Controlling Servo with push button

I am making a project which requires a servo to turn 90 degrees by pushing a button, and then return to its original position after pushing the button again. I am unsure of how to get it to stay at one position between button presses. Any help would be greatly appreciated!

#include <Servo.h>  

const int button1Pin = 4;  
Servo servo1; 


void setup()
{
  pinMode(button1Pin, INPUT);
  servo1.attach(9);

        
}


void loop()
{
  int button1State;
  int position;

button1State = digitalRead(button1Pin);


if (button1State == LOW){
  {
    servo1.write(45); 
  }}
else {
    servo1.write(135);
}

}

Search in the forum search box in the upper right f this page for “servo toggle” and you might find similar previous discussions. Below is some toggle test code, but can’t remember how well it worked.

//zoomkat servo button toggle test 4-28-2012

#include <Servo.h>
int button = 5; //button pin, connect to ground to move servo
int press = 0;
Servo servo;
boolean toggle = true;

void setup()
{
  pinMode(button, INPUT); //arduino monitor pin state
  servo.attach(7); //pin for servo control signal
  digitalWrite(5, HIGH); //enable pullups to make pin high
}

void loop()
{
  press = digitalRead(button);
  if (press == LOW)
  {
    if(toggle)
    {
      servo.write(160);
      toggle = !toggle;
    }
    else
    {
      servo.write(20);
      toggle = !toggle;
    }
  }
  delay(500);  //delay for debounce
}

Thank you so much, that helped me so much!!!

How can I get this script to switch from one servo position to another and then return to the original spot?

obsean:
How can I get this script to switch from one servo position to another and then return to the original spot?

Simple button servo test code. Not sure just what you want.

//zoomkat servo button test 7-30-2011
//Powering a servo from the arduino usually *DOES NOT WORK*.

#include <Servo.h>
int button1 = 4; //button pin, connect to ground to move servo
int press1 = 0;
Servo servo1;

void setup()
{
  pinMode(button1, INPUT);
  servo1.attach(7);
  digitalWrite(4, HIGH); //enable pullups to make pin high
}

void loop()
{
  press1 = digitalRead(button1);
  if (press1 == LOW)
  {
    servo1.write(160);
  }
  else {
    servo1.write(20);
  }
}

do u have a wiring diagram?