I'm trying to apply a linear gradient to my ListView.
This is the content of my drawable xml code...
So I apply it to my ListView with:
android:background="@drawable/shape_background_grey"
It works but it looks very "banded" on emulator and on a real device too.
Is there any way to reduce this "behavior"?
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I have a gray gradient drawable (png image in res/drawable). If I draw it on a white Canvas it looks banded (not smooth). If I put the gradient on white background in GIMP, and then draw this drawable on the Canvas, it looks great. What's the problem? I tested this on Nexus One. Calling setDither(true) on the drawable has no noticable effect.
View 2 Replies View RelatedGiven a closed Path object result is like this: http://www.tutorialguide.net/images/adobe_photoshop/0043/001.jpg. Although that is a rectangle I'm looking for something which works with any closed Path.
View 2 Replies View Relatedseems pretty straightforward.
CODE:..............
But doesn't work!
It scrunches the layout background as the background to each button, I want it to span all three buttons...
I have the following linear layout. What I don't understand is if I set the background to another image, the padding information are reset. Is there a way to prevent this?
<LinearLayout android:id="@+id/aPanel"
android:orientation="horizontal" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:background="@drawable/bkground"
android:paddingLeft="15dp" android:paddingRight="15dp">
<!-- some children here -->
</LinearLayout>
I see the position of the children get shifted when I change the backround drawable of the linearlayout 'aPanel'.
Is there a way to have 2 gradients in a drawable xml using either a <layer-list> or <shape> or some combination of them?
View 1 Replies View RelatedHow can I get rid of the gradient at the top of my screen (the very top of the blue in the screenshot below... below the notification bar)?
View 1 Replies View RelatedI have a LinearLayout and I am setting a Background image. I am using a PNG24, and the image has a gradient in it. When I see the image on the computer the gradient is perfect, but when I see it on the emulator or on a real phone, some colors are lost and I see only like 10 colors, so I see lines and not a perfect gradient. Is the emulator 'compressing' the images? Should I make them in other format?
View 3 Replies View RelatedI'm trying to apply an Alpha gradient to a bitmap that I've created from a PNG. I want the image to be opaque at the top and fade to transparent at the bottom. I know this can be done be using getPixels and setPixels for Bitmap and iterating through each row of pixels in the Bitmap and setting the alpha values accordingly, but i was hoping there was a slightly neater way of doing this. I have been looking at the LinearGradient Class and using a Porter Duff transfer mode, but i don't seem to be having much luck with this. It seems that my source image is lost when i apply the Shader to the drawable. Anyone have any tips on how i might apply an alpha gradient to a bitmap?
View 2 Replies View RelatedIn my app i have gradient as drawable which i am using as background and i want it to make it look as smooth as possible. After googling and trying by myself i came up with the following. On nexus one if you call only setDither(true) your gradient is still banding so you have to set PixelFormat like this Window.setFormat(PixelFormat.RGBA_8888). But on the other side G1 does not support RGBA_8888 so calling it make the gradient even uglier than before so Window.setFormat(PixelFormat.RGBA_8888) will not work well on devices that don't support it.What is the correct way smooth my gradient on all devices on which my app will run.
View 1 Replies View RelatedI have got another mysterious issue. So, I am setting a background image for LinearLayout. This image contains gradient. Don't know why, but after I launch application the image appears to consist of several parts that actually form "smooth transition" of gradient, and that's why it seems that background image is not a gradient.
View 1 Replies View RelatedI've been looking at some issues with the background of our application, particularly on high-density devices (240 dpi, 480x854). I managed to eliminate banding on existing devices (i.e. G1/G2, 160 dpi) by applying the android:dither="true" attribute to our nine-patch image, which is a 1x480px PNG with no noise added. Looks great. However, if I use the same image on a higher resolution device, the banding is pretty nasty looking. Same happens regardless of whether I use a shape+gradient, a noisy nine-patch PNG, or an android:dithered nine-patch PNG -- even if I create an 854px-tall image. Is the use of gradients going to become a problem on high screen density devices, purely because of the display colour depth, or is there any way to solve this?
