Android :: Manually / Programatically Scroll To A Specific Item In Gallery?
Apr 9, 2010
I am currently using a modified Gallery widget to display real-time events coverflow-style. What I now need is some Method to scroll to a specific item within the Gallery. Such method IS available within frameworks/base/core/java/android/ widget/Gallery.java as scrollToChild but is declared as private. Do you know of any manual way to move/scroll around a Gallery / List Widget?
Current workaround would be to inject DPAD_RIGHT using the Instrumentation Framework, which is as really ugly solution.
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Mar 13, 2009
I'm working on a little Player with Playlist and use the Gallery Widget to visualize the Playlist. I tried to scroll the Gallery Widget manual to an active item, but the Widget don't support any functions to do this. There are several methods in the Gallery.java class
movePrevious() moveNext() scrollToChild( int pos ) but the visibility of this methods is default or private. So i can't override this functions, if I Inherit from Gallery class.
can any one please help for a solution to scroll the Gallery manual?
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Feb 23, 2009
I have looked at the Gallery widget api,
http://code.google.com/android/reference/android/widget/Gallery.html
But can you please tell me how can I scroll an item in the Gallery programmically? e.g. i want to write code to scroll the gallery by 1 item at a time.
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Nov 20, 2010
I jave a list of item (linearlayout inside a scrollview where i add buttons vertically to linearlayout dynamically from the java code)i need when i click on one button the item moves up (scroll up) , to make the item at the first of the screen
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Jan 8, 2010
I have a little problem with a ScrollView.I have a layout for an activity which is made with a ScrollView. This scrollview contains two ListViews.<?xml version="1.0" encoding="utf-8"?>
<ListView android:id="@+id/accountsListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="none" />
<ListView android:id="@+id/cardsListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="none" />
</LinearLayout>In onCreate method of my activity I compute ListViews height according there contents.During execution, on activity launch, ScrollView is already scrolled a bit.So I tried, at the end of onCreate to call method scrollTo(0, 0), but it does not change anything.
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Aug 11, 2010
I have a horizontal scroll view containing multiple Bitmaps of variable length. My question is how can i make a particular bitmap selected which in not visible on the current screen and let the horizontal scroll to scroll such that the earlier invisible Bitmap is now visible.
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Nov 8, 2010
I am trying to find out how I can add an item (from xml drawable/workaround_item.xml) in a LinearLayout that is vertically aligned.
CODE:.........
At the beggining I was trying to use a ListView but as far I as know there is a bug using listview inside a scrollview. I was doing this because i have more components on the view that should be scrolled together with the list view. So I decided to remove the listview and implement a simple linear layout where i will be adding each element bellow other and so on.
The layout for the activity is as folow (layout/workaround.xml) and i would like to start adding the elements below the top bar.
CODE:........
Thats my java code:
CODE:......
Thats the result i am getting: http://twitpic.com/3562yu
Does android allow us to do this? If so, Hoe can I add the elements and set their values? (this layout will be dispalying results of soccer games).
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Sep 17, 2010
I want to programatically refresh Gallery every time I download a video from my application. It doesn't automatically show up in the gallery.
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Nov 29, 2009
I'm looking for a shopping list that will add an item when I scan a barcode, or enter it in manually, then assign a quantity.. That's really all I'm looking for. I tried Price Book from the market, but all the info it wanted in addition to the barcode was a little overwhelming (unless I missed something about it). Any suggestions?
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May 7, 2010
My application show a ListView with a button which allow user to add an element. When the user clicks on this button, another Activity is started to allow user to populate the new element. When the add is finished, we return to the previous Activity with the ListView and I would like to scroll to the new element.
Note that this element is not necessarily at the end of the ListView because there is an "order by" when I retrieve the datas from the database. I know I need the cursor position of the new element to make the ListView scrool to it, but the only info I have about this element is its id, so how to convert this id to cursor position ? Do I have to loop on the cursor to find the position?
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Aug 17, 2010
I have a ListView with an edit text and a button below it. When I click on a listView item the keyboard appears and push up the edit text and the button. I want the list to scroll to the selected item.
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Dec 22, 2009
I have a TextView inside a ScrollView. Let's say the ScrollView is named s and the TextView is named t.
I have many lines to be displayed in the TextView and at the same time I want to scroll the view to a specific line.
So I did this:
t.setText(aVeryLongString);
int y = t.getLayout().getLineTop(40); // e.g. I want to scroll to line 40
s.scrollTo(0, y);
But it won't scroll, except the second time. It seems that on the first time the code finishes, the ScrollView knows how much the total height of the TextView is.
So I think there must be something to force calculating the needed height before the scrollTo call. How to do that (or otherwise)?
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Jul 7, 2010
I am using a Gallery based Coverflow, as suggested here.Is there an event that can be caught, which indicates that a single shift (either left or right) has been made in my gallery/cover flow? To be clear, if I gave the gallery a decent swipe and my center (selected) image has changed 8 times, I would like to catch this event 8 times. OnFling() just indicates a single swipe - regardless how many items have shifted.Getting getSelectedItemPosition() before and after the swipe doesn't help since I need to do some work on every shift.It will also be nice while I am at it, to get the direction of the shift - either right or left.
