Android Studio - U.D. Aplicaciones Móviles

1. IESTP “RAMON COPAJA”
Lic. Noé ARPASI JIMENEZ -1- U.D. “APLICACIONES MÓVILES”
PRACTICA DE LABORATORIO: Proyecto03 Convertir
RadioButton y Toast
1. Crear el LAYOUT (Diseño de la Aplicación Móvil)
2. MainActivity.java
package ga.gestionweb.proyecto03convertir;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
//Declarar los controles
EditText metros;
RadioGroup radiog;
Button convertir;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

2. IESTP “RAMON COPAJA”
Lic. Noé ARPASI JIMENEZ -2- U.D. “APLICACIONES MÓVILES”
//Enlazar controles
metros=(EditText)findViewById(R.id.txtmetros);
radiog=(RadioGroup)findViewById(R.id.radioGroup);
convertir=(Button)findViewById(R.id.btnconvertir);
convertir.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
double valor = 0;
String txtconvertir="";
if(radiog.getCheckedRadioButtonId()==R.id.rbtnpies){
valor=0.3048;
txtconvertir="Pies";
}else
if(radiog.getCheckedRadioButtonId()==R.id.rbtnpulgadas){
valor=0.0254;
txtconvertir="Pulgadas";
}else if
(radiog.getCheckedRadioButtonId()==R.id.rbtnkilometros){
valor=1000;
txtconvertir="Kilometros";
}
int
xmetros=Integer.parseInt(metros.getText().toString());
double total=xmetros/valor;
Toast.makeText(getApplicationContext(),"Metros a
convertir :"+xmetros+"nConvertido a:"+txtconvertir+"nTotal
:"+total,Toast.LENGTH_LONG).show();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it
is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}