There are quite some pit falls that an application developer may hit. In order to simplify life Sony Ericsson Developer world has produced a little guideline called "Android Application Coding Guidelines - Power Save".
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Has anyone else noticed the battery charge does not seem to last well? I have the wifi turned off and only enable it when required but just general usage seems to sap the power quite quickly. At the moment I'm not sure a full charge would even last a day! Are there any smart apps out there to help manage this? Do widgets relly use that much power? The Android OS itself seems to use an alarming amount of power as does everything else!
View 49 Replies View Relateddoes SQLite have any big impact on power consumption? I am just thinking about storing data in a List or Map or in a database. I have a lot of inserts and queries, several a second.
View 3 Replies View RelatedI'm the developer of PowerTutor, a power profiling tool for the system. This tool profiles the system power consumption and decomposes power consumption on hardware components (e.g. LCD, Wi-Fi, CPU and etc.). It also assigns power consumption to individual application as the application is running alone in the system. In this way, it could potentially help developers to profile the app and detect energy inefficiency usage behavior in the application.
More details could be found at http://powertutor.org.
Note that PowerTutor is free to download and no advertisement is embedded. I'm posting this here to so that the Android community can be aware of it. Any one who cares about power consumption of their applications will find it useful.
find out which app is draining my battery and if it's really necessary. couldn't find any information on the SDK pages.My Phone seems to be very often Awake while in standby. I can't understand why it has to wake up that often. Am I right, that this "Awake" means, that the cpu is running (not in sleep mode)?
Is there any way to log which software is waking the device up?
phone: HTC Desire HD
settings:
accelerator: off
animation: off
brightness: zero
screen timeout: 15 seconds
notification: off
wallpaper: black / non-live
however battery use screen shows display 73%..! Is that normal, how can I reduce it?
I often have notifications telling me my phone is using more power than my charger/external battery pack is able to provide.could it be my phones battery ?
View 10 Replies View RelatedI want to develop a peripheral device to connect to an android phone via USB OTG. The OTG specs [1] says: "A Targeted Host shall provide sufficient power to each peripheral on its TPL in at least one supported configuration".
Where do I find those TPL ("Targeted Peripheral List") lists? I searched at Sony Ericsson (because I have a Xperia Mini) and Samsung (as a different manufacturer) but with no luck. Is this an android related list?
On github I found a code fragement [2] from DooMLoRD. It mentions a OTG whitelist. But it seems to be something like a skeleton.
I do this research because I want to use the peripheral device in high power mode with about 300 mA. I thought I could compare the TPL with devices that also need 300 mA.
[URL] .....
What is the best android software for showing power consumption by process over time?
View 2 Replies View Relatedseems like anything using 3g drains my battery. slacker player saps 30% of a 2600mah battery in a single hour. If I were to be conservative, it would be 25% of a 2200mah, accounting for other parts of the phone and possibly a low quality battery. Even then, that's horrible. It didn't used to be this bad. And now I suspect it's a combination of a new radio update that boosts signal by consuming more power, and the fact that 3g coverage is weak where I'm at (though it worked good enough before the update). So if there's any way to downgrade radio without losing froyo or other phone functionality, or directly influence power consumption of the 3g radio, please let me know.
View 12 Replies View RelatedI'm looking for a new music player app with low power consumption because Google music is eating up my battery quickly.
View 9 Replies View RelatedI was using the Google navigation on 3G network with the phone connected to a 500mA car charger. After 1hr, the battery dropped 20%. Anyone knows if a 1000mA car if enough?? Tonight, I was watching a Youtube HD video on 4G network (2/3 bars on 4G) with the phone connected to a 1000mA USB wall charger. After 10min, the battery dropped 2%...Well, even 1000mA cannot compensate the consumption of the battery. The power consumption of this phone is ridiculous. Something must be wrong with the system/circuit design.
View 2 Replies View RelatedHow can reduce the power usage in my application.
View 1 Replies View RelatedMy question is basically "can anyone recommend an application that will tell me which applications are draining my battery". I've read about task killers and usage and turning stuff on and off, I'm not worried about that, and I don't need to know why (i.e Google Earth uses X units per hour.
View 11 Replies View RelatedI like the new Facebook app. However, it is currently consuming 12.76 MB (this is the data amount) of valuable space on my G1. Unlike many other apps, there is not a Clear Data or Clear Cache button available to recover this space. Anyone else experiencing this? I have deleted apps I seldom use and find it increasingly difficult to keep my G1 from slowing down due to free space 20 MB and lower. I am thinking of deleting the app and reinstalling.
View 6 Replies View RelatedHas anyone had any luck with aftermarket power supply's. I'd like a car/ac charger or a stand alone power pack. I usually use my DEXIM. but it does not work with the Behold 2. I've tried a car charger/battery unit by Wireless Gear that said it was compatible with all Samsung phones, it came with 5 power tips and a USB outlet that still would not work, even using the OEM USB cable. Any suggestions would be appreciated. I will go with OEM Samsung if necessary, but there selection is limited.
