Null Pointer Exception in "Linphone" Library Android

Question

I have created an Android Application in that I want to make voice and video call using "Linphone" library.

I successfully download and setup the library project but when I run project get the below error in "LinphoneService.java" file.

I get error in this lines:

LinphoneCoreFactory.instance().setLogCollectionPath(
            getFilesDir().getAbsolutePath());
LinphoneCoreFactory.instance().enableLogCollection(
            !(getResources().getBoolean(R.bool.disable_every_log)));

Exception:

03-07 17:35:41.400: D/AndroidRuntime(8217): Shutting down VM
03-07 17:35:41.400: W/dalvikvm(8217): threadid=1: thread exiting with uncaught exception (group=0x417e4da0)
03-07 17:35:41.400: E/AndroidRuntime(8217): FATAL EXCEPTION: main
03-07 17:35:41.400: E/AndroidRuntime(8217): Process: org.linphone, PID: 8217
03-07 17:35:41.400: E/AndroidRuntime(8217): java.lang.RuntimeException: Unable to create service org.linphone.LinphoneService: java.lang.NullPointerException
03-07 17:35:41.400: E/AndroidRuntime(8217):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:2824)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at android.app.ActivityThread.access$1900(ActivityThread.java:172)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1390)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at android.os.Handler.dispatchMessage(Handler.java:102)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at android.os.Looper.loop(Looper.java:146)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at android.app.ActivityThread.main(ActivityThread.java:5653)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at java.lang.reflect.Method.invokeNative(Native Method)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at java.lang.reflect.Method.invoke(Method.java:515)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at dalvik.system.NativeStart.main(Native Method)
03-07 17:35:41.400: E/AndroidRuntime(8217): Caused by: java.lang.NullPointerException
03-07 17:35:41.400: E/AndroidRuntime(8217):     at org.linphone.LinphoneService.onCreate(LinphoneService.java:140)
03-07 17:35:41.400: E/AndroidRuntime(8217):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:2814)
03-07 17:35:41.400: E/AndroidRuntime(8217):     ... 10 more

Try downloading the source and investigating the line with the error — TameHog, Mar 07 '15 at 12:10
I think it has something to do with the get resources().getBoolean(). Or that call to instance(). Try adding some logging statements to see which one is null — TameHog, Mar 07 '15 at 12:14
Right before those two lines add: `Log.d("LIN", "instance: " + LinphoneCoreFactory.instance());` and `Log.d("LIN", "resources: " + getResources() + " bool: " + getResources().getBoolean(R.bool.disable_every_log));` — TameHog, Mar 07 '15 at 12:23
So that means you somehow need to create a new instance of it and set it that variable — TameHog, Mar 07 '15 at 12:34

score 2 · Answer 1 · answered Nov 19 '15 at 18:45

2

I had the same problem, to fix this your libs folder must be located inside app/src/main. Also if you are working with Android Studio, your libs folder must be called jniLibs.

Hope this helps.

answered Nov 19 '15 at 18:45

Isaac

1,436
2
15
29

Can you provide me more details as I am getting this error with android studio. – Md Mohsin Jan 25 '17 at 18:24
Sorry, I don't know what you mean. I'm not longer working with that, but as far as I remember, all you have to do is place your linphone libs files in the folders that I mention. – Isaac Feb 02 '17 at 12:57

score 0 · Answer 2 · edited May 23 '17 at 10:32

0

Try changing:

public static final synchronized LinphoneCoreFactory instance() {

    try {

        if (theLinphoneCoreFactory == null) {

            Class lFactoryClass = Class.forName(factoryName);

            theLinphoneCoreFactory = (LinphoneCoreFactory) lFactoryClass.newInstance();

        }

    } catch (Exception e) {

        System.err.println("Cannot instanciate factory ["+factoryName+"]");

    }

    return theLinphoneCoreFactory;

}

To:

public static final synchronized LinphoneCoreFactory instance() {

    try {

        if (theLinphoneCoreFactory == null) {

            theLinphoneCoreFactory = new LinphoneCoreFactoryImpl();

        }

    } catch (Exception e) {

        System.err.println("Cannot instanciate factory ["+factoryName+"]");

    }

    return theLinphoneCoreFactory;

}

Use: link to import native libraries. Copy all of the directory's and files from this file into the project's /libs/

edited May 23 '17 at 10:32

Community

1
1

answered Mar 07 '15 at 12:44

TameHog

950
11
23

It gives this error: at org.linphone.LinphoneService.onCreate(LinphoneService.java:141) 03-07 18:17:58.788: E/AndroidRuntime(17765): at android.app.ActivityThread.handleCreateService(ActivityThread.java:2814) 03-07 18:17:58.788: E/AndroidRuntime(17765): at android.app.ActivityThread.access$1900(ActivityThread.java:172) 03-07 18:17:58.788: E/AndroidRuntime(17765): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1390) 03-07 18:17:58.788: E/AndroidRuntime(17765): – John SMITH Mar 07 '15 at 12:51
What's the exception? – TameHog Mar 07 '15 at 12:52
03-07 18:17:58.788: E/AndroidRuntime(17765): java.lang.UnsatisfiedLinkError: Couldn't load linphone-armeabi-v7a from loader dalvik.system.PathClassLoader[dexPath=/data/app/org.linphone-6.apk,libraryPath=/data/app-lib/org.linphone-6]: findLibrary returned null – John SMITH Mar 07 '15 at 12:53
That's me and the shared library isn't there. Did you include the natives? – TameHog Mar 07 '15 at 12:54
I added all the libraries, which one is missing? – John SMITH Mar 07 '15 at 12:55
Updated answer check it out – TameHog Mar 07 '15 at 14:58

Null Pointer Exception in "Linphone" Library Android

2 Answers2