Question

我希望能够从用户列表中获取一个parseobject字符串并在另一个活动上显示下摆，但是当我通过intent将它们发送到另一个活动时，不会显示该字符串，但会显示图像uri并且图像显示在活动上，但不显示在字符串上。

ActivityOne

    getActivity().setProgressBarIndeterminateVisibility(true);

    ParseQuery<ParseObject> query = new ParseQuery<ParseObject>(ParseConstants.CLASS_MESSAGES);
    query.whereEqualTo(ParseConstants.KEY_RECIPIENT_IDS, ParseUser.getCurrentUser().getObjectId());
    query.addDescendingOrder(ParseConstants.KEY_CREATED_AT);
    query.findInBackground(new FindCallback<ParseObject>() {
        @Override
        public void done(List<ParseObject> messages, ParseException e) {
            getActivity().setProgressBarIndeterminateVisibility(false);

            if (e == null) {
                // We found messages!
                mMessages = messages;

                String[] usernames = new String[mMessages.size()];
                int i = 0;
                for(ParseObject message : mMessages) {
                    usernames[i] = message.getString(ParseConstants.KEY_SENDER_NAME);
                    i++;
                }
                if (getListView().getAdapter() == null) {
                    MessageAdapter adapter = new MessageAdapter(
                            getListView().getContext(),
                            mMessages);
                    setListAdapter(adapter);
                }
                else {
                    // refill the adapter!
                    ((MessageAdapter)getListView().getAdapter()).refill(mMessages);
                }
            }
        }
    });
}

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);

    ParseObject message = mMessages.get(position);
    ParseFile file = message.getParseFile(ParseConstants.KEY_FILE);
    String messagetxt= message.getString(ParseConstants.KEY_MESSGAE);
    String information = message.getString(ParseConstants.KEY_INFORMATION);

    Uri fileUri = Uri.parse(file.getUrl());

    // view the image
    Intent intent = new Intent(getActivity(), ActivityTwo.class);
    intent.setData(fileUri);
    intent.putExtra(messagetxt, "message");
    intent.putExtra(information, "information");
    startActivity(intent);

}

AcivityTwo

    Uri imageUri = getIntent().getData();
    Picasso.with(this).load(imageUri.toString()).into(image);
    String messagestring = getIntent().getStringExtra("message");
    String infostring = getIntent().getStringExtra("information");

    message.setText(messagestring);
    info.setText(infostring);

Answer 1

你误以为：

intent.putExtra(messagetxt, "message");
intent.putExtra(information, "information");

我认为应该是：

intent.putExtra("message",messagetxt);
intent.putExtra("information", information);

第一个参数是键，第二个参数是键的值。

android错误通过意图显示parseobject

1 个答案: