NPE on multidex

[emce]

I have my Application class extended by MultiDexApplication, and because of this, with my first activity I get NPE for any call for Hawk, probably caused by delay of creating multiple dex files (I think). Did you guys encounter such a situation?

09-14 14:42:23.848 5425-5425/com.myapp W/System.err: java.lang.NullPointerException 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at com.orhanobut.hawk.Hawk.get(Hawk.java:128) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at com.orhanobut.hawk.Hawk.get(Hawk.java:151) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at com.myapp.preference.Configuration.getBool(Configuration.java:62) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at com.myapp.activity.SplashActivity.onCreate(SplashActivity.java:58) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.Activity.performCreate(Activity.java:5008) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.access$600(ActivityThread.java:130) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.os.Handler.dispatchMessage(Handler.java:99) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.os.Looper.loop(Looper.java:137) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at com.myapp.App.startCatcher(App.java:100) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at com.myapp.App.onCreate(App.java:60) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:999) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4151) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.access$1300(ActivityThread.java:130) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.os.Handler.dispatchMessage(Handler.java:99) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.os.Looper.loop(Looper.java:137) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.main(ActivityThread.java:4745) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at java.lang.reflect.Method.invokeNative(Native Method) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at java.lang.reflect.Method.invoke(Method.java:511) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 09-14 14:42:23.852 5425-5425/com.myapp W/System.err: at dalvik.system.NativeStart.main(Native Method) 09-14 14:42:23.872 5425-5429/com.myapp D/dalvikvm: GC_CONCURRENT freed 396K, 12% free 8945K/10055K, paused 11ms+0ms, total 14ms 09-14 14:42:23.976 5425-5429/com.myapp D/dalvikvm: GC_CONCURRENT freed 310K, 10% free 9087K/10055K, paused 13ms+11ms, total 33ms 09-14 14:42:24.008 5425-5429/com.myapp D/dalvikvm: GC_CONCURRENT freed 306K, 9% free 9180K/10055K, paused 11ms+0ms, total 15ms 09-14 14:42:24.036 5425-5429/com.myapp D/dalvikvm: GC_CONCURRENT freed 354K, 10% free 9261K/10183K, paused 11ms+0ms, total 16ms 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.activity.SplashActivity}: java.lang.NullPointerException 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.access$600(ActivityThread.java:130) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.os.Handler.dispatchMessage(Handler.java:99) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.os.Looper.loop(Looper.java:137) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.myapp.App.startCatcher(App.java:100) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.myapp.App.onCreate(App.java:60) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:999) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4151) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.access$1300(ActivityThread.java:130) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.os.Handler.dispatchMessage(Handler.java:99) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.os.Looper.loop(Looper.java:137) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.main(ActivityThread.java:4745) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at java.lang.reflect.Method.invokeNative(Native Method) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at java.lang.reflect.Method.invoke(Method.java:511) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at dalvik.system.NativeStart.main(Native Method) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: Caused by: java.lang.NullPointerException 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.orhanobut.hawk.Hawk.get(Hawk.java:128) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.orhanobut.hawk.Hawk.get(Hawk.java:151) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.myapp.preference.Configuration.getString(Configuration.java:49) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.myapp.preference.Configuration.getAuthEmail(Configuration.java:121) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at com.myapp.activity.SplashActivity.onCreate(SplashActivity.java:76) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.Activity.performCreate(Activity.java:5008) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 09-14 14:42:24.040 5425-5425/com.myapp W/System.err: ... 19 more 09-14 14:42:24.052 5425-5425/com.myapp W/Hawk: key is generating without password 09-14 14:42:24.052 5425-5425/com.myapp W/Hawk: key is generated without password

[orhanobut]

How do you init Hawk? Could be something else

[emce]

public void onCreate() {
        super.onCreate();
        Hawk.init(this)
            .setEncryptionMethod(HawkBuilder.EncryptionMethod.MEDIUM)
            .setStorage(HawkBuilder.newSharedPrefStorage(this))
            .setLogLevel(BuildConfig.DEBUG ? LogLevel.FULL : LogLevel.NONE)
            .setCallback(new HawkBuilder.Callback() {
                @Override
                public void onSuccess() {
                    Log.d(TAG, "Hawk initiated on App");
                }
                @Override
                public void onFail(Exception e) {
                    Log.d(TAG, "Hawk not initiated on App");
                }
            })
            .build();
        CalligraphyConfig.initDefault(new CalligraphyConfig.Builder()
            .setDefaultFontPath("Roboto/Roboto-Regular.ttf")
            .setFontAttrId(R.attr.fontPath)
            .build());
        Iconify
            .with(new IcomoonModule())
            .with(new FontAwesomeModule());
        if (!BuildConfig.DEBUG) {
            CrashlyticsFacade.initCrashlytics(this);
        }
        startCatcher();
    }

[orhanobut]

The issue seems that Hawk is called before initializing is actually finished due to callback. To make sure it can you remove callback line and try it? If the callback is required due to performance reason, we could find a better solution.

[emce]

You were right - after removing callback I didn't get any NPE so far...

[orhanobut]

glad to hear that, closing this issue.