I've got a problem involving ClassNotFoundException. When i "Run as android application" from eclipse it works fine, but when i download it from Google Play (same source code but "Exported as signed app") it crashes with the following stacktrace:
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.larphoid.aeboing/com.larphoid.aeboing.BoingBoing}: java.lang.ClassNotFoundException: com.larphoid.aeboing.BoingBoing in loader dalvik.system.PathClassLoader[/data/app/com.larphoid.aeboing-1.apk]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2703)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2797)
at android.app.ActivityThread.access$2300(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2132)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:143)
at android.app.ActivityThread.main(ActivityThread.java:4914)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: com.larphoid.aeboing.BoingBoing in loader dalvik.system.PathClassLoader[/data/app/com.larphoid.aeboing-1.apk]
at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
at android.app.Instrumentation.newActivity(Instrumentation.java:1033)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2695)
... 11 more
I've never had this problem before, and i'm not experienced yet in "reading" Stacktraces, so i'm pretty much puzzled at this. If anyone has some pointers or solution i'd appreciate it.
Thanks.
Gonna copy this from another question as I had the exact same problem before, and this is how I fixed it:
If you're running adt rev 22, you might not be exporting your libraries. I don't know why
Google did this exactly, but in the newest revolution you have to
check to make sure you're exporting your libraries yourself.
Right click your project, click Properties, and check Order & Export
under Java Build Path. It should look like this if you want to export
everything:
Afterwards, rebuild the application and export it again. It should be working now. To test, simply install the .apk to your phone manually before putting it on the store to make sure it works.
ClassNotFoundException indicates that something is missing on the classpath. Maybe you are missing a library in the classpath.
As the name suggests classNotFoundException in Java is a subclass of java.lang.Exception and Comes when Java Virtual Machine tries to load a particular class and doesn't found the requested class in classpath.
Maybe you change your package name while signing your apk.
Check your package and class name
I've tried everything I could think of, but still I cannot run my tests using Robotium.
I set the robotium library and my main project to be exported in the Project configuration as suggested here
I've set the android:debuggable flag to true as suggested here
I also checked the android:targetPackage is set properly in the manifest as suggested here
Also tried to change the scope of the main project dependency when building the test module to Provided instead of Compile (I am not sure what that does...)
Here is the AndroidManifest for the Test project:
<?xml version="1.0" encoding="utf-8"?>
<!-- package name must be unique so suffix with "tests" so package loader doesn't ignore us -->
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.matthieu.tests"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="4"
android:targetSdkVersion="17" />
<application
android:debuggable="true">
<uses-library android:name="android.test.runner"/>
</application>
<instrumentation android:name="android.test.InstrumentationTestRunner"
android:targetPackage="com.matthieu"
android:label="Tests for com.matthieu"/>
</manifest>
And here is the exception I get:
java.lang.RuntimeException: Exception during suite construction
at android.test.suitebuilder.TestSuiteBuilder$FailedToCreateTests.testSuiteConstructionFailed(TestSuiteBuilder.java:239)
at java.lang.reflect.Method.invokeNative(Native Method)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:169)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:154)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:520)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1447)
Caused by: java.lang.reflect.InvocationTargetException
at com.matthieu.MainMenuActivityTest.<init>(MainMenuActivityTest.java:26)
at java.lang.reflect.Constructor.constructNative(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:446)
at android.test.suitebuilder.TestMethod.instantiateTest(TestMethod.java:87)
at android.test.suitebuilder.TestMethod.createTest(TestMethod.java:73)
at android.test.suitebuilder.TestSuiteBuilder.addTest(TestSuiteBuilder.java:263)
at android.test.suitebuilder.TestSuiteBuilder.build(TestSuiteBuilder.java:185)
at android.test.InstrumentationTestRunner.onCreate(InstrumentationTestRunner.java:373)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4218)
at android.app.ActivityThread.access$3000(ActivityThread.java:125)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2071)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NoClassDefFoundError: com.matthieu.MainMenuActivity
