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我將數據添加到列表視圖中,一旦我收到消息。當偵聽器調用,然後我添加消息,但它不顯示在列表視圖上。添加數據但未在列表視圖中顯示
請幫我解決這個問題。
/**
* It display the chat messages.
*/
private void displayResultList() {
if(messageList != null && messageList.size() > 0) {
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, messageList) {
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(context).inflate(android.R.layout.simple_list_item_1, null);
}
((TextView)convertView).setText(getItem(position));
((TextView)convertView).setTextColor(Color.BLACK);
return convertView;
};
};
setListAdapter(adapter);
getListView().setTextFilterEnabled(true);
}
}
/**
* This listener called when click on send button.
*/
private OnClickListener sendListener = new OnClickListener() {
@Override
public void onClick(View v) {
try {
muc.sendMessage(chatMessage.getText().toString());
messageDataSource.open();
messageDataSource.createRoomMessage(roomName, chatMessage.getText().toString(), userId, null);
messageDataSource.close();
chatMessage.setText("");
} catch(Exception e) {
Log.v("HB", "Exception at::" + e.getMessage());
}
}
};
datasource.notifyDataSourceChanged() –
沒有對象'datasource'。請給予更多解釋。我添加了adapter.notifyDataSourceChanged(),但仍然沒有添加到列表視圖 –
hm。你明白這個作品嗎?因爲它看起來你跳過了RTFM步驟...... –