FILE MainActivity.java CODE TO STORE THE BUTTON MENU AND MOVE THE PAGE

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APPENDIX

FILE MainActivity.java

CODE TO STORE THE BUTTON MENU AND MOVE THE PAGE

package com.ste.sembakoapp; import Android.content.Intent;

import Android.support.v7.app.AppCompatActivity; import Android.os.Bundle;

import Android.view.View; import Android.widget.Button;

public class MainActivity extends AppCompatActivity { private Button btn1,btn2,btn3;

@Override

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main); btn1 = (Button) findViewById(R.id.menu1); btn2 = (Button) findViewById(R.id.menu2); btn3 = (Button) findViewById(R.id.menu3);

btn1.setOnClickListener(new View.OnClickListener() { @Override

public void onClick(View v) {

startActivity(new Intent(MainActivity.this, display.class));

} });

startActivity(new Intent(MainActivity.this, DetailActivity.class));

} });

startActivity(new Intent(MainActivity.this, AboutActivity.class));

} }); }

}

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FILE Display.java

CODE TO TAKE DATA ON MINISTRY OF TRADE WEBSITE AND

DISPLAY ALL PRICES

package com.ste.sembakoapp;

import Android.view.View;

import Android.widget.ArrayAdapter; import Android.widget.Button;

import Android.widget.Spinner; import Android.widget.TextView; import org.jsoup.Jsoup;

import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import java.io.IOException;

public class display extends AppCompatActivity { private Button getBtn;

private TextView result;

private Spinner spinner,spinner2; @Override

setContentView(R.layout.activity_display);

result = (TextView) findViewById(R.id.result); getBtn = (Button) findViewById(R.id.getBtn);

spinner = (Spinner) findViewById(R.id.tahun_spinner); ArrayAdapter<CharSequence> adapter =

ArrayAdapter.createFromResource(this, R.array.tahun_array, Android.R.layout.simple_spinner_item);

adapter.setDropDownViewResource(Android.R.layout.simple_spinner_d ropdown_item);

spinner.setAdapter(adapter);

spinner2 = (Spinner) findViewById(R.id.bulan_spinner); ArrayAdapter<CharSequence> adapter2 =

ArrayAdapter.createFromResource(this, R.array.bulan_array, Android.R.layout.simple_spinner_item);

adapter2.setDropDownViewResource(Android.R.layout.simple_spinner_ dropdown_item);

spinner2.setAdapter(adapter2);

getBtn.setOnClickListener(new View.OnClickListener() { @Override

final StringBuilder url = new StringBuilder(); final StringBuilder period = new StringBuilder(); String tahun = spinner.getSelectedItem().toString();

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int bulan_pos = spinner2.getSelectedItemPosition();

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}

node node = new node(nama, arrHarga, tanggal);

listData.addLast(node); }

Statistic stat = new Statistic();

node pointer = listData.getHead();

while (pointer != null) { builder.append("Name : ").append(pointer.getNama()).append("\n");

builder.append("Period : ").append(periode).append("\n");

builder.append("Prices").append("\n");

float[] h = pointer.getHarga(); int[] t = pointer.getTanggal(); for(int a=0; a<h.length; a++){ builder.append("Date : ").append(t[a]);

if (t[a] < 10){

builder.append(" | "); }else{

builder.append(" | "); }

builder.append("Price : ").append(h[a]).append("\n");

}

builder.append("\n");

builder.append("Statistics").append("\n"); float meanVal = stat.mean(h);

double medVal = stat.median(h); float modeVal = stat.mode(h); builder.append("Mean = ").append(meanVal).append("\n");

builder.append("Median = ").append(medVal).append("\n");

builder.append("Mode = ").append(modeVal).append("\n");

pointer = pointer.getNext();

builder.append("\n").append("\n"); }

} catch (IOException e) {

builder.append("Error :").append(e.getMessage()).append("\n");