View 5 Replies View RelatedI have a shape with a gradient that I'm using as a divider between ListView items. I've defined it as follows:
<?xml version="1.0" encoding="UTF-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:startColor="#ccd0d3"
android:centerColor="#b6babd"
android:endColor="#ccd0d3"
android:height="1px"
android:angle="0" />
</shape>
I would like to add 6 pixels of padding on either side of the gradient, so that it doesn't extend from edge to edge of the screen.
However, no matter where I put an android:left="6px" and android:right="6px", it doesn't seem to take effect. I can put it in the <shape> element, the <gradient> element, or in a separate <padding> child of <shape>, and it doesn't change anything.
How can I add padding on the left and right of my list divider?
In my Android application I've hidden the default title bar, introduced a TabView and added my own titlebar under that TabView's tabs. At the moment, I'm using the ?android:attr/windowTitleStyle style which makes my new titlebar look gray and gradient. It looks pretty good, but my screens are looking pretty grayscale. I'd like to spice things up a bit by making this titlebar a different color gradient.
What am I looking at here? Creating my own image and using it? The ?android:attr/windowTitleStyle style seems to expand depending on the height of your custom titlebar; so I'm not sure it's actually a single image.
I've attempted to throw a LinearLayout over it with a bit of translucency (ex: making the color #800000FF), but the gradient style I have behind this LinearLayout disappears.
Update:
Per my answer down below, I've figured out that I can create an XML file that defines a gradient and use that. It works fine inside a LinearLayout (titlebar_gradient) I have on my layout. However, it is not working on the outer-most LinearLayout (background_gradient). Could someone tell me why? As I understand it, the ListView should be transparent...
code:...............
I want to make a custom seek bar having color gradient as shown in the below image URL.
View 6 Replies View RelatedSeems my original post ("ugly pngs...") somehow disappeared :( nvm.
I have a problem with a png resource that has gradient fade-out alpha.
The png looks great in the emulator, but displays an artefact known as "color banding" (http://en.wikipedia.org/wiki/Colour_banding)
Has anyone surpassed this issue ?
My designer wants to trop a shadow behind his icons, and that's where the bands appear.
What are my options ?
How would I extend TextView to allow the drawing of text with a gradient effect?
View 2 Replies View RelatedIs there a way to draw a circular gradient mask on a bitmap in Android? Trying to produce something similar to a foggy window. Click the window and a transparent circle shows up revealing whats behind the window. Prefferably using a gradient so the center of the circle is completely transparent and the further out from the center the less transparent. Is this possible?
View 1 Replies View RelatedI am creating a button programmatically. It is rounded and has a gradient background, and works fine and looks nice, but I couldn't do two things I wanted:
Set a 1 pixel stroke with a given color. I tried getPaint().setStroke(), but couldn't figure how to set the stroke color. How should I do it?
Align the gradient to the bottom of the button, no matter what height it has. Is this possible?
For reference, this is the code I'm using:
CODE:...................
Does anyone know how to set the notifications behavior on the EVO? Specifically with Google Talk? I would like the phone to beep at me only once when someone sends a google talk message, and then not ever again for the following messages until I unlock the phone's screen and reactivate the google talk app. I think it already works this way for email, but not for Gtalk. Can this be done? And, I already know that if I open up the chat session, the sounds shut off on successive messages. However I would like it to stop the beeping without opening the chat window.
View 1 Replies View RelatedI'm trying to create a drawable in xml, a rectangle with one gradient on the top half, and another on the bottom half.
This is NOT the way to do it, apparently:
CODE:................
How can I do this, preferably in a way that makes it stretchable to any height?
Many times (not all the times), my emulator is running 100% of one of my two CPUs on the machine. Can anyone tell me why it is so, and how can I reduce the cpu usage?
View 13 Replies View RelatedReducing Lag Due to Location Based Services (Tested with myTouch)Only use GPS or Network Based Location services but don't have both enabled at the same time.I purchased the myTouch on 08/20/09 running Firmware 1.5 (Cupcake), Build Number COC10. I am also using the 4GB card that came with the phone.I found that Sherpa and Google maps tended be less than accurate and lagged significantly despite being in Downtown Seattle with 2 - 4 bars of service depending on building density.I also had Pedometer running (a free app from the Market). Sherpa was exteremely laggy to the point of being useless in both Carsel Mode as well as Map Mode. I didn't use Satillite nor Street View in any of my testing.
