package com.example.random ; import androidx.appcompat.app.AppCompatActivity ; import android.annotation. SuppressLint ; import android.content.Context ; import android.content.SharedPreferences ; import android.inputmethodservice.Keyboard ; import android.os.Bundle ; import android.view.View ; import android.widget.EditText ; import android.widget.TextView ; public class MainActivity extends AppCompatActivity { private TextView TbAcumulado , TbMensaje ; private EditText Et1 ; @SuppressLint ( "MissingInflatedId" ) @Override protected void onCreate (Bundle savedInstanceState) { super .onCreate(savedInstanceState) ; setContentView(R.layout. activity_main ) ; TbAcumulado = (TextView)findViewById(R.id. TbAcumulado ) ; TbMensaje = (TextView)findViewById(R.id. TbMensaje ) ; Et1 = (EditText)findViewById(R.id. Et1 ) ; SharedPreferences prefe = getSharedPreferences( "datos" , Context. MODE_PRIVATE ) ; //pr...