Android :: Animating The ExpandableListView?
Sep 17, 2010Is it possible to animate the expanding and collapsing of the groups in a ExpandableListView.
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Android :: Animating A Layout?
Apr 8, 2009How do I animate a Layout?
I have a RelativeLayout which sits in a certain position within my Activity; I want to glide it in and out from the bottom of the screen when a certain button is pressed.
I have found examples of animating the children of lists etc but this is not what I want. I simply want to animate the whole layout and the views within it together.
Android :: Animating App Widgets?
Jun 22, 2010I have tried a weather widget and its working fine. The Weather widget is an app widget and I update the widget once in 6 hrs similar to the application on android site using AlarmManager. Now I want to animate the widget (ImageView) every 100 ms similar to HTC homescreen.
I dont think AppWidgets will scale well for this case. How can I implement this widget?
I have seen "Custom Homescreens" in previous Android SDK's. Should I have modify the Homescreen widget for doing this or is there any other way.
Android :: ProgressBar Not Animating
Aug 26, 2010I'm drawing a ProgressBar in a custom View (SurfaceView) to it's Canvas, and it's drawn as expected. Except that it's not animating, no matter what I do. My custom view is animated properly, but I cant change the progress of the ProgressBar.
I've created the ProgressBar like this:
CODE:..................
And I draw it something like this (slightly simplified):
CODE:........
And I've tried updating it's progress manually as well:
CODE:.................
Any ideas on what I need to do in order for my ProgressBar to animate or change it's progress.
Android :: Drawing And Animating?
Nov 5, 2010This is more of a question about animating than a specific problem coding. i need to fill in the broad strokes left by the research i've been doing.
What i'm trying to do:
The activity should load with only the a togglebutton visible. when the button is touched, a png will be animated to a certain position relative to the togglebutton. also, another button will slide in from off screen and slide off if/when the togglebutton is pressed again.
What i can't figure out:
I can draw an image, but only via xml. creating an imageview and setting the background programmatically does nothing.
When i draw from xml, i can't move the image when the togglebutton is pressed like i want to. when i call getPositionOnScreen() i get a null pointer, even though the complier can see i'm referring to the imageview described in both xml and in code.
I'm calling getPositionOnScreen because via xml, i have the image positioned behind the togglebutton so that it's not visible until the button has been pressed and the image starts moving. the idea is that with different screen sizes i won't know exactly where the view is until runtime. getPostionOnScreen allows me to get the coordinates of the imageview so i know where it has been positioned. when i have a start position, can tell it to "move up" on the screen from behind the togglebutton by simply adding to x or y until it's where i want.
This is the code to draw the image (inserted in the onCreate method).
CODE:.......
This is the code i'm using to animate. when the button is clicked, it calls this method on the view from the listener.
CODE:...............
I'm well aware that this is horribly wrong and won't work. what i need to understand is why.
Android :: Animating A Background Image?
Oct 6, 2010I have a RelativeLayout with a tiled background. Is there a way to make a tween animation to fade out the existing image and fade in a new one?
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May 19, 2009I am using a SurfaceView, and wish to animate Drawables. All the animation tutorials I have seen concern using an ImageView, which as I understand is not a sensible approach from within a SurfaceView. Does anyone have any suggestions for doing frame-by-frame animation within a SurfaceView? Can it be done with openGL?
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Apr 27, 2010Is there a way of being notified when a TransitionDrawable has finished its transition? I'm looking for a way to animate the background of a LinearLayout, switching it back and forth between two images thus creating a pulsating effect. TransitionDrawable works nicely, but....once. I tried stacking several 'item' in the XML defining the transition, but no luck. It justs fades from item 1 to item 2 and sits there. I'm wondering if I shouldn't implement a custom Animation.
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Nov 10, 2010Does anyone knows if it's possible to animate different views during the same animation: I have a linear layout containing 6 dices (each dice extends a textview) and I need to animate each dice to simulate a roll (each dice will rotate on itself). I know how to do this rotation on each dice by using 6 animations, but I want to group these animations in one, so that I would be able to add an animation listener to execute further instructions at the end of this animation. I tried with an animationset but didn't manage to do it.
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Feb 3, 2010I'm trying to do something which seems simple. I want to have a map view, with a menu that slides up from the bottom of the screen where settings (for overlay) can be adjusted. However when I use a TranslateAnimation to affect the y position of the LinearLayout (which holds the menu), the buttons in the LinearLayout move, but there "hit area" stays in the same position as they were before the animation.
CODE:.........
I've also looked into tweening the view's marginTop value, but haven't even been able to determine how that would be done.