}

runOnUiThread(new Runnable() { @Override

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public void run() {

result.setText(builder.toString()); }

}); }

}).start(); }

}

FILE DetailActivity.java

CODE TO DISPLAY THE DATA BASIC COMMODITIES ACCORDANCE

WITH ITEMS SELECTED AND DISPLAY THE GRAPH OF

STATISTICAL CALCULATIONS

package com.ste.sembakoapp; import Android.graphics.Color; import Android.os.Bundle;

import Android.support.v7.app.AppCompatActivity; import Android.view.View;

import Android.widget.ArrayAdapter; import Android.widget.Button;

import Android.widget.Spinner; import Android.widget.TextView; import Android.widget.Toast;

import com.jjoe64.graphview.GraphView;

import com.jjoe64.graphview.GridLabelRenderer; import com.jjoe64.graphview.LegendRenderer; import com.jjoe64.graphview.series.DataPoint;

import com.jjoe64.graphview.series.DataPointInterface; import com.jjoe64.graphview.series.LineGraphSeries;

import com.jjoe64.graphview.series.OnDataPointTapListener; import com.jjoe64.graphview.series.Series;

import org.jsoup.Jsoup;

import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import java.io.IOException;

import java.util.Random;

public class DetailActivity extends AppCompatActivity { private Button getBtn;

private TextView result;

private Spinner spinner,spinner2,spinner3; private LineGraphSeries<DataPoint> mSeries1; @Override

setContentView(R.layout.activity_detail); result = (TextView) findViewById(R.id.result); getBtn = (Button) findViewById(R.id.getBtn);

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spinner = (Spinner) findViewById(R.id.tahun_spinner); ArrayAdapter<CharSequence> adapter =

ArrayAdapter.createFromResource(this, R.array.tahun_array,

Android.R.layout.simple_spinner_item);

adapter.setDropDownViewResource(Android.R.layout.simple_spinner_d ropdown_item);

spinner.setAdapter(adapter);

spinner2 = (Spinner) findViewById(R.id.bulan_spinner); ArrayAdapter<CharSequence> adapter2 =

ArrayAdapter.createFromResource(this, R.array.bulan_array,

Android.R.layout.simple_spinner_item);

spinner3 = (Spinner) findViewById(R.id.item_spinner); ArrayAdapter<CharSequence> adapter3 =

ArrayAdapter.createFromResource(this, R.array.item_array, Android.R.layout.simple_spinner_dropdown_item);

getBtn.setOnClickListener(new View.OnClickListener() { @Override

final StringBuilder url = new StringBuilder(); final StringBuilder period = new StringBuilder();

String tahun =

spinner.getSelectedItem().toString(); int bulan_pos = spinner2.getSelectedItemPosition();

int item_pos = spinner3.getSelectedItemPosition(); String item_name =

spinner3.getSelectedItem().toString();

String bulan = String.valueOf(bulan_pos+1); String str_bulan =

spinner2.getSelectedItem().toString(); String URL =

url.append("http://www.kemendag.go.id/id/economic-profile/prices/national-price-table?

year=").append(tahun).append("&month=").append(bulan).toString(); String periode =

period.append(str_bulan).append("-").append(tahun).toString();

getWebsite(URL,periode,item_pos, item_name); }

});

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}

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runOnUiThread(new Runnable() { @Override

public void run() {

result.setText(builder.toString());

GraphView graph = (GraphView) findViewById(R.id.graph);

GridLabelRenderer gridlabel = graph.getGridLabelRenderer();

gridlabel.setHorizontalAxisTitle("Dates : "+periode);

gridlabel.setVerticalAxisTitle("Prices (Rupiah)");

graph.addSeries(mSeries1); graph.getViewport().setXAxisBoundsManual(true);

graph.getLegendRenderer().setVisible(true);

graph.getLegendRenderer().setAlign(LegendRenderer.LegendAlign.TOP) ;

graph.getViewport().setScalable(true); graph.getViewport().setScrollableY(true); graph.getViewport().setScalable(true); graph.getViewport().setScalableY(true); }

}); }

}).start(); }

}

FILE AboutActivity.java

CODE TO DISPLAY PROJECT INFORMATION

package com.ste.sembakoapp;

public class AboutActivity extends AppCompatActivity { @Override

setContentView(R.layout.activity_about); }

}

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FILE Node.java

CODE TO STORE ITEM DATA IN A NODE TO BE INSERTED INTO

LINKED LIST

package com.ste.sembakoapp; public class node {

private String nama; private float[] harga; private int[] tanggal; private node next; private node prev;

public node(String nama, float[] harga, int[] tanggal) { this.nama = nama;

this.harga = harga; this.tanggal = tanggal; this.next = null;

this.prev = null; }

public node(node E, node next, node prev) { this.nama = E.getNama();

this.harga = E.getHarga(); this.tanggal = E.getTanggal(); this.next = next;

this.prev = prev; }

public String getNama() { return this.nama; }

public float[] getHarga() { return this.harga; }

public int[] getTanggal() { return this.tanggal; }

public node getNext() { return next;

