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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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..
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
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?!
I have a screen where you can enable/disable modules for my Android application.
For this I use a CheckboxPreference screen. This is all good, but the summary field gets cut off if longer descriptions are added than 2 lines.
Suppose I have 4-5 lines of description available for each module, I would like to display this in a helper window.
I tried to bind a click event to the CheckboxPreference, but that fires for the whole line, so not only when the checkbox is clicked, and more, wherever you click on the line the checkbox is toggled.
So now I am wondering if this can be fixed. So if the user needs more info, just taps the text and the helper opens up, and if want to toggle the settings it taps the checkbox.
So oddly enough my wife's Eris does not let her long press ANY of the bottom two rows of app icons/widgets. I can long press any of the top two rows apps/widgets fine to remove or add in an empty space. but the bottom two rows I can't remove or add with a long press.anyone else have this issue? I'm trying to figure out whats new but she isn't that into her phone so she never installs stuff on it, im the one tweaking and playing with her phone and I haven't touched it in a week this started happening randomly 2 days ago.
View 10 Replies View RelatedOver the past couple of months, the home screens on my Hero has sudden gone completely blank (i.e. all widgets disappeared!).
Have anyone else experienced this?
How do you change the setting for how long an email can stay on your phone? Also, how can you set it, so you can delete the email from your phone, but keep it on the server.
View 8 Replies View RelatedIn android, I defined an ImageView's layoutWidth to be 'fill_parent' (which takes up the full width of the phone). My question is if the Image i put to ImageView is bigger than the layoutWidth, android will scale it, right? But what about the height? when android scale it, will it keeps the aspect ratio? What I find out is, there is some 'white space' at the top/bottom of the ImageView when android scales an image which is bigger than the ImageView. Is that true? If yes, how can I eliminate that white spaces?
View 3 Replies View RelatedWhat would be the best way to implement Aspect-oriented programming (AOP) in an Android application?
Would it be efficient with the mobile battery?
I have started using 3CX DroidDesktop to manage my Android phone from a web browser on my computer.
This software supports remote control of the android phone (provided that the phone is rooted, which mine is), however whenever I attempt a remote control session I see the following screen -
I have searched the internet, and this issues seems to be quite common. However there did not appear to be any available solutions. How to get the remote control aspect of this excellent software working.
I want to use my MK802 IIIS with a projector but I am having aspect ratio/resolution issues. Namely my projector supports 800x600 and 1024x768 but on my Android stick I get chose 1920x1080, 1280x720 or 720x480 (Settings->Display->HDMI modes). The stick has only HDMI output and I am using a cheap chinese adapter to connect it to the projectors vga input. For example with 720x480 I do get the picture but at left side a slice of it is cut off.
Ideal would be if I could set the video output to 1024x768 (with 4:3 aspect ratio).So, how could I change it?
Is there any Xorg like solution, that is, add resolutions by editing some conf file?I should create a custom ROM, build custom firmware...
I'm wondering if anyone has figured out yet what the best resolution and/or aspect ratio is for custom contact photos? Most of my contact photos come from Facebook, but some I will edit on my PC and load onto the phone's SD card. I know there are issues with decent photos becoming low-res pixelated, so I'm wondering if I start with the best size and/or aspect ratio, maybe the phone won't have to resample the photos itself.
View 14 Replies View RelatedI have an Allwinner A20 tv box, I trying to use it on a device with an old, low res, 4:3, 5" screen. It works but I have a few problems - firstly the box has "pal" and ntsc" settings for use with AV out, but when connected the picture is squashed inwards so circles are represented as ovals. I ve tried to mod the aspect ratio/resolution but nothing works, the picture is always distorted.
On top of that everything is too small for the screen, it is readable but things really need to appear bigger, so I also played about with the dpi, this does make things bigger and a better match for the screen, even though the device doesnt actually have a screen itself.
I ve done both these mods with several apps and modding the build prop and I always get "sorry systemGUI has stopped", constantly - when you close it, it opens again straight away. Clearly settings doesnt like these mods, so I m trying to work what I need to change so it DOES accept them.
How I can successfully mod the setting.db and get this working at the correct aspect ratio and a dpi that is suitable for use on a low res screen ?
I had a little time with the captivate today and noticed it has 4(i think) horizontal scrolling screens for apps. What happens when you fill those? Does it automatically add another one or what?
View 2 Replies View RelatedI'm wondering if it is possible to inflate a layout using a different density value than the default system density. I have a high density layout, which looks good on the Galaxy Tab (1024x600px, hdpi) and I like to use the same layout on another tablet with the same pixel resolution but medium density. The mdpi layout which is used works on the device but the screen just looks really empty and I would prefer to scale things up. So is there a xml argument for scaling the layout, maybe something similar to Bitmap.Options.targetDensity. Or could this be done with a new LayoutInflater class?