... 19 more
Note also that I see a few errors like this in the logcat:
01-04 14:44:51.822: WARN/dalvikvm(1263): Class resolved by unexpected DEX: Lcom/matthieu/MainMenuActivity;(0x44e7f980):0x249f70 ref [Lcom/actionbarsherlock/app/SherlockFragmentActivity;] Lcom/actionbarsherlock/app/SherlockFragmentActivity;(0x44e7f980):0x121770
01-04 14:44:51.833: WARN/dalvikvm(1263): (Lcom/matthieu/MainMenuActivity; had used a different Lcom/actionbarsherlock/app/SherlockFragmentActivity; during pre-verification)
01-04 14:44:51.851: WARN/dalvikvm(1263): Unable to resolve superclass of Lcom/matthieu/MainMenuActivity; (644)
01-04 14:44:51.851: WARN/dalvikvm(1263): Link of class 'Lcom/matthieu/MainMenuActivity;' failed
01-04 14:44:51.851: ERROR/dalvikvm(1263): Could not find class 'com.matthieu.MainMenuActivity', referenced from method com.matthieu.MainMenuActivityTest.testFirstTimeAppOpening
01-04 14:44:51.851: WARN/dalvikvm(1263): VFY: unable to resolve check-cast 849 (Lcom/matthieu/MainMenuActivity;) in Lcom/matthieu/MainMenuActivityTest;
If it makes any difference, I am using IntelliJ Idea (11.1.5), SDK 17, SDK Tools 21.0.1 and updated Robotium to 3.6
UPDATE:
Found one related discussion here. I can see different error messages whether I run only one test or all the tests, and my application does use FragmentActivity. But no matter what I do, I am not able to run any test (not one, not all)...
This type of errors occured when you did the below things.
1.If you entered wrong package name for "android:targetPackage" in manifest file.
so please check the target package name in the manifest file.
2.If you add the same library for both android app and test project.
Ambiguity occurs when you add same library for both android app and test project.so please add the library to app project only.
Finally.... I found the only way I could find to make it work there
Do not keep the Robotium test cases in a separate module... no idea why there is no way to make it work, but really I tried everything I could think of or I could find around.
I had this problem for a while and tried many things, what worked for me in the end was simply going into
properties -> Java build path -> Projects
for the test project and then removing the project under test and adding it again. (Since i cannot reproduce the problem and don't remember the details, it may be safest to remove the project under test, then clean both project, and then add the project under test)
I experienced the same problem again (see my other answer on this page) but could not solve the problem with my own solution this time. This time i found another solution: Removing the private libraries for the test project by right clicking on the test project and then
properties -> Java build path -> Libraries
and removing "Android Private Libraries"
PS My answer was inspired by information i found on this page: http://android.foxykeep.com/dev/how-to-fix-the-classdefnotfounderror-with-adt-17
I face same problem. its happen just because of i was trying to test my project with the JUnit instead of Android JUnit test.
so for that make test project right click on it > run as > Android Junit test.
it has work in my case.
best of luck
This question already has answers here:
Java.lang.verifyerror how do I fix or even find out the root cause?
(4 answers)
Closed 9 years ago.
Hello I get this error every time I'm trying to open an activity
java.lang.VerifyError: com.karriapps.smartsiddur.Saharit
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1429)
at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
at android.app.ActivityThread.access$2300(ActivityThread.java:125)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:4627)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:521)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
at dalvik.system.NativeStart.main(Native Method)
Can someone direct me to a solution or a way to check where the problem is coming from
thanks
A VerifyError means your compiled bytecode is referring to something that Android cannot find. In this case, it would appear that you have a reference to a com.karriapps.smartsiddur.Saharit class that Android cannot find.
As CommonsWare mentioned, a VerifyError means that you're trying to reference a class that Dalvik isn't able to load.
It's possible that this class is missing.
It's also possible that you're trying to use framework methods for an API level greater than what's present on the device, and therefore the class is being rejected as invalid.
Try setting your compiler's build level to API Level 7, which corresponds to Android 2.1. (Don't forget to set your AndroidManfest.xml's targetSdkVersion to "7" as well.) This will cause any framework calls that don't exist to raise a compiler error.
You also might want to look at the lines above/below the stack trace you received to see if there's any additional information from the verifier indicating why verification failed.
