Answers for "@mention into the text box android"

android studio set text of textview

// globally 
TextView myAwesomeTextView = (TextView)findViewById(R.id.myAwesomeTextView);

//in your OnCreate() method
myAwesomeTextView.setText("My Awesome Text");

set textview text android java

//java,set textview text android studio,2021/09.23
TextView textView;

textView = findViewById(R.id.textView); //in your OnCreate() method
textView.setText("Hello World");