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- import android.support.v7.app.AppCompatActivity;
- import android.os.Bundle;
- import android.view.Menu;
- import android.view.MenuItem;
- import android.widget.Toast;
- public class MainActivity extends AppCompatActivity {
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- }
- //Método para mostrar y ocultar el menú
- public boolean onCreateOptionsMenu(Menu menu){
- getMenuInflater().inflate(R.menu.overflow, menu);
- return true;
- }
- //Método para asignar las funciones correspondientes a las opciones.
- public boolean onOptionsItemSelected(MenuItem item){
- int id = item.getItemId();
- if(id == R.id.item1){
- Toast.makeText(this, "Opción 1", Toast.LENGTH_SHORT).show();
- } else if(id == R.id.item2){
- Toast.makeText(this, "Opción 2", Toast.LENGTH_SHORT).show();
- }else if(id == R.id.item3){
- Toast.makeText(this, "Opción 3", Toast.LENGTH_SHORT).show();
- }
- return super.onOptionsItemSelected(item);
- }
- }
- 1- click en el menu Build
- 2- click en Clean Project
- 3- click en Build Project
- 1- click en el menu File
- 2- Invalidates Cache /restart
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