title: Android Activities Recreated
body: <p>I am pretty new on Android Studio and I want to start an activity without closing the previous one. I have made some researches and the way to open activity is made by using <strong>Intent class</strong> and <strong>startActivity(intent)</strong>, but in this way, the new page will be opened and if I want to go back to the previous one all the page will be fully recreated, and I want the previous page to remain at the same modifications.
  Can anybody help me with an advice ?</p>