Java tutorial
/* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package edu.pdx.its.portal.routelandia; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.graphics.Paint; import android.os.Bundle; import android.support.v4.app.NavUtils; import android.support.v7.app.ActionBarActivity; import android.util.Log; import android.view.MenuItem; import android.view.Surface; import android.view.View; import android.view.WindowManager; import android.widget.Button; import org.achartengine.GraphicalView; import org.achartengine.chart.BarChart; import org.achartengine.model.XYSeries; import java.text.Format; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.GregorianCalendar; import org.achartengine.ChartFactory; import org.achartengine.GraphicalView; import org.achartengine.chart.PointStyle; import org.achartengine.model.SeriesSelection; import org.achartengine.model.TimeSeries; import org.achartengine.model.XYMultipleSeriesDataset; import org.achartengine.renderer.XYMultipleSeriesRenderer; import org.achartengine.renderer.XYSeriesRenderer; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.widget.LinearLayout; import android.widget.TableLayout; import android.widget.TableRow; import android.widget.TextView; import android.widget.Toast; import edu.pdx.its.portal.routelandia.entities.TrafficStat; import static android.graphics.Paint.Align.CENTER; public class ListStat extends ActionBarActivity { private GraphicalView mChart; protected ArrayList<TrafficStat> trafficStatList; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getSupportActionBar().setDisplayHomeAsUpEnabled(true); setContentView(R.layout.list_stats); trafficStatList = getIntent().getParcelableArrayListExtra("travel info"); for (int j = 0; j < trafficStatList.size(); j++) { Log.i("RESULT", trafficStatList.get(j).toString()); } float avgAccuracy = getAverageAccuracy(trafficStatList); if (avgAccuracy < 60) { Toast.makeText(ListStat.this, "Warning! Low Accuracy Percentage!", Toast.LENGTH_LONG).show(); } ((TextView) findViewById(R.id.tvPredictionAccuracy)).setText(avgAccuracy + "%"); double length = 0; if (trafficStatList.size() > 0) { length = trafficStatList.get(0).getDistance(); } ((TextView) findViewById(R.id.tvRouteLength)).setText(length + " miles"); if (getRotation(getBaseContext()) == 1 || getRotation(getBaseContext()) == 1) { if (trafficStatList.size() == 0) { Toast.makeText(ListStat.this, "please re pick 2 points", Toast.LENGTH_SHORT).show(); } else { openChart(); } } else { TableLayout tableLayout = (TableLayout) findViewById(R.id.tableLayout); int columns = 4; int rows = trafficStatList.size(); if (trafficStatList.size() == 0) { Toast.makeText(ListStat.this, "please re pick 2 points", Toast.LENGTH_SHORT).show(); } else { buildTable(rows, columns, trafficStatList, tableLayout); } } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { // Respond to the action bar's Up/Home button case android.R.id.home: this.onBackPressed(); return true; } return super.onOptionsItemSelected(item); } private void openChart() { XYSeries durationSeries = new XYSeries("Duration of travel"); int timeLength = trafficStatList.size(); for (int i = 0; i < timeLength; i++) { durationSeries.add((i + 1), trafficStatList.get(i).getTravelTime()); } XYSeries speedSeries = new XYSeries("Speed"); for (int i = 0; i < timeLength; i++) { speedSeries.add((i + 1), trafficStatList.get(i).getSpeed()); } //Collects all series and adds them under one object here called data XYMultipleSeriesDataset data = new XYMultipleSeriesDataset(); data.addSeries(durationSeries); data.addSeries(speedSeries); //Gives the Bar it's property XYSeriesRenderer durRenderer = new