I found an interesting case that has evidence in runtime. I use:
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="18" />
So some of new Android 4 capabilities are not implenented in Android 2.3 like this one:
imageView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
Ok I can manage it so runtime will not execute it, simply:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
This works well but what about Exception handling?
} catch (NetworkOnMainThreadException nomte) {
// log this exception
} catch (SocketTimeoutException socketTimeoutException) {
// log this exception
}
NetworkOnMainThreadException is not implemented in Android 2.3 so when the class is loaded the exception java.lang.VerifyError occurs.
I ran across this problem today and as CommonsWare mentioned, the issue is that my compiled bytecode was referring to something that no longer existed. But what should you do about it?
Since I'm using Eclipse SDK the simple solution for me was to perform an Eclipse's Project → Clean to remove the pre-compiled byte code in my project that was causing the problem. The Project clean put simply allowed eclipse to perform a full fresh rebuild of my project after the clean.
I was trying to run a sample code
While launching the application in the android 1.5 emulator , I got these errors....
Any one have some hint..?
ERROR from LogCat:
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): FATAL EXCEPTION: main
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.s.android.test/com.s.android.test.MainActivity}: java.lang.ClassNotFoundException: com.s.android.test.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.s.android.test-2.apk]
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1544)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1638)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:928)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.os.Handler.dispatchMessage(Handler.java:99)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.os.Looper.loop(Looper.java:123)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.app.ActivityThread.main(ActivityThread.java:3647)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at java.lang.reflect.Method.invokeNative(Native Method)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at java.lang.reflect.Method.invoke(Method.java:507)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at dalvik.system.NativeStart.main(Native Method)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): Caused by: java.lang.ClassNotFoundException: com.s.android.test.MainActivity in loader dalvik.system.PathClassLoader[/data/app/com.s.android.test-2.apk]
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1536)
01-13 02:28:08.392: ERROR/AndroidRuntime(2888): ... 11 more
01-13 02:28:08.407: WARN/ActivityManager(112): Force finishing activity com.s.android.test/.MainActivity
Edit
This error happens to most of the beginners, the thing is that you have to add all your activities in the Manifest file.
It is a problem of your Intent.
Please add your Activity in your AndroidManifest.xml.
When you want to make a new activity, you should register it in your AndroidManifest.xml.
You may be trying to find the view before onCreate() which is incorrect.
public class MainActivity extends Activity {
ImageView mainImage = (ImageView) findViewById(R.id.imageViewMain); //incorrect
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
...
}
There is another way to get an java.lang.RuntimeException: Unable to instantiate activity ComponentInfo exception and that is the activity that you are trying to start is abstract. I made this stupid mistake once and its very easy to overlook.
In my case I forgot to add the google maps library
<application>
....
<uses-library android:name="com.google.android.maps" />
</application>
Also, check that you're not missing the preceding dot before the activity path
<activity android:name=".activities.MainActivity"/>
It also happens because of this issue. I unchecked the jars that needed be exported to the apk and this same thing happened. Please tick the jars that your app Needs to run.
This might not be relevant to the actual question, but in my instance, I tried to implement Kotlin and left out apply plugin: 'kotlin-android'. The error happened because it could not recognize the MainActivity in as a .kt file.
Hope it helps someone.
I encountered this problem too, but in a slightly different way. Here was my scenario:
App detail:
Using ActionBarSherlock as a library
Using android-support-v4-r7-googlemaps.jar in the ActionBarSherlock library so I could use a "map fragment" in my primary project
Added the jar to the build path of my primary project
Included the <uses-library android:name="com.google.android.maps" /> in the manifests of both the library project and my primary project (this may not be necessary in the library?)
The manifest in the primary project had the proper activity definition and all of the appropriate properties
I didn't have an abstract activity or any of the other gotchas I've seen on Stack Overflow pertaining to this problem.
However, I still encountered the error described in the original post and could not get it to go away. The problem though, was slightly different in one regard:
It only affected a fresh install of the application to my device. Any time the app installed for the first time, I would get the error preceded by several "warnings" of: Unable to resolve superclass of FragmentActivity
Those warnings traced back to the ActionBarSherlock library
The app would force close and crash.
