nstrikecs
06/07/15, 01:51:06
Hola estoy haciendo mi primera app y tengo un problema al intentar validar que se llenen los campos me topo con no saber realizar la validacion correctamente
intento realizar una calculadora del imc
dejo el codigo
package com.example.charbel.myapplication;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
EditText campopeso;
EditText campoaltura;
override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
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);
}
public void CalcularIMC(View view)
{
TextView IMC = (TextView) findViewById(R.id.IMC);
campopeso = (EditText) findViewById(R.id.campoPeso);
campoaltura = (EditText) findViewById(R.id.campoAltura);
String lecturaPeso = campopeso.getText().toString();
String lecturaAltura = campoaltura.getText().toString();
float peso = Float.parseFloat(lecturaPeso);
float altura = Float.parseFloat(lecturaAltura);
float imc = peso/(altura * altura);
IMC.setText(String.valueOf(imc));
}//fin metodo
}
intento realizar una calculadora del imc
dejo el codigo
package com.example.charbel.myapplication;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
EditText campopeso;
EditText campoaltura;
override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
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);
}
public void CalcularIMC(View view)
{
TextView IMC = (TextView) findViewById(R.id.IMC);
campopeso = (EditText) findViewById(R.id.campoPeso);
campoaltura = (EditText) findViewById(R.id.campoAltura);
String lecturaPeso = campopeso.getText().toString();
String lecturaAltura = campoaltura.getText().toString();
float peso = Float.parseFloat(lecturaPeso);
float altura = Float.parseFloat(lecturaAltura);
float imc = peso/(altura * altura);
IMC.setText(String.valueOf(imc));
}//fin metodo
}