APPENDIX CODE TO STORE THE BUTTON MENU AND MOVE THE PAGE

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1 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; 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() { public void onclick(view v) { startactivity(new Intent(MainActivity.this, display.class)); ); btn2.setonclicklistener(new View.OnClickListener() { public void onclick(view v) { startactivity(new Intent(MainActivity.this, DetailActivity.class)); ); btn3.setonclicklistener(new View.OnClickListener() { public void onclick(view v) { startactivity(new Intent(MainActivity.this, AboutActivity.class)); ); A

2 FILE Display.java CODE TO TAKE DATA ON MINISTRY OF TRADE WEBSITE AND DISPLAY ALL PRICES package com.ste.sembakoapp; 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.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; protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); 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() { public void onclick(view v) { final StringBuilder url = new StringBuilder(); final StringBuilder period = new StringBuilder(); String tahun = spinner.getselecteditem().tostring(); B

3 int bulan_pos = spinner2.getselecteditemposition(); String bulan = String.valueOf(bulan_pos+1); String str_bulan = spinner2.getselecteditem().tostring(); String URL = url.append(" year=").append(tahun).append("&month=").append(bulan).tostring(); String periode = period.append(str_bulan).append("-").append(tahun).tostring(); getwebsite(url,periode); ); private void getwebsite(final String URL, final String periode){ new Thread(new Runnable() { public void run() { final StringBuilder builder = new StringBuilder(); try { Document doc = Jsoup.connect(URL).get(); Element table = doc.select("table").get(0); Elements rows = table.select("tr"); Element row_tanggal = rows.get(1); Elements tgl = row_tanggal.select("th"); int[] tanggal = new int[tgl.size()]; for (int j=0; j<tgl.size(); j++){ String gettgl=tgl.get(j).text(); tanggal[j]=integer.parseint(gettgl); builder.append("\n"); LinkedListImpl listdata = new LinkedListImpl(); for(int i=2; i<rows.size(); i++){ Element row = rows.get(i); Elements cols = row.select("td"); String nama = cols.get(1).text(); int numofharga= cols.size()-3; float[] arrharga = new float[numofharga]; int idx=0; for (int k=3; k<cols.size(); k++){ String harga = cols.get(k).text(); String harga_rep = harga.replaceall("[^a-za-z0-9]",""); float c = 0; if (!harga_rep.equals("")){ c = Float.parseFloat(harga_rep); else { c = 0; arrharga[idx]=c; idx++; C

4 tanggal); node node = new node(nama, arrharga, 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() { D

5 ); ).start(); public void run() { result.settext(builder.tostring()); 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; protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_detail); result = (TextView) findviewbyid(r.id.result); getbtn = (Button) findviewbyid(r.id.getbtn); E

6 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); spinner3 = (Spinner) findviewbyid(r.id.item_spinner); ArrayAdapter<CharSequence> adapter3 = ArrayAdapter.createFromResource(this, R.array.item_array, Android.R.layout.simple_spinner_dropdown_item); adapter3.setdropdownviewresource(android.r.layout.simple_spinner_ dropdown_item); spinner3.setadapter(adapter3); getbtn.setonclicklistener(new View.OnClickListener() { public void onclick(view v) { 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(" 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); F

7 private void getwebsite(final String URL, final String periode, final int item_position, final String item_name){ new Thread(new Runnable() { public void run() { final StringBuilder builder = new StringBuilder(); try { Document doc = Jsoup.connect(URL).get(); Element table = doc.select("table").get(0); Elements rows = table.select("tr"); Element row_tanggal = rows.get(1); Elements tgl = row_tanggal.select("th"); int[] tanggal = new int[tgl.size()]; for (int j=0; j<tgl.size(); j++){ String gettgl=tgl.get(j).text(); tanggal[j]=integer.parseint(gettgl); LinkedListImpl listdata = new LinkedListImpl(); for(int i=2; i<rows.size(); i++){ Element row = rows.get(i); Elements cols = row.select("td"); String nama = cols.get(1).text(); int numofharga= cols.size()-3; float[] arrharga = new float[numofharga]; int idx=0; for (int k=3; k<cols.size(); k++){ String harga = cols.get(k).text(); String harga_rep = harga.replaceall("[^a-za-z0-9]",""); float c = 0; if (!harga_rep.equals("")){ c = Float.parseFloat(harga_rep); else { c = 0; arrharga[idx]=c; idx++; tanggal); node node = new node(nama, arrharga, listdata.addlast(node); Statistic stat = new Statistic(); node pointer = listdata.get(item_position); builder.append("name : ").append(item_name).append("\n"); builder.append("period : ").append(periode).append("\n"); G

