ImageView userImageView;
ParseImageView chatImageView;
TextView chatText;
TextView usernameLabel;
TextView whenLabel;
}
}
现在的问题是我不知道如何将picasso图像加载器实现到这里，在哪里放置Picasso加载器以及我如何获得ParseFile chatImageView ...
有人可以让我回到正轨; - ）