android-listview | 易学教程

Stop ListView scroll animation

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问题 I have a ListView with about 100 entries. When the user does the "fling" from bottom to top it starts scrolling and keeps on scrolling even when the finger does not touch the display any more. Is there a way to stop the scrolling animation at this point? 回答1: Well there surely is a way to do it. But the point is more whether or not it is advisable to do it, in my opinion. The list is a standard Android control that behaves constistently across all applications. So I would be surprised if I

I can't click the ListView in android?

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I made an app using contact sync. I list the following contact info with photo, name and number. I successfully list all those things in a custom ListView , but I can't click the ListView . It looks like locked, Unable to click it. But I made a same procedure to another activity. Using custom ListView but I can click this view and it works fine. What is the problem? here is my sample coding: ListView settingsList = (ListView) findViewById(R.id.manage_track_listView); ArrayList<ContactList> MySettingsList = new ArrayList<ContactList>(); ContactList setting1 = new ContactList("contact name 1",

Android: Make view on top of listview scroll together with the listview

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问题 I have a listview which is obviously scrollable. The listview contains some form questions. Once the user submitts the form we put a stamp-like looking custom view on top of the listview (and prevent user from answering questions, but it doesn't matter here). The stamp should appear at the top of the listview (as in top of the screen) and be scrollable at the same speed as the listview, i.e. it should disappear when the listview items which were initially underneath it disappear at the top of

Deleting items from a ListView using a custom BaseAdapter

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问题 I am using a customised BaseAdapter to display items on a ListView. The items are just strings held in an ArrayList. The list items have a delete button on them (big red X), and I'd like to remove the item from the ArrayList, and notify the ListView to update itself. However, every implementation I've tried gets mysterious position numbers given to it, so for example clicking item 2's delete button will delete item 5's. It seems to be almost entirely random. One thing to note is that elements

Different Icons in List View

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问题 I have to create a list view , with each item getting a separate icon along the right hand side. I have written a code , but its not working ? how do I proceed ? application crashes CODE public class LoginMenu extends ListActivity { TextView maintext, subtext; QuickContactBadge icon; private static final String[] menuitems = { "Availability", "Messages", "Greetings", "Address Book", "Calls", "Settings" }; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated

UIL, Picasso - Images in adapter always reload when stop scrolling

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I have ListView with text and large image from internet. My image item has fit width and wrap_content height. I tried to display image in background with UIL & Picasso . Both of them can work but the image always reloads when I stop scrolling, and it makes ListView flickering It looks like this: You can see that it reload downloaded and cached images when I stop scrolling (I scroll down and then scroll up) . How can I prevent this happen? <ImageView android:id="@+id/imgFeed" android:layout_width="match_parent" android:layout_height="wrap_content" android:scaleType="centerCrop"/> // UIL options

How to maintain ListView position when using the new Loader APIs?

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In Honeycomb the Loader APIs were introduced as the proper way to provide data to an application by doing the heavy lifting on a background thread. In my application I'm working to replace all my Cursor s with Loader s that return Cursor s. Since Cursor.requery() is depreciated now, it is recommended to just call restartLoader and allow the work to again be done on a background thread and then changeCursor when it returns in onLoadFinished . All of this works wonderfully except that the ListView doesn't maintain it's scroll position when I want to requery the data, using Cursor.requery() this

Detect whether TextView in ListView is ellipsized

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I have a custom Adapter that renders some items in a ListView. I need to show an icon on the ListView's items, if the item's text is ellipsized, and hide it if there's enough room for the text to finish. I have access to the button in getView method of my adapter (where I set the text) but the ellipses are not added immediately upon setting the text. Is there any way I can do this? Here's my TextView markup: <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:ellipsize="end" android:singleLine="true" android:id="@+id/list_item_description"/> public int

Contextual action bar does not overlay my toolbar

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I have created an activity and set toolbar as the actionbar which i have positioned at the bottom. Inside that activity, I have a listview that contain some data. Problem is, when I long press a list item, contextual action bar appears at the top instead of overlaying my toolbar which is positioned at the bottom. my activity theme <?xml version="1.0" encoding="utf-8"?> <resources>  <style name="myActivityTheme" parent="Theme.AppCompat.Light.NoActionBar"> <item name="windowActionBar">false</item> <item name="android:windowActionModeOverlay">true</item> </style>

How to disable the particular list item in list-view in android?

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问题 How to disable the particular list item in list-view in android? I mean if once i selected any one of item from a list-view,that item suppose to be disabled which means that item should not be select-able again. How to do this? Suggestions please Thanks for your precious time!.. 回答1: try using this code in setOnItemClicklistener() if(listview.getChildAt(selectedPosition).isEnabled()) { listview.getChildAt(selectedPosition).setEnabled(false); } 回答2: When you pass a list of data elements to