}

public node getPrev() { return prev;

}

public void setNext(node next) { this.next = next;

}

public void setPrev(node prev) { this.prev = prev;

} }

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FILE LinkedListImpl.java

CODE TO STORE DATA INTO LINKED LIST

package com.ste.sembakoapp; public class LinkedListImpl { private node head;

private node tail; private int size;

public LinkedListImpl() { size = 0;

}

public int size() { return size; }

public boolean isEmpty() { return size == 0; }

public node getHead() { return head;

}

public node get(int i) { if (i < size) {

node pointer = head; int position = 1;

while (position <= i) {

pointer = pointer.getNext(); position++;

}

return pointer; } else {

return null; }

}

public void addFirst(node E) { if (size == 0) {

head = new node(E, null, null); tail = head;

size++; } else {

head.setPrev(E); E.setNext(head); head = E;

size++; }

}

public void addLast(node E) { if (size == 0) {

tail = new node(E, null, null); head = tail;

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FILE Statistic.java

CODE TO CALCULATE STATISTICS (MEAN, MEDIAN, MODE) ON

DATA

package com.ste.sembakoapp; import java.util.Arrays; public class Statistic {

public static float mean(float[] m) { float sum = 0;

for (int i = 0; i < m.length; i++) { sum += m[i];

}

return sum / m.length; }

public static double median(float[] m) { int middle = m.length/2;

Arrays.sort(m);

if (m.length%2 == 1) { return m[middle]; } else {

return (m[middle-1] + m[middle]) / 2.0; }

}

public static float mode(float a[]) { float maxValue=0;

float maxCount=0;

for (int i = 0; i < a.length; ++i) { int count = 0;

for (int j = 0; j < a.length; ++j) { if (a[j] == a[i]) ++count;

}

if (count > maxCount) { maxCount = count; maxValue = a[i]; }

}

return maxValue; }

}

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FILE activity_about.xml

CODE FOR ABOUT DISPLAY ACTIVITY

<?xml version="1.0" encoding="utf-8"?>

<_{RelativeLayout}

xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"

_{android:layout_width=}_{"match_parent"} _{android:layout_height=}_{"match_parent"}

android:paddingBottom="@dimen/activity_vertical_margin" _{android:paddingLeft=}_{"@dimen/activity_horizontal_margin"} _{android:paddingRight=}_{"@dimen/activity_horizontal_margin"} _{android:paddingTop=}_{"@dimen/activity_vertical_margin"} _{tools:context=}_{"com.ste.sembakoapp.AboutActivity"}> <_TextView

_android_{:layout_width=}_{"wrap_content"} android:layout_height="wrap_content"

_android_{:textAppearance=}_{"?android:attr/textAppearanceLarge"} _android_:text=_"About"

android:id="@+id/textView2" _{android:layout_marginTop=}_"42dp" _{android:layout_alignParentTop=}_"true" _{android:layout_centerHorizontal=}_"true"/> <_TextView

_{android:layout_width=}_{"wrap_content"} _{android:layout_height=}_{"wrap_content"}

android:textAppearance="?android:attr/textAppearanceMedium" _{android:text=}_{"Purpose of the application is for monitoring basic} commodities price from Ministry of Trades Website"

android:id="@+id/textView3" _{android:layout_marginTop=}_"36dp" _{android:layout_below=}_{"@+id/textView2"} _{android:layout_centerHorizontal=}_"true"/> <_TextView

_{android:layout_width=}_{"wrap_content"} _{android:layout_height=}_{"wrap_content"}

android:textAppearance="?android:attr/textAppearanceMedium" _{android:text=}_{"Created By : Stefani Yuanita"}

_android:id=_{"@+id/textView4"}

android:layout_below="@+id/textView3" _{android:layout_centerHorizontal=}_"true" _{android:layout_marginTop=}_"35dp"/> </_{RelativeLayout}>

