android-listview

问题 I have a ListFragment and I want to set its empty view, so I use the following code: View emptyView = getLayoutInflater().inflate(R.layout.collection_empty_view, null); detailFragment.getListView().setEmptyView(emptyView); for the following xml layout: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/empty" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical" > <TextView

问题 is there any standard way in Android for creating a list view covering content by width, but with the height big enough for displaying a fixed number of rows? For example, I would want my scrollable listview to pop up in the middle of a screen/activity displaying exactly 6 items out of 20 at a time. 回答1: Try this. adapter.setViewBinder(new SimpleAdapter.ViewBinder() { public boolean setViewValue(View view, Object data, String textRepresentation) { LinearLayout.LayoutParams params =

问题 I have a feeling this is due to some sort of rendering optimization or something, but I'm not sure what. I have a list view and when an item is selected, I change its background color so that it visually remains selected. The problem occurs when the list extends beyond the screen (it scrolls), if I select an item near the top and then scroll down it also displays another selected item that was once out of the view (i can never see 2 selected items on the screen at the same time). This also

问题 I'm trying to create a to do list in android, where each item is a checkbox. I want to be able to programmatically update the list of items as the user (me) adds a new task. Any tips for how I could accomplish this? 回答1: As suggested notepad tutorial would be good here is a few design tips: You probably need to create layout with listview Then create another layout for your list rows to inflate which is in your case checkbox Create adapter for listview to set items by extending ArrayAdapter.

问题 I have a listview that have 5 item in it if am trying to set error on the 4 th and 5th item .Then it is throwing a null pointer exception. Exception 08-22 13:34:49.523: E/AndroidRuntime(16952): FATAL EXCEPTION: main 08-22 13:34:49.523: E/AndroidRuntime(16952): java.lang.NullPointerException 08-22 13:34:49.523: E/AndroidRuntime(16952): at com.example.iweenflightbookingpage.MainActivity$1.onClick(MainActivity.java:116) 08-22 13:34:49.523: E/AndroidRuntime(16952): at android.view.View

问题 Hi I am trying to figure out how to make an expandable header that stretches when the user pulls the listview down. An example of this is path, when the user views their profile page, they are able to pull down the listview and the header or image at the top of the page stretched to expand. I have done research into this and cant find an example of how to do this. Could some one help please. Thanks EDIT Basically what I am trying to do is get the following result: So as you can see from the

问题 Please help me to rsolve the error : D/AndroidRuntime(836): Shutting down VM W/dalvikvm(836): threadid=1: thread exiting with uncaught exception (group=0x4001d800) E/AndroidRuntime(836): FATAL EXCEPTION: main E/AndroidRuntime(836): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.FirstProject/com.example.FirstProject.List}: java.lang.IllegalStateException: getWritableDatabase called recursively E/AndroidRuntime(836): at android.app.ActivityThread

问题 I am using json parsing in my app,i am getting following response,and i want to display name from my response to listiview,but my app got crash,can any one tell me what is the mistake [ { "friend_id": "1", "user_spoc_dob": "1993-11-11", "status": "true", "spouse_name": "lily", "occ": "spoc" }, { "friend_id": "1", "user_mother_dob": "1974-12-12", "status": "true", "mother_name": "sita", "message": "Address details Not available", "occ": "mom" }, { "friend_id": "1", "user_father_dob": "1972-11

问题 I am creating an application, where I am getting call history in a listview , now what I am trying is after any incoming or outgoing call disconnection,I want to open that listview , but I don't know my app is not opening. my listview page is not displayed after any call, following is my code public class MainActivity extends Activity { private ListView listview=null; private String callType=null; private String phoneNumber=null; private String callDate=null; private String callDuration=null;

问题 I am trying write a news list application. I had parsed JSON data from Server and created CustomListAdapter. There are three textView and imageView in my listView. It works great, image loaded and I set it to imageView. When scroll list view images are reloaded from server. This is my Fragment: @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.news_fragment, container, false); this