XML : My app is crashing when I launch a new activity?

So i am trying to launch my new activity but my app keeps crashing? My start up activity is called Startup. My main is called main

Here is my manifest code

  <application      android:allowBackup="true"      android:icon="@mipmap/ic_launcher"      android:label="@string/app_name"      android:supportsRtl="true"      android:theme="@style/AppTheme">      <activity android:name=".Startup">          <intent-filter>              <action android:name="android.intent.action.MAIN" />              <category android:name="android.intent.category.LAUNCHER" />          </intent-filter>      </activity>      <activity android:label="@string/app_name" android:name=".MainActivity"/>  </application>    

Here is my startup activity code

  public class Startup extends AppCompatActivity {    @Override  protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.activity_startup);  }    public void startgame(){      Intent startIntent = new Intent(Startup.this, MainActivity.class);      Startup.this.startActivity(startIntent);  }  }    

Here is my logcat

01-16 17:07:44.440 22048-22048/? I/art: Not late-enabling -Xcheck:jni (already on) 01-16 17:07:44.536 22048-22048/com.hitchhikingapps.griegvstwain W/System: ClassLoader referenced unknown path: /data/app/com.hitchhikingapps.griegvstwain-2/lib/x86 01-16 17:07:44.766 22048-22069/com.hitchhikingapps.griegvstwain D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true 01-16 17:07:44.842 22048-22069/com.hitchhikingapps.griegvstwain I/OpenGLRenderer: Initialized EGL, version 1.4 01-16 17:07:44.964 22048-22069/com.hitchhikingapps.griegvstwain W/EGL_emulation: eglSurfaceAttrib not implemented 01-16 17:07:44.964 22048-22069/com.hitchhikingapps.griegvstwain W/OpenGLRenderer: Failed to set EGL_SWAP_BEHAVIOR on surface 0xabe8b940, error=EGL_SUCCESS 01-16 17:07:46.582 22048-22048/com.hitchhikingapps.griegvstwain D/AndroidRuntime: Shutting down VM 01-16 17:07:46.582 22048-22048/com.hitchhikingapps.griegvstwain E/AndroidRuntime: FATAL EXCEPTION: main Process: com.hitchhikingapps.griegvstwain, PID: 22048 java.lang.IllegalStateException: Could not find method startgame(View) in a parent or ancestor Context for android:onClick attribute defined on view class android.support.v7.widget.AppCompatButton with id 'startButton' at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.resolveMethod(AppCompatViewInflater.java:307) at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:266) at android.view.View.performClick(View.java:5198) at android.view.View$PerformClick.run(View.java:21147) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 01-16 17:07:48.707 22048-22048/com.hitchhikingapps.griegvstwain I/Process: Sending signal. PID: 22048 SIG: 9

Any help would be appreciated. And btw startgame is the onclick method for a button