Android : Android - Google Analytics V4 Exception

So, I followed this ( http://java.dzone.com/articles/working-google-analytics-api ) tutorial to add Google Analytics v4 to my application but after everything that is there when I try to run it i get an error that looks like this:

09-13 12:52:01.122  31624-31624/com.rivert.unlockscope E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.rivert.unlockscope, PID: 31624
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.rivert.unlockscope/com.rivert.unlockscope.unlockscope}: java.lang.ClassCastException: android.app.Application cannot be cast to com.rivert.unlockscope.MyApplication
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2187)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2236)
        at android.app.ActivityThread.access$800(ActivityThread.java:138)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1199)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5034)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:611)
        at dalvik.system.NativeStart.main(Native Method)
 Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to com.rivert.unlockscope.MyApplication
        at com.rivert.unlockscope.unlockscope.onCreate(unlockscope.java:37)
        at android.app.Activity.performCreate(Activity.java:5241)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2151)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2236)
        at android.app.ActivityThread.access$800(ActivityThread.java:138)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1199)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5034)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:611)
        at dalvik.system.NativeStart.main(Native Method)
        09-13 12:52:02.594  31624-31624/com.rivert.unlockscope I/Process﹕ Sending signal. PID: 31624 SIG: 9

My code from line 37 is:

((MyApplication) getApplication()).getTracker(MyApplication.TrackerName.APP_TRACKER);

Can anyone help me? Thanks