Fatal Exception: java.lang.NullPointerException: Attempt to read from field 'float com.lukedeighton.wheelview.Circle.mCenterX' on a null object reference at com.lukedeighton.wheelview.WheelView.drawWheel(WheelView.java:1217)

[Sudhansuu]

This issue comes when I just load the wheelView. The issue is not coming everytime but its coming. Please have a look at the complpete log of this :
Fatal Exception: java.lang.NullPointerException: Attempt to read from field 'float com.lukedeighton.wheelview.Circle.mCenterX' on a null object reference
at com.lukedeighton.wheelview.WheelView.drawWheel(WheelView.java:1217)
at com.lukedeighton.wheelview.WheelView.onDraw(WheelView.java:1206)
at android.view.View.draw(View.java:16217)
at android.view.View.draw(View.java:16129)
at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
at android.view.View.draw(View.java:16220)
at android.view.View.draw(View.java:16129)
at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
at android.view.View.draw(View.java:16127)
at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
at android.view.View.draw(View.java:16127)
at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
at android.view.View.draw(View.java:16127)
at android.view.ViewGroup.drawChild(ViewGroup.java:3610)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3400)
at android.view.View.draw(View.java:16220)
at com.android.internal.policy.PhoneWindow$DecorView.draw(PhoneWindow.java:2692)
at android.view.ViewRootImpl.drawSoftware(ViewRootImpl.java:2764)
at android.view.ViewRootImpl.draw(ViewRootImpl.java:2678)
at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2470)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2103)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1139)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6064)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:860)
at android.view.Choreographer.doCallbacks(Choreographer.java:672)
at android.view.Choreographer.doFrame(Choreographer.java:608)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:846)
at android.os.Handler.handleCallback(Handler.java:742)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5571)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635)