application stop responding after splash screen

04-13 10:43:54.209 2421-2421/? I/art: Not late-enabling -Xcheck:jni (already on)
04-13 10:43:54.209 2421-2421/? W/art: Unexpected CPU variant for X86 using defaults: x86
04-13 10:43:54.915 2421-2428/? I/art: Debugger is no longer active
04-13 10:43:54.915 2421-2428/? I/art: Starting a blocking GC Instrumentation
04-13 10:43:55.006 2421-2421/? W/System: ClassLoader referenced unknown path: /data/app/com.ex.nishkarsh.nishkarsh-1/lib/x86
04-13 10:43:55.011 2421-2421/? I/InstantRun: Starting Instant Run Server for com.ex.nishkarsh.nishkarsh
04-13 10:43:55.648 2421-2421/com.ex.nishkarsh.nishkarsh W/art: Verification of java.lang.Object com.ex.nishkarsh.nishkarsh.SplashScreen.access$super(com.ex.nishkarsh.nishkarsh.SplashScreen, java.lang.String, java.lang.Object[]) took 621.457ms
04-13 10:43:56.329 2421-2428/com.ex.nishkarsh.nishkarsh W/art: Suspending all threads took: 343.364ms
04-13 10:43:57.192 2421-2428/com.ex.nishkarsh.nishkarsh W/art: Suspending all threads took: 89.283ms
04-13 10:43:57.220 2421-2421/com.ex.nishkarsh.nishkarsh W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
04-13 10:43:57.983 2421-2428/com.ex.nishkarsh.nishkarsh W/art: Suspending all threads took: 379.520ms
04-13 10:43:58.462 2421-2428/com.ex.nishkarsh.nishkarsh W/art: Suspending all threads took: 357.070ms
04-13 10:43:58.679 2421-2428/com.ex.nishkarsh.nishkarsh W/art: Suspending all threads took: 72.658ms
04-13 10:43:59.272 2421-2432/com.ex.nishkarsh.nishkarsh I/art: Background sticky concurrent mark sweep GC freed 3773(607KB) AllocSpace objects, 0(0B) LOS objects, 8% free, 3MB/4MB, paused 467.250ms total 555.171ms
04-13 10:43:59.331 2421-2509/com.ex.nishkarsh.nishkarsh I/OpenGLRenderer: Initialized EGL, version 1.4
04-13 10:43:59.331 2421-2509/com.ex.nishkarsh.nishkarsh D/OpenGLRenderer: Swap behavior 1
04-13 10:43:59.332 2421-2509/com.ex.nishkarsh.nishkarsh W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
04-13 10:43:59.332 2421-2509/com.ex.nishkarsh.nishkarsh D/OpenGLRenderer: Swap behavior 0
04-13 10:43:59.363 2421-2421/com.ex.nishkarsh.nishkarsh W/art: Before Android 4.1, method int android.support.v7.widget.ListViewCompat.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView
04-13 10:44:02.381 2421-2428/com.ex.nishkarsh.nishkarsh W/art: Suspending all threads took: 268.547ms
04-13 10:44:02.506 2421-2421/com.ex.nishkarsh.nishkarsh D/AndroidRuntime: Shutting down VM
04-13 10:44:02.506 2421-2421/com.ex.nishkarsh.nishkarsh E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ex.nishkarsh.nishkarsh, PID: 2421
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.ex.nishkarsh.nishkarsh/com.ex.nishkarsh.nishkarsh.MainActivity}: java.lang.InstantiationException: java.lang.Class has no zero argument constructor
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2567)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.InstantiationException: java.lang.Class has no zero argument constructor
at java.lang.Class.newInstance(Native Method)
at android.app.Instrumentation.newActivity(Instrumentation.java:1078)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2557)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6119) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 

i got these errors in my debug logcat.can anyone plz tell me wts the prblm actually i'm not able to identify.