When I killed Pedometer, I found Sherpa seemed to improve a bit, but still, it was very clumsy to use due to lag. I then looked at "Security and Locations" services and saw both "Use wireless netowrks" and "GPS" enabled. I first disabled "Use wireless netowrks" and saw an immediate improvement in Sherpa. I reenabeld the Pedometer and still got a good response from Sherpa and Google Maps including reduced lag and more precise location. I then disabled GPS (and told the applications to cancel when asked to enable) and enabeld Network based services. Sherpa, Google Maps and Pedometer all responded well, location services improved in accuracy and little lag.
When I install my app on the phone to test, it is showing up to be a HUGE size, 11.35 MB. It is a very simple app that lets user browse through fun-facts. The only reason I can think of is that there are 14 JPEG files in the drawables which serve as background images of the fun-facts. The average size of these is about 500 KB.I'd like to trim the size of my app, so as not to use up the precious resources on the user's device. Other than just getting rid of the pictures, are there ways to optimize the size of apk file?
View 4 Replies View RelatedI want to customize the spinner behavior a little bit. I want to add a couple of buttons at the end of the drop down menu that is displayed when the user selects the control. Any idea how this could be done?
View 4 Replies View RelatedI have a package with two activities
1. A main activity 2. A search activity
The search activity is invoked by a search suggestion provider in two possible ways
1. By clicking directly on a suggestion invoking the search activity through a VIEW action 2. By clicking on the explicit search icon invoking the activity through SEARCH action
If it is invoked through SEARCH I stay on the search activity and show some text to the user. Now when I click the back button I go back CORRECTLY to the home page.
ODD Behaviour: However if I came to the search activity through the VIEW, I invoke a browser activity and call finish() on the search activity. Now I have the browser in my view. If I now go back I would expect to go back to teh device home page. But from now where the "main activity" is showing up.
I see in the logcat a message from ActivityManager indicating
moveTaskToBack: 8
I have tried various flags to invoke the browser activity the tried flags include new task previous is top and I have also tried both a singleTop and otherwise with the SearchActivity as well. Same end result.
1. I want to know the behavior of activity for the cases where onStop and on Destroy were not called like low memory situations.
2. I was registered my handler in on Create() and unregistering in on Destroy, what is the behavior if other thread sends messages to the registrants after the activity was killed by android without calling on Destroy. I know that those handler were not removed by GC as they are still referring by the thread.
3. Also suggest me to handle the above situations.
I have a ListView set up in single-choice mode like this:
<ListView android:id="@id/android:list"android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="#ff444444" android:layout_weight="1"
android:drawSelectorOnTop="false" android:choiceMode="singleChoice" android:scrollbars="vertical"
android:headerDividersEnabled="true"/>
When I press my finger on a choice, the selection changes from white text on light gray to black text on orange. But as soon as I lift my finger, the selection reverts to the original state. I'd like that chosen row to remain in the black-text-on-orange mode when I lift my finger so that the user knows what was selected in the list (my onClickListener has captured the selected row, of course). Is there a way I can tell the ListView that I want this behavior or something similar so the user knows what item has been selected?
I have a TextView which is inside a LinearLayout which is in the child position of an ExpandableListView. Without assigning a color state selector to the text view, the following behavior is observed:Text unselected - text paints as white Text selected - text paints as black.If I add a color state selector with a call to text.setTextColor(R.color.textcolorstatelist) then the following behavior is observed:Text unselected - text paints as black Text selected - text paints as black.I tried two versions of textcolorstatelist.xml and both produced the results above.
View 9 Replies View RelatedI am using a handler inside my service to display notifications at a certain time using the Handler.postDelayed method. My application runs fine on the emulator just as expected satisfying all cases. But when I installed the same on my HTC Wildfire, it simply doesn't happen as anticipated. Notifications are displayed at a random manner after the scheduled time and some notifications even fail. I'm monitoring my service from the Applications > Running Services and still my service is active.
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