If I immediately rebuilt and redeployed the app, it worked fine.
The only time it crashed was on a totally fresh install. If I uninstalled the app, built and deployed again from Eclipse, it would crash. Build/deploy a second time, it would work fine.
How I fixed it:
In the ActionBarSherlock library project, I added the android-support-v4-r7-googlemaps.jar to the build path
This step alone did not fix the problem
Once the jar was added to the build path, I had change the order on the Java Build Path > Order and Export tab - I set the JAR to the first item in the list (it was the last after the /src and /gen items).
I then rebuilt and redeployed the app to my device - it worked as expected on a fresh install. Just to be certain, I uninstalled it again 2-3 times and reinstalled - still worked as expected.
This may be a total rookie mistake, but I spent quite a while digging through posts and my code to figure it out, so hopefully it can be helpful to someone else. May not fix all situations, but in this particular case, that ended up being the solution to my problem.
This error can also be the ultimate sign of a dumb mistake (like when I - I mean, cough, like when a friend of mine who showed me their code once) where they try to execute code outside of a method like trying to do this:
SQLiteDatabase db = openOrCreateDatabase("DB", MODE_PRIVATE, null); //trying to perform function where you can only set up objects, primitives, etc
#Override
public void onCreate(Bundle savedInstanceState) {
....
}
rather than this:
SQLiteDatabase db;
#Override
public void onCreate(Bundle savedInstanceState) {
db = openOrCreateDatabase("DB", MODE_PRIVATE, null);
....
}
For me, my package string in AndroidManifest.xml was incorrect (copied from a tutorial).
Make sure the package string in this file is the same as where your main activity is, e.g.
package="com.example.app"
An easy way to do this is to open the AndroidManifest.xml file in the "Manifest" tab, and type it in the text box next to Package, or use the Browse button.
Also, the package string for my activity was wrong, e.g.
<activity android:name="com.example.app.MainActivity" android:label="#string/app_name">
I (stupidly) got the same error weeks later when I renamed my package name. If you do this, make sure you update the AndroidManifest.xml file too.
I got rid of this problem by deleting the Bin and Gen folder from project(which automatically come back when the project will build) and then cleaning the project from ->Menu -> Project -> clean.
Thanks.
Simply Clean your working project or restart eclipse. Then run your project. it will work.
In my case I haven't set the setContentView(R.layout.main);
If you create a new class do not foget to set this in on onCreate(Bundle savedInstanceState) method.
I have done this stupid mistake several times.
For me it was different from any of the above,
The activity was declared as abstract, That is why giving the error.
Once it removed it worked.
Earlier
public abstract class SampleActivity extends AppcompatActivity{
}
After removal
public class SampleActivity extends AppcompatActivity{
}
Ok, I am fairly experienced on the iPhone but new to android. I got this issue when I had:
Button infoButton = (Button)findViewById(R.id.InfoButton);
this line of code above:
#Override
public void onCreate (Bundle savedInstanceState) {
}
May be I am sleep deprived :P
In my case, I was trying to initialize the components(UI) even before the onCreate is called for the Activity.
Make sure your UI components are initialized/linked in the onCreate method after setContentView
NB: This is my first mistake while learning Android programming.
I recently encountered this with fresh re-install of Eclipse. Turns out my Compiler compliance level was set to Java 1.7 and project required 1.6.
In Eclipse:
Project -> Properties -> Java Compiler -> JDK Compliance
Whow are there lots of ways to get this error!.
I will add another given none of the others either applied or were the cause.
I forgot the 'public' in the declaration of my activity class! It was package private.
I had been writing so much Bluetooth code that habit caused me to create an activity class that was package private.
Says something about the obscurity of this error message.
Make sure MainActivity is not "abstract".
abstract class MainActivity : AppCompatActivity()
just remove the abstract
class MainActivity : AppCompatActivity() {
Got this problem, and fixed it by setting the "launch mode" property of the activity.
Another reason of this problem may be a missing library.
Go to Properties -> Android and check that you add the libraries correctly
I had the same problem, but I had my activity declared in the Manifest file, with the correct name.