Android :: ProgressDialog Created From OnCreateDialog Stops Animating On Second Run
Sep 29, 2010I create a ProgressDialog in onCreateDialog() like so:
code:.........
Android, in its wisdom (or serious lack of it) decides to cache every dialog created through onCreateDialog(). Because of that, any subsequent call to showDialog(DIALOG_PROGRESS_ID) results in the same ProgressDialog instance being used but the animation has stopped working.
I've tried to re-set indeterminate in onPrepareDialog(), but that doesn't do anything. There is likewise no obvious method to call on the dialog instance that will reset the animation.
code:................
But maybe there is a way to get the ProgressBar itself and start it animating? so I tried the following after I asked this question:
code:........
But it didn't work either!
So, does anyone know if there is a way to restart animation on a ProgressDialog? If not, is there a way that I can force every showDialog() call to call onCreateDialog()? (this second question was answered by @TuomasR, but after pondering it I don't think this is a very good solution to my problem)
Android :: Animating A Drawable On A Canvas Inside A Surfaceview
Sep 2, 2010Is there a way to animate drawables on a canvas using the android built-in animation classes?
Ive been modeling my test application, a game, after the example apps lunarlander and jetboy. They contain a lot of reusable code, but they manually update the drawable objects in real time. It seems like using the android animation built ins would be so much easier since they provide the type of animation I need¦a simple linear movement.
Is there a way to do this, or am I better off updating my canvas in real time much like the example apps.
If there is a way, could anyone get me started with some sample code? I am currently inheriting SurfaceView in my class.
Android :: Scaling - Animating Camera Preview Surface
Sep 20, 2010I am using android.hardware.Camera to get a preview and display it on a custom SurfaceView that implements SurfaceHolder.Callback.
I am trying to zoom in to the camera preview surface by a specified scale (not using the camera's digital zoom) but I can't seem to find a correct way to do it. I also need to be able to zoom out and scale down the preview.
I was hoping to be able to do this using a ScaleAnimation but it doesn't seem to work on SurfaceView, nor the FrameLayout containing the SurfaceView.
I also tried setting the size of the SurfaceView using setLayoutParams but that doesn't seem to work too well on various hardware and it would be tough to animate smoothly.
How to achieve this effect? Right now I am starting to think I might have to implement this using GLSurfaceView but I'm very unsure.
Android :: 1.5 Quits For Apparently No Reason Whilst Animating - WIN DEATH
Nov 22, 2010I have an app that is working fine in 1.6 and up but crashing for apparently no reason in 1.5. The app suddenly quits with the following message...
CODE:............
This error happens when the app is 'idling' (ie not doing anything other than redrawing the screen). There is no state change and no user input. The error occurs after the same amount of elapsed time whatever I set the frame rate of the app to and occurs both on the emulator and device. Changing what I display on screen can stop the error but there appears to be no logic to this (in one instance not drawing a large image stops the error but elsewhere just drawing some text causes the app to crash in the same manner).
I am using SurfaceView for animations following the basic procedure in the Lunar Lander sample app.
Animating A Character In Eclipse?
Jan 22, 2012I got to make a really nice menu, with all buttons working...but when I got to the part of creating a character and making it move, I just couldn't find info anywhere.
how to create a character, and to make it move left/right when I press some kind of button? ( and how to make that special button too)
Android :: Xml Parser With Expandablelistview
Oct 27, 2010I need to implement an xml parser and the parsed result into an expandablelistview.
View 1 Replies View RelatedAndroid :: ExpandableListView Won't Redraw
Jul 29, 2009I have an expandable list view with a static array for the group data and an SQLite database for the child data. It is implemented with the BaseExpandableListAdapter and works great, except, when I edit the database to delete or add children to the list I do not see the changes onscreen. It looks like I can use the registerDataSetObserver method to notify the adapter and expandable list of a data change. What I have to do in the callback to make Android redraw the list after data changes is what I need to know. Can I do it? Documentation on this part of the SDK is a bit sparse and expandable list view example code is not a good match. Can anyone offer advice on how to use a DataSetObserver? It feels like I have to switch over to a Cursor type adapter.
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Dec 15, 2009This is my ExpandableListView
CODE:..............
When I execute this in emulator, green(childDivider color) is all over the place.
It seems if childDivider is ColorDrawable, it has no bound.
Android :: Filter In ExpandableListView?
Mar 18, 2010I have an ExpandableListView with several groups and each group contains several children. I want to make this list searchable, just like a regular list view. I have a SimpleCursorTreeAdapter (mAdapter) for this expandlable list.
