Question

I am trying to figure out how to send sms from my application. I have tried the following:

try { 
    String newNumber, newMessage;
    newNumber = number.getText().toString();
    newMessage = message.getText().toString();
    smsManager.getDefault();
    smsManager.sendTextMessage(newNumber, null, newMessage,null, null);

    } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
     }  
    }
}
    };thread.start();

But I get a log cat with this:

07-23 09:03:42.378: I/Process(14426): Sending signal. PID: 14426 SIG:
9 07-23 09:06:18.972: W/dalvikvm(14529): threadid=11: thread exiting
with uncaught exception (group=0x40a381f8) 07-23 09:06:18.972:
E/AndroidRuntime(14529): FATAL EXCEPTION: Thread-885 07-23
09:06:18.972: E/AndroidRuntime(14529): java.lang.NullPointerException
07-23 09:06:18.972: E/AndroidRuntime(14529): at
com.johnnydicamillo.sms.SmsSpammerActivity$1.run(SmsSpammerActivity.java:48)
07-23 09:06:19.238: W/IInputConnectionWrapper(14529): showStatusIcon
on inactive InputConnection 07-23 09:06:44.855: I/Process(14529):
Sending signal. PID: 14529 SIG: 9

Answer 1

It looks like smsManager may be null, getDefault() is a static method used to get the default instance of an SmsManager and it doesn’t show that you are setting anything. You probably want that line to be something like:

SmsManager smsManager = SmsManager.getDefault();