android-listview

问题 On a ListView single/short click, I can do this: protected void onListItemClick(ListView listView, View v, int position, long id) { tvInt = reviews.get(position); } How would I do this for a ContextMenu ? My ListView simply contains a single TextView . Edit: I want to grab the value of the TextView in the ListView , not the ContextMenu . 回答1: The MenuItem packs extra information from where you could extract the position of the clicked row in the ListView and then simply use the code you used

问题 I have a ListView that contains several TextView items. This list is created at runtime, and can vary in size. I would like to set the background of a TextView item based on a float value generated at runtime. I am using an ArrayAdapter. setListAdapter(new ArrayAdapter<String>(this, R.layout.list_fruit,ratios)); final ListView listView = getListView(); listView.setTextFilterEnabled(true); listView.setBackgroundColor(Color.LTGRAY); ((TextView) listView.getChildAt(0)).setBackgroundColor(Color

问题 I have a ListView that users will put comment in. When they hit "submit" attached to an EditText box, the new comment goes into a MySQL database along with the current time. I'd like the comments to appear in the listview with dates similar to Youtube formatting. For example: "10 seconds ago", "1 day ago", "52 days ago". Would I use the Calendar object, SimpleDateFormat, something else? Also, how would I store the date in the datebase? I am assuming something easily convertible like the UNIX

问题 I am getting a Null Pointer Exception at LayoutInflator in my ExpandListAdapter class that extends BaseExpandableListAdaptor. import java.util.ArrayList; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseExpandableListAdapter; import android.widget.TextView; public class ExpandListAdapter extends BaseExpandableListAdapter{ private Context context; private ArrayList<ExpandListGroup> groups;

问题 I'm using a FilterQueryProvider to filter the content of a list view which is backed up by a custom CursorAdapter. To use the FilterQueryProvider you have to override the runQuery() method which returns a Cursor object. Now I'm wondering how to query for the cursor asynchronously to avoid blocking the UI thread. Is there some kind of best practice? I couldn't find any information whether the the runQuery() method is executed on the UI-thread or on its own thread. 回答1: From the documentation :

问题 1.This is my listview <ListView android:id="@+id/lv_FromTable" android:layout_width="match_parent" android:layout_height="match_parent" android:choiceMode="singleChoice" android:listSelector="@drawable/list_selector" android:orientation="vertical" /> 2.in onCreate of main activity i load item and set adapter to listview lv_FromTable = (ListView)rootView.findViewById(R.id.lv_FromTable); FromTableAdapter = new ManageTableAdapter(context, FromTableList); lv_FromTable.setAdapter(FromTableAdapter)

问题 i'm making an app that shows running apps icon on listview. there are no syntax problem (i think) but when i launch app and try to run activity, the app force closes and i got threadid=1: thread exiting with uncaught exception (group=0x41088930) and more error how can i fix this error? should i use Asynctask to load image to list view? or any solutions? (Logcat) 02-18 14:17:46.700: W/dalvikvm(18370): threadid=1: thread exiting with uncaught exception (group=0x41088930) 02-18 14:17:46.700: E

问题 I have created two Activities ( MainActivity , ListActivity ) and in MainActivity , I have an EditText and a save-button. In ListActivity , I have a ListView . I want to save the value/data/string text that is written in EditText and send it to the other Activity in the ListView . This is how it looks now, but I think I know what I'm missing but don't know how to do it. MainActivity. public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) {

问题 In my application I am using listview and I am also doing json parsing. Now the issue is I want to set colors in my views, the color code I am getting from server. Following is my json response and java code can any one help me, to set color codes in my views? [ { "id_product": "1445", "name": "Stylish Sleeveless Leather Vest", "price": 1990, "discount": 199, "colors": [ "#000000", "#7E3517", "#C85A17" ], "sizes": [ "Medium", "Large", "Small" ], "img_url": "", "popup_images": [ ] }, { "id

问题 i am trying to make a layout like this: actionbar ==================== txtViewTitle -------------------- listview item1 listview item2 listview item3 ........scroll scroll scroll ...at the end of all the items: ----------------- txtViewFooter ================== linearlayout of buttons [always visible at the bottom] ------------------------------- the part between the ==========s should be scrollable here's my code, it works except for txtViewFooter which is displayed if the list is short