Source Code Aplikasi Konversi Suhu dengan Java

Aplikasi Konversi Suhu dengan Java

SS Hasil akhir aplikasi yang dari emulator

Layout yang ada di android Studio

Coding XML

<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout   xmlns:android="http://schemas.android.com/apk/res/android"   xmlns:app="http://schemas.android.com/apk/res-auto"   xmlns:tools="http://schemas.android.com/tools"   android:layout_width="match_parent"   android:layout_height="match_parent"   tools:context=".Konversi">

   <LinearLayout       android:id="@+id/layout1"       android:layout_width="409dp"       android:layout_height="729dp"       android:orientation="vertical"       tools:layout_editor_absoluteX="1dp"       tools:layout_editor_absoluteY="1dp">
       <LinearLayout           android:layout_width="match_parent"           android:layout_height="wrap_content"           android:orientation="horizontal">
           <EditText               android:id="@+id/editText1"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:layout_weight="1"               android:hint="Masukkan suhu"               android:inputType="numberDecimal"/>
           <Spinner               android:id="@+id/spinner1"               android:layout_width="wrap_content"               android:layout_height="match_parent"/>
       </LinearLayout>
       <LinearLayout           android:layout_width="match_parent"           android:layout_height="wrap_content"           android:orientation="horizontal">
           <Button               android:id="@+id/button1"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:layout_weight="1"               android:text="Konversi" />
       </LinearLayout>
       <LinearLayout           android:layout_width="match_parent"           android:layout_height="wrap_content"           android:orientation="horizontal">
           <TextView               android:id="@+id/textViewCelcius"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:layout_marginLeft="40dp"               android:layout_weight="1"               android:text="Celcius :"               android:textColor="#000000"               android:textStyle="bold" />
           <EditText               android:id="@+id/editTextCelcius"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:ems="10"               android:hint="suhu celcius"               android:inputType="textPersonName" />       </LinearLayout>
       <LinearLayout           android:layout_width="match_parent"           android:layout_height="wrap_content"           android:orientation="horizontal">
           <TextView               android:id="@+id/textViewReamur"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:layout_marginLeft="40dp"               android:layout_weight="1"               android:text="Reamur :"               android:textColor="#000000"               android:textStyle="bold" />
           <EditText               android:id="@+id/editTextReamur"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:ems="10"               android:hint="suhu reamur"               android:inputType="textPersonName" />       </LinearLayout>
       <LinearLayout           android:layout_width="match_parent"           android:layout_height="wrap_content"           android:orientation="horizontal">
           <TextView               android:id="@+id/textViewFahrenheit"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:layout_marginLeft="40dp"               android:layout_weight="1"               android:text="Fahrenheit :"               android:textColor="#000000"               android:textStyle="bold" />
           <EditText               android:id="@+id/editTextFahrenheit"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:ems="10"               android:hint="suhu fahrenheit"               android:inputType="textPersonName" />       </LinearLayout>
       <LinearLayout           android:layout_width="match_parent"           android:layout_height="wrap_content"           android:orientation="horizontal">
           <TextView               android:id="@+id/textViewKelvin"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:layout_marginLeft="40dp"               android:layout_weight="1"               android:text="Kelvin :"               android:textColor="#000000"               android:textStyle="bold" />
           <EditText               android:id="@+id/editTextKelvin"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:ems="10"               android:hint="suhu kelvin"               android:inputType="textPersonName" />       </LinearLayout>
       <LinearLayout           android:layout_width="match_parent"           android:layout_height="wrap_content"           android:orientation="horizontal">
           <TextView               android:id="@+id/textViewRankine"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:layout_marginLeft="40dp"               android:layout_weight="1"               android:text="Rankine :"               android:textColor="#000000"               android:textStyle="bold" />
           <EditText               android:id="@+id/editTextRankine"               android:layout_width="wrap_content"               android:layout_height="wrap_content"               android:ems="10"               android:hint="suhu Rankine"               android:inputType="textPersonName" />       </LinearLayout>
   </LinearLayout>
</android.support.constraint.ConstraintLayout>

