So for the different screen sizes, you have the following sizes for the launcher icons:
ldpi (240 x 320px) icon 36x36, 120dpi
mdpi (320 x 480px) icon 48x48, 160dpi
hdpi (480 x 800px) icon 72x72, 240dpi
xhdpi (720 x 1280px) icon 96x96, 320dpi
(Google Play 512x512)
If you use those sizes without padding, I've noticed that the icons are bigger than for example the ones youtube and facebook use. Does anyone know the size of those icons (or the padding)?
Even better, can I download somewhere templates with the same sizes, such as http://developer.android.com/shareables/icon_templates-v4.0.zip?
Thanks
The best example I have seen is foursquare's open source android version. If you download the source you'll be able to browse through the res/drawable-xxx folders and see how they handle various cases with their icons that appear to be approximately the same size as, say, facebook's android icons (maybe a pixel or two more padding).
I recommend checking out this project and simply examining their files in your photo editor of choice.
Just as a note: foursquare is no longer open sourcing their app (and hasn't for some time now...), so the code found at the above repo may be a little stale.
Related
I am creating to show virtual card swipe view for left to right and right to left. so, am trying to give common width & height(xxxhdpi-values dimen.xml) for below mentioned mobiles in Android UI part.
Samsung Galaxy note plus
6.8 inch, 1440*3040 , 498 PPI.
Google Pixel XL3 Android Mobiles.
6.3 inch, 1440w*2960h , 523 ppi density.
both detecting xxxhdpi values folder. so, If I given common width dp values. then, both screen design showing different card UI alignment. UI is not properly fit with the screen in both devices.
so, If I am trying to adjust Samsung device, google pixel design will get collapse/not fit.
so, am thinking, this is the good solution one like I want to create separate values folder for this two devices.
very long back, I have this solution. please find the link below:
How to Create Seperate Values folder Sony Xperia Z1 in android
Ex: I tried for this Samsung: (its detecting in xxxhdpi-values folder(640dpi)).
dp=px/(dpi/160) so, dp = 1440/(640/160)=360 . so, I we got values-sw360dp.
Exactly, I dont know, this method is correct or not, nowadays.
I referred this links also. but, still am not clear idea.
Different values folders in android
How to define dimens.xml for every different screen size in android?
can anyone please help/suggest any alternate/better solution on this UI issue.
It maybe help for more android developers also.
Thanks Advance.
Reference: support different pixel density:
https://developer.android.com/training/multiscreen/screendensities
ldpi Resources for low-density (ldpi) screens (~120dpi).
mdpi Resources for medium-density (mdpi) screens (~160dpi). (This is the baseline density.)
hdpi Resources for high-density (hdpi) screens (~240dpi).
xhdpi Resources for extra-high-density (xhdpi) screens (~320dpi).
xxhdpi Resources for extra-extra-high-density (xxhdpi) screens (~480dpi).
xxxhdpi Resources for extra-extra-extra-high-density (xxxhdpi) uses (~640dpi).
I'm making an android App that shows images at full screen.
I learned some about dpi and dp, but I didn't find how many pixel must be the largest side of my images (in prospective to good fit also in landscape mode) to appear good in different devices.
As in the documentation, the most used screen configurations are normal with hdpi, xhdpi and xxhdpi density:
So, if my thinking is correct, I can make only one image to fit the xxhdpi to works fine also with the other two densities, and put it in Android Studio under the "res/drawable" folder (without qualifier).
Specifying the image size in dp in the layout, Android should scale the image for the smaller configurations.
But, for the xxhdpi, how many pixel must be the largest side of my image, in pixel, to show good?
Edit: how many pixel must be the longest side of my image to be showed properly in a device with xxhdpi density without the image appearing grainy?
All images are photo, not icons, so I can't use the vector graphics.
By looking at the Android Documentation. One can estimate the size of the picture. look at below picture
So, your image resolution should be in similar resolution
LDPI: 200 X 320px
MDPI: 320 X 480px
HDPI: 480 X 800px
XHDPI: 720 X 1280px
XXHDPI: 960 X 1600px
XXXHDPI: 1440 x 2560px
A little bit of +/- won't affect the outcome because with these standard sizes the aspect ratio of any portrait picture should be respected.
Well, if you put the image which fits the xxxhdpi inside the folder drawable, then it will fit all the screens.
But there is another way to use only one image instead of using multiple images for different resolutions. It's by using svg images which are vector images that will not be affected by zoom in or zoom out.
