I wonder whether there is any way to develop native apps (HTML-based apps is another story) that would run both on Android and iPhone? I know that there exist applications available for both OSs, so I wonder how are they ported/developed for both targets?
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I've watched many of the Google IO talks and one that I'm trying to reproduce is "Developing Android REST client applications"[1]. In this talk Virgil suggests you should not execute your RESTful queries inside a Thread/AsyncTask spawned from your Activity (which I had been doing), instead you should use a more complex architecture that uses a combination of a ContentProvider and a Service. From what I understood the reason for this design was so your data was more persistent between app restarts, and so your queries don't disappear if your Activity starts/stops (e.g on a screen rotation). I buy into both those reasons hence I'm trying to implement this. On the slides[2] page 45 We have an Activity calling a ContentProvider. Now the ContentProvider checks its local database, if the content is not there it sends an Intent to a service which fetches the content, inserts it into the ContentProvider, then the ContentProvider calls back to the Activity (with a ContentObserver) and the Activity can carry on. The question I have is how is this callback setup. The ContentProvider exposes simple methods, query, insert, update, delete which don't seem easy to adapt to a callback interface. It could be implemented by a Cursor which is designed to block, but that could be problematic as you don't' want to block your UI Thread. I'd appreciate if anyone could make this clearer to me, or show me some code. I'm hoping the Twitter app will be open sourced soon which apparently uses this architecture.
View 16 Replies View RelatedI've read through the note of the topic "Developing Android REST Client Applications" from Google IO 2010, but I still have no idea on how to start. Can anyone show me a code example? Either the code for "Option A: Use a Service API" or "Option B: Use the ContentProvider API"
View 4 Replies View RelatedQ: How does Web Applications differ from SmartPhone Applications (Iphone, Windows Mobile, Android/Nexus Application) and in what specific aspects do they differ and in what degree ?
Also for example,
Q: Why we need mobile version of Web Application like gmail.com or bankofamerica.com specifically for smartphone devices where we can access same web applications on smartphone using internet connections ? In what aspect do they differ and why do we have those differences ?
I am looking generally in to Android development.
I keep seeing information on root however I am unclear how this relates to general android app development.
I understand that there is an emulator however when I get to actually test the software on a phone does that phone have to be a rooted device or is this only required if you wish to edit the core features of the os?
Finally are there are any development disadvantages to rooting the device such as that is no longer behaves like other android phones I may deploy too?
I'm developing an application that would need to persist data locally in Android devices. I'm aware that Android provides two packages for database persistence, the normal "java.sql" and the "android.database.sqlite"? Which one is used more for persistence? I suppose that "android.database.sqlite" is the implementation of "java.sql",
View 1 Replies View RelatedWe are trying to use a shared server (Ubuntu 9.10 64-bit) to develop Android applications. The thought is that a number of developers should use the shared server for development. We have overcome some obstacles such as setting the base port for DDMS. So it is possible to run multiple emulators and multiple instances of Eclipse. But we run into problems when trying to debug applications from Eclipse. It seems as though all emulators are trying to connect to the same Eclipse instance when debugging.
View 1 Replies View RelatedI've already written some small Android Applications, most of them in one Activity and nearly no data that should be persistent on the device.
Now I'm writing an application that needs more Activities and I'm a bit puzzled about how to organize all this. My app will download some data parse it show it to the user and then show other activities depending on the data and the user interaction. Some of that data could be cached, some of it has to be downloaded every time. Some of that data should not be downloaded freshly at the moment the orientation changes, but it should on the moment the activity is created...
Another thing I'm confused about are things like a httpClient. I now for example create a new httpclient for every activity, the same thing for locationlisteners.
Are there books, a blogs or documentations with patterns, examples and advice on organizing larger apps build on android? Everything I found until now are get startet tutorials leaving me alone after 60 lines of code...
Has anyone managed to develop Android Applications using Eclipse on the Windows platform. I understand the ADB needs to recognise specific models of phone and wondered if the Tattoo is supported.
