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Command button to import text to textview from edittext using Scanner?
package one.two;

import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.Button;
import java.util.Scanner;
public class one extends Activity {
public static void main(String args[]){
    Scanner what = new Scanner(System.in);
    what.toString();

}
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
}

Button btn = findViewById(yourButtonId);
btn.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        EditText txt = findViewById(yourEditTextId);
        TextView txt1 = findViewById(yourTextViewId);
        txt.setText( txt.getText().toString() );
    }
});