To use svg you need to follow these instructions:
Make the icon to be icon.svg
In the Android Studio, right click on drawable folder
Choose New -> Vector Asset
Choose Local File (SVG, PSD)
Choose your svg file
Click Next and choose the name
Click Finish
In the app build.gradle add the following inside android block:
vectorDrawables {
useSupportLibrary true
}
In the xml layout file, add the following:
<AppCompatImageView
android:width="wrap_content"
android:height="wrap_content"
app:srcCompat="#drawable/your_svg_file"
/>
Android have ratios defined for a image to set in all different drawables
Android icons require five separate sizes for different screen pixel densities. Icons for lower resolution are created automatically from the baseline.
mdpi: 160 dpi 1×
hdpi: 240 dpi 1.5×
xhdpi: 320 dpi 2×
xxhdpi: 480 dpi 3×
xxxhdpi:640 dpi 4×
Above size is for normal pixel icons. There are fix android size for Action bar, Dialog & Tab icons, Launcher icons & Notification icons
Check this link for more details http://iconhandbook.co.uk/reference/chart/android/
You have to take a look at the current market of smartphones.
Here you can see the screen sizes and resolutions of the most popular devices in the market.
http://screensiz.es/
Order the list in pixel per inch and you will see that top smartphones have resolutions bigger than 500 ppi or another way to see it, much bigger than 72ppi of your images.
If you have enough space to store or mechanism to download images try to test with full quality. If thats too much try to find a compromise. Lower image quality and see the result in high resolution screen.
Note that you didn't posted here the total size of image, in case is bigger than screen size, take a look at total size of image and compress it to fit your needs, maintaining as much as possible the resolution.
Edit: Looking only to size of image in pixels, the current biggest screen in smartphone is 2560 x 1440 pixels, so you wont need any image bigger than this.
If I understand your answer correctly, you are talking about images (pictures of lovely cats and dogs?) and not about icons?
I prefer putting images into the nodpi folder.
nodpi Resources for all densities. These are density-independent
resources. The system does not scale resources tagged with this
qualifier, regardless of the current screen's density.
Afterwards I would create a fullscreen ImageView and let imageView do the scaling if needed
I was working on android app based on phone. However, recently the app need to support the tablet.
The design was based on 1920 * 1080, I put all images/ icons into the xxhdpi folder and for lower resolution I just let android to help me rescale it.
The problem is , it works well on phone(1280 * 800 5"), but when I use tablet to check it (say , galaxy tab 2 which resolution is only 1280 * 800 10.1" and 1024 * 600) but it looks like very blur . How to fix it ? Thanks for helping.
Added
<supports-screens
android:resizeable="true"
android:smallScreens="true"
android:largeScreens="true"
android:xlargeScreens="true"
android:normalScreens="true"
android:anyDensity="true"/>
already but still the same
Update: I also find that the dp is too small for the tablet
<style name="AppBaseTheme" parent="#style/Theme.AppCompat.Light">
<!-- API 11 theme customizations can go here. -->
<item name="android:actionBarSize">60dp</item>
</style>
I was using a custom actionBarSize , it works nice on phone, but the 60dp is too small for tablet, how can I fix it as well? Thanks
Well, I don't think you following the guidelines when you're using images. The android documentation doesn't say anything about screen resolutions when dealing with images, it rather focuses on pixel density when referring image resources (usually drawables) which is explained here. Remember that you can have two types of images (as far as I know):
Image resources (usually drawables)
Image assets
When using drawables you have to focus on pixel density rather than screen resolution because as you have just found out a small (or regular) screen device can have exactly the same resolution as a large screen device, to top it off, sometimes a normal screen device (handset) can have a higher resolution than a large screen device (tablet) where obviously in this case the handset has a much higher pixel density. So, you need to follow their guidelines take a medium pixel density (mdpi) device as the baseline to design your image resources as follows...taking a 96px image as an example...
for a medium density device (mdpi) provide an image with 96px in the drawable folder...this is your baseline
then, target a high pixel density(hdpi) device by multiplying your baseline image by 1.5...that is, 96x1.5 = 144px...place this image inside the drawable-hdpi folder with exactly the same name
a x-large pixel density device image would be the baseline image multiplied by 2 (96x2=192px). This goes inside the drawable-xhdpi folder
for an xx-large picel density (xxhdpi) device multiply the baseline image by 3 (96x3=288) and place it inside the drawable-xxhdpi folder
Notice in the link provided that you don't need to provide an image for a device with a low pixel density since Android scales it down from mdpi without any problems...
Note: Android also supports low-density (LDPI) screens, but you normally don't need to create custom assets at this size because Android effectively down-scales your HDPI assets by 1/2 to match the expected size.
