Android TelephonyManager doesn't work with android studio simulator? -

i using simple code retreive phone device data, reason time open app on emulator, pops message saying "unfortunately *app name* has closed" , shuts down app.

this code using:

telephonymanager tm=(telephonymanager)getsystemservice(context.telephony_service); string imeinumber=tm.getdeviceid(); 

i wrote code test telephonymanager methods nothing works except for: "getphonetype();"

any ideas what's problem? maybe because runing on android studio emulator?

the problem says: getdeviceid: neither user 10058 nor current process has android.permission.read_phone_state though added permission in manifest:

<uses-permission android:name="android.permission.read_phone_state" />

(above application part)

thank help

are running android m ? if , because it's not enough declare permissions in manifest. permissions, have explicitly ask user in run-time:

check link run time permission.

code snippet.

define globally in activity.

private static final int permission_request_code = 1; 

do stuff in oncreate.

// here, thisactivity current activity if (contextcompat.checkselfpermission(testingactivity.this,         manifest.permission.read_phone_state)         != packagemanager.permission_granted) {      // should show explanation?     if (activitycompat.shouldshowrequestpermissionrationale(testingactivity.this,             manifest.permission.read_phone_state)) {          // show expanation user *asynchronously* -- don't block         // thread waiting user's response! after user         // sees explanation, try again request permission.      } else {          // no explanation needed, can request permission.          activitycompat.requestpermissions(testingactivity.this,                 new string[]{manifest.permission.read_phone_state},                 permission_request_code);          // my_permissions_request_read_contacts         // app-defined int constant. callback method gets         // result of request.     } } 

finally overrride onrequestpermissionsresult.

@override public void onrequestpermissionsresult(int requestcode,                                        string permissions[], int[] grantresults) {     switch (requestcode) {         case permission_request_code: {             // if request cancelled, result arrays empty.             if (grantresults.length > 0                     && grantresults[0] == packagemanager.permission_granted) {                  // permission granted, yay!              } else {                  // permission denied, boo! disable                 // functionality depends on permission.             }             return;         }          // other 'case' lines check other         // permissions app might request     } }