8 builder.append("prices").append("\n"); float[] h = pointer.getharga(); int[] t = pointer.gettanggal(); DataPoint[] values = new DataPoint[h.length]; for(int a=0; a<h.length; a++){ int x = t[a]; float y = h[a]; DataPoint v = new DataPoint(x, y); values[a] = v; builder.append("date : ").append(t[a]); if (t[a] < 10){ builder.append(" "); else{ builder.append(" "); builder.append("price : ").append(h[a]).append("\n"); Random rand = new Random(); int r = rand.nextint(255); int g = rand.nextint(255); int b = rand.nextint(255); int randomcolor = Color.rgb(r,g,b); mseries1 = new LineGraphSeries<>(values); mseries1.settitle(item_name); mseries1.setcolor(randomcolor); mseries1.setondatapointtaplistener(new OnDataPointTapListener() { public void ontap(series series, DataPointInterface datapoint) { Toast.makeText(DetailActivity.this, "Price : "+datapoint, Toast.LENGTH_SHORT).shown(); ); 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 \n"); builder.append("graph Data").append("\n"); catch (IOException e) { builder.append("error :").append(e.getmessage()).a ppend("\n"); H

9 runonuithread(new Runnable() { 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; import Android.support.v7.app.AppCompatActivity; import Android.os.Bundle; public class AboutActivity extends AppCompatActivity { protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_about); I

10 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; J

11 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; K

12 size++; else { tail.setnext(e); E.setPrev(tail); tail = E; size++; public void dellfirst() { if (size == 1) { head = null; tail = null; size--; else if (size > 1) { node del = head; head = head.getnext(); head.setprev(null); del.setnext(null); size--; public void delllast() { if (size == 1) { head = null; tail = null; size--; else if (size > 1) { node del = tail; tail = tail.getprev(); del.setprev(null); tail.setnext(null); size--; public void sethead(node head) { this.head = head; public node gettail() { return tail; public void settail(node tail) { this.tail = tail; public int getsize() { return size; public void setsize(int size) { this.size = size; L

13 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; M

14 FILE activity_about.xml CODE FOR ABOUT DISPLAY ACTIVITY <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.ste.sembakoapp.aboutactivity"> <TextView android:layout_width="wrap_content" android:textappearance="?android:attr/textappearancelarge" android:text="about" android:layout_margintop="42dp" android:layout_alignparenttop="true" android:layout_centerhorizontal="true" /> <TextView android:layout_width="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:layout_margintop="36dp" android:layout_centerhorizontal="true" /> <TextView android:layout_width="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> N

15 FILE activity_detail.xml CODE FOR ABOUT DETAIL ACTIVITY <?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android=" android:layout_width="match_parent" android:layout_height="match_parent" android:fillviewport="true"> <RelativeLayout xmlns:android=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.ste.sembakoapp.detailactivity"> <Spinner android:layout_width="fill_parent" /> <Spinner android:layout_width="fill_parent" android:layout_alignparentleft="true" android:layout_alignparentstart="true" android:layout_margintop="31dp" /> <Spinner android:layout_width="fill_parent" android:layout_alignparentright="true" android:layout_alignparentend="true" android:layout_margintop="33dp" /> <Button android:layout_width="wrap_content" android:text="get Data" android:layout_centerhorizontal="true" android:layout_margintop="41dp" /> <TextView android:layout_width="wrap_content" O

16 android:text="" android:textsize="17sp" android:layout_margintop="57dp" android:layout_centerhorizontal="true" /> <com.jjoe64.graphview.graphview android:layout_width="match_parent" android:layout_height="200dip" /> </RelativeLayout> </ScrollView> FILE activity_display.xml CODE FOR ABOUT DISPLAY ACTIVITY <?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android=" android:layout_width="match_parent" android:layout_height="match_parent" android:fillviewport="true"> <RelativeLayout xmlns:android=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.ste.sembakoapp.display"> <Spinner android:layout_width="fill_parent" /> <Spinner android:layout_width="fill_parent" android:layout_margintop="29dp" android:layout_alignparentright="true" android:layout_alignparentend="true" /> <Button android:layout_width="wrap_content" P

17 android:text="get Data" android:layout_centerhorizontal="true" /> <TextView android:layout_width="wrap_content" android:text="result..." android:textsize="17sp" 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=" xmlns:tools=" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.ste.sembakoapp.mainactivity"> <Button android:layout_width="wrap_content" android:text="price Monitoring" android:layout_margintop="56dp" android:layout_alignparenttop="true" android:layout_centerhorizontal="true" /> <Button android:layout_width="wrap_content" android:text="detail Item" android:layout_margintop="31dp" /> Q

18 <Button android:layout_width="wrap_content" android:text="about" android:layout_centervertical="true" /> </RelativeLayout> R

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EMBEDDED SYSTEMS PROGRAMMING Application Tip: Switching UIs

EMBEDDED SYSTEMS PROGRAMMING Application Tip: Switching UIs EMBEDDED SYSTEMS PROGRAMMING 2015-16 Application Tip: Switching UIs THE PROBLEM How to switch from one UI to another Each UI is associated with a distinct class that controls it Solution shown: two UIs,