In your case, whats happening is that your Galaxy tablet has a lower pixel density and Android down-scales the image from a xxhdpi to whatever density the tablet has (hdpi or xhdpi)....so, it your image is a 512px image Android would down-scale it to 341px for xhdpi or 256px for an hdpi device.
If you follow these guidelines and focus on pixel density, you should be fine. However, for images in the assets folder there's no much you can do apart from using the ScaleType enum or using stretchable 9-patch images
Hope this helps
Update
Actually, according to this link, the Galaxy Tab 2 has mdpi screen, which means your image will be scale down three times from xxhdpi. You should provide the same images with different sizes inside the appropriate drawable-x folders
I know its a way too late but recently I faced the same issue about the way app launcher icons looks on a tablet and they are blurry. I'm sure that AOS honestly chooses mdpi drawables for tablets with mdpi display density and thats the problem. So I solved this by placing smartphones icons to a tablet resources dirs as following (left column - usual smartphone drawables-density and the right - tablet dirs):
drawable-xhdpi -> drawable-large-mdpi (these are 96x96px)
drawable-xxhdpi -> drawable-large-hdpi (these are 144x144px)
drawable-xxxhdpi -> drawable-large-xhdpi (these are 192x192px)
drawable-xxxhdpi -> drawable-xlarge (these are 192x192px)
I'm not sure if last two has to be 288x288 px but since I don't have such icons in the project I guess 192x192 should be enough.
I want to make my application to multiple screen support. so to achieve this i read the Android developers guildeline https://developer.android.com/guide/practices/screens_support.html and i have created the different drawable and layout folders to put different size of images.
I tested the application in different devices and it looks fine in those devices, while i found that in one of 7" tablet the images are too small. to confirm this i created simple project and put same name of images in different folder and found that this device uses ldpi drawables and in generally the size of ldpi drawable used to be 36x36 and that causes the issue, if i increase this drawable size then it will not compatible with other low-density devices.
Here is the Dispaly Metrics of the device in which i am having a problem.
{density=0.75, width=800, height=444, scaledDensity=0.75, xdpi=160.0, ydpi=160.42105}
How to deal with this problem ? if anyone have this issue before then please give me some advice. any idea and help will be appreciated.
Thanks & Regards
You can get more control over this:
Specify multiple different images for different screen resolutions and densities. To do so read supporting multiple screens. If you need even more precision in image scaling and quality you can use the fundamental size of screen attribute which is sw<N>dp - you can specify the smallest width of the screen where your image should be used. This is a qualifier name for a resource folder.
Some values you might use here for common screen sizes:
320, for devices with screen configurations such as:
240x320 ldpi (QVGA handset)
320x480 mdpi (handset)
480x800 hdpi (high density handset)
480, for screens such as 480x800 mdpi (tablet/handset).
600, for screens such as 600x1024 mdpi (7" tablet).
720, for screens such as 720x1280 mdpi (10" tablet).
Just specify your device width and put your edited image that fits the best in corresponding sw<N>dp folder in your case sw<444>dp.
You should also have a look at other qualifiers that make Android choosing image at runtime (screen density, Available width, Available height, Screen size or Screen aspect). By combining these qualifiers and testing carefully you will be sure that the user has the best experience on each device.
Shortly, put your image under drawable-sw<444>dp folder. (444-smaller screen metric)
I have created four versions of my launcher icon for ldpi, mdpi, hdpi and xhdpi devices. They are of dimensions 36x36, 48x48, 72x72 and 96x96.
I'm wondering what will happen when using a large screen. Consdering large screens are rouglhy 7" + in size a ldpi, large screen will surely not want a 32x32 icon image, located in a drawable-ldpi folder.
I cannot find anything on the dev guide that indicates what icon sizes to assign to large and xlarge devices. Presumably I would put a larger copy of the icon in the drawable-large and drawable-xlarge folder. However, I do not know what sizes to use. Does anyone have any recommendations?
Google provide an online tool called Android Assest Studio which creates the launcher icons in the correct size for you. http://android-ui-utils.googlecode.com/hg/asset-studio/dist/icons-launcher.html
A 7-10" tablet doesn't need anything unusually large. You don't need anything bigger than a 96x96 launcher icon for this use case. There is a table in the Launcher Icons section of the design docs that shows which sizes correspond to which densities.
Have a look at the Declaring Tablet Layouts section of the design docs for more info on how to organize resources for 7-10" screens. (Note that the resource used will depend on the screen density, it is possible that a 7" tablet will have an mdpi screen.)