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mmoamenn / LuckyWheel_Android

A custom component that displays a lucky wheel. it ⁠ features easy customize of colors, addition of items and it's very trivial to integrate in your application.
MIT License
128 stars 55 forks source link

int android.graphics.Bitmap.getWidth()' on a null object reference #40

Open chejfj opened 1 year ago

chejfj commented 1 year ago

After adding the list, the following error occurred when starting this project： java.lang.NullPointerException: Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference at com.bluehomestudio.luckywheel.WheelView.drawImage(WheelView.java:133) at com.bluehomestudio.luckywheel.WheelView.onDraw(WheelView.java:245) at android.view.View.draw(View.java:21612) at android.view.View.updateDisplayListIfDirty(View.java:20481) at android.view.View.draw(View.java:21341) at android.view.ViewGroup.drawChild(ViewGroup.java:4417) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4177) at android.view.View.updateDisplayListIfDirty(View.java:20472) at android.view.View.draw(View.java:21341) at android.view.ViewGroup.drawChild(ViewGroup.java:4417) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4177) at android.view.View.updateDisplayListIfDirty(View.java:20472) at android.view.View.draw(View.java:21341) at android.view.ViewGroup.drawChild(ViewGroup.java:4417) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4177) at android.view.View.draw(View.java:21615) at android.view.View.updateDisplayListIfDirty(View.java:20481) at android.view.View.draw(View.java:21341) at android.view.ViewGroup.drawChild(ViewGroup.java:4417) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4177) at android.view.View.updateDisplayListIfDirty(View.java:20472) at android.view.View.draw(View.java:21341) at android.view.ViewGroup.drawChild(ViewGroup.java:4417) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4177) at android.view.View.updateDisplayListIfDirty(View.java:20472) at android.view.View.draw(View.java:21341) at android.view.ViewGroup.drawChild(ViewGroup.java:4417) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4177) at android.view.View.updateDisplayListIfDirty(View.java:20472) at android.view.View.draw(View.java:21341) at android.view.ViewGroup.drawChild(ViewGroup.java:4417) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4177) at android.view.View.updateDisplayListIfDirty(View.java:20472) at android.view.View.draw(View.java:21341) at android.view.ViewGroup.drawChild(ViewGroup.java:4417) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4177) at android.view.View.draw(View.java:21615) at com.android.internal.policy.DecorView.draw(DecorView.java:844) at android.view.View.updateDisplayListIfDirty(View.java:20481) at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:575) at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:581) at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:654) at android.view.ViewRootImpl.draw(ViewRootImpl.java:3735) at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:3530) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2867) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1820) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7782) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1031) at android.view.Choreographer.doCallbacks(Choreographer.java:854) at android.view.Choreographer.doFrame(Choreographer.java:789) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1016) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:224) at android.app.ActivityThread.main(ActivityThread.java:7562) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)

Android studio version:2021.2.1