When you do:

textview.text = pString

What actually happens?

• TextView.text is a property backed by a CharSequence. When you assign textview.text = pString, Android calls TextView.setText(CharSequence) internally.

• pString is a String, which implements CharSequence. So setText(CharSequence) accepts it directly.

• Internally, the TextView stores the CharSequence reference you pass in, but it does not promise to keep a direct reference to the same String object forever — it wraps it in an internal Spannable or Editable if needed, depending on features like styling, input, etc.

Does it copy the string?

• For immutable plain Strings, Android does not immediately clone the character data. It stores the String reference (or wraps it in a SpannedString or SpannableString if needed).

• If you later modify the text (e.g., if the TextView is editable, or you apply spans), it may create a mutable copy internally (Editable) — but your original String (mystring) is immutable, so it can’t be changed.

In short:

• textview.text = pString does not copy the String characters immediately — it just passes the reference to TextView’s internal text storage.

• The String itself is immutable, so mystring stays the same.

• If the TextView needs to change the text (like user input in an EditText), it works on a mutable Editable copy internally.

  Therefore: No new copy of the string’s character data is created at assignment. Just the reference is stored/wrapped as needed.