Android :: Android Debugging Tips
Jul 23, 2010
Often my programs simply crash. I can't see anything in the LogCat or otherwise useful information elsewhere to find out what's gone wrong. The only thing I see is some kind of exception. This is unacceptable and makes Android programming nearly impossible. I'm sure there must be some additional help to debugging, but after weeks of searching, nothing.
Does anyone have hints on how to find a bug in a program that simply crashes?
General question I know, but without an answer, I'm going to have to quit trying to develop apps for Android. I can't spend weeks of searching for every simple mistake.
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Aug 16, 2010
i want to set balloon tips in android google map... please tell me how can we set and display balloon tips ?
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Aug 17, 2010
I am new at using android so new tips and trick would be appreciated.
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Jan 4, 2010
i am starting to develop Android applications and i would like to know if there are any tips for creating lightweight applications. This is my first attempt to write applications on a mobile platform but i hope that my experience in programming will help.I have in mind the "Better, Faster, Lighter Java" book, but will this be "the" answer to my question? Are there any tips specific for the Android Platform that will allow me to build lightweight applications?
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Apr 22, 2010
What are the best practices people have used to integrate help/tips in their application? One way I can think of is having html snippets in resources or assets - perhaps as html files - maybe as formatted strings. However, I think it would break down once an html file linked to another html file or an image or icon. I'm sure some of you have apps that are so wonderfully intuitive that they don't need any help. And I admire that. But I'm not making that assumption for my app.
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Jan 19, 2010
I'm starting down the road of Android Development. At this point I'm looking for some insight from other developers who have been doing 'droid development and have some experience to share with someone who is just starting out. This can be anything from API to AVM to IDE. Any unexpected things come up while building your apps? Any tips for project layout or organization that help facilitate the deployment process to the Android AppStore? Any patterns which specifically helped in a particular situation?Even links to great blogs or sample apps and resources beyond those which you can grab from Google Code
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Apr 21, 2010
So I am enthralled with the voice search - especially for navigating.I say, "navigate to the nearest wal greens" - and it's always right.Does anyone have any other cool voice commands that they use?The word "nearest" would be the cool portion I guess.
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Sep 6, 2010
I'm currently developing a software under android and im getting quite quickly some OutOfMemoryException.... I did modified some part of my code to use more static variables instead of making new allocation with the "new" operator but is there any things else to do ? or any other tips ? Any advices would be welcome.
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Feb 15, 2010
I wanted to go over a few things with everyone. Don't any of you take this the wrong way as I am just writing this to try and help everyone new to the scene.
When I first got into Android I had a G1, that was a little over a year ago. I used it stock for about 2 months and then started going to a site called xda developers. Some of you probably know about it, for those who don't it is a site that focuses on developing and hacking WinMo and Android. I learned a ton of stuff there, but at first it was SCARY, so much information and so many new technical terms I had never heard of before. I took my time reading things and asking people questions for about 2 weeks and when I was finally confident in myself I rooted my G1. It took me like 2+ hours to do it, I installed a new Recovery, flashed a new SPL and Radio, I even got a Sense UI ROM installed on it. It felt great.
Now here we are with a much higher spec'd phone, the Droid, and it has attracted a TON of new users. It is great because now Android is evolving faster then it ever has, and we are getting tons of new developers creating some amazing stuff. It has all happened so fast and a lot of you are trying to learn everything as quickly as possible. The Sholes SMUpdater app has made all of this VERY easy for anyone to do, but the problem with this is that now when something goes wrong you have no idea how to fix it. When you want to do some modifications that involve ADB or Terminal Emulator you have no knowledge on how they work. By skipping all the hard parts you have basically shorted yourself on TONS of knowledge which, to me, is sort of a requirement to rooting/rom flashing.
Now I agree that SMUpdater is a great tool to save time from having to learn everything, and it makes it easy to get the newest Sholes ROM. But there is SOOO much more to Android hacking/development then Sholes. When you want to try something new and different then what will you do? This is why I HIGHLY recommend that everyone does some heavy researching, take a weekend, or some blocks of free time, and read. Read until you can't see straight. Let it all sink in, and practice practice practice. I promise you will become such a better user, you will understand what is going on with the system.
