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LA Aspiring developer Posts: 3280 Reg: Aug 16, 2012 Jerseyville, IL 42,900	confirm \| cancel 11/09/12 05:07 PM (13 years ago) After Button Click I followed David @Buzztouch video on the buttons and onCreate. I created a new screen called Contact..it loaded the home screen then when I click on the Contact screen it crashes and received this in logcat: 11-09 17:57:54.334: E/AndroidRuntime(622): FATAL EXCEPTION: main 11-09 17:57:54.334: E/AndroidRuntime(622): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.johnson/com.johnson.Contact}: java.lang.NullPointerException 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.os.Handler.dispatchMessage(Handler.java:99) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.os.Looper.loop(Looper.java:123) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.main(ActivityThread.java:4627) 11-09 17:57:54.334: E/AndroidRuntime(622): at java.lang.reflect.Method.invokeNative(Native Method) 11-09 17:57:54.334: E/AndroidRuntime(622): at java.lang.reflect.Method.invoke(Method.java:521) 11-09 17:57:54.334: E/AndroidRuntime(622): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 11-09 17:57:54.334: E/AndroidRuntime(622): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 11-09 17:57:54.334: E/AndroidRuntime(622): at dalvik.system.NativeStart.main(Native Method) 11-09 17:57:54.334: E/AndroidRuntime(622): Caused by: java.lang.NullPointerException 11-09 17:57:54.334: E/AndroidRuntime(622): at com.johnson.Contact.onCreate(Contact.java:67) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 11-09 17:57:54.334: E/AndroidRuntime(622): ... 11 more Thanks in advance. LA Title Comments I followed David @Buzztouch video on the buttons and onCreate. I created a new screen called Contact..it loaded the home screen then when I click on the Contact screen it crashes and received this in logcat: 11-09 17:57:54.334: E/AndroidRuntime(622): FATAL EXCEPTION: main 11-09 17:57:54.334: E/AndroidRuntime(622): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.johnson/com.johnson.Contact}: java.lang.NullPointerException 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.os.Handler.dispatchMessage(Handler.java:99) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.os.Looper.loop(Looper.java:123) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.main(ActivityThread.java:4627) 11-09 17:57:54.334: E/AndroidRuntime(622): at java.lang.reflect.Method.invokeNative(Native Method) 11-09 17:57:54.334: E/AndroidRuntime(622): at java.lang.reflect.Method.invoke(Method.java:521) 11-09 17:57:54.334: E/AndroidRuntime(622): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 11-09 17:57:54.334: E/AndroidRuntime(622): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 11-09 17:57:54.334: E/AndroidRuntime(622): at dalvik.system.NativeStart.main(Native Method) 11-09 17:57:54.334: E/AndroidRuntime(622): Caused by: java.lang.NullPointerException 11-09 17:57:54.334: E/AndroidRuntime(622): at com.johnson.Contact.onCreate(Contact.java:67) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 11-09 17:57:54.334: E/AndroidRuntime(622): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 11-09 17:57:54.334: E/AndroidRuntime(622): ... 11 more Thanks in advance. LA

GoNorthWest buzztouch Evangelist Posts: 8197 Reg: Jun 24, 2011 Oro Valley, AZ 1,000,000	11/09/12 07:11 PM (13 years ago) This may or may not help, but it's a good little tutorial on nullPointerExceptions. http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception This are often the hardest to debug. Mark Comments This may or may not help, but it's a good little tutorial on nullPointerExceptions. http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception This are often the hardest to debug. Mark

LA Aspiring developer Posts: 3280 Reg: Aug 16, 2012 Jerseyville, IL 42,900	11/10/12 07:08 AM (13 years ago) Yes very interesting and helpful. Thank you @GoNorthWest. LA Comments Yes very interesting and helpful. Thank you @GoNorthWest. LA

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