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FILE activity_detail.xml

_{android:fillViewport="true"}>

xmlns:android="http://schemas.android.com/apk/res/android"

_{xmlns:tools="http://schemas.android.com/tools"}

_{android:layout_width="match_parent"}

_{android:layout_height="match_parent"}

_{android:paddingBottom="@dimen/activity_vertical_margin"}

_{android:paddingLeft="@dimen/activity_horizontal_margin"}

_{android:paddingRight="@dimen/activity_horizontal_margin"}

_{android:paddingTop="@dimen/activity_vertical_margin"}

_{tools:context="com.ste.sembakoapp.DetailActivity"}>

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_{android:text=""}

_{android:textSize="17sp"}

_{android:layout_marginTop="57dp"}

_{android:layout_below="@+id/getBtn"}

_{android:layout_centerHorizontal="true"}/>

<_{com.jjoe64.graphview.GraphView}

_{android:layout_height="200dip"}

_{android:layout_below="@id/result"}

_{android:id="@+id/graph"}/>

</_{RelativeLayout}> </_ScrollView>

FILE activity_display.xml

CODE FOR ABOUT DISPLAY ACTIVITY

<?xml version="1.0" encoding="utf-8"?>

<ScrollView

xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"

_{android:layout_height="match_parent"} _{android:fillViewport="true"}>

xmlns:android="http://schemas.android.com/apk/res/android"

_{xmlns:tools="http://schemas.android.com/tools"}

_{android:layout_height="match_parent"}

_{android:paddingBottom="@dimen/activity_vertical_margin"}

_{android:paddingLeft="@dimen/activity_horizontal_margin"}

_{android:paddingRight="@dimen/activity_horizontal_margin"}

_{android:paddingTop="@dimen/activity_vertical_margin"}

_{tools:context="com.ste.sembakoapp.display"}>

<_Spinner

_{android:id="@+id/tahun_spinner"}

_{android:layout_width="fill_parent"}

_{android:layout_height="wrap_content"}/>

<_Spinner

_{android:id="@+id/bulan_spinner"}

_{android:layout_width="fill_parent"}

_{android:layout_height="wrap_content"}

_{android:layout_below="@+id/tahun_spinner"}

_{android:layout_alignParentRight="true"}

_{android:layout_alignParentEnd="true"}/>

<_Button

_{android:id="@+id/getBtn"}

_{android:layout_width="wrap_content"}

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_{android:text="Get Data"}

_{android:layout_below="@+id/bulan_spinner"}

<_TextView

_{android:id="@+id/result"}

_{android:text="Result..."}

_{android:textSize="17sp"}

_{android:layout_below="@+id/getBtn"}

_{android:layout_centerHorizontal="true"}

_{android:layout_marginTop="27dp"}/>

</_{RelativeLayout}> </_ScrollView>

FILE activity_main.xml

CODE FOR ABOUT MAIN ACTIVITY

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/android" _{xmlns:tools="http://schemas.android.com/tools"}

_{android:layout_width="match_parent"} _{android:layout_height="match_parent"}

_{android:paddingBottom="@dimen/activity_vertical_margin"} _{android:paddingLeft="@dimen/activity_horizontal_margin"} _{android:paddingRight="@dimen/activity_horizontal_margin"} _{android:paddingTop="@dimen/activity_vertical_margin"} _{tools:context="com.ste.sembakoapp.MainActivity"}> <_Button

_{android:text="Price Monitoring"}

_{android:id="@+id/menu1"}

_{android:layout_alignParentTop="true"}

<_Button

_{android:text="Detail Item"}

_{android:layout_below="@+id/menu1"}

_{android:layout_alignRight="@+id/menu1"}

_{android:layout_alignEnd="@+id/menu1"}

_{android:layout_alignLeft="@+id/menu1"}

_{android:layout_alignStart="@+id/menu1"}/>

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<_Button

_{android:text="About"}

_{android:layout_centerVertical="true"}

_{android:layout_alignLeft="@+id/menu2"}

_{android:layout_alignStart="@+id/menu2"}

_{android:layout_alignRight="@+id/menu2"}

_{android:layout_alignEnd="@+id/menu2"}/>

</_{RelativeLayout}>

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