I tried to use the built in list filter using:
CODE:.......
The above code does not work for filtering.
How can I implement the search/filter functionality?
Android :: Onchildclick In ExpandableListView?
Jun 17, 2009I need a solution how to get the OnChildClick working for my ExpanableListActivity.
when starting of this project the Listener was working, but now i get nothing out of it?
i tried setting the listener through: "getExpandableListView().setOnChildClickListener(this);" at several point, but it isn't responding.
Here's the source code:
CODE:............
Android :: LinearLayout In ExpandableListView
Jul 18, 2010I want to inflate a childView of ExpandableChildView component.
Code:.............
Where linearOpt is a vector that contains a lot of LinearLayout objects that I have instantiated.
CODE:..
This is R.layout.itemrow xml:
But I received this error:
CODE:.................
Android :: Expandablelistview Can Not Use NotifyDataSetChanged()?
Oct 20, 2010I want to refresh my expandablelistview, but it seems there is no way to use notifyDataSetChanged()? how can i refresh my expandablelistview?
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May 14, 2010I'm trying to add a context menu to my ExpandableListView. I've implemented onCreateContextMenu() and onContextItemSelected() but if I hold my finger on a menu item context menu doesn't appear. What's my mistake?
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Aug 12, 2010I have an ExpandableListView bound to a SQLite database. To simplify things, lets assume the database contains two columns: title and body. In the ExpandableListView, there is a group for each title, and a childfor each corresponding body.
Now to make things more interesting, some of the rows in the SQLite database do not have a body (that is... they only have a title). As you can see, if there is no body, then there is no reason to expand the group... because the child will be empty (i.e. String body == "").
I'm searching for a way to catch a situation like this, and skip the group's expansion. I don't want a blank child to be expanded. To put it in psuedo code, I want something like this:
CODE:...............
Android :: Refreshing Data In ExpandableListView?
Apr 24, 2010My problem is when I want to refresh data in ExpandableListView while being in that current activity. I create adapter and when I want to add new data to list I call again constructor of that adapter(it is my private variable) with all new data....and then I call onContentChanged() method to redraw my list.
But what happens is that I cant expand my list any more...like it is blocked or something and logcat isn't saying anything...
This is the code that i call after setting new data in arraylists and maps:
CODE:....................
Android :: Create A ExpandableListView In One Activity?
Nov 2, 2010I'm trying to create a ExpandableListView in one activity. I've looked in apis demos, and I've created ExpandableListView. The problem is, that I need to have this ExpandableListView in activity that is already created, and not in a new one.
I've used this code:
CODE:..............
Android :: Possible For The Child Of An ExpandableListView Also Be A Parent?
Nov 5, 2010Is it possible for the child of an ExpandableListView also be a parent?
For example, I need something like the following: ParentA ChildA ChildB ParentB ChildC GrandchildA? GrandchildB? ParentC
Android :: ExpandableListView Indicator Over My Text
Dec 2, 2009I'm using an ExpandableListView in one of my activity in a RelativeLayout
CODE:.............
And I'm using a custom expandableListAdaptaer which group view is:
CODE:............
(Found on examples of API_Demos, ExpandableList1)
A user of my application report me this photo http://binomed-android-project.googlecode.com/issues/attachment?aid=-... As you can see, the indicator of group items is over the text of group item despite the padding of 36...
And if I'm running emulator WVGA800 or an emulator with "abstracted LCD density" to 240 I have the same problem, but with my phone (HTC G1), I don't have any problem.
What is strange is that I try the application API_Demo with an emulator WVGA800 or an emulator with "abstracted LCD density" to 240 and I go to ExpandableList1 activity and all is alright !
I also try to copy the inner class available in ExpandableList1 for adapter and I launch it into my activity and I also have the problem see on photo
I am forced to manage density into my adapters in order to adjust the padding?
Android :: Customize The Parent In An ExpandableListView?
Sep 16, 2010I'm trying to customize the parent(or header) for an expandablelist and I haven't found a solution yet. I want an imageview and two textviews in the parent. This is driving me insane atm.
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May 12, 2010Is it possible to make a multiple choice list with android:choiceMode="multipleChoice" or setChoiceMode(ListView.CHOICE_MODE_MULTIPLE) on an ExpandableListView? I am able to do this with CheckBoxes on a plain ListView, but it doesn't seem to be working with ExpandableListView. In the latter, clicking the list item (either parent or child) does not affect the checkbox as it does in the former.
I have noticed that it is possible to click exactly on the checkbox to make it toggle, but this is a very small target.