View 1 Replies View RelatedHow Titanium works with android? And it is easy to work with titanium for developing android applications?
View 2 Replies View RelatedHow to develop applications for Android. I downloaded the Android SDK but I don't see where to begin.
View 4 Replies View RelatedI try to use facebook-java-api to wrote my android application . but I got some problems . when i import all the libs in facebook-java-api,My eclipse Could not find my apk.
View 5 Replies View RelatedI am a new Java programmer. I want to learn how to develop Android applications. If someone could name the best IDE, books and websites.
View 7 Replies View RelatedCan we use the applications that released with Android Open Source Project in our commercial products? For example, the "Browser" and the "Contacts". And I also found some demo applications in SDKSamples, like Home and NotePad, can them be used for commercial products? Do we need to pay extra license fee for using these open source applications?
View 4 Replies View RelatedFirst of all, I just want to say I am a software developer, but I am not an Android developer. However I usually walk around and think on stuff. AndI've been recently thinking all the news concerning how fragmented Android is getting, with different Android versions and tweaks by different phone manufacturers, and then for developers you have different size formats. An example would be that HTC Tattoo might not be able to run everything that another phone might run, due to different screen formats, etc. And now the Android tablets are coming with different Android versions and different screen sizes, all from 5" to 11". Will this make developing Android applications harder? Apple has it safe here since they manufacturer all devices that run the iPhone OS: the pods, phones and now the pad so they can easily control and make sure not to loose any customers by introducing a new device. When Apple introduced iPad they had to make sure that all the old iPhone applications would work on the iPad. They solved that neatly by saying that iPhone applications will simply be stretched out to the double size and it would fit on the iPad. Unfortunately Android does not have the same luxury to do this. As I said, I am not an Android developer. Just a curious software developer For you guys who work actively in the Android community, does Google have a solution for this? Will you be able to run phone applications on the tablets? Is there a bridge between the devices? Are there any standardizations or will Android development become even more fragmented? you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-devel
View 2 Replies View RelatedI've yet to get an Andriod phone, looking to get the Hero when it drops next month @ Sprint. I was wondering how the applications currently available for the Andriod phones compare to iPhones applications? I really love the iPhone and it's apps but wouldn't go to AT&T for it and want to know if I'm going to be disappointed with the Apps for Andriod once I get the Hero after seeing what the iPhone has to offer.
View 7 Replies View RelatedI am about to embark on developing a mobile application for both the iPhone and the Android based phone.I have most of my gui mock ups written down on a white board and some in my head. I need to put them down on paper so I can relay my designs to others in my team.I was wondering what the best on-line gui mockup tool I could use? I have a lot of experience with Visio and I truly like it. I want a tool that would be web based so I could collaborate with others on the team. Does anyone have a suggestion for an easy gui mockup tool that I could use?
View 19 Replies View RelatedRunning Froyo with Fresh 3.4 build and recently any time I use any app that utilizes the native date/time selector, i have problems... WHen trying to set a new alarm, or edit an existing one, when I click the "Add Alarm" icon, instead of bringing up the window that allows the selection of the time the alarm should sound, the screen just flashes and goes back to the "Desk Clock" screen. Also, whenever I want to make a new calendar entry or change an existing one, the same thing happens at the point that the date/time selector window should appear.
View 1 Replies View RelatedIf you're interested in learning how to develop top class games and applications for the iPhone, HTC Touch (Android), Instinct, WinMobile, or any other mobile device or platforms - then you should definitely have a look at what they offer...http://EDUmobile.org
View 2 Replies View RelatedI'm just getting started with mobile development, and after considerable searching I'm still confused about sending a message from my iPhone to another or an Android.For instance, in building a simple Tic-Tac-Toe game, if I want to notify the other phone of a move, what is the best way to do so? Wifi, bluetooth, 3G? And how? Many methods seem to point to communicating through a web server, but I'd rather send them directly from phone to phone if possible.
