java - Android : SMSManager - Attempt to get length of null array -

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this question has answer here:

i have bug smsmanager when try send message method sendtextmesasge. returns me java.lang.nullpointerexception: attempt length of null array.

there code :

        // constructs message         telephonymanager mtelephonymgr = (telephonymanager) getsystemservice(context.telephony_service);              string myphonenumber = mtelephonymgr.getline1number();         string destnumber = taskmanager.gethelpcenternumber();         string message = getresources().getstring(r.string.call_me_message) + " " + myphonenumber+".";          // sends message         smsmanager smsmanager = smsmanager.getdefault();         smsmanager.sendtextmessage(destnumber, null, message, null, null);

the logcat receives message :

08-03 09:59:10.548: e/androidruntime(19825): fatal exception: main 08-03 09:59:10.548: e/androidruntime(19825): process: com.solarsquareretailer.view, pid: 19825 08-03 09:59:10.548: e/androidruntime(19825): java.lang.nullpointerexception: attempt length of null array 08-03 09:59:10.548: e/androidruntime(19825):    @ android.os.parcel.readexception(parcel.java:1546) 08-03 09:59:10.548: e/androidruntime(19825):    @ android.os.parcel.readexception(parcel.java:1493) 08-03 09:59:10.548: e/androidruntime(19825):    @ com.android.internal.telephony.isms$stub$proxy.sendtext(isms.java:1428) 08-03 09:59:10.548: e/androidruntime(19825):    @ android.telephony.smsmanager.sendtextmessage(smsmanager.java:305) 08-03 09:59:10.548: e/androidruntime(19825):    @ com.solarsquareretailer.view.mainactivity.onoptionsitemselected(mainactivity.java:245)

found destnumber null , not correct (not phone number). it's why have java.lang.nullpointerexception.


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