In the same way a web or desktop app might have 3 or n tiers - UI, Business, Data for example - what is the suggested structure for an Android application? How do you group classes together, what layers do you have etc.? I'm just starting Androi dev (an internet based app that must respond to incoming notifications) and have no real feel for the structure I'm aiming at.
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I'm scoping a new software project and haven't had much experience with software development. This is a multipart question.
What are some recommended books for web application architecture?
We are basically looking to develop several front end applications (mobile and websites) that can query a central application pool that'll hit our backend database to retrieve the data. Is there a name for this kind of architecture?
getting a dev board for use as a mini pc. Wondering can you compile android on arm hardware or only on x86 hardware. If you can compile android on arm I will get a high end quad core dev board, if not will just go for a mid range dual core board. Thought it would be a fun project to have an auto android builder along with file and print server. Yes I know it will be slow to compile.
View 2 Replies View Relatedi'm currently trying to specifically target ARMv7 custom hardware and I'm facing issues when trying to install the APK. When I try doing "adb install app.apk" Logcat informs me that: W/PackageManager( 1062): Native ABI mismatch from package file And does not install the APK. With searching I was able to trace down that the problem might have something to do with the architectures not matching on the APK and the platform. Is this it? How does the PackageManager find out the architecture from the APK file? I'm guessing it's not trying to execute the binary or anything, it just checks the files meta data? If so, is there a place in the APK where this information is located? Or am I completely hitting blank here and I should look somewhere else?
View 3 Replies View RelatedDoes the Live Wallpaper run in the same process as the Launcher? I looked through the Launcher code and cannot really figure out where the wallpaper "layer" fits in. I am looking at this with the lens of memory consumption and safeguards that the Launcher has in place against a bloated Live Wallpaper.
View 2 Replies View RelatedCan anyone recommend any books or resources for learning smart phone architecture (specifically iphone or droid)? I am looking to learn and get into smart phone development, having been doing desktop development for a few years now.
View 3 Replies View RelatedHow can I hide the suggested words or turn off auto complete for the virtual keyboard?
View 9 Replies View RelatedSurprisingly, I don't seem to have issues with the OpenGL side of things (which is very unusual), but my problems stem from getting a clear idea for app architecture and a few other problems. Right now, most tutorials on the net just describe the render portion. I know that when I create a GLSurfaceView and hook a Renderer into it, it uses it's own thread for rendering.
I want to do logic operations and other gameplay stuff (like moving characters and whatnot) in it's own thread as well. Can anyone explain a good approach to this? I'm guessing the two threads will have to be synchronized (do logic, render, repeat), and limited based on time so that it performs smoothly across different devices.
I've downloaded the Swiftkey Keyboard and like it a lot but am a bit frustrated by the autocomplete concept they use. I guess there should be two options: autocorrect spelling mistakes I make and another option for autocompleting words I am trying to type. Too often I find that Swiftkey's "predicted" word option based on what I type is so far off that I end up sending a nonsensical message to people.
View 3 Replies View RelatedWhen you're typing and want to use the word you typed instead of the currently selected suggested word, how do you get rid of the suggested word list? (In particular I'm thinking of the Gmail app in landscape mode.)
View 12 Replies View RelatedI'm a new Evo user. I loved the auto correct options on my BB. I like the auto correct of the evo, however the suggested words that pop up really distract me and slow me down. When I shut this option off, though, I can't seem to find any way to spell check or auto correct any words in texts, etc. Is there a way to keep the auto correct feature, but hide all the suggestions?
View 2 Replies View RelatedWhen I make a new android project and I go to res/values/string.xml I get a screen to add android resources instead of a XML document. I keeps getting the error about : java.lang.NullPointerException.
Is there a way to just alter a XML file (like suggested in tutorials)?
What applications would you say are a must?
View 3 Replies View RelatedFor example, I accidentally typed and added the word 'ti' to the dictionary whilst trying to actually type in 'to'. Now everytime I go to write 'to', it assumes that I want 'ti'. Is there any way of editing the saved words so that I can delete these types of words?
View 19 Replies View Relatedhow to remove a suggested place by Google Now? what's the real ETA from wherever I am to my actual home because Google now keeps suggesting me a place I haven't really been to, I've passed by that place because it is on my way to almost everywhere I go but I've never actually stayed more than 2 seconds there.
View 6 Replies View RelatedThere's a route I take to my sisters place that is different than the Droid would have me drive. I swear I read or a friend told me there is a "save route" feature that once you finish driving your way, you can select which will help force it to take you that way in the future.
I can't find this, if it exists. No other GPS I've owned have had this feature, and I've often lamented, "wouldn't it be nice if it *knew* I wanted to take this road over that one." Only asking 'cause someone once told me this might be a feature. Am I way off or am I blind to finding it?
I looked at my friend's droid and it doesn't do this and I don't recall my first droid (which had other problems) doing this either. Also, the green/amber light doesn't come on when I'm charging my phone. Been trying to get a replacement from verizon but all the refurbished phones they've sent me have been worse off, eg. horrible connectivity, overheating, etc.
View 6 Replies View RelatedI use the Yahoo mail android app (as well as gmail). When I create an email in the app and "click" in the "to" field and type a letter I get a whole raft of email address suggestions that are not in the contacts. I've looked in my phone contacts and they aren't there. I've looked at Yahoo mail settings and see nothing there. I've gone to the desktop Yahoo mail an tried looking in contacts there and they don't show up. Many of these are addresses of people that I recognize and have probably either sent or received an email from them but certainly never saved them as a contact. I tried long pressing on the suggested address and it highlights it but no options are given. It doesn't happen in my gmail. I've gone to URL...contacts and they don't show up there. I know I should just switch to gmail only but this is an old address that I want to keep active. I have a Moto X with Kitkat. This has followed me from phone to phone.
