I 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?
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I forgot to mention that I am using a third party JAR file that includes about 2900 classes.
View 3 Replies View RelatedHow do you create a Java program that runs on startup, in the background? I need to create this, or some type of java/c service.
I've created this for an iPhone, and I'm porting my app to the android.
For my first application, the only testing I've really done to this point is on my Droid X. I want to think through the various hardware differences and come up with a testing plan that is representative of the Android landscape. My initial thought is to create a list of emulators that have unique qualities such as screen size and SDK levels. I've noticed very quickly how the UI of my application will need some adjustment when viewed on devices that don't carry a 4.3" screen. How have you approached this hurdle in your own development? Chris Stewart cstewart...@gmail.com http://www.androidsdkforum.com *Want to advertise your Android application for free? Email me for details!*
View 9 Replies View RelatedAfter deleting a phone device from the emulator, I can no longer hit the green triangle button in eclipse and have it launch my application in the emulator. I had been developing for 2.0.1, but then decided to try my app out in 2.1. I created a phone device for 2.1 and tried running it. I encountered some problems. Eclipse pops up a dialog box: Problem Occurred, Launching "my app" had encountered a problem. An internal error occurred during: 'Launching my app". When I look at details, it says: An internal error occurred during: "Launching Pingo". java.lang.NullPointerException.
View 3 Replies View RelatedI want to close my application, so that it no longer runs in the background.How to do that? Is this good practice on Android platform?If I rely on the "back" button, it closes the app, but it stays in background. There is even application called "TaskKiller" just to kill those apps in the background.
View 6 Replies View RelatedI have a WebView. I'm not quite sure how caching works for it. Ideally I'd like to load a web page from the network once (images included), then from then on only ever load it from the local cache. I'm not sure if we have this level of control over webview. Will it at some point just auto-clear the cache? How could I tell? I need to be sure that it's really keeping the page cached between different runs of my application.http://developer.android.com/reference/android/webkit/WebSettings.html.
View 1 Replies View RelatedAnyone have a favorite simple paid / free application they use while jogging? I noticed some remarks that accuracy seems to differ across different jogging applications, and some stop tracking if you get a phone call or text message. Any GPS jogging applications that run also in the background so you can call or text?
View 37 Replies View Relatedis there a terminal emulator app that runs on this fone that is free? or is it only the better terminal emulator pro on the android market that can still run on 1.5?
View 3 Replies View RelatedSeems like since 2.1 my Droid runs hot when doing extended surfing or using the car dock. It gets very hot in the car dock (with GPS and navigation running). Combine that with the heat effects of the sun and the Droid gets very hot. Any one else notice this? Seems like this would be bad for both the Droid and the Droid battery. Normal?
View 17 Replies View RelatedI'm on fabs rom..one of chevs kernels overclocked at 1.0ghz same setup i had on my last droid
i get phones run diff from one another but it seems to matter wat kernel i throw at this its running hotter and doing basic things like just some light browsing sometimes get the processor up to 42-44 c
any tips on something i can possibly try
I 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 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 RelatedI'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?
View 2 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):.....
Basically i want to start Notepad application in android from my application , can i do this in android using runtime.exec() method of RuntimeClasss and assign it to a process and kill the process later.
View 8 Replies View RelatedI have a native android library (.so) I am bundling with some application. In the native code I want to verify the signer/package name of the calling application.
The reason is, currently anyone can open up the .apk file take my .so file and use it to built their own applications.
Is there a way to securely identify the calling application from Java side? This could be package name, signature or anything else that can identify the Android application in a unique way.
I am calling a method of another .apk file dynamically at runtime in my application. I can execute it successfully if method does not contain any variable which is defined outside of that method.
But if I am using the variables which are defined outside that method ( in the same activity or same .apk) then my application throws "java.lang.reflect.InvocationTargetException" at runtime.
For e.g. if method defines as ,
COE:...................
I am making an app for Android, in my Activity I need to load an array of about 10000 strings. Loading it from database was slow, so I decided to put it directly into one .java file (as a private field). I have about 20 of these classes containing string arrays and my question is, are all the classes loaded into memory after my application is started? If so the Activity in which I need these strings would be loaded quickly, but the application as a whole would have a slow start...
Is there other way, how to very quickly load an 10000 string array from a file?
UPDATE:
Why I need these strings? My Android app allows you to find "journeys" in Prague's public transit - you choose departure stop, arrival stop and it finds your journey (have a look here). My app has a suggestions feature - you enter leter "c" as your departure stop and a suggestions ListView appears with stops starting with "c". For these suggestions I need the strings. Fetching the suggestions from database is slow (about 400ms on G1).
I'm currently on a HD2 But want a good Android phone. I've been looking at the Motorola Milestone, Qwerty Keyboard, Android 2.2, looks quite nice. I just wanna know, are there any cons to this phone, and also, can it runs 3D Games (Like the game loft ones) quite well? Also, is it a fast phone in general?
View 12 Replies View RelatedI have a few questions about the phone. 1.Does it support Java applications. If not, is there any third-party application to enable it? 2.After using this phone for some time, would you recommend me any other phone in the same price (more or less)? 3.What do you think about the camera? Does it make good photos or rather bad? 4.Could you give me some sample photos made using the phones camera? 5.When does the phone start to be laggy, and how to prevent it? 6.I've heard about rooting the phone and is it 100% safe? Having a bluetooth without an ability to send files is just silly.
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