System services not available to Activities before onCreate (), activitiesoncreate

System services not available to Activities before onCreate (), activitiesoncreate

System services not available to Activities before onCreate ()

Define the following variables in MainActivity and instantiate them.

LocationManager mgr = (LocationManager) getSystemService (Context. LOCATION_SERVICE );

This service must activate the system service .,

Solution: Put the instantiation of such variables into the OnCreate function of MainActivity.

 

07-19 04:09:45. 499: E/AndroidRuntime (5394): fatal exception: main
04:09:45-19. 499: E/AndroidRuntime (5394): java. lang. runtimeException: Unable to instantiate activity ComponentInfo {myApp.securitycore.com. comsecuritycoremyApp/myApp.securitycore.com. comsecuritycoremyApp. mainActivity}: java. lang. illegalStateException: System services not available to Activities before onCreate ()
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. app. ActivityThread. initialize mlaunchactivity (ActivityThread. java: 2106)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. app. ActivityThread. handleLaunchActivity (ActivityThread. java: 2230)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. app. ActivityThread. access $600 (ActivityThread. java: 141)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. app. ActivityThread $ H. handleMessage (ActivityThread. java: 1234)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. OS. Handler. dispatchMessage (Handler. java: 99)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. OS. Looper. loop (Looper. java: 137)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. app. ActivityThread. main (ActivityThread. java: 5041)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at java. lang. reflect. Method. invokeNative (Native Method)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at java. lang. reflect. Method. invoke (Method. java: 511)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at com. android. internal. OS. ZygoteInit $ MethodAndArgsCaller. run (ZygoteInit. java: 793)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at com. android. internal. OS. ZygoteInit. main (ZygoteInit. java: 560)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at dalvik. system. NativeStart. main (Native Method)
07-19 04:09:45. 499: E/AndroidRuntime (5394): Caused by: java. lang. IllegalStateException: System services not available to Activities before onCreate ()
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. app. Activity. getSystemService (Activity. java: 4463)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at myApp.securitycore.com. comsecuritycoremyApp. MainActivity. <init> (MainActivity. java: 75)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at java. lang. Class. newInstanceImpl (Native Method)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at java. lang. Class. newInstance (Class. java: 1319)
07-19 04:09:45. 499: E/AndroidRuntime (5394): at android. app. Instrumentation. newActivity (Instrumentation. java: 1054)