android-listview

问题 I want to implement Pull down to Refresh and pull up to refresh with Expandable List View. I am using Expandable List View. Below is java code that contain Expandable List View. public class LoadMoreListView extends ExpandableListView implements OnScrollListener { private static final String TAG = "LoadMoreListView"; /** * Listener that will receive notifications every time the list scrolls. */ private OnScrollListener mOnScrollListener; private LayoutInflater mInflater; // footer view

问题 I've just implemented GSON to Fedor's LazyLoading ListView. That means the app saves the downloaded images and texts from the web to the external storage though an ImageLoader class. and I wonder why how to make this listview accessible without an internet connection. Here I give you a snippet of my ListView Class: public class ProjectsList extends Activity { ListView lstTest; ProjectAdapter arrayAdapter; ArrayList<Project> prjcts=null; @Override public void onCreate(Bundle savedInstanceState

问题 I want to implement a to-do list application. I have three activities: one main activity, one adding activity and one editing activity. In my main activity there is a add button and a listview that shows the to-do items. When I click add button, adding activity is executed. In this activity,there is an edittext for the task, a datepicker and a spinner for priority level. When ok button is clicked, all these entred values are sent to main activity's listview as a line. And, when click an item

问题 When creating a custom ListView adapter, usually I extend it from Array Adapter<String> but I want to make a ListView containing photos from the Gallery of the phone. I managed to get the Bitmap from the Gallery referring to the picture the user chose and put it in a regular ImageView but, I don't really know how to do an adapter of a ListView displaying the photos the user choose. The photos are Bitmap , any help? 回答1: You would do this exactly as you would do with a list that contains only

问题 I make listview from xml file http://view-source:http://www.macetlagi.com/maps/st/canvaser/3/tb/tb123.I will get element from "segment" tag.When i run and debug my code,i get this error java.lang.NullPointerException .Please correct my code if i do my stupid coding.This is my java code in android : public class ListSegment extends ListActivity { String URL_XML = "http://www.macetlagi.com/maps/st/canvaser/3/tb/tb123"; static final String KEY_SEGMENT = "segment"; static final String KEY_SEGMENT

问题 im trying to save the values of Edittext in the ListView and it works, but when there is a ListView too large, when Im editing 1 edittext, if I scroll the listview, another EditText is editing at the same time... I don't know what to do, I wasted 6hours, and got nothing. If some can help me, please. This is the code of the getView of the Custom Listview @Override public View getView(int position, View convertView, ViewGroup parent) { final int position2 = position; View v = convertView; final

问题 i want to populate listview with json parser. but i have following error: 12-12 22:49:39.812: ERROR/JSON Parser(1254): Error parsing data org.json.JSONException: Value <!DOCTYPE of type java.lang.String cannot be converted to JSONObject JSONParse: public class JSONParser { static InputStream is = null; static JSONObject jObj = null; static String json = ""; // constructor public JSONParser() { } public JSONObject getJSONFromUrl(String url) { // Making HTTP request try { // defaultHttpClient

问题 I have three fragments, the second and the third one, have a listView in their respective layout. initially, the listView of both "second and third Frament", is populated with the same items. i other words, initially the the listView of the second fragment and the third one, contain the following where CB: is checkBox and IV: is ImageView and t is: textview, and SaveButton is a buton t1........CB.......IV t2........CB.......IV t3........CB.......IV t4........CB.......IV t5........CB.......IV

问题 I want to know a good way to create a list in my android app. I have all info in my DB and want to load data from it each time I start the app and make a list from it (id and title). What is the best approach? Should I make a PHP-script that responds with a JSON encoded array with all list items or should I make an XML-file that generates each time the data in the DB changes that I import to the app each time it starts? or any other good way to do it? Since all stuff are made by XML-files in

问题 I have a listview connected to an adapter showing messages but, I am trying to implement next and previous buttons in a different activity. The problem is how do u show the next or previous item on the listview when a button is clicked from another activity (detailed view activity). I have entered image description here : Attached are screen shots of the project with the next and previous buttons 回答1: You need to get the data from the array or arraylist whatever you are using for adapter.