I'm trying to run J2SE JAVA Application on Android.As you know, the main problem is that J2SE classes such as awt, applet, and etc are not supported in Android. Consequently, this means that I should replace those many java classes with Android classes.So, Do you have some idea or information for replacing J2SE classes with Android classes?
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I know Java apps can be run in Android. But what I want to know is this: I have a perfectly normal Java app and I want to port it to an android platform. What changes would I need to do to my app in terms of GUI and other code to make it usable in Android? I know Android uses XML file to control the look and feel of its app. So would I need to change my GUI completely?I just want to know the general overview of how porting may be done. If anyone could point me to right resources, that would be great. Also, for your info I'm a newbie to developing android app, so please be patient with me.
View 2 Replies View RelatedIs it possible to port a C++ application which uses the STL extensively to Android? I understand that currently the NDK does not support this, but is there any effort (open source or otherwise) underway to achieve this?If not is there a way to cross compile libstdc++ for Android?
View 2 Replies View RelatedI currently have an application using the libraries swing, swing.table, and awt on a java applet that I have running. I want to know what are the steps to get the application running as a native android app. I heard that I could use programs like Phonegap to just release a web based app for multiple platforms, but I am new to Android Programming (so far I just made a Hello Android app). I searched swing and awt, but I could not find any useful info.
View 5 Replies View Relatedhow to structure a very simple (but computationally intensive) app which has the following general characteristics (no details needed).The app has some data (say 2MB) statically stored.When the app starts this data is preprocessed and a large structure of about 40Mb is created.
After the initialization, the app has one text field for input, one for output and a button (for start/stop).The user enters a query then press the start button.The app computes a result using the large array.If the calculation on the input takes too long, the user can stop the processing with the stop button and start again with a new input.
When I was doing this under windows/linux with C/C++, I had no problems: I used a large global array and two threads, one to draw interface and respond to user (mouse, clicks, etc.) and one to perform the computation.Which is the standard (best) way to structure this kind of app in Java/ Android ?
Should I use an Activity for the graphic interface and a Service for the computation ? Can I build the large array in the Activity when the app starts and pass a reference to it to the Service every time Start button is pushed ?
I just need to be pointed in the right direction, to avoid some blind alleys. In a sense using c/c++ would be better, but I read that developing in Java (for Android) is much easier so I will try first with Java and revert to C only if the app will turn out to be too slow.
I am developing in Eclipse with Android plugin. I am trying to execute the following J2SE code on Android. It is being compiled without errors as I have imported the JRE library in the android project. In the Configure Build Path option I have imported JRE System Library and in Order and Export option I have also exported this JRE System Library.
But when it runs in emulator it gives the exception and failed to run. I think the jar files of JRE are not actually exported to Android emulator platform. If so, can anybody tell me how to export the jar files to Android emulator platform.
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I know Java apps can be run in Android. But what I want to know is this: I have a perfectly normal Java app and I want to port it to an android platform. What changes would I need to do to my app in terms of GUI and other code to make it usable in Android? I know Android uses XML file to control the look and feel of its app. So would I need to change my GUI completely? I just want to know the general overview of how porting may be done. If anyone could point me to right resources, that would be great. Also, for your info I'm a newbie to developing android app.
View 3 Replies View RelatedI am interesting in: what is the best way to write applications (for example games or business apps) for so different platforms like Android and Phone 7 with minimal changes in source code, logic and other developing artefacts? Or it is impossible and i must write my application two times from the "ground" for each of devices? Please tell me about your experience?
View 3 Replies View RelatedI am trying to port 1.6 gmail app to android 2.0 on the emulator. I was able to install but when I execute the app I get:
no classdef found error 1)
E/AndroidRuntime(494): Uncaught handler: thread main exiting due to uncaught exception E/AndroidRuntime(494): java.lang.NoClassDefFoundError: com.google.android.providers.gmail.MailProvider$1 E/AndroidRuntime(494): at
com.google.android.providers.gmail.MailProvider.onCreate(MailProvider.java: 221) E/AndroidRuntime(494): at android.content.ContentProvider.attachInfo(ContentProvider.java:710)
E/AndroidRuntime(494): at android.app.ActivityThread.installProvider(ActivityThread.java:4267)
E/AndroidRuntime(494): at android.app.ActivityThread.installContentProviders(ActivityThread.java:4042)
E/AndroidRuntime(494): at android.app.ActivityThread.handleBindApplicat
How to resolve the class def error I can find the relevant jar files under /system/framwork is there an environment variabel that can be set in the emulator prob thats missing a link.
2) Is there a gmail app apk thats available for android 2.0 if so how do I find the apk file to install
3) How do I get the market app to the emulator?
I am attempting to put my C++ program onto an Android phone but have run into several problems with the library linking. It seems most of the useful information I find on this topic through google is outdated (motz) or simply does not account for the complexity of my program. I have been able to run simple C programs but fail when attempting to use libraries outside of Android's Bionic/libc.So my questions are:
Is it possible to port pre-existing *.so libraries onto Android? If so, how could I do this without seg faulting?
Should I be using the CodeSourcery compiler (arm-none-linux-gnueabi-*)? How can I work around the lack of a separate thread library?
Could someone guide me to an online tutorial that explains this really well?
View 8 Replies View RelatedI have a huge midlet that is completely based on javax.microedition.lcdui and javax.microedtion.m3g.I need to completely rewrite my midlet to port it to android? Is there a way to use javame class in android?
View 5 Replies View Relatedjarkata commons lib is very useful for our everyday development.is there any porting to android?or is there a good way to porting the jarkart commons libs to the android environment?
