Once again thanks for your quick response.
I tried the new library and now produces a different error:
** Activity (scanwifi) Create, isFirst = true **
** Activity (scanwifi) Resume **
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Enabled: true
java.lang.RuntimeException: Error receiving broadcast Intent { act=android.net.wifi.SCAN_RESULTS flg=0x4000010 } in
com.AB.ABWifi.ABWifi$2@4222b850
at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:782)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5603)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$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.AB.ABWifi.ABWifi$2.onReceive(ABWifi.java:236)
at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:772)
... 9 more