If you don't study and learn, then what happens when something breaks? You can't always expect someone on a forum to come to your rescue. Of course there will always be things that happen which require some really advanced users to fix, and even I have t ask for help from time to time. But to not learn even the basics is just absurd, it hurts you and it hurts the community because we have to spend all our time fixing very basic and simple problems.
I hope no one here took offense to this because I am doing this to really help everyone here out. The more we all know then the more we can do.
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Nov 14, 2010
I'm a .NET developer starting to dig into an android application. One thing that seems a little abstract is working with SqlLite. In a .NET application, I can do my Database setup, query testing and profiling, and enter in some test records through Management Studio for MSSQL. In fact, I'm constantly in Management Studio checking something - so I'm finding it difficult to work without a similar tool.
What are some good tools/tricks to use when developing SQLLite on Android? The tool doesn't have to have a GUI, but would be nice if I could run it as a desktop app and have it look at the same DB as my emulator.
For instance, something that will allow me to run a simple SELECT statement against a table to view records without having to do it through android?
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Feb 14, 2009
I'm looking for tips, tricks and resources on optimizing a website design for Android's browser.
I'm building an Android app and some of the functionality will be accessible through a web interface.
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Aug 28, 2010
I'm soon to be getting my first android phone, htc desire on t-mobile UK (so from what ive heard it will be branded), i will be rooting it and ideally a custom rom. im happy with the rooting process (done quite a bit of modding with consoles), im just at a loss with custom roms for it at the minute, if anyone could suggest one that would suit my needs it would be awesome.
Im after a fairly similar to stock, idealy 2.2, but with some performance tweaks, im after:
-HTC sense
-a2sd
-the ability to overclock (and ideally auto underclock settings when in sleep mode)
- battery performance tweak
and also what is the difference in omoled vs slcd screens when it comes to custom roms and rooting, and also just generally in day to day use? are there any differences in quality, display etc?
and also whats the best os for rooting, roms etc? i mainly use a mac but also have xp, vista, 7 and linux. i understand theres no software currently for mac? and id rather stay away from 7 if at all possible (my copys not that stable) all help would be greatly appreciated, and i hope this is in the right forum
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Mar 1, 2010
I am new to android programming and have a strong keen interest to learn it. I want to write a program that fetches the data from a website, segregates it and displays it on the screen of the phone. The data could be grocery list from a supermarket or sale items in a mall. Could you please suggest as to how I can go ahead and start this.
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Feb 6, 2010
I've taken the time to write down a collection of Android tips and tricks (along with a few tutorials) based on my own experiences and what I've learned in various forums. For those of you who want to check it out, here's the link:Android Tips & Tricks and Tutorials I wonder if anyone know of a trick that isn't listed in the guide? If so, please share it with me My hope is that the collection will grow.One thing I learned today actually is that when you type with the on-screen keyboard on the HTC Hero, instead of hitting then space for a new sentence, you can just double tap on the space bar and it will do a full stop, space, and then capitalize the next letter. It's much smoother.
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Oct 29, 2010
What is your Emulator feature that you could not work without? Which unknown great shortcut, console command or startup option is there that you discovered and you think has to be also known by all other Android devs?
Share your Emulator wisdom with us.
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May 2, 2010
Well after you have swype installed and ready to go here are a few tips to help you get the most out of it:
1. Use the built in tutorial. This tutorial takes 5 minutes to complete but will show you the ins and outs of using its keyboard, its very handy and a must if you intend on using it.
2. If a word you swype in does not come up correctly or offers you choices that are not even close, just click the X and then type it in one letter at a time, using the peck-a-key method. This adds it to the dictionary and the next time you swype it in, it'll work.
3. The built in dictionary is not as complete as you may want it, but over time it will learn how you type/swype and will work better as time goes on. After a week or so it should work with most or all the words you swype in, but give it time. They exclude some words on purpose (cuss words etc) or words that aren't very commonly used to keep the size of the file small so it doesn't take up too much space on your device with words and patterns you don't use.
