I have developed an android application and run it on an HVGA emulator. It's running successfully on any HVGA device i.e. mdpi. But if I try to run on small screen resolution devices i.e QVGA then my buttons are looking as if they go down and dont fit onto the small screen...
So how can I run my android application on multiple screen resolution successfully?
follow these instructions
create a folder in yourAppFolder/res/ named layout-small (*more on this subject later)
insert in this folder all your xml layout items that need special treatment for a small screen (it is not necessary to copy all of "normal" layout files, but you can if you wish)
change the files in this layout as needed
What happens with this approach:
if the device has a non-small screen, the default layout (the one in "layout" folder) will be loaded and used, otherwise if the screen is in "small" category the files in "layout-small" will be used instead (only if one with the same name is available, otherwise the one in "layout" will be used
*About folder naming: that policy was the old one supported by android. Nowadays there is another one, more precise but more complex too (example: specify minimum necessary width). Anyway, this is still supported, just note that eclipse may suggest you some alternatives. Currently, i am still developing with the old naming policy.
I think it is better to design your layout for every screen size and resolutions. It is easy in android. Copy your layout from "layout" folder of resources and paste it in the "layout-land", "layout-xlarge", "layout-xlarge-land" and ... folders and change those settings you need in them.
you can check this link:
In the UI builder (part of the Eclipse plugin), you can build your interfaces for multiple screen sizes and resolutions. To make different layouts for different resolutions, simply follow these instructions to build alternate layouts:
http://developer.android.com/guide/practices/screens_support.html#support
Related
I'm wondering if it's possible to use different layouts based on a phone's screen size (not tablets, watches, etc.). I've already taken a look at this article, but don't seem to be having any success implementing what it suggests. Just for context, I'm using a ConstraintLayout for all of my layouts. I originally designed my UI using a Pixel 3 XL, and when I try to run my application on any other device, the UI looks distorted, its elements aren't anywhere they should be, and everything is just awful.
How would I go about making and assigning layouts for each screen size? Is there something else I could do instead?
Google recommend to create different res/layout directory for specific pixels, such as res/layout-1024x720，res/layout-1280x720，res/layout-1920x1080 etc..
#Inso is right, you can just save different versions of your resourses in different versions of your res/ subfolders (like layout-1280x720 or drawable-1920x1080). This not only applies to layout files but also to drawables and any other resource directory and you can create different versions not only by screen resolution but also by device API screen size and others.
I recommend you read the following documentation that explains all that is possible.
It might also be that you just chose the wrong layout type for your app. you should check the available documentation on layout types (there is a bunch out there) and see if maybe ConstraintLayout may have been the wrong pick.
I also recommend having a set of different virtual devices (from the emulator) having different screen sizes and running different APIs so you can test every now and them how your app performs under differnet conditions
I created a special layout for one of my activities in the /layout-small folder. The problem is that when I open my default layout (the one for which I have the small version), Eclipse decides to open the small version instead! At this point I go back the 'normal' layout but it's displayed for a 2.7" screen and if I make any change to visualize it in any other screen size Eclipse decides to send me to my 'small' layout while keeping the default one at 2.7". I can change my small layout to any size I want but that really makes no sense at all!
Any help is appreciated. Project CLEAN and restarting Eclipse I already tried.
I also had your problem for managing different screen sizes. The one that I use most frequently is to reorganize my layout folders in the same order as drawables. By this I mean that I create these folders for layout :
layout-ldpi
layout-mdpi
layout-hdpi
layout-xhdpi
If you open a layout file from the "layout-hdpi" folder , the default device for displaying the preview will be an hdpi one , like "4.0 480*800 hdpi".
Also. I found it much more time-consuming when adapting to different screens.
Another workaround that I'm really in favor of, is using the Intellij Community Edition for android development and user interface design. Intellij is a very stable and robust IDE based on gradle and is much much smoother than the buggy Eclipse.
If you are still having layout issues then I suggest reading this:
http://developer.android.com/guide/practices/screens_support.html
As of API level 13 layout-small/normal/large have been deprecated and you should be using sw<>dp qualifiers.
I have an app that has multiple layouts and my standard layout file is for screens that have the smallest available width like so:
layout (smallest screens)
layout-sw480dp (screens that are slightly larger)
layout-sw600dp (7" tablets)
layout-sw720dp (10" tablets)
Is there any 0.00001% chance that android device screen size does not match with any of four generalized screen sizes?
If yes, from where will it pick the layout resources, if I don't have defined them in default layout folder?