View 4 Replies View RelatedI have a rooted Galaxy S3 with Android 4.1.2, and for some strange reason they've changed the screenshot combination away from the Power+VolDown that other Androids use to Power+Home which can't realistically be pressed one-handed. How can I change it back to Power+VolDown?
View 6 Replies View RelatedHow can one track memory consumption in Android? The Android "Heap" view in Eclipse and java.lang.Runtime methods seem failing for my purpose. I tried to figure out how much memory my app consumes in order to make decisions for future directions. Most of the memory goes into Bitmap objects. Just to test memory consumption I created huge bitmaps in a Loop and logged the java.lang.Runtime memory values: created bitmap (610k free, 2371k total, 16384k max) created bitmap (615k free, 2371k total, 16384k max) created bitmap (615k free, 2371k total, 16384k max) created bitmap (615k free, 2371k total, 16384k max)
Nothing seems to hapen, but on the fifth Bitmap: java.lang.OutOfMemoryError: bitmap size exceeds VM budget at android.graphics.Bitmap.nativeCreate(Native Method) at android.graphics.Bitmap.createBitmap(Bitmap.java:343) at de.greenrobot.colorball.GameView.init(GameView.java:86)
This seems confusing at first. Is java.lang.Runtime the right place to check application memory stats in Android at all? Are Bitmaps allocated outside the app's heap? How can I track it?
Just wondering How the FM Radio in desire works. Is it like in other phones where you have to use the headset for the radio to work? And another question to those that might have tried, how long would the battery last when using FM radio?
View 5 Replies View RelatedWhat actually does that mean when you see android system in the battery consumption breakdown page? Like what parts of the phone use comprises android system, like does looking for a signal comprise system and suck like? And what is considered high android system use?
View 3 Replies View RelatedMany 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 am building and designing a (mostly) read-only interface to some data. I'll be uing ASP.NET MVC to build a psudo-restful API. I'm wondering if anyone can provide some resources for building full-client applications for various mobile platforms, iPhone, Android, Blackberry, Windows Mobile, etc. I'm thinking that serving up XML data is going to be the most simple and universal, but parsing XML in objective-C for example doesn't sound like fun to me, but maybe there are some good libaries out there to help ease this task?
In other words, what formt will be the quickest to implement on the client side? Are there any JSON parsrs for iPhone or Android? I know there are .NET JSON parsers, but not sure about other platforms -- is ther another format that might better? Or should I stick with pure XML and deal with it on each platform differently?
I would like to check the memory consumption of each running processes individually, cat /proc//statmis ok, but opening a shell for each check is time consuming, and maybe not the best way. any advices how to do it with the SDK?
View 1 Replies View Relatedmy phone is karbon A9+ and i wiped the cash,system and data and after that flashed a Custom ROM ! but now the phone just power on in download mode!! how to power on, for recovery or normal power on ! the phone just have the black screen with "Entry QPTS Downloading" Text..i will back to India 5 month later ! can it be fixed or i have to wait for 5 month to come back and send it to service !
View 1 Replies View RelatedI've managed to get my allocations down to next to nothing using DDMS (great tool), this has drastically reduced my GCs to about 1 or 2 every 3 minutes. Still, I'm not happy because those usually cause a noticeable delay in the game (on some phones) when you interact with it.
Using DDMS, I know what the allocations are, they are Strings being converted from integers used to display game information to the HUD.
I'm basically doing this:
CODE:.................
This happens once each frame update and the HUD system is modular so I plug things in when I need and this can cause 4 or 5 hud elements to allocate Strings and AbstractStringBuilders in DDMS.
Any way to reduce these further or eliminate all the String allocations and just reuse a String object?
In the Android phone, while I am watching YouTube videos, I may reduce the audio volume. Once I am done watching, I close all applications and leave the phone. Then when there is a incoming call, the ringer is very feeble. I may miss that call.Can you make the volume adjustment apply only for that application? I don't want the ringer volume get changed.
View 11 Replies View RelatedI want to reduce the boot up time of android.I have tried removing some stuff such as not required .apk from the / system/apps folder.from init.rc file some services which is not required.my kernel uncompressing is taking 11 sec almost.how can reduce that.one thing is that i can remove the drivers which are not needed but i am not finding any .config file to remove it?From where can i remove the not required driver from kernel code?What all other stuff can i remove to reduce boot up time?
View 2 Replies View Relatedin my application i have to read xml from web-service, it is working fine, but major problem is it is taking more time to parse data, though same data is taking less time on iPhone and Blackberry. i have similar code on blackberry it is taking less time to parse. is any fast parsing process in Android? if any body know kindly reply me.
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