uuid - Unique Id for my android app -

i want create unique id android app server can identify device request has come , send messages app accordingly. read android_id not safe use unique identifier can compromised on rooted device. , manufacturer don't provide it.

is uuid safe use porpose ? globally unique id app ? if yes, planning store using keystore can keep until app uninstalls. right approach. please suggest.

its safe use uuid, helper function created uuid myself,keep in helper.java , call :

helper.getdeviceid(context);  

also don forget change string sharedprefdbname variable sharef db name, can store uuid in db or local file incase app uninstalled said.

//uuid static  string deviceid;  static string sharedprefdbname = "myappdb";  /**  * getdeviceid  * @param context  * @return string  */ public static string getdeviceid(context context){      //lets device id if not available, create , save     //means device id created once     //if deviceid not null, return     if(deviceid != null){         return deviceid;     }//end      //shared preferences     sharedpreferences sharedpref = context.getsharedpreferences(sharedprefdbname,context.mode_private);      //lets device id     deviceid = sharedpref.getstring("device_id",null);      //if saved device id null, lets create , save      if(deviceid == null) {          //generate new device id         deviceid = generateuniqueid();          //shared preference editor         sharedpreferences.editor sharedprefeditor = sharedpref.edit();          //save device id         sharedprefeditor.putstring("device_id",deviceid);          //commit         sharedprefeditor.commit();     }//end if device id null      //return     return deviceid; }//end device id   /**  * generateuniqueid - generate device id  * @return  */ public static string generateuniqueid() {      string id = uuid.randomuuid().tostring();      return id; }//end method