Android :: Layout For Multiple Screens / Emulators With Same Resolution But Different Density
Nov 11, 2010
I am trying to develop an application for which I want multiple screen support. I have read the Android article on Best practices for Multiple Screen Support. As per the article we have to follow 3 important things
1. Mention support for different screen sizes(large, medium and small) and any density in AndroidManifest.xml.
2. Place images of 3 dpi's (120, 160, 240) in 3 folders res/ldpi, res/mdpi and res/hdpi.
3. In layout's the dimension should be mentioned in "dip" units. Then Android will take care of the scaling on its own.
I have implemented all these points in my project. The images are picked up correctly from the appropriate folders. But the arrangements of the controls in not same.
e.g. I ran the app on three emulators
1. Resolution 240*320 dpi 120.
2. Resolution 240*320 dpi 160.
3. Resolution 240*320 dpi 240.
(All the emulator have same resolution but different density.)
The problem is the position of the controls is not same on all the three emulator. As per my understanding if the android:layout_marginLeft and android:layout_marginTop are mentioned in "dip" then this problem should not occur. As the density of the emulator increases the controls get placed more towards the right. Is it absolutely necessary that I provide layouts for all combination's of screen dimension and density even if the layout is same for all the devices?
Images:
https://docs.google.com/leaf?id=0By3GYC3k5AMDNzUwNjkwMWEtOGQzZC00MjQ0LWE2OTgtYjFhYzZmM2ExOGVl&hl=en&authkey=CLOEsZsI
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Aug 19, 2010
My application will have two layouts, one for large screens and one for normal. For testing I'm working with one phone (800x480 240dpi) and one tablet (1024x600 240dpi) but both are detected as large screen hdpi and long aspect ratio, so I'm not able to assign different layouts.
The only approach I think that can work is to create layout-large and layout-normal, get the resolution and programmatically set the layout folder. Is that possible?
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Nov 24, 2010
I have used absolute layout in order to display image buttons in my application's main.xml.
how exactly it affects to using my app on different density screens..
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Nov 27, 2013
What is the resolution for different density? Does it really matter or always keep 72 as a resolution?
When placing multiple assets do i need to use fill parent always or i can manually make a measurements for different layout?
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Jan 25, 2010
We can set the pixel values in custom views by multiplying them with
this.getResources().getDisplayMetrics().density;
This is ok when the screen aspect ratio is normal means not long
But how can we set the pixels along Y-axis when the aspect ration is long.
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May 14, 2010
Can you please tell me how can I specify dimension of layout for different density of screen?
i.e. the layout are the same across different densities, but some dimension are different.
how can I do that?
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Aug 19, 2013
I am facing problem in running application with HIGH & LOW density with single layout(xml file). I have read so many threads and verified developers.android site too..
All mentioned to specify the size of the components should be in dp or wrap_content or fill_content, then android itself take care of the density use,since android is density independent.
And also to place the layouts in layout-nodpi folder for density free. Then in one of the thread, they mentioned to use
<supports-screens android:resizeable="true"
android:largeScreens="true" android:normalScreens="true"
android:anyDensity="true"></supports-screens>.
I also tried by placing the layouts in ldpi,mdpi,xhdpi and hdpi.But no use.
I have tried all the above,but i couldnt get the application UI same in two different density.. I am using "Funbook micromax"[Normal density] and "Intex iBuddy"[Low density] model, both are 7 Inch.
use single layout to be work in all type of density and screen size..
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Nov 19, 2009
I would like to simulate a small cluster of Android devices either on one laptop (worst-case), or on several machines on a private network. This is for testing communications and process migration on Android.
Is there a safe way to identify and launch a particular emulator from a given application under Eclipse? I have a recent Eclipse/Java/ADT setup and I'm using the a variety of tutorials from Mark Murphy, Meier, and Abelson.
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Nov 15, 2010
I read the official document about supporting multiple screens http://developer.android.com/guide/practices/screens_support.html
According to that document, I should just create different directories for different resolultion.
Now the question. How to support devices with normal screen and high density or low density?
I ask it because, there are two posibilities (WVGA800 (480x800) and WVGA854 (480x854)) and (WQVGA400 (240x400) and WQVGA432 (240x432)) and I don't know where to store some background images for them.
I would take drawable-normal-hdpi or drawable-normal-ldpi, but how to make difference between 480x800 and 480x854 or between 240x400 and 240x432?!
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Apr 14, 2010
I'm confused regarding the densities. I see that with medium density, the screen resolution could be either 320x480, 480x800, or 480x854. So if I have an image thats 300px wide in the mdpi folder, how is it going to look the same size on all 3 different screen sizes (mainly 320x480 vs the other 2)? And by look the same size, I mean scale to be bigger or smaller depending upon the screen size.
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Jan 13, 2010
I am writing layout file for Droid Milestone. I set the directory to layout-854x480, but it doesn't work at all.
I then use:
CODE:............
