Is Android backwards compatible, in other words can an application developed in Android 1.6 run in Android 2.0? I just published a 2.0 application and discovered that I can't find it in the market using my G1 (Android 1.6) phone. But apparently others are downloading it. Should I downgrade the application to 1.6 or do I need to create separate applications for each Android version?
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I am currently running CM 7.0.3 (2.3.3) and want to update ROM to CM 7.1.0.1 (2.3.7)
My Question is this: can I use THE SAME Titanium Backup APK from 2.3.3 to BACK UP ALL APP DATA and IMPORT APP DATA TO 2.3.7?
Here's my situation: I have an app that's been compiled using 1.5 SDK and minSdkVersion=3. Now I want to add 2 icons: one for high density screens like Droid and another one for low density screens like G1.
For this, I added the high density icon to new directory drawable-hdpi- v4/. I then compiled using 1.6 sdk and added targetSdkVersion="4" to the manifest. minSdkVersion is still 3.
This is working in limited testing, but I'm not sure if I have done everything correctly.
I have many questions:
1. By specifying v4 in drawable-hdpi-v4, the icon will not be displayed to 1.5 or below OS's. But what about users with 2.0 or higher SDK's? Will they get the non-hdpi icon, since they will have v6 or v7 ?
2. The documentation for targetSdkVersion states, "Specifying this target version allows the platform to disable compatibility settings that are not required for the target version (which may otherwise be turned on in order to maintain forward-compatibility)". Does this mean that my app will not be forward compatible as soon as I specify a targetSdkVersion? What exactly is being turned off?
3. Even if I leave out the targetSdkVersion="4", the app runs ok. So do I really need it?
4. Should I be using the latest SDK (2.1) and setting that as the targetsdkversion and compiling against that? Or some other combination of targetsdkversion and compiling sdk? I'm not using any API's that are not in 1.5..
5. Is any of this related to why some of my HTC Eris users have complained that they can no longer find my app in Market after upgrading to 2.1?
Is there anyway to create separate folders for videos and pictures?
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I've got a question as I don't have an Android 2.0 device to test on and this particular aspect seems untestable in the emulator. I've got a service that needs to be run as a foreground service. I have a notification that stops it etc, so I have no problem using startForeground instead of setForeground. However, I'd like to have 1 version of my app that works across all platforms... Is this possible? If my app is compiled with Android 1.5 and uses setForeground, then will that command actually work on an Android 2.0 device, or does it not matter which sdk was used to compile? I've tried compiling with 2.0, and surrounding the call to startForeground with a try/catch, but that throws a VerifyError when the service is started, when run on a 1.5/6 device since startForeground doesn't exist there. Can I catch and ignore the VerifyError somehow and make it work that way?
View 5 Replies View RelatedAre the newest versions of aapt backwards compatible with the older versions? i.e. can i read 1.0 & 1.5 apks with the 2.0.1 SDK aapt? My tests show me it works, but is it failsafe?If this is not the case, what's the easiest way to determine the android version an APK was developed for and know which aapt binary to use?
View 2 Replies View RelatedAccording to the instructions found here, to make your app state which screen sizes you can support, you'll need to compile your app against Android 1.6.
View 1 Replies View RelatedI plan to make some tasks like DEX file optimization be processed by installd on the background asynchronously, thus installd needs to notify the Installer of the result at some uncertain point when the request has been processed. Currently, a socket connection will be established each time when Installer sends request to installd and the connection will be closed when it returns. Thus I plan to hold another persistent socket connection for the backwards notification. Then whenever a request has been processed, installd can notify Installer through the persist socket.
Is there any other way to implement this?
I want to create an Android application that is not released to the Android Market for public consumption but only for private use of my company.Is this possible?If so can you post a link to where you can do this?
View 2 Replies View RelatedI'm using Xcode for a while, and I'd like to start developing Android Applications. However, the SDK is for Eclipse. I personally don't like Eclipse, because of the UI and it starts to suck on my iMac. I was wondering if it is possible to create Android Applications with the Xcode Tools so I can stay with my old friend Xcode (and maybe even Interface Builder (very unlikely) รถ). Can anyone tell me?
View 2 Replies View RelatedIn my application i want to create a shortcut (a button), to another application but i want the user to be able to select which application he wants...
So how do i access a list of all the installed applications and how do i create an intent to start any one of those applications ?
I am very new to programming and would like to know what is the best way to go about creating a notification icon badge similar to the ones on the iPhone apps. This would be basically for creating a badge for the notifications that end up in the notification bar.
