Android : Scroll And Drag A TileView Widget Around By Finger / Touch
Mar 31, 2009
In the Android API examples there is a Snake game. This game uses a class called SnakeView, which inherits from TileView.
I am doing something very similar to this. I am inheriting from TileView to create a class (SkyView), which will become a square board for a board game (similar to the board for Checkers).
However, I would like for my game board to be 400x400 pixels in size, which will be bigger than the screens of some Android devices (such as the G1). And I would like for the user to be able to freely scroll and drag the board around with their finger (both horizontal and vertical scrolling/dragging).
Can someone please point me in the correct direction for implementing this? The board must be no smaller than 400x400px in size. And however much of the board that can be displayed at once on the screen, should be displayed at once.
Should I wrap my SkyView widget in an AbsoluteLayout and use Scrollbars? If so, what Scrollbar properties to I need to use? I played around with Scrollbars in both directions but couldn't get it to work. Is there another view layout I should put it inside? Code examples would be nice! Thanks for the help. I am at a loss with this one.
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Jul 16, 2010
I am programming an android application and my "testing" device is a Motorola Milestone (Droid). I have done a grid that scroll like the iPhone home menu ( with "points").
I got two problems:
The first one : the drag only works on the Android Device Emulator and don't on the Droid! (Maybe the multi-touch screen is a problem?) The drag is too responsible, and flip views sometimes one by one (this is ok) and sometimes 2 by 2 or 3 by 3! That is clearly problematic!
Here is the code of my OnTouch method: Code...
Update : It doesn't work anymore on the Google Nexus One!
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Nov 18, 2010
I've an ImageView in a LinearLayout, how can I detect when user drag his finger from any place in the screen to inside of ImageView?
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Nov 9, 2009
Is there a way to make highlighting of a row in a listview delayed if the user is simply scrolling the list with their finger? To clarify, when the user puts their finger down to scroll, the intersected row (if any) gets highlighted for a short moment, before it realizes the user is just trying to scroll (then the highlight turns off). It seems like the timeout is too short - iPhone has the same behavior, just seems that the timeout is longer to discern between a real row- select-touch, and just a scroll-touch. Any way to tweak this? You can see the behavior in any of the system apps that have lists..
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Nov 11, 2009
I was checking the possibility to allow painting on the screen of a surface (i.e. API demo Fingerpainting example), however when I checked it, this technic apparently only allows painting with the tip of your finger, if you try to use any other object (pencil, thick pen, etc.) it does not draw anything on the surface. Am I missing something here? Is there a way to allow other objects to draw things on a surface? Is this achievable and how should I proceed?
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Dec 22, 2009
Sometimes when scrolling down on a page (using my finger to scroll) the page will scroll all the way to the bottom of the page with a single flick of the finger. Am I unintentionally doing a specific gesture with my finger that causes this to happen? Or is this just a bug at this point?
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Aug 20, 2010
is there any application to get screen off by fast finger touch?
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Sep 23, 2010
I need to implement the Image zoom in and zoom out functionality using the finger touch,like we have it in Android phone Image gallery, Please let me know how can i do this in my app.Does any had done this before.
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Dec 24, 2009
Can i create the same kind of navigation that I have on the main screens? That is, I want different screens that I can navigate between using the touch-and-drag?
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Oct 12, 2010
I need your help in differentiate between touch event and drag. since I need to do action when user touch the screen and another action when it touch and drag. I wrote the code below but it only works for touch but not for drag. ret is the return value of the onTouch method. Code...
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Nov 24, 2010
I am working on some example in which i want to drag the image corresponding to touch in Android. Does anybody have an idea about how I can do it?
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Jan 11, 2013
Code for drawing line that moves horizontally and vertically only on finger touch.
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Jan 10, 2010
Kind of sad, but I guess it's something we all knew deep down anyways.
Smartphone touch-screen analysis tests finger fidelity | CES 2010 - CNET
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Aug 6, 2010
I would like to get access to the area covered by a finger for each touch event on an Android.Every touch event will result in a coordinate pair X and Y independent of how big the finger and consequently the touch area is that triggered the event. I was wondering if there is a way to get the area data which triggered the touch event e.g. size or coordinates NOT
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Jun 5, 2009
Is it possible for an app icon to drag over and interact with a widget, similar to the action of deleting an icon or adding something to a folder?