Note I have default layout folder res/layout/ but don't have all the screens defined in this folder rather defined them in corresponding layout-'screen size' folder.
Is there any 0.00001% chance that android device screen size does not match with any of four generalized screen sizes?
All devices that legitimately have the Android Market on them will be in one of the four size buckets, or possibly in new buckets defined as part of future versions of Android.
However, there are devices (e.g., WIMM One wearable) that run Android and do not have the Android Market on them. Such devices could, in theory, do something unusual.
If yes, from where will it pick the layout resources, if I don't have defined them in default layout folder?
You would have to ask the device manufacturer.
I have default layout folder res/layout/ but don't have all the screens defined in this folder rather defined them in corresponding layout-'screen size' folder.
Generally speaking, it is best to have one of everything in res/layout, then override them with tailored layouts only where needed (e.g., in res/layout-large-land/). If nothing else, this minimizes code duplication.
I have to design an application which to support under three resolution. for that i use the code in manifest
and also create three folder layout , layout-large, layout-small for supporting three resolution, correspondingly i put the different resolution of image in drawable-hdpi ,drawable-ldpi ,drawable-mdpi , but whenever i run the app in different resolution it going to take low resolution image instead of different resolution i use.
I don`t know where i made the mistake, whether i have to add some code in layout xml or not. I also search the android developer forum and i do the application design as they insist.
Any one suggest some idea to achieve this.Thanks
There are two things you could check: have you set the minimum SDK version of your app to use version 4 (Android 1.6) support for this started?
Secondly, the layout-large and layout-small folders are designed for different sized screens (think tablet vs phone), and not resolution. If you're changing the resolution (DPI) of the device, you'll need to use layout-hdpi, layout-ldpi etc.
Further, if it's only the images you're changing, you should be placing the different images in drawable-hdpi, drawable-ldpi etc, and not layout-xxxx. If on a supported device, Android will pick the image from the correct folder, so you'll only have one layout folder (or 2 if you use layout-land)
Some (or all :S) of these points are covered in this link, to another question on StackOverflow. Try to use the search function before asking a question. Also, you'll find people are more receptive to providing answers to users with higher accept percentages.
Android - layout-large folder is been ignored
Edit: for multiple screen support, also look at Fragments to better organise and fit your content for both large and small screen devices (dev.Android, worked example)
I have an Android app that I would like to display high quality images with. However there are many different screen sizes and ratios. I know there are filters to show apps in Market only for devices with small/medium/large screens.
If I put images of both sizes in 1 app it will double the size of the app, right?
Is it a good practice to make multiple versions for different screen sizes?
I would like to make 1 app in 3 versions for such devices:
medium screen mdpi
medium screen hdpi + large screen mdpi
large (tablets)
If it's possible to do it how can I specify them in manifests? Or is it somewhere in market?
Android has a built-in mechanism for having resources designed for different screen sizes and pixel densities. It's called resource directory qualifiers, and you can read all about it here.
For example, for small screen sizes, you could create a specific layout file and place it in the res/layout-small directory. For a larger screen, you could create a layout file with the same name and place it in the res/layout-large (or res/layout-xlarge) directory.
For pixel density, you could create a small version of your image resources and place them in the res/drawable-ldpi directory (lower pixel densities). And for higher pixel densities, you could create alternate versions and place them in the res/drawable-hdpi directory.
I'd encourage you to read the page on Supporting Multiple Screens, and let Android help you out with its built-in mechanisms. Creating three separate copies of your app is harder for you to maintain, and it confuses potential users (most of whom probably neither know nor care about "pixel densities"). What's to stop them from downloading the wrong version of your app, and getting a lousy experience because of it?
No one seems to be addressing the file size issue you're really asking about, so I'll try.
You should package your high quality images as a set of separate downloads, one for each type of device you plan to support. This makes your base app small, and ensures the end user's disk space is only filled by images it needs.
I've not done this myself, but hopefully the idea will send you on the right search path. I imagine you design the separate download as either resources on your own server, or another set of apps in the market (i.e. "MyApp Image Pack HDPI", "... MDPI", etc.).
As Donut mentions above android has excellent documentation for this here, here, here and here.
Note that all Manifest file changes and how to create one binary that will support different screen sizes, different densities AND different SDK's are at android website. But it requires careful planning and testing to do so.
The best way is to have ALL device configurations (listed here, including the Samsung Galaxy Tab simulater (large screen, hdpi) available here) in your development environment and test your app on them.
You have to create different .apk for each version and define this in your application's manifest file.use this link
http://developer.android.com/guide/practices/screens-distribution.html