View 2 Replies View RelatedWhat I need to do with my Incredible is so simple and I am really amazed that this phone's photo application is as bad as it is. I have about 100 photos. I need to put them into individual folders or albums (I just need a way to separate them). I have tried everything but it does not appear as though the Incredible has this capability. I did a search and found some instructions using Astro file manager however this did not work for me. Therefore, is there any decent apps out there that will allow me to create folders (or albums) and put pics into them? I also need to somehow backup the photos (probably directly off of the SD card onto my PC).
View 7 Replies View RelatedI wanna create an notification application/service, which should be accessable from other applications similar to android's Notification and NotificationManger. As i m a newbie to android development, i wanna know how to develop an service running in background n how to access it from other applications?
View 2 Replies View RelatedI am new to Android Development. What I want is to know how I have to begin thinking to program a neat, sexy GUI. I guess the android.opengl API is a good starting point. Let's say we wanna create something like a simplified 3D-Pool-Billard-Game: You see the table from the top and you have on the table the balls. You want to make them realistic (shadow, gloss).
What kind of Graphics do I need?
How to begin coding?
What kind of classes do I need? For each element (ball, table, ..)?
Where to create and encapsulate the "3D-ness"?
If you know better/additional questions, just add them or/and let me know in which direction I have to think in this case of developing. My skills/background on Java: I've programmed a lot in Java EE and used to handle graphical output with JSP/JSF. So this mobile SE for Android is new to me. Hope to get some intersting stuff together for a smooth access.
I have an app that has two buttons one for email & one for SMS. Depending on the button pressed I want to email or else SMS a certain text. I have coded the email button and it is working fine. The problem is that the dialog box that pops-up gives an option of e-mail or Messaging the text. I want to separate out the two, so that when the user presses email, only the options of email is there, and when the user presses SMS, only the option of Messaging is there.
View 1 Replies View RelatedI have read all about having separate processes for different Application components, and how to use them.I am curious, what are some appropriate use cases for when an application should actually use separate processes?It seems to me, the main advantage to using separate processes is to make the different portions of your app more easily killable by the OS.
View 7 Replies View Relatedi have a little frontend showing a list of items that it will retrieve from a service. I want that service to be started in a separate thread.so the UI is still responding to user interaction while waiting for that service to call a callback method. What is the best way to start the service in a detached thread?
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View 2 Replies View RelatedBeing interested in Android development and still in the experimentation phase - there's something I haven't been able to grasp. As far as I've been able to understand, the process lifecycle and application lifecycles are separate and as such, it would be possible for the application to still to exist, even if it's process has been killed. So I guess my question would be, in what scenario could this occur and how is the application accessible if the containing process has been killed?
View 5 Replies View RelatedI would like to define each tab's content in a different XML file so the visual editor in Eclipse can be used. That is, without all of the tabs being laid over each other. The visual editor doesn't even seem to work with the XML example provided here: [link text][1]
[1]: http://developer.android.com/guide/tutorials/views/hello-tabwidget.html "Here", It just has a Null pointer exception.
I have tried to define each tap in it's own file, for example. code...
And when adding the tab I use:
mTabHost.addTab(mTabHost.newTabSpec("tab_in").setIndicator("Input").setContent(R.layout.input));
But this causes the application to crash on launch. Is there any way to do this?
I want to set a menu option icon for a drawable that is in another jar inside an xml file. code...
Instead of drawable/my_location have something like com.somelib.R.drawable.someDrawable.
I can set this in onCreateOptionsMenu but was just wondering if it could be done via the xml file.
I'm currently developing an Android application, but I'd like to be able to handle button click events etc in a separate file for each Activity. Is this possible? At the moment, I have one very large file that handles all events for several Activity windows.
View 2 Replies View RelatedI want to have TWO calendar apps on my devices (Samsung S4 and Samsung Galaxy Tablet) such that one syncs all my personal (Google) calendars and the other syncs my work (Outlook) calendar. It is not visually useful to sync in one calendar (use 7 personal calendars - 6 family members plus group family calendar). Is it possible to setup calendar views independently across two or more calendar apps?
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View 2 Replies View RelatedIs there a way to have separate ringtones for my voicemail, email and text? I was able to choose my ringtone for my text messages but I was not able to customize for voicemail and email ringtones. Those are defaulted to the general notifications ringtone.
View 1 Replies View RelatedI want to write a separate Thread within my application (to do Bluetooth connection). Any idea where I can find any reference for help to write Threads in Android? I searched online but could not find any proper reference.
View 5 Replies View RelatedI use the Gmail app for business, but I'd like to use Google Talk with my personal Gmail account. I can't figure out how to do this? Is it possible? Seems completely lame if not.
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