android random number generator not random enough -

i made yahtzee game player rolls 5 dice , use random number generator determine dice values. dice seem random enough when run on emulator, reason when run on phones players keep getting same values many of dice: coincidence. instance, if 4 comes on 1 dice, comes on 3 or 4 other dice. makes hard find problem isn't consistent: throw normal. determine random numbers 5 dice using following code:

public void randomdize(){     int randspot;      for(int = 0; < 5; i++){         random randomgenerator = new random();         randspot = randomgenerator.nextint(6);         if(dieset[i]== 0){             dieval[i]=randspot;             imagebuttons[i].setbackgroundresource(imageres[randspot]);         }     }        } 

you instantiate random generator in loop, move outside:

private random randomgenerator = new random(); //or even: // private static random randomgenerator = new random(); public void randomdize(){     int randspot;      for(int = 0; < 5; i++){          randspot = randomgenerator.nextint(6);         if(dieset[i]== 0){             dieval[i]=randspot;             imagebuttons[i].setbackgroundresource(imageres[randspot]);         }     }        }