View 6 Replies View RelatedIs it possible to force Android to use a given LCD density value? For example, if the app is running on a WVGA phone that reports LCD density of 160DPI *and* screen size of 3.7inch, one of those two values must be wrong. Is it possible to tell Android to ignore the 160DPI value and use 240DPI instead (for my Activity only)?
View 2 Replies View RelatedHow to get the screen density programmatically in android?
I mean How to find the screen dpi of the current device?
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?
I'm getting ready to release my first application the marketplace. It's being written for devices running Android 1.5 and above, however there aren't any specific folders for the three different screen densities (I think those came around in 1.6). Should I make these folders myself? Where should I put image resources for the different densities and what should I put in my Manifest?
View 2 Replies View RelatedI'm being confused by the 'screen density' concept in Android. I knwe that dpi (dot per inch) came from the printing device. 160 dpi means 160 dots in every inch on the paper. However, when dpi is used for the screen density, for example, what's mentioned '160 dpi screen' in Android document, what's the meaning? 160 pixels on every inch of the display?
As described in http://code.google.com/intl/zh-CN/android/reference/available-resourc..., 1 dip (density-independent pixel) means 1 pixel on a 160 dpi screen. Why does the ratio of dp-to-pixel not necessarily change with the screen density in direct proportion?
When the dpi is changed from 160 to 80, how many pixels will 1dp will take? 0.5?
I can hardly understand why dip/dp is introduced into Android.
My project contains three drawable's folders: drawable-hdpi, drawable-mdpi and drawable. I build it with android:minSdkVersion="3". When it runs on Andriod 1.6 or higher it always uses images from drawable-mdpi on high density screens.
How to fix this?
I was working with Eclipse some minutes ago and I simply launched the emulator with a couple of AVDs that I created (QVGA, HVGA and WVGA screens). I've been doing thta for months, in order to check that every time I change something, the app looks fine for each type of phone.
The problem is that suddenly, the emulator in QVGA and WVGA start with huge icons on the desktop. They even overlap and the home of Android is corrupted. And when I run any application to test the emulator, the screen only shows a portion of the main View. It's like everything was zoomed in. I'm blocked because I can't use anymore the emulator. I'm going to remove completely Eclipse and re-install it, but I don't know if it will be enough.
in xml file we can define measuring units along with the values. If I want to set some property through code it only takes "int" value. What is the default unit for this int? px(pixels) or dp(density independent pixels) ?
View 7 Replies View RelatedI have created the launcher icon(48x48 px) for 320x480 screen resolution and it's working fine. but while using same icon in WVGA854(480x854 px) it's displaying small compare to other default launcher icon. i want to know, what is the size of High Density WVGA854 launcher icon?
View 1 Replies View RelatedLCD Density Changer for Android, LCD Density Changer Application v3.0 Released | xda-developers Dev Thread [APP] LCD Density Changer 3.0 - create HighRes screen effect - xda-developers I set my EVO to 200. made things way way better! Some text on the MENU in LauncherPro are cut off, but nothing i cant deal with.
View 49 Replies View RelatedI'm running cm6 and the Galaxy S Theme. I would like to run my density at 160 because I really love how tiny the icons look on my screen. However, when I run the density to that setting my notification menu bar no longer stretches across the top of the screen, it appears as a small square in the left hand corner. I also have the same problem in the market place, where the grey background should stretch across behind where it says "market". My friend runs his at 160 and has no problems like this, however he is not running cm6 or the theme I am. So, while it doesn't really narrow it down any, I'm sure the problem is in one of the two, more likely the theme in my mind. Any idea's how I can fix or repair this problem?
View 9 Replies View RelatedI have an image put on an ImageButton, which looks good on a mdpi (medium-dpi) screen. However, when the device has a hdpi (high-dpi) screen, the image is still pixel-by-pixel accurate, which look small on the device screen.How do I make such that the image (and therefore the ImageButton) scaled based on the density-independent pixels (dp or dip) instead of pixels?
View 3 Replies View RelatedHas everyone seen that you can change the LCD density on the Desire? (Well, on all Android handsets really). It simulates a higher resolution, fits more text on screen etc. There's an app on the market which does it, although it won't work on the Desire unless you're S-OFF. All you need to do is extract the build.prop file from /system to your PC (in recovery, use ADB PULL), and using a text editor change the value of LCD Density from original 240 to 200, then ADB push it back and reboot. I'm *really* pleased with the result. Combined with Launcher Pro I've a whole new feel to my phone...
View 8 Replies View RelatedI have a problem with my sgy s5360 (rooted). i recently changed my lcd density in error and instead of the 120 default setting, I changed it to 288. that was really frustrating. I haven't been able to fix it myself. I have already done the factory reset but that didn't work. I used the ROM toolbox. Now my sgy is like in a zoomed state. Large fonts, cannot unlock and change to default setting. I cannot click the android icon that can be seen when you reboot your phone and did the factory reset. assistance is badly needed. i have browsed through the theads, but this issue has not been addressed.
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