To print the screen size and then get 569x320. I then change the layout directory name to layout-569x320. Then the layout file works. I have a G2 and know it's 480x320. And I see the MS screen contain more pixel in wide direction. I am using SDK 1.6, eclipse+adt
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Mar 5, 2009
I am working on a screen that needs to look fine at HVGA-L resolution as well as 640x480 resolution. Lets say I have a button that is 200 pixels wide and 50 pixels high on HVGA-L skin. When the same layout xml is shown at 640x480 skin, I want my button size increase proportionately. The hardware the app runs on supports both the resolutions.
None of the units that the android framework provides seems to have this facility. If I use px, then the button size will stay same. dip doesn't matter because it is the same hardware. sp is meant for fonts, not for button width/heights.
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Apr 15, 2010
In my android application, I would like to support multiple screens. So I have my layout xml files in res/layout (the layout are the same across different screen resolution). And I place my high-resolution asserts in res/drawable-hdpi
In my layout xml, I have
CODE:...........
And I have put bkg.png in res/drawable-hdpi
And I have started my emulator with WVGA-800 as avd. But my application crashes:
CODE:................
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Aug 7, 2010
I am having an issue understanding how to get Bitmaps from resources in density specific directories to scale properly when drawing them to a Surface View.If I have a resource in folder "drawable" I expect it to be scaled up when run on hdpi screens and scaled down on ldpi screens and left as is on mdpi or 1.5 screens.Likewise I expect anything found in hdpi when run on an hdpi screen to remain unscaled. However, there is some combination of settings that I am not getting right to do this seemingly simple thing.I am not running compatibility mode so my manifest supports all screen sizes with anydensity=true.I do not understand the BitmapFactory.Options fields of inScaled, inTargetDensity, and inDensity that I am thinking have to be set appropriately and slightly different for each resource decoded depending on which directory they were found in and what screen they are currently run on.
All I have been able to find is that if either inTargetDensity and inDensity are 0, no scaling occurs, but if not, scaling occurs such that inDensity matches inTargetDensity. Is this correct?I have no idea what valid settings are for these fields from the documentation other than ints.What are the integer values for LDPI, MDPI, and HDPI? And how do I determine the density of a resource in order to set this before I decode it? Am I way off base in my approach for drawing bitmaps from various resource directories on various screen sizes?
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Dec 3, 2009
I am getting my feet wet developing software for the Android. My test app will have multiple screens (each having their own layout file). The main screen will direct the user to view the other screens based on user input. I kinda see this as layers of cake. Bottom layer being main; then you add and remove layers as the user makes UI inputs. The crazy trouble is how to view a second layer. I have created a second class which has its own onCreate method, which has its on setContentView(R.layout.secondlayer).
This class extends Activity much like my primary class does. I have a click event on a button within the main layout. This button will instantiate the new second layer class which I have done. And that is where my story endsI don't know what to do from this point. This is surely a newbie question If someone has an example that would be extremely helpful teach me to fish and I will be on my way.
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Apr 10, 2010
I know that iphone users can jail break to get the old school emulators and I think that by now, there are some emulators in the apple market. My question is on a couple levels...
- Without jailbreaking, can you get roms on the iphone for free?
- If so how?
- How well does the on screen controller work
- Is the small screen you have to use on the iphone emu an issue?
Also add any feedback you like and your opinion as well. I'm just curious that's all. Hopefully one of you has experience in this field
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Jun 11, 2010
In the Supporting Multiple Screens document in the Android Dev Guide, some example screen configurations are given. One of them states that the small-ldpi designation is given to QVGA (240x320) screens with a physical size of 2.6"-3.0". According to this DPI calculator, a 2.8" QVGA display equates to 143 dpi. However, further down the page the document explicitly states that all screens over 140 dpi are considered "medium" density.
So which is it, ldpi or mdpi? Is this a mistake? Does anyone know what the HTC Tattoo or similar device actually reports? I don't have access to any devices like this.
Also, with the recent publishing of this document, I'm glad to see we finally have an explicit statement of the exact DPI ranges of the three density categories. But why haven't we been given the same for the small, medium, and large screen size categories? I'd like to know the exact ranges for all these.
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Oct 9, 2009
I am working on an application where I wish to have multiple screens (each of full display size) attached to each other horizontally, and switch between them by using the finger (swipe right / swipe left). The home screen does exactly what I want, but its implementation seems to be more complex than I thought. What would be your preferred way to achieve this functionality? Is there any Layout or View that I could reuse? More generally, it should work with the 1.5 SDK, so the gesture interface is not available.
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Oct 29, 2010
Could it be possible to make each screen have a different wallpaper while scrolling? I mean, taking as an example a case with three screens, it will be necessary to set a x3 screen width wallpaper to fit 1/3 on each screen, or directly setting different images for each screen. so the scrolling make it visually a different wallpaper on each screen rather than sliding the wallpaper a 50% each side.
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Aug 15, 2010
I am working on an Android project where a group of buttons needs to show on the bottom of every screen (activity) in the application. The group of buttons are basically a navigation bar. I want to know the best way to do this without creating new buttons for every activity. I have been around programming (C++/C#) for many years but am pretty new to Android and Java so if someone can point me in a general direction.