My problem was that I didn't have to imported a third party libraries in a "libs" folder, and I needed reference them in my proyect (Right-click, properties, Java Build Path, Libraries, Add Jar...).
This can happen if your activity class is inside a default package. I fixed it by moving the activity class to a new package. and changing the manifest.xml
before
activity android:name=".MainActivity"
after
activity android:name="new_package.MainActivity"
As suggested by djjeck in comment in this answer I missed to put public modifier for my class.
It should be
public class MyActivity extends AppCompatActivity {
It may help some like me.
In my case I forget to make MainActivity class as public.
Other solutions:
Add activity in Manifest file
Verify all access modifiers
This happens to me fairly frequently when using the NDK. I found that it is necessary for me to do a "Clean" in Eclipse after every time I do a ndk-build. Hope it helps anyone :)
This error also occurs when you use of ActionBarActivity but assigned a non AppCompat style.
To fix this just set your apps style parent to an Theme.AppCompat one like this.:
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light">
<!-- Customize your theme here. -->
</style>
Right click on project > properties > android > and try with different version of the android earlier i was doing with android 4.4 then i changed to android 4.3 and it worked !
Most the time If Activity name changed reflected all over the project except the AndroidManifest.xml file.
You just need to Add the name in manifest manually.
<activity
android:name="Activity_Class_Name"
android:label="#string/app_name">
</activity>
I had the same issue (Unable to instantiate Activity) :
FIRST reason :
I was accessing
Camera mCamera;
Camera.Parameters params = mCamera.getParameters();
before
mCamera = Camera.open();
So right way of doing is, open the camera first and then access parameters.
SECOND reason : Declare your activity in the manifest file
<activity android:name=".activities.MainActivity"/>
THIRD reason :
Declare Camera permission in your manifest file.
<uses-feature android:name="android.hardware.Camera"></uses-feature>
<uses-permission android:name="android.permission.CAMERA" />
Hope this helps
In my case, I was trying to embed the Facebook SDK and I was having the wrong Application ID; thus the error was popping up. In your manifest file, you should have the proper meta data:
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="#string/facebook_app_id" />
I am attempting to follow Diane Hackborn's request:
For a permission that allows an application to be root, it is okay to
add the permission to the framework
<...>. However, there still must be
some kind of shared library (even if
it is a stub) for the application to
request along with it, and the package
manager should not allow the
application get this permission unless
they also request the shared library.
So I used the sdk's sample example of TicTacToe:
exported com.example.android.tictactoe.library to a /data/app/TTTLib.jar
added /system/etc/permissions/com.example.android.tictactoe.library.xml with lines:
<?xml version="1.0" encoding="utf-8"?>
<permissions>
<library name="com.example.android.tictactoe.library"
file="/data/app/TTTLib.jar" />
</permissions>
And compile com.example.android.tictactoe.MainActivity by adding a class folder pointing to the library but not adding the library itself to the .apk
It compiles, installs, starts running, but at the point when a library class were called crashes with error msg:
W/dalvikvm( 464): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
E/AndroidRuntime( 464): FATAL EXCEPTION: main
E/AndroidRuntime( 464): java.lang.NoClassDefFoundError: com.example.android.tictactoe.library.GameActivity
E/AndroidRuntime( 464): at com.example.android.tictactoe.MainActivity.startGame(MainActivity.java:51)
E/A
What do I miss? Thanks for your help.
In AndroidManifest.xml you have to enter the library dependency such as
<uses-library android:name="com.example.android.tictactoe.library"/>
Also i think you have to DEX the jar content before uploading it to the device, similar to the uploading of scala library to the device.
See http://lampwww.epfl.ch/~michelou/android/emulator-android-sdk.html and
http://lampwww.epfl.ch/~michelou/android/android-examples-in-scala/android-sdk.zip
for scripts that dexes the jar into dexed jar :)
Hope it does make any sense.
Check bin/createdexlibs in android-sdk.zip
Basically it should be something like
~/android-sdks/platform-tools/dx --dex --output=TTTLib.jar TTLLib_input.jar