Android :: Advanced Gradients - Thumb Positions?
Oct 16, 2010
I am trying to create a gradient drawable to depict a ratio of something. As a general example, lets say you were looking at a listview containing a fleet of cars. The background could be a fuel gauge - I don't want a smooth, wide transition. I want a very tight transition, and I want to be able to set where that transition takes place.
Here's what I'm staring with, but I'm not getting very far.
CODE:......................
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Sep 26, 2010
Can someone explain the diiference in these two apps. It looks to me that the App Killer is included in the Advanced Task Cleaner.
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May 3, 2010
How can I set custom thumb for fast scroll in listview.
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Sep 5, 2010
Do I need to implement a custom thumb Drawable?
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Jun 11, 2010
I have set negative paddings on my custom seekbar so that the round thumb image can go outside the bar, but the thumb isn't rendered out there, is there anyway to force the thumb to be drawn outside those bounds Sorry guys, I'm new to Android development, and have been tasked with fixing an existing application. The problem is that we have a custom rounded looking track bar, which consists of two rounded 'end cap' images and a 1 px background that is tiled to create the seekbar. As far as I can tell there was never one image that could be set as the background of a normal SeekBar, which is why a custom one was created. The thumb is a circle and needs to 'fit' into the end caps - the three pieces of the bar are in a relative layout. Right now I'm kind of unclear as to how the 1 px background png gets stretched as the seekbar bg, otherwise I would try to tack on the two endcaps onto that drawable some how?
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Oct 19, 2010
My question today relates to the android home screen and where it stores icon / widget positions. Specifically, I am interested in accessing the positions and sizes of any icons that are currently being displayed. I have, so far, been unable to find a method of retrieving the positions of other applications but i figure it must be possible in some way due to the presence of third-party home screen applications. Ideally, I am hoping to query the positions of whatever is on the screen at the moment from a live wallpaper and adjust my rendering accordingly.
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Sep 30, 2009
I need to implement a screen containing a list of blocks one below the other. Each block will contain mutiple superimpose elements (Images, text) for which the relative position needs to be specified with respect to the top left corner of the block.
For creating the list of blocks i have used listview. For each block i tried to use relative layout.This works ok when the phone is in landscape mode and absolute position is specified relative to left edge of the phone. But when the phone is put in the portrait mode the layout gets distorted.
1) What layout can be used for this scenario?
2) Can relative positions be specified in terms of percentage of screen width/height instead of pixels?
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Aug 27, 2009
How can I retrieve the positions of the selected item in a multichoice listView ? The getSelectedItemPosition method returns only the first one...
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Jun 2, 2010
I need to implement a screen having around 1000 thumbnails. This screen should support gesture based scrolling as well as fast scrolling using a scrollbar with thumb. So if user want to move from page 1 to page 100 he can just drag the thumb and reach there. But there is no such control in Android. There is seek bar but its look and feel is not similar to what I want. I also want to flick and swipe functionality which can be inherited using horizontalscrollbar. So i want to add functionality of horizontal scroolbar as well as of seekbar in my application.
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Mar 30, 2010
Seeking help to design a layout as shown here:
http://docs.google.com/Doc?docid=0AQhgDtGvE2HgZGZ6cmtua185MTd0eGdyZmc&hl=en
The major challenge I face is aligning the components at desired positions. Please refer the three buttons(icons) and the way they are positioned.
Literally, going nuts, thinking how to position those exactly at the desired places.
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Jul 21, 2010
Suppose I have the following layout
CODE:......................
How could I swap position of button01 with button02? And would it work also for swapping button01 with button05?
Before asking what I have tried so far, I don't even know where to start. I googled but the only answer I could find was about AbsoluteLayout.
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Nov 18, 2010
Hi, i have a googlemap app that displays two items (itemizedoverlay class) and i have a Update button. When i press the update button, i want to remove the items from the map, and put again the same items but with the new latitude and longitude values (i have a service that actualice the latitude and longitude fields that i have in sharedPreferences, and also i recibe the other position by a bundle)
what i am doing wrong? when i try my code, the items of the map doesn't be removed.... just new items appear... but i want to remove the old ones
CODE:...........