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Mar 10, 2010
I have a background color applied to a ListView but everytime the list is scrolled the background color changes back to the system default (black). When the scrolling stops the color goes back to @color/window_background.The style is applied in AndroidManifest.xml:<activity android:name=".event.EventList" android:theme="@style/CKButtons"></activity> and my ListView looks like this: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
><ListView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/android:list"/>
<TextView
android:id="@+id/android:empty"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="@string/eventlist_no_items"/>
</LinearLayout>How can I prevent this from happening?
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Jul 17, 2009
I am using openContextMenu() when someone clicks on an item of a list (not when they long press as usual). The context menu does appear, however, it shows the context menu for the last item that the context menu had appeared. For example, if I long press the item C of the list then the context menu for item C appears, and later if I click on item B, with openContextMenu() the context menu for item C will again appear, not for B that I was expecting. How can I set the current item for which the context menu will appear to be the item of the list the user clicks on? I do have the position from onListItemClick() and I was trying to find a call like setContextMenuItem() or something, but I can't find anything.
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Sep 17, 2009
Can't figure out if it's possible to programatically scroll Gallery to the left so that first item in the gallery is all the way to the left and not in the center of a gallery. Must be simple but I just can't figure it out.
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Feb 18, 2010
Does anyone have any solution for placing multiple Galleries on a layout? The problem is only one Gallery will scroll with multiple Galleries on a layout. The other Galleries won't work. Anyone know a workaround?
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Jul 16, 2010
Can i change the scroll speed in gallery view? i want a constant change in the gallery views irrespective of the speed the user fligs it.
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Dec 27, 2009
Is it possible to scroll a Gallery widget pragmatically? I see Gallery inherits scrollTo() and scrollBy(), but that scrolls the entire widget itself, not its content.
Is there some obvious way to do this that I'm missing, my searches are coming up empty? I don't want to have to do a copy/paste/hack from git hub if possible.
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Aug 12, 2010
The default gallery widget only provides events for when items are clicked, but is there any way to tell what item is selected when only dragging the gallery around?
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Mar 22, 2010
Looking at the Gallery example in the link http://developer.android.com/guide/tutorials/views/hello-gallery.html I see that the first item in the gallery is placed at Center Is there a way to move the first gallery item to left?
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Oct 10, 2010
I want to set custom border for gallery item.
When i zoom a image which is selected in gallery,I want to change border only for selected item.
How to do that?
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Jun 27, 2009
Is there a gallery program that allows you to scroll through your photos like the Iphone does?...Its the one thing thats keeping me from being 100 percent happy with my phone.
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Sep 26, 2010
I'm trying to implement scroll animation for gallery...programmatically.
tried with setSelection(int pos, Boolean animate) and it's not working.
is there anyway to override setSelection() method.
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Jul 24, 2010
I have a gallery that displays TextViews where the background of each view is the following code...
This selector work just fine for the state_pressed and default (idle) states, but the selected item state is never displayed. I REALLY do not want to force the background of the selected item by changing the background of the view when the onItemSelected event is called. What is the correct state or correct way to get the TextView background to be set properly. Is the selected (center) view in the gallery not really selected? Is there some other state I should put in the selector drawable xml?
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Aug 1, 2009
I must to new a thread. I know how to implement this issue by Menuifest.xml, see also: http://groups.google.com/group/android-developers/browse_thread/threa...
But my question is how to add share menu of Gallery by java code not Menuifest.xml. My code is as below:
code:.........
But registerReceiver always return null, and there is no menu added to Gallery's Share.
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Aug 1, 2009
I know how to implement this issue by Menuifest.xml, see also:
Google Android Developer Group related issue
But my question is how to add share menu of Gallery by java code not Menuifest.xml.
My code is as below:
CODE:........
But registerReceiver always return null, and there is no menu added to Gallery's Share.
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Jan 10, 2010
I have a Gallery with a set of images that was downloaded at run time.I followed the example here:http://www.anddev.org/a_androidwidgetgallery_-_example-t332.html but instead of using i.setImageResource(this.myImageIds[position]);I used i.setImageBitmap(bitmaps.get(position));This doesn't fill the entire width of the screen, only as much as the width specified here:i.setLayoutParams(new Gallery.LayoutParams(150, 150)); When I increase this number, the item scales with it instead of showing more images per the example. I've even tried to scale the images before adding them to the set. Not sure what I'm missing, or where other examples of this might be. Any help would be great.
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Jun 11, 2012
Every image and video in the stock Android ICS Gallery app is displayed twice, how can I fix this?
This only happened a couple of days ago. I know the items themselves are not duplicated because I've checked with QuickPic, Root Explorer and Windows Explorer.
I have a Nexus S running a rooted build of stock 4.0.4. I've tried clearing cache and data of the gallery app to no avail.
SOLUTION: Go to Settings > Apps > All. Find Media Storage and then Clear Data. Reboot the phone (I had to do it twice) and it will clear your thumbnails, recreate them and put everything back to normal.
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Feb 15, 2010
I downloaded Open Home with the DarkHero skin. In doing so, it made my wallpaper resolution 960x854. So rather than each window having a separate wallpaper, it is now one big one, just like the Moto Droid. Which is awesome in my opinion. The problem is setting new wallpapers. Is there a way to manually save downloaded wallpapers to the stock Wallpaper Gallery, rather than the Photo gallery where all of my camera photos are stored? I only ask because it keeps asking me to crop these 960x854 photos and select which window I'd like to change, when I don't want to do any cropping.
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