4. Holding down a button will change the letter to the symbol above the letter. This comes in handy when you need to insert a couple numbers or commonly used symbols and don't want to switch screens. I find its much quicker to just hold a button than switching, hitting the key and then switching back.
5. Holding down the back key will delete full words at a time. That way you don't need to keep hitting the back key repeatedly, this is a time saver if you need to delete a full sentence for example.
6. Pushing shift will change the symbol keyboard to the symbols/characters above the numbers. This just makes it quicker to choose a symbol instead of long pressing the key to achieve the same result.I'll update this post and add more tips as i can think of them or others post them.
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Aug 4, 2010
The worst thing about this virtual keyboard both vertical and landscape is hitting the spacebar. It always is the bottleneck to my typing on it. Any tips?
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Aug 27, 2010
New to the Evo just wanted to know, when i first get it what should i do to get the best out of the batt life? Drain it then charge it, or should i just throw it on charge for some amount of hours first. I have heard different things from people and just wanted some tips.
Also at night when not using the phone should i turn the phone fully off does that help in anyway or is it OK to just have the phone on all the time and never turning it off.
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May 25, 2010
I am in need of some tips tricks and advice on all the exclusive stuff such as applications, Updates, and other miscellaneous stuff like that. Anyone got anything that could help?
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Apr 30, 2010
While using Google Navigation (beta) i've come across some helpful tips that may enhance your experience with it. Google Navigation (beta) is accessable from the Car Panel or via Google Maps. I'll share some of these tips below.Home Screen Navigation/Destination Shortcuts: One of the first things i noticed was the inability to store places you frequently navigate to within the app itself. In order to have a shortcut to the destination of your choice do the following.
1. Navigate to the Home Screen you wish to put the shortcut icon.
2. Press the + symbol at the bottom right hand side of the screen next to the Phone button.
3. Press Shortcut.
4. Press Directions & Navigation.
5. Type in the address of the destination. You can also use GPS coordinates if you don't know the address.
6. Type in the name of the shortcut you are creating. IE: Home
7. Select an icon, such as the the arrow pointing to home.
8. Press Save.
9. The icon will now show up on your home screen, you can then move it around where ever you wish.
Create GPS Shortcut Folder: If you notice your screen filling up with shortcut icons you can always create a folder using the above instructions but choose "Folder" instead of Shortcut in step 3. Then name the folder GPS or whatever you like and you can store all your destination shortcuts within it.
Receiving a Phone Call: While using Google Navigation if you recieve an incoming phone call, you can take the call and google navigation will continue running in the background. It will even alert you of directions while you are talking so you don't miss your turn. Once the phone call is completed it will go right back to navigating you on your route.Playing Music while Navigating: When you play music with the built in Music app and while using Google Navigation it will automatically cut the audio of the music out while giving you speech alerts during your route. This is done so you do not miss the directions it is giving you. Many aftermarker GPS devices do this as well when playing music from built in apps.
Enable Street View: This is a really cool feature but is not really talked about much within the Google Navigation guide. While you are on your route you can double tap the screen and if a street view is available it will show the street view of where you are heading and where you need to turn. This can be really handy when navigating in town or large cities where streets are in close proximity of one another. You can also zoom in to get street view, but you will need to keep zooming in until it shows the street view which can require many button presses.Adding Layers to the Map: You can also add layers on top of the map which may help you located points of interest along your route. To do this while en route press the menu buttom and choose "Layers". It will then give you a choice of: Traffic View, Satellite, Parking, Gas Stations, ATMs & Banks, Restaurants. Just make your selection(s) and it will update the map to reflect the changes.