View 2 Replies View RelatedMy game runs fairly well on my phone, but i want to increase the performance by using opengl. However currently i use the Canvas. I am a beginner in opengl. I have to port all my drawing code to opengl. However can somebody give me directions. For example how do i do the following in opengl:
c.save();c.scale(0.3f+scale, 0.3f+scale, width/2, height/2) c.drawBitmap( bMsg.bitmap, width/2 - bMsg.bitmap.getWidth()/2,dy+height/2 - bMsg.bitmap.getHeight()/2, MESSAGE_PAINT);c.restore();
And why cant i just use Canvas as an abstraction layer (facade) for opengl. An implementation of canvas could call the correct opengl methods in order to render. Why do i have to port all my code. I thought the canvas was a good abstraction interface to a drawing surface, why do i have to bother with opengl? It looks like this is possible, when is see the following contructor: "public Canvas (GL gl)" Also the this seems usefull. SURFACE_TYPE_GPU Surface type: creates a surface suited to be used with the GPU So what should i do? Re implementing the GamePainter completely and call opengl functions directly? Or is there some kind of abstraction mechanism, so that i can use OpenGL with just a few lines of code?
I own an Motorola XT316 device, and i can't find an Custom ROM, so i was thinking to port one from Galaxy 5 (i5550) or LG Optimus me (same hardware, same screen, maybe same camera).
The problem is how to do it, because theres some differences between them like the camera. The XT316 has an locked bootloader, this can screw everything?
I tried to port my Micromax A57 [Base] with Karrban A5 [used for port]. When I installing everything works great but, it stuck at boot. How do i check where is the fault or is there anything to do ?
View 2 Replies View RelatedNot really a "problem" per se, but an annoyance.I ported my number across to Orange from Voda but in the Phone Status the MSISDN field is still displaying the old number. It's not that I can't remember my number (it's a memorable no. which is why I wanted to keep it), but it's annoying me as I can't seem to get this field to reflect the change.I've tried rebooting it after leaving the SIM out but no difference.Is this just a "bug" or is it something Orange will have to fix/update for me by sending a request to my SIM or something?
View 2 Replies View RelatedI want to add <uses-permission> via programatically .I want to telephone number of the device.For that i need to access the phone state.But i need to add that permission only with Java code at runtime. Is it Possible to do so. (or) Can you suggest any alternative way to read the telephone number .?
View 4 Replies View RelatedIs there any ready library to read ePub format? I found ePublib in
http://github.com/psiegman/epublib. I'm still learning how to use it. I wonder if there is ePub jar which ready to use for read ePub format in android.
I have a native application that I would like to start from a Java interface. Does anyone know of a good way of doing this? can start the application using adb, with no problems. I can also start the application using Runtime.exec(), but that doesn't work so well for me; I need the application to run outside of a Java Runtime Process. Any ideas?
View 2 Replies View RelatedI m a programming noob here..i need help on some issues here. I understand that Android is built from Java. I need to know if i can run a java application on android? Or can i run the application with minor change to the current coding? I read about Java ME can run on android but what abt .Jar file?
View 6 Replies View RelatedI have developed bluetooth application where native library will be initiated by Java application (using JNI wrapper). JNI will call the entry function of the native library and then it will create Pthread to for scanning the device. Once Scanning is over, i will get the callback which i registered during the entry function of the native lib (called by app). But i haven't received the callback, but if i run the same native library in the shell (executable from the shell terminal) it is working fine. Can any one help me, if there is any specific architecture needs to follow while developing Java application based on native lib?
View 4 Replies View RelatedI am trying to run a native executable from inside an android java application. The native executable exists in my assets. At start of activity, I copy it from assets to my application cache Dir. then I use Process Builder to run it.I tried to run "chmod 777" on the file and on cache directory containing it and I ensured permissions are granted using adb shell. but I still get this permission exception.
View 4 Replies View RelatedI have developed a 2D game in Java Swing for a desktop application. My characters are simply JLables that move around over a static background image. I do the animations for the characters walk sequences by changing their image every certain number of game logic loop iterations. Being new to android, what would be the best way to port my game over to android since Swing is not supported? Is there something like a JLabel that can be used for characters? A whole different approach?
View 5 Replies View RelatedIn my application i want to upload the image.for that i have to get images from gallery in android device.can pl send me that code get images from android device gallery
View 1 Replies View RelatedI added a third party jar in my application and tried to run, but its showing, java.lang.VerifyError..
View 4 Replies View RelatedI plan on writing a Java 3D game that will work both on PC and Android. Unfortunately it looks like there is no common OpenGL API for both platforms.Do the APIs differ significantly? Is there a way I could use the same 3D code in both versions? Is it a good idea?
View 3 Replies View RelatedI am currently working on porting a application written in C in android platform. I need to know that can i invoke/call the getSystemService from the C application using invocation interface by JNI. Meaning using a .java file which will interact with the interace provided by the android.telephony.TelephonyManager.java for using getCallState() and other mehthods.
View 2 Replies View RelatedI followed this stackoverflow thread to implement EmailSender using Javamail on Android. But I am still getting this exception: Could not connect to SMTP host: smtp.gmail.com, port: 465. I am using Android 1.6.
View 2 Replies View Relatedi get following error, if i test my app on a real android phone. On the emulator, my app works fine.
W/dalvikvm( 321): threadid=3: thread exiting with uncaught exception (group=0x4000fe70) E/AndroidRuntime( 321): Uncaught handler: thread main exiting due to uncaught exception E/AndroidRuntime( 321): java.lang.VerifyError: de.stefandahmen.android.TourList E/AndroidRuntime( 321): at java.lang.Class.newInstanceImpl (Native Method) E/AndroidRuntime( 321): at java.lang.Class.newInstance (Class.java:1472) E/AndroidRuntime( 321): at android.app.Instrumentation.newActivity(Instrumentation.java:1097) E/AndroidRuntime( 321):.....