And these are my two functions:
CODE:............
I also tryed with invalidate() on the mapview but it doesn't works... still paint the old items...
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Jun 7, 2010
I'm currently working on a very simple aplication, and I intended to make it change the visual aspect depending on the screen size. The application just has 6 buttons like this:
I'm using the AbsoluteLayout, and changing the x and y of the buttons with the methods offsetLeftAndRight and offsetTopAndBottom. I'm not changing the layout of the buttons in the xml file, so the all start in the same place.
However, if I use this methods inside the onClickMethod they sometimes appear where I want them, sometimes don't (can't figure out why), but if i use them in the onCreate method, nothing happens.
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Aug 18, 2010
How to change the rectangular thumb to round thumb in android seek bar?
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Feb 24, 2010
Can the application customize the scroll bar colors like the thumb color/image or the background color image.
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Apr 3, 2010
I'm creating custom View that shows when necessary scrollbars. already figured out that i need to call initializeScrollbars(TypedArray) method but have no idea how to specify thumb Drawable when my custom View is created at runtime (not from xml layout).
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Apr 20, 2010
I'd like to port my iPhone app to Android. The interface is constructed with artwork designed for 320x480 resolution. What steps do I need to take when I'm constructing the XML interface for the Android so that my GUI will be compatible with the different screen sizes (or at least the most popular ones...)?
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Jan 10, 2010
I thought it may have been my eyes, when I thought I saw an upside-down Android icon for a contact the other day, on my Android 1.5 device - Samsung Moment. I was playing with contacts just now, and I saw the upside down icon again. Then I was curious, went to see other contacts, and I noticed the Android icon facing right, then facing left in other instances. There is no rhyme or reason as to when the Android icon will change positions, but it is there.
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Jun 15, 2010
I am trying to draw a cupola circles at random positions in an Android application. I draw them on a bitmap and then draw that bitmap on the canvas. This is the function where a draw the circles:
private void drawRandomCircles(int numOfCircles) {
Canvas c = new Canvas(b);
Paint cPaint = new Paint;
cPaitn.setColor(Color.RED);
for(int i = 0; i < numOfCircles; i++) {
int x = Math.Random % 100;
int y = Math.Random % 100;
c.drawCircle(x, y, 20, cPaint)
}
}
The Bitmap b is global. And after calling this function I just draw the bitmap in the onDraw method. Now the problem is that I only get one circle drawn on the screen, no matter the size of numOfCircles.
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Nov 24, 2010
I have two ListViews. Is there any way to synchronize the position of ListViews when I scroll any one of the Lists
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Sep 2, 2010
I have rectangles and images and i want to show that images on that positions that rectangle holds in it...it is all dynamic. and i am using bitmap class to display but now i have to set positions according to that rectangle...
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Jun 1, 2009
Is there a way to manipulate the positions of *background* images in an ImageButton?
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Nov 5, 2010
I go back and forth about how to name activity classes.Activity seems to imply a verb, like EditContact, for example.But that seems more like what one would call the Intent that triggers EditContact.Should the activity be named ContactEditor instead?
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Jul 20, 2010
I have a mapview where I want to track the user's current location. GPS as well as 'use wireless networks' is activated in my phone settings.
Nevertheless, since I'm indoor I don't get a GPS fix, therefore the location is determined via network; wifi spot is available.
I have the Google Maps app running as well as my application running.
Strangely, the current location differes between Google Maps and my application, where the Google Maps is very accurate while in my app the location is somehow off a few 100 meters.
In my application I basically do the following (for debugging purposes now):
1) initially place one marker on the map: geopoint retrieved via locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
2) initially place another marker on the map: geopoint retrieved via locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
This will put the last known locations of both providers onto the map (eventually last known from outside my app).
