Erreur Application Android: Unfortunately yourApplication has stop

Bonjour à tous :)

J'ai un problème avec l'application que je suis en train de développer et je ne sais pas comment le résoudre même après plusieurs recherches sur internet.
Lorsque je lance mon appli, la première activité s'affiche correctement. Une fois que je clique sur celle-ci qui devrait me faire passer à la deuxième activité, elle ne s'affiche pas et j'ai un message qui dit: <<Unfortunately yourApplication has stopped>>.
Si quelqu'un ici pouvait m'aider. Merci par avance.



Je vous met un copier-coller du logcat:

[ 07-14 09:14:06.779 3218: 3218 D/ ]
HostConnection::get() New Host Connection established 0xb42e0d00, tid 3218
07-14 09:14:06.780 3218-3218/com.prosign.prosignapplication D/Atlas: Validating map...
07-14 09:14:06.837 3218-3251/com.prosign.prosignapplication I/OpenGLRenderer: Initialized EGL, version 1.4
07-14 09:14:06.991 3218-3251/com.prosign.prosignapplication D/OpenGLRenderer: Enabling debug mode 0
07-14 09:14:07.000 3218-3251/com.prosign.prosignapplication W/EGL_emulation: eglSurfaceAttrib not implemented
07-14 09:14:07.001 3218-3251/com.prosign.prosignapplication W/OpenGLRenderer: Failed to set EGL_SWAP_BEHAVIOR on surface 0xae835660, error=EGL_SUCCESS
07-14 09:15:23.563 3218-3218/com.prosign.prosignapplication D/AndroidRuntime: Shutting down VM
07-14 09:15:23.563 3218-3218/com.prosign.prosignapplication E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.prosign.prosignapplication, PID: 3218
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.prosign.prosignapplication/com.prosign.prosignapplication.SecondActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2236)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
at android.support.v7.app.AppCompatDelegateImplBase.<init>(AppCompatDelegateImplBase.java:72)
at android.support.v7.app.AppCompatDelegateImplV7.<init>(AppCompatDelegateImplV7.java:146)
at android.support.v7.app.AppCompatDelegateImplV11.<init>(AppCompatDelegateImplV11.java:28)
at android.support.v7.app.AppCompatDelegateImplV14.<init>(AppCompatDelegateImplV14.java:41)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:193)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:173)
at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:511)
at android.support.v7.app.AppCompatActivity.findViewById(AppCompatActivity.java:183)
at com.prosign.prosignapplication.SecondActivity.<init>(SecondActivity.java:16)
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.Class.newInstance(Class.java:1606)
at android.app.Instrumentation.newActivity(Instrumentation.java:1066)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2226)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)*
at android.app.ActivityThread.access$800(ActivityThread.java:151)*
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)*
at android.os.Handler.dispatchMessage(Handler.java:102)*
at android.os.Looper.loop(Looper.java:135)*
at android.app.ActivityThread.main(ActivityThread.java:5254)*
at java.lang.reflect.Method.invoke(Native Method)*
at java.lang.reflect.Method.invoke(Method.java:372)*
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)*
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)*
07-14 09:15:27.230 3218-3218/com.prosign.prosignapplication I/Process: Sending signal. PID: 3218 SIG: 9