TUGAS ANDROID MOBILE PROGOMING MEMBUAT APLIKASI KONVERSI SUHU .APK SOURCE CODING # 2

BAB II

PEMBAHASAN

2.1  SOURCE CODING APLIKASI

package com.tugas.conpertsuhu;

import android.os.Bundle;

import android.app.Activity;

import android.content.Intent;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.CheckBox;

import android.widget.EditText;

import android.widget.Toast;

public class Login_suhu extends Activity implements OnClickListener{

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_login_suhu);

       

        findViewById(R.id.loginButton).setOnClickListener(this);

        findViewById(R.id.cancelButton).setOnClickListener(this);

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

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

        return true;

    }

       public void onClick(View v) {

              // TODO Auto-generated method stub

              switch (v.getId()){

              case R.id.loginButton:

                     EditText userNameEditText = (EditText) findViewById(R.id.usernameEditText);

                     EditText passwordEditText = (EditText) findViewById(R.id.passwordEditText);

                    

                     String userName = userNameEditText.getText().toString();

                     String password = passwordEditText.getText().toString();

                    

                     if (userName.equals("") || password.equals("")){

                           Toast.makeText(this, "User name dan password harus diisi", Toast.LENGTH_LONG).show();                     

                     } else {

                           if (userName.equalsIgnoreCase("ADI") && password.equalsIgnoreCase("ADI")){

                                  CheckBox simpanCheckBox = (CheckBox) findViewById(R.id.simpanCheckBox);

                                  if (!simpanCheckBox.isChecked()){

                                         userNameEditText.setText("");

                                         passwordEditText.setText("");

                                  }

                                 

                                  Intent loginSuccesIntent = new Intent(this,MainActivity.class);

                                 

                                  loginSuccesIntent.putExtra("username", userName);

                                 

                                  startActivity(loginSuccesIntent);

                           } else {

                                  Toast.makeText(this, "User name atau password salah", Toast.LENGTH_LONG).show();

                           }

                     }

                     break;

              case R.id.cancelButton:

                     System.exit(0);

              }

       }

}

a.      MainActivity.java

package com.tugas.conpertsuhu;

import android.os.Bundle;

import android.app.Activity;

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 {

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 jika tidak dimasukkan suhu awal", 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));

 }

 }

}

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