View 1 Replies View RelatedAnalogue to this one (http://stackoverflow.com/questions/2788345/replacing-xml-in-file-from-document-in-java or http://www.exampledepot.com/egs/javax.xml.transform/WriteDom.html) I try to use it under Android. The problem is, that I can't use the suggested solution under android, because it throws java.lang.verifyError. After reading a little bit, I found out, that the class that was used to store the data to file, is not usable in android. can you suggest another solution, which is similar easy to use?
View 3 Replies View RelatedI have a widget that shows some data fetched from the Internet. I may have multiple widgets visible on the screen, each displaying some data, partly the same as the other widgets. From time to time I re-fetch the data from the Internet and update the widget views. I've modeled this in an MVC style: I have a model which I can invoke a "re-fetch-data" on, and which the views listen on. My questions:
A) Is it wise to let my model be a singleton?
B) Can I rely on that all widgets are served by the same AppWidgetProvider? Or may some of my widgets get served by a different AppWidgetProvider instance? Or, more generally: Is there any guarantee that there will be only one instance of my AppWidgetProvider? If there is only one instance of my AppWidgetProvider, then I could use an instance variable here for the model, and pass either my AppWidgetProvider or the model around where needed. Perhaps a better option?
C) In the AppWidgetProviders onUpdate method, can I be sure that the same "context" object is passed as argument each invocation?
How do I find the make and model of an Android device?
View 2 Replies View RelatedI would like to know the device model number for android devices like "model number" = 'T-Mobile G1'. can any one please tell me how to do it.
View 5 Replies View RelatedIs there a way to detect the device model of a user through Java code on Android? To return htc-magic or htc-dream or something like that, somehow? I have been trying to detect this through the user agent when the client is accessing an web page, however this is always Java0 through Android. Has anyone done this? Any ideas?
View 2 Replies View RelatedLet me start by saying that I'm sure this has been covered but a search revealed nothing and an updated discussion can always help. So again, sorry for covering treaded ground, but here we go.I'm leaving my job and giving up my company blackberry - so I need a new phone/carrier/the whole package. I am at this point pretty darn addicted to smartphones and use them heavily for web browsing, email, maps, twitter, playing music, and scheduling myself (I don't really play games though). While my blackberry curve was leagues better than my old Windows Mobile-powered-Wing it still has left a lot to be desired. I need a step up.So its basically iphone vs an Android phone and while the iphone seems to win in nearly all the benchmarks out there, I just can't get past the Apple Tax, closed platform, non-replaceable battery, and my general Google fanboy-ism. I could also see myself developing OSS apps at some point - which Android has the more compelling story for.Further research has lead me to view my options as the Nexus, HTC Droid, or Eris. The Eris - although it has great reviews - just seems a bit kiddie so it's a distant third.My concerns are in this order* Good hardware (I'm ok with an onscreen keyboard unless the touchscreen sucks)
* Total cost of ownership
* Ability to use at my new job (meaning syncing with Exchange Server - though this shouldn't be a huge problem)
* Snazzy Operating system.
I am integrating Paypal into my application for in-app purchase. I am using Paypal Mobile Checkout for this purpose. I will like to know whether Android Market will approve this kind of application which uses a payment gateway other than Google Checkout. Can anyone let me know where I can find information related to this?
View 5 Replies View RelatedMy contract with T-Mobile UK is up for renewal & i think its time to upgrade from my beloved G1 to something else, Question is, What to? Over the past few months i have been looking at many different phone's and i have no idea what to go for. Basically I'm after the following from my phone:
*Android 2.1/2.2 Based device
*Physical Keyboard
*Vanilla/Stock Android (No UI)
*Better Battery Life then my G1. The phones I've been looking at are the Motorola Milestone, Milestone 2 & the HTC Desire Z/T-Mobile G2. The only thing with all all of them is they all feature a new UI (Either MotoBlur or Sense) which I'm not after. I thought i had solved all my problems with the T-Mobile G2 (the Desire Z but with just Stock Android) until I found out its for the US only. Is there any other models that anyone can recommend or am I just going have to put up with not having Stock/Vanilla Android?
For an example of what I'm looking for, hit the Home button while you're composing a message in the Gmail app. A little message will pop up at the bottom of the screen for a moment that says "Message saved as Draft."
I can't figure out how to display one of those messages myself, and I'm not sure what to call it so I can't do a search for it.
I would like to know if there is a way for reading the Phone Model Pro grammatically in android. I would like to get a string like HTC Dream, Milestone, Sapphire or whatever.
View 3 Replies View RelatedI'd like to map an Array of "complex" data to a ListView. In a very simplified form my data model would look like something like this:
Code...
I am new to both Android and Stack Overflow. I have started developing and Android App and I am wondering two things:1) Is it possible to parametrize a TextView? Lets say I want to render a text message which states something like: "The user age is 38". Lets suppose that the user age is the result of an algorithm. Using some typical i18n framework I would write in my i18n file something like "The user age is {0}". Then at run time I would populate parameters accordingly. I haven't been able to figure out how to do this or similar approach in Android. 2) Let's suppose I have a complex object with many fields. Eg: PersonModel which has id, name, age, country, favorite video game, whatever. If I want to render all this information into a single layout in one of my activities the only way I have found is getting all needed TextViews by id and then populate them one by one through code. I was wondering if there is some mapping / binding mechanism in which I can execute something like: render(myPerson, myView) and that automatically through reflection each of the model properties get mapped into each of the TextViews. If someone has ever worked with SpringMVC, Im looking for something similar to their mechanism to map domain objects / models to views (e.g. spring:forms)
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