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Feb 18, 2009
i'm rearranging items in the list by dragging the item. I'm in the touch mode and want to scroll view couple of items then i'm on the last/first visiblePosition. Since i'm in the touch mode setSelection is useless. How i can scroll a list in the touch mode. For drag i'm using onTouchEvent , onLayout to change background for the current item + some stuff in adapter to make a swap.
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Oct 18, 2010
I'd like to get your suggestion for best option to implement the following interface on android 2.2.
1. Folders (or folder windows displayed as pictures) are assembled or places as a deck of cards on screen 2. when using a touch (scroll up motion) each folder windows move up (scroll up) at a tilted angle and gradually it gets straighten in vertical direction when reaches at the center . The other folder windows are linked as a chain so if you scroll up again the next folder window will take the center position and so on until the last one. This can be scroll up or down.
Apparently, it seem it can be done with GridView or Gallery Widget to start instead working for new widget. if you have experience doing such interface , suggest me for better option?
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Jul 8, 2010
I have to acheive that the Touch Scroll on the View Flipper. For Example. I have to Images. At First, ViewFlipper Shows an First Image. Now I Flung the view from right to left. The First Image view SLide out Left and Th Second Slide in from Left. I can Achieve it By this Post. But I want to Scroll the image. that is, On the Action_Move Event i want to do Touch Scroll. For Example, When i move the touch from right to left. it will flung how much the touch moves. on that time the output should looks the both images partly. How to do that? What i have to measure the Screen levels(height & width). Example codes are more helpful. Sorry for the Bad English.
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Feb 18, 2010
I am trying to pass the same touch events on one widget to the other so they both scroll at the same time and in same way. I have two Gallery widgets one above and one below. If the above one is scrolled then I want to pass the same touch event to the bottom widget so it also scrolls the same way.I have tried to use dispatchtouchevent events but I am facing an issue where in if the bottom gallery widget has some edit text then the edit text gets the key event and both widgets doesnt scroll anymore.I have tried to set focussable and editable to false on edittext even then it gets the touch events.I think I am going in the right direction. However I need some assistance in doing the right way.
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Apr 5, 2012
I am able to create and drag and drop activity successfully but the only problem I faced is if I drag the view more than about 30 times, the drag event will stop to initiate and I am unable to drag anything. What is the causes?I am using onTouch() to drag the view.
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Jul 18, 2010
Since the update in May, I haven't been able to "touch scroll" through my files/pictures....before the update I could (using Astro) click on a picture and then touch and "throw" to the next one...but since the update when I click on a picture, I have to go back to the file list and click on the next one....is there a way around this? a setting to change?
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Dec 30, 2009
In one of my androids activities, I have several widget in a vertical linearlayout. The length of this layout is bigger than the screen and thus I cannot see the widget at the bottom.
In the Emulator, is there a special scroller to implement or a particular action to do to be able to scroll up and down?
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Sep 16, 2010
Looking for a widget to show and scroll through the bookmarks. Full screen preferred
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Jan 22, 2010
Is there any way to set this to scroll all scores? For example, if I set my favorite NBA team to Miami Heat and they're off, it jumps straight into the next sport of my other favorite teams. I'd prefer to set it to scroll all NBA, NFL, and College Football / Basketball games.
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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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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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May 8, 2010
I am looking for a weather app that has a scrollable widget. Letting u scroll through different citites.
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Jul 3, 2010
i have a lot of quotes that i would like to have displayed as a widget where maybe it'll change daily to a different quote.
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Apr 21, 2010
I have created a widget to be displayed on android emulator's home screen to display some long text. In my main.xml layout file i've already set TextView properties like singleLine="true", ellipsize="marquee", focusable="true" etc, but still when my widget is displayed on home screen text does not move/scroll.code...
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Oct 17, 2009
I have a common problem with my heros sense UI or at least a HTC widget, the message widget. Not only is it the most laggy widget ever, but sometimes it bugs for me so that I can only go two messages down, not able to scroll further downwards to other conversations - only upwards. Anyone else tried this or know why it happens?
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