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- package atiivdade2.calcularoleo;
- import android.content.Intent;
- import android.os.Bundle;
- import android.support.v7.app.AppCompatActivity;
- import android.view.View;
- import android.widget.Button;
- import android.widget.EditText;
- import android.widget.Toast;
- public class MainActivity extends AppCompatActivity implements View.OnClickListener {
- //Objetos
- EditText etProporcao, etGasolina;
- Button btConsultar, btCalcular;
- double resultado;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- //Listeners (Escutando e recupedando dados do Active View)
- etProporcao = (EditText) findViewById(R.id.edtProporcao);
- etGasolina = (EditText) findViewById(R.id.edtGasolina);
- btCalcular = (Button) findViewById(R.id.btnCalcular);
- btConsultar = (Button) findViewById(R.id.btnConsultar);
- btCalcular.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View v) {
- //String Proporcao = "40:20";
- String Proporcao = etProporcao.getText().toString();
- String partes[] = Proporcao.split(":");
- double p1 = Double.parseDouble(partes[0]);
- double p2 = Double.parseDouble(partes[1]);
- double gasolina = Double.parseDouble(etGasolina.getText().toString());
- double resultado = gasolina / (p1 / p2);
- String strResultado = Double.toString(resultado);
- //Exibindo o resulado
- Toast.makeText(MainActivity.this, "Quantidade de Óleo: " + strResultado, Toast.LENGTH_SHORT).show();
- }
- }) ;
- }
- //Evento ao Clicar Consultar
- // funcao pesquisar
- public void consultar(View c) {
- Intent i = new Intent(this, Main3Activity.class);
- startActivity(i);
- }
- @Override
- public void onClick(View v) {
- }
- //Evento ao Clicar em Calcular
- }
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