java.lang.RuntimeException

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    • java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.hema.testfacebooksdk/com.example.hema.testfacebooksdk.MainActivity}: java.lang.NullPointerException at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2471) at android.app.ActivityThread.access$900(ActivityThread.java:175) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1308) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:146) at android.app.ActivityThread.main(ActivityThread.java:5602) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.NullPointerException at com.facebook.login.LoginManager.getLogger(LoginManager.java:391) at com.facebook.login.LoginManager.logCompleteLogin(LoginManager.java:414) at com.facebook.login.LoginManager.startLogin(LoginManager.java:384) at com.facebook.login.LoginManager.logInWithReadPermissions(LoginManager.java:262) at com.example.hema.testfacebooksdk.MainActivity.onCreate(MainActivity.java:59) at android.app.Activity.performCreate(Activity.java:5451) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2377) ... 11 more

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