Turn off the Screen: While using Navigation you can manually shut off the screen and the voice navigation will continue giving you turn-by-turn voice alerts. This can help save your battery if you left your charger at home on accident. Also Google Navigation by default will keep the screen from falling asleep unless you follow this tip. Credit: Boomstk Exit Navigation: Menu > Exit Navigation Change Route: After your route is displayed, select the menu button, then select route info. on the map itself you will see a route icon. Select that and it will display multiple routes if they are available. Home Screen Navigation/Destination Shortcuts (Alternate): While in the phones regular phonebook. If you edit an entry, then under "Others" click "Add", there's a "Postal Address" option. You can put in their address from there.When you want to navigate to there, you can view the contact and a "View Home address" link will show up (or "View Work address, etc"). Click on it, it starts up Google Maps. Click on the Blue "Up" arrow that appears on the screen and it will navigate to that entries address. Credit: PaulRivers
Misc Tips:
1. When navigating, touch the ETA estimate in the lower left corner. This will make the display pop up to an overhead view of the route, complete with traffic overlays. This is handy if want to avoid bad, red traffic and wish to go another route. It won't give you options, but it will reroute if you deviate off course. Credit: dibs ODDJOB
General Tips:
1. Make sure to keep Google Maps up-to-date. Whenever an update is available its best to update your map as soon as possible to reflect any changes that may have occured.
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Apr 15, 2009
I have a background service which sometimes does not work properly. I need a logfile which displays me information so that i am able to find the error.But when i use Log.d() then ddms shows me only a few hours of the logfile. Is there a way to expand this? Or is there a more suitable way for my problem?
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Oct 16, 2010
Hey does anyone know any swype shortcuts or tricks? For instance does anyone know how to make smileys quickly? If this thread develops I'll edit and consolidate tips and tricks!
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Nov 4, 2010
Now that we have all had this device and loaded, unloaded, reloaded.....apps and data, etc. Are there any good "house cleaning" tips anyone has for keeping the X running smooth and efficient.What tips and tricks have you tried successfully?
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Aug 20, 2010
I've got my desire today and am already frustrated because there's so many things needing to be sorted on it! I've started from scratch with the 7 welcome screens and need to build those up (any tips much appreciated 4 example how to get the wi-fi switch etc etc back)
As for syncing my contacts Facebook has mucked everything up. Any chance i can stop info being taken from facebook and just importing them myself?
Also i set up a google account but had to delete it immediately (on my pc due to the email address being entered wrong) Now I've set up a new one how the hell do i change it on the phone.My phone still thinks I'm using the one I've deleted.
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Nov 14, 2009
I have just got myself a new HTC Tattoo which is NOT carrier locked. Now I'm unable to find out how to use that to debug my application. Is is possible to do that on an "unlocked" HTC Tattoo? If so, can someone point me to some resource outlining how to do that?
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Sep 20, 2010
I've got a Nexus One running a debug version of my application, and I just today downloaded and installed the 0.9.8 version of the SDK tools, and I swear that Debugging latency has increased incredibly. I never bothered to measure the overhead before the upgrade because I always found the phone's debugging overhead to be small enough to not affect matter. Well, now I have AI code which runs at ~10 MS standalone taking 300-400MS through debugging. A 40X performance loss is not something to cough at. Is it just me not seeing the performance loss previously, or has something broken?
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Jul 14, 2010
I am not sure how is this possible?But we would like to debug the apk files without having the source code (source code lies with developers).But if something breaks I would like to report it to the developers. We would like to report the crash logs and the normal info about the app.
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Feb 20, 2009
I can debug the Android Java code using eclipse and using the Remote Java Application debug configuration. This does not step into C/C++ code however as expected. I understand I have to attach the gdbserver to do this. Can someone provide a step by step tutorial on how to debug the native code of Android?Is there a eclipse plugin that makes this easier?
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May 18, 2010
I have an app which, for the last 12 hours or so, I can't NOT launch in debug mode on my handset. No matter what I do, it shows the "Process ... is waiting for the debugger to attach" dialog, and the process appears with the little green bug icon in DDMS. Never seen anything like it.Here's what I've tried: - Using the "Run" command, not "Debug", from Eclipse (duh) - Rebooting all hardware - Doing a clean install on the handset - Setting android:debuggable="false" in the manifest.That last one's freaking me out. If I can't turn off debugging for a production build, I can't distribute the app. And it's currently my top earner in the Market.Anybody got any ideas? About the only other thing I can think to try is a clean reinstall of Eclipse and the SDK, but that's enough of a PITA that I'm hoping I don't need to go that route.
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May 4, 2009
I am able to see the logs generated from java program (using Log class or System.out.println) using adb logcat.Can anyone tell me how to see the printf/cout statements in C++ application for android.
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