View 4 Replies View Relatedok, its the Apple Fanbois turn to try and outdo the funniest video on the web..check out their lame attempt to copy it. Code...
View 12 Replies View Relatedi'm thinking to start developing in HTC hero. I want to know if i will have any problem because this phone is using SENSE UI interface (an interface developed by HTC). Any suggestion?
View 2 Replies View Relatedi dont know about the java.How can i write application in 'c' for android.
And what are the steps?
I just wanted to know if there are tutorials on emulator development? For each new phone being launched we require to build new emulators to emulate the features and look and feel.
View 5 Replies View RelatedI am trying to develop soft keyboard in my language, Amharic (Ethiopian language). I start developing the soft keyboard by using the sample soft keyboard with is included in the android SDK. But I have the following questions to ask:
1. How can I include keyboard setting options such as vibrate on key press, sound on key press, etc. such setting options are available in English soft keyboard. If you have any idea about this, please help me.
2. The other question is related to copyright issue. If I can succeed in developing the keyboard and want to sell it in market, am I going to violate the copyright law? Because I have developed this application by using the sample soft keyboard.
What is the best platform to develop apps for Android on? We have both Mac and Windows platforms available in our software team but are not aware of the pros and cons of each. If anyone could let me know what they prefer?
Should we also condider Linux?
I have a couple of apps working using eclipse and the emulator. I now want to try the apps on my htc aria. I went through downloading the usb driver as the Android Developers documentations sans and a usb driver folder now shows up in my sdk folder. However, apparently there isn't a driver for the HTC aria in the folder.
After research some people suggested using htc sync. I donwloaded htc sync and let windows check that I had the latest version. However, my phone keeps saying that it can't find htc sync on my computer.
When I plug in my HTC aria, the device manager on my lap top recognizes two devices as listed below: My HTc under Android USB devices and a HTC Android Phone USB Device. I clicked on update driver for both devices, Windows found them on-line and verified that they were the latest. I dont understand why there are two drivers, but My HT seems to have a problem as listed below. One thing that I should mention is that I am using the dreaded VISTA.
Device Manager: Android USB Devices: My HTC Device status: Windows cannot initialize the device driver for this hardware. (Code 37) Click 'Check for solutions' to send data about this device to Microsoft and to see if there is a solution available.
Description: Windows was able to successfully install device driver software, but the driver software encountered a problem when it tried to run. The problem code is 37.
Problem signature: Problem Event Name:
CODE:.................
HTC Android Phone USB Device
Device Status: This device is working normally. Driver Provider: Microsoft Driver Date: 6/21/2006
So, the best I can tell is that there isn't a driver from the normal Android repository for the htc aria yet. And, for some reason my computer can't handle the htc sync drivers.
Will there be a usb driver for the htc aria that I can download from Android Developers in the future? Has anyone else been able to get htc sync to work with the htc aria? Is there anohter way to transfer my apps to the phone for development?
I guess that I can always use the ddms environment and transfer the app, but I really wanted a more graceful way to do this.
If it's possible to develop on an android device or if it will happen anytime soon?
View 6 Replies View RelatedI am working on an app that has a homescreen. This homescreen should behave like the android homescreen where you can switch between several views by flinging your finger over the touch screen.
The solution is easy. I have 3 view instances, right, left and current view. I get this instances from the viewflipper that I initialized earlier. Since I have a HTC G1 my sreen is 320 px in width and 480 px in height.
Imagine you capture the down value of a action down motion event when you touch the screen. Then you move your finger and the screen should move in exactly the same way so you have to recalculate the view's position. It works for me so far but I am facing a strange problem. When you touch the right view without moving you finger but keeping it on the screen for less then a second the view disappears and shows the left view.
Here is my code:..........................
I think such a Homescreen for your own app could be a interestion UI element.
I am new to android games development on mobiles.can any one suggest me which API suitable to develop game. I am using Android 1.5 API for Android mobiles.I need help from you all.
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