3) then for the regular updates (since I don't get a GPS fix anyway indoor here), I do:
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, baseLocationListener);
You can see for the frequency and distance I pass the 0 param in both cases.
In the app manifest, the following permissions are granted:
android.permission.ACCESS_COARSE_LOCATION
android.permission.ACCESS_FINE_LOCATION
android.permission.ACCESS_MOCK_LOCATION
Actually my baseLocationListener does get called, which I see in the log, but the updated location is somehow the same as the last known current position (of LocationManager.NETWORK_PROVIDER), same lat/lng.
I thought maybe I overlooked something or missed a parameter or setting, or my code has a bug. Therefore I installed some other (3 in total) LBS apps from the Android market that also show the current user's location. The current locations displayed in those apps are equals to the one in my application - and they're all some 100 meters off - but at least all the same.
See the screenshot here:
http://img33.imageshack.us/img33/8679/mapproblem.png
Now I am wondering:
1) as I understand, getLastKnowLocation is system-wide and not app-wide, why are there differences between the location in Google maps and all the other apps?
2) does Google Maps not update the lastKnownLocation of a provider?
3) does Google Maps use a different custom location provider (i.e. due to licensing reasons) other than GPS_PROVIDER or NETWORK_PROVIDER as they are in the SDK?
4) how do achieve the same accurate result with the NETWORK_PROVIDER like Google Maps does?
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Sep 26, 2010
I have a custom ViewGroup. The idea is to be able to place controls at absolute positions and then have the ViewGroup scale those controls based on the difference in the screen dimensions with respect to the original design dimensions. I am using the code below. In response to the 'onMeasure' message, I am storing the width and height of the view. Then on the 'onLayout' message I am computing new dimensions for the child controls and adjusting their sizes proportionally. This all works to some degree. However for certain controls (e.g. button controls), the control resizes, but the text inside does not remain centered within the control. I am thinking that there is some other call I need to make to update the child controls after I change their size.
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Jul 9, 2010
I am using seek bar to control volume of the device. I am able to change the volume of the device using thumb of the seek bar just by dragging it on touch pad. But when user presses volume(side) keys I need to set seek bar thumb position accordingly.
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Aug 4, 2010
How can I connect my USB thumb drive to EVO? Want it to transfer files and extra storage. Is there a wire that enable this connection (mini USB and full USB?)
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Jul 20, 2010
It seems that the problem is in the data quality of the different map provider that are used for Google Maps and MapView in SDK, which differ.
The map tiles coordinates don't seem to be very accurate, just like in the public google maps web api / tiles.
See this screenshot for an example, where I pinned the same geo point. http://img339.imageshack.us/i/gmaps2.png/
The map using the public map api is off a few hundred meters. Seems that we just have to live with it.
CODE:................
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Dec 30, 2009
I've been trying to figure out how to make some sense of a dumped XML layout, and it's progressing 'pretty good'. The only thing I'm currently unsure about is the following:
When I use the command:
aapt dump xmltree <pathofapk> <pathofxmlfile>
I get the following result:
CODE:.............
That's all good, but what I'm trying to figure out is how to convert the following code into the XML layout file:
CODE:.................
Converting those values to decimal would result in:
CODE:.................
All good, but I've been trying to figure out what the (type 0x5 means). With all other types, the result is defined in the Android.util.TypedValue.class file
Decompiling that, gives the following result for 0x5:
CODE:...............
Makes sense, in a way. But, I need to know what kind of value it is, so looking down, I find the following value:
CODE:.............
But, when I try to use 2561mm and 1025mm (It's a tad much anyway, 25cm is.. larger than my screen), The whole screen is filled with the 'parent LinearLayout'.
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Nov 18, 2010
I actualice the positions of the items of mi googlemap but they only get repainted when i move or zoom the map...
I want that every time the possitions got updated then they get repainted on the map without having to move or zoom it with my finger
Invalidate is not the answer, because it makes a full repaint of all and needs to redownload the map from internet...
My code:..........................
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