android-listview

问题 after some advice really. My app fills a list view on load using a mediastore cursor. This is pulling music linked to user defined folder, which in most cases will be all of their stored music. I have one beta tester that is using an Archos Tablet with approximately 10000 songs on it, running android 2.2. While performance for most users is pretty slick, I wanted to improve the experience for users such as this. The current process: User loads app. App finds default folder App populates list

问题 I want to make a listview with semi-transparent cells (some sort of blue with 25% opacity). The listview is created correctly but, when i perform an scroll motion(I press and drag down or up) the list seems to activate some sort of selection mechanism witch applies a black and opaque background to the list. Any Idea how I can get rid of this? Below is the code and the two screens: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent"

问题 The problem Suppose you have a view inside a layout view, and you wish that each touching event on the layout would affect the view's background selector. for example, when you touch the layout , the selector of the view will choose the state_pressed state. What I've tried I've read about duplicateParentState and addStatesFromChildren , but I think it's the opposite of what I'm searching for. I've also tried to use splitMotionEvents, but it didn't help. The question How do you do this? Also,

问题 I am trying to create a list view that smoothly scrolls with the following code: <ListView android:id="@+id/list2" android:layout_width="match_parent" android:layout_height="match_parent" android:listSelector="@android:color/transparent" /> // tt is and array of x (Object)that have 100 objects. x[] tt= response.getX(); ItemsAdapter myListAdapter = new ItemsAdapter(getActivity(),R.layout.mylist, tt); // setListAdapter(myListAdapter); list2.setAdapter(myListAdapter); // the adapter listview

问题 I have a custom ListView where I display some weapons which are retrieved from a local database. I have a total of 88 rows, for each row a text and an image is set each time getView() is called. The ListView lags while scrolling fast and the garbage collector is going insane, deleting some 1M objects per second. I'm not getting why. Before I post my Adapter implementation, some explanation about how the Image is set. My Weapon class is simply a data holder with setters and getters. This is

问题 I am fairly new to android and I have some problems with a filtered listView and The activity it's in changing from landscape mode to portrait mode or or vice versa. I have an editText that I use for filtering "drinkSearch", this filtering works as long as I do not change the viewing angle (portrait vs landscape). This is the error that I get: java.lang.IllegalStateException: attempt to re-open an already-closed object: SQLiteQuery: SELECT _id, name FROM drinks As you can see in the following

问题 I have a ListView which is : <ListView android:id="@+id/list" android:layout_width="290dp" android:layout_height="166dp" android:layout_marginLeft="5dp" android:layout_marginTop="10dp" android:visibility="gone" android:choiceMode="singleChoice" /> And there is ImageView <ImageView android:id="@+id/cont" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginLeft="20dp" android:layout_marginTop="30dp" android:src="@drawable/img" /> How I am adding data in

问题 I have edittext and below that one listview now if need to search means based on text on edittext i need to update the list view.the listview values stored in arraylist 回答1: This is the search function in my applicaton,hope u get him idea from it.. et_artists_searchWord.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { // TODO Auto-generated method stub List<AdapterDTOArtist> list = filter(s.toString(),

问题 I have implemented horizontal list view inside vertical list view using librarty: https://github.com/dinocore1/DevsmartLib-Android. It is working fine. I have to implement touch listener on list view to manage visibilty of header view (similar to google chrome's android app'd URL bar). Touch listener works normally for list view (if horizontal list view is not inflated in it). But when user touches the list cell having horizontal list view, then touch event is not handled. I have also noticed

问题 I am fetching Contact Data using cursor and trying to load it in a ListView I have developed my code based on QuickContact sample of APIDemos (API Level 8) and here is my code which i have modified a bit , but i am facing the performance issue if i remove the contact photo code then performance will be fine otherwise its too slow like dragging a list Adapter Code private class ContactListAdapter extends ResourceCursorAdapter{ Cursor cur; public ContactListAdapter(Context context, int layout,