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Sep 27, 2010
As per managing resources(images) in > Android 1.6 version, we need to keep different-resolutions image in Drawable-Hdpi, Drawable-Mdpi, Drawable-Lpi folder particularly.
And as per this page: http://developer.android.com/guide/practices/screens_support.html ,
In Low density section - there are three resolutions used: 240*320 , 240x400 , 240x432 for the Small screen, Normal Screen, Large Screen particularly.
same way for Medium density section - there are three resolutions used: 320x480 , 480x800 , 480x854 for the Small screen, Normal Screen, Large Screen particularly. and same way for High density ........
But i am confused here:
(1) How do i come to know that whether small, Normal or Large screen is used, i mean is there any way to know ?
(2) How do i come to know which type of density i am using ?
(3) And in Drawable-Hdpi, Drawable-Mdpi, Drawable-ldpi folder, which resolution's image we should keep particularly?
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Jun 9, 2010
I have read the topic about supporting multiple screen size as well as different DPI. I am wondering which of the following way is better in supporting multiple screens:
1. Have different layout for different screen size (stretch the images)
2. Have different set of graphics for different screen (use the same layout)
3. Have different set of graphics and different set of layout for each of the screen
Which way is the easiest? And which way is the most optical way to design? Or is there another better way?
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Jul 25, 2010
I've read the article "Supporting Multiple Screen" on Android developers site. But that doesn't apply to game logic.Let me get straight to the point. My situation is as follows:
- I'm creating a game using LunarLander code as a base.
- In my game, there'll be an object flying up from the bottom of the screen. The object will fly in projectile motion.
- I set the starting velocity, gravity and angle so that the highest point(of projectile motion) is almost at the top of the screen.
- The screen tested is Motorola Milestone. (480x854 resolution) Meaning the object travels around 854 pixels vertically.
I'm thinking of adjusting starting velocity based on screensizes. But that sounds unreliable when we've so many devices/resolutions out there. How do you combat these kind of problem when making games?
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Aug 6, 2010
Can anyone here let me know if there is a way to have a backup where it keeps the layout of your screens, i have backup pro, and titanium, but neither will set the screens up for me, or am i missing something here?
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Jan 2, 2013
Which layout to choose to cover as many screens as possible?
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Sep 2, 2010
I am very new to android,i developed an sample web application and hosted it apk build file in different android version and on different sized devices,here i am getting problem in my design of layout such as listview not being displayed properly bottom portion is not displayed well and the align is not so good.
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Oct 18, 2010
I have developed an application which en-composes list views and posted that .apk file in my htc device, the design and alignment everything works fine,but the problem When i am testing in various devices such as Morotolo Droid,Nexus Devices the alignment of Listviews goes wrong, so i planned to use the Layout folder as layout-hdpi,layout-ldpi, and layout-mdpi, for that i changed my manifest file as
<supports-screens android:largeScreens="true"
android:normalScreens="true" android:smallScreens="true"
android:anyDensity="true" />
Is it right putting android:anyDensity="true",also i used dp instead of dip. I went through this url, but still am not able to get a clear idea in this
http://developer.android.com/guide/practices/screens_support.html. so friends pls tell me(help me) to get clear idea in this and tell what mistakes i have doing. This is my main page xml code frnds.
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost" android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/background_retinav2">
<LinearLayout android:layout_gravity="center" android:foregroundGravity="bottom" android:background="@color/white" android:id="@+id/rl_1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal">
<ImageView android:paddingTop="3dp" android:id="@+id/starthideimage" android:layout_width="30dp" android:layout_height="35dp" android:src="@drawable/newback" />
<HorizontalScrollView android:paddingTop="8dp" android:id="@+id/gv"
android:layout_width="wrap_content" android:layout_marginTop="0dp"
android:layout_height="wrap_content" android:background="#ffffff"
android:scrollbars="none" android:layout_weight="1" android:foregroundGravity="bottom">
<LinearLayout android:id="@+id/san_tag" android:layout_width="wrap_content" android:layout_height="wrap_content">
</LinearLayout>
</HorizontalScrollView>
<ImageView android:paddingTop="3dp" android:id="@+id/Endhideimage" android:layout_width="30dp" android:layout_height="35dp" android:src="@drawable/newforward" />
</LinearLayout>
android:id="@android:id/tabs"
android:gravity="bottom"
android:layout_gravity="bottom"
android:listSelector="@color/gray"
android:layout_width="fill_parent"
android:layout_height="wrap_content" /> </TabHost>
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May 11, 2010
Is there a way to move multiple apps between screens?
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Jun 12, 2014
I have the galaxy S5 running 4.2.2
I hate having the phone wake up in my pocket after unlocking with either fingerprint or pin.
The phone is set to lock after 5 minutes of inactivity - but if bumped in the pocket, the phone wakes up without the swipe lock screen.
Is it possible to use a combination of two lock screen types?
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Jul 12, 2010
I am new to android. For getting more number of downloads. I will make application in Android 1.5 version. How can I support multiple screen resolution from android 1.5 version. Is there any problem develop application in Android 1.5 and release in market. Is it visible to higher version mobile market for downloading apk file.
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