Coding Java

package com.ratix.konversisuhu;
import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.EditText;import android.widget.Spinner;import android.widget.Toast;
public class Konversi extends AppCompatActivity {
   private Spinner sp;   private EditText edt_awal, edt_C, edt_R, edt_F, edt_K, edt_Ra;   private String[] list={"C","R","F","K","Ra"};   Double awal, celcius, reamur, fahrenheit, kelvin, rankine;   ArrayAdapter adapter;   Button btnKonversi;
   @Override   protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_konversi);       sp=(Spinner) findViewById(R.id.spinner1);       edt_awal=(EditText) findViewById(R.id.editText1);       edt_C=(EditText) findViewById(R.id.editTextCelcius);       edt_R=(EditText) findViewById(R.id.editTextReamur);       edt_F=(EditText) findViewById(R.id.editTextFahrenheit);       edt_K=(EditText) findViewById(R.id.editTextKelvin);       edt_Ra=(EditText) findViewById(R.id.editTextRankine);       btnKonversi= (Button) findViewById(R.id.button1);
       adapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item, list);       adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);       sp.setAdapter(adapter);
       btnKonversi.setOnClickListener(new View.OnClickListener() {           @Override           public void onClick(View v){               String satuan = String.valueOf(sp.getSelectedItemPosition());               if (edt_awal.getText().toString().equals("")) {                   Toast.makeText(getBaseContext(), "Masukkan suhu awal, jika kosong maka nilai default adalah 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;                   rankine = (awal + 273.15)*1.8;
                   edt_C.setText(String.valueOf(celcius));                   edt_R.setText(String.valueOf(reamur));                   edt_F.setText(String.valueOf(fahrenheit));                   edt_K.setText(String.valueOf(kelvin));                   edt_Ra.setText(String.valueOf(rankine));               } else if (satuan.equals("1")) {                   celcius = 1.25 * awal;                   reamur = awal;                   fahrenheit = (2.25 * awal) + 32;                   kelvin = celcius + 273;                   rankine = (awal * 2.25) + 491.67;
                   edt_C.setText(String.valueOf(celcius));                   edt_R.setText(String.valueOf(reamur));                   edt_F.setText(String.valueOf(fahrenheit));                   edt_K.setText(String.valueOf(kelvin));                   edt_Ra.setText(String.valueOf(rankine));               } else if (satuan.equals("2")) {                   celcius = 0.55555 * (awal - 32);                   reamur = 0.44444 * (awal - 32);                   fahrenheit = awal;                   kelvin = celcius + 273;                   rankine = awal + 459.67;
                   edt_C.setText(String.valueOf(celcius));                   edt_R.setText(String.valueOf(reamur));                   edt_F.setText(String.valueOf(fahrenheit));                   edt_K.setText(String.valueOf(kelvin));                   edt_Ra.setText(String.valueOf(rankine));               } else if (satuan.equals("3")) {                   celcius = awal - 273;                   reamur = 0.8 * (awal - 273);                   fahrenheit = (1.8 * (awal - 273)) + 32;                   kelvin = awal;                   rankine = awal * 1.8;
                   edt_C.setText(String.valueOf(celcius));                   edt_R.setText(String.valueOf(reamur));                   edt_F.setText(String.valueOf(fahrenheit));                   edt_K.setText(String.valueOf(kelvin));                   edt_Ra.setText(String.valueOf(rankine));               }else if (satuan.equals("4")) {                   celcius = (awal - 491.67)*0.56;                   reamur = (awal / 1.8 + 273.15) * 0.8;                   fahrenheit = awal - 459.67;                   kelvin = awal - 0.56;                   reamur = 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));                   edt_Ra.setText(String.valueOf(rankine));               }
           }
       });
   }}

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