package com.suhu_jr;

import android.os.Bundle;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.view.Menu;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.EditText;

import android.widget.Spinner;

import android.widget.Toast;



public class MainActivity extends Activity {



@Override

public boolean onCreateOptionsMenu(Menu menu) {

 // Inflate the menu; this adds items to the action bar if it is present.

 getMenuInflater().inflate(R.menu.main, menu);

 return true;

}

//Jika Tekan Tombol back

public void onBackPressed() {

  exit();//Pergi ke method exit

}

private void exit() {

 AlertDialog.Builder builder = new AlertDialog.Builder(this);

 builder.setMessage("Are You Sure Want to Exit?")

 .setCancelable(false)//tidak bisa tekan tombol back

 //jika pilih yess

 .setPositiveButton("Yes", new DialogInterface.OnClickListener() {

  public void onClick(DialogInterface dialog, int id) {

   finish();

  }

 })

 //jika pilih no

 .setNegativeButton("No", new DialogInterface.OnClickListener() {

  public void onClick(DialogInterface dialog, int id) {

   dialog.cancel();

  }

 }).show();



}

private Spinner sp;

 private EditText edt_awal, edt_C, edt_R, edt_F, edt_K;

 private String[] list={"C","R","F","K"};

 Double awal, celcius, reamur, fahrenheit, kelvin;

 ArrayAdapter<String> adapter;

@Override

 protected void onCreate(Bundle savedInstanceState) {

 super.onCreate(savedInstanceState);

 setContentView(R.layout.activity_main);

 sp=(Spinner) findViewById(R.id.spinner1);

 edt_awal=(EditText) findViewById(R.id.editText1);

 edt_C=(EditText) findViewById(R.id.editText2);

 edt_R=(EditText) findViewById(R.id.editText3);

 edt_F=(EditText) findViewById(R.id.editText4);

 edt_K=(EditText) findViewById(R.id.editText5);



 adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list);

 adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

 sp.setAdapter(adapter);

 }



 public void Konversi(View v){

 String satuan = String.valueOf(sp.getSelectedItemPosition());

 if(edt_awal.getText().toString().equals("")){

 Toast.makeText(getBaseContext(), "Masukkan suhu awal, default suhu awal = 0 ", Toast.LENGTH_LONG).show();

 awal = 0.0;

 }else{

 awal = Double.parseDouble(edt_awal.getText().toString());

 }

 if(satuan.equals("0")){

 celcius = awal;

 reamur = 0.8 * awal;

 fahrenheit = (1.8 * awal) + 32;

 kelvin = awal + 273;



 edt_C.setText(String.valueOf(celcius));

 edt_R.setText(String.valueOf(reamur));

 edt_F.setText(String.valueOf(fahrenheit));

 edt_K.setText(String.valueOf(kelvin));

 }else if(satuan.equals("1")){

 celcius = 1.25 * awal;

 reamur = awal;

 fahrenheit = (2.25 * awal) + 32;

 kelvin = celcius + 273;



 edt_C.setText(String.valueOf(celcius));

 edt_R.setText(String.valueOf(reamur));

 edt_F.setText(String.valueOf(fahrenheit));

 edt_K.setText(String.valueOf(kelvin));

 }else if(satuan.equals("2")){

 celcius = 0.55555 *(awal - 32);

 reamur = 0.44444 * (awal-32);

 fahrenheit = awal;

 kelvin = celcius + 273;



 edt_C.setText(String.valueOf(celcius));

 edt_R.setText(String.valueOf(reamur));

 edt_F.setText(String.valueOf(fahrenheit));

 edt_K.setText(String.valueOf(kelvin));

 }else if(satuan.equals("3")){

 celcius = awal-273;

 reamur = 0.8 * (awal-273);

 fahrenheit = (1.8 * (awal-273)) + 32;

 kelvin = awal;



 edt_C.setText(String.valueOf(celcius));

 edt_R.setText(String.valueOf(reamur));

 edt_F.setText(String.valueOf(fahrenheit));

 edt_K.setText(String.valueOf(kelvin));

 }

 }

}