XYSeriesRenderer(); durRenderer.setColor(Color.GREEN); durRenderer.setDisplayChartValues(true); durRenderer.setChartValuesTextAlign(Paint.Align.CENTER); durRenderer.setChartValuesTextSize(15); XYSeriesRenderer speedRenderer = new XYSeriesRenderer(); speedRenderer.setColor(Color.CYAN); speedRenderer.setDisplayChartValues(true); speedRenderer.setChartValuesTextAlign(Paint.Align.CENTER); speedRenderer.setChartValuesTextSize(15); XYMultipleSeriesRenderer mRender = new XYMultipleSeriesRenderer(); mRender.setBarSpacing(1); mRender.addSeriesRenderer(durRenderer); mRender.addSeriesRenderer(speedRenderer); mRender.setChartTitle("Travel Time and Speed"); mRender.setXTitle("Departure Time"); mRender.setYTitle("Duration and Speed"); mRender.setZoomButtonsVisible(true); mRender.setLabelsTextSize(20); mRender.setLegendTextSize(15); mRender.setChartTitleTextSize(28); mRender.setAxisTitleTextSize(25); mRender.setXAxisMin(trafficStatList.get(1).getHour()); mRender.setXAxisMax(trafficStatList.size()); for (int i = 0; i < timeLength; i++) { mRender.addTextLabel(i + 1, String.valueOf( (int) trafficStatList.get(i).getHour() + ":" + (int) trafficStatList.get(i).getMinutes())); } mRender.setXLabelsAlign(CENTER); mRender.setXLabels(0); // Getting a reference to LinearLayout of the MainActivity Layout LinearLayout chartContainer = (LinearLayout) findViewById(R.id.chart_container); // Creating a Time Chart mChart = (GraphicalView) ChartFactory.getBarChartView(getBaseContext(), data, mRender, BarChart.Type.DEFAULT); //return intent; mRender.setClickEnabled(true); mRender.setSelectableBuffer(10); mChart.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { SeriesSelection seriesSelection = mChart.getCurrentSeriesAndPoint(); if (seriesSelection != null) { int seriesIndex = seriesSelection.getSeriesIndex(); String selectedSeries = "Duration"; if (seriesIndex == 0) selectedSeries = "Duration"; else selectedSeries = "Speed"; } } }); chartContainer.addView(mChart); } public int getRotation(Context context) { final int rotation = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay() .getOrientation(); switch (rotation) { case Surface.ROTATION_0: return 1; //portrait case Surface.ROTATION_90: return 0;//landscape case Surface.ROTATION_180: return 1;//reverse portrait default: return 0;//reverse landscape } } private void buildTable(int rows, int cols, ArrayList<TrafficStat> trafficStats, TableLayout tableLayout) { // outer for loop for (int i = -1; i < rows; i++) { TableRow row = new TableRow(this); row.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT)); if (i == -1) { for (int j = 0; j < cols; j++) { TextView tv = new TextView(this); tv.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT)); tv.setBackgroundResource(R.drawable.cell_shape); tv.setPadding(40, 40, 40, 40); tv.setTextColor(Color.BLACK); if (j == 0) { tv.setText("Time"); } else if (j == 1) { tv.setText("Speed"); } else if (j == 2) { tv.setText("Travel Time"); } else { tv.setText("Prediction Accuracy"); } row.addView(tv); } } else { // inner for loop for (int j = 0; j < cols; j++) { TextView tv = new TextView(this); tv.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT)); tv.setBackgroundResource(R.drawable.cell_shape); tv.setPadding(40, 40, 40, 40); tv.setTextColor(Color.BLACK); if (j == 0) { if (trafficStats.get(i).getMinutes() == 0) { tv.setText(trafficStats.get(i).getHour() + ":" + trafficStats.get(i).getMinutes() + trafficStats.get(i).getMinutes()); } else { tv.setText(trafficStats.get(i).getHour() + ":" + trafficStats.get(i).getMinutes()); } } else if (j == 1) { tv.setText(trafficStats.get(i).getSpeed() + " MPH"); } else if (j == 2) { tv.setText(trafficStats.get(i).getTravelTime() + " Min"); } else { tv.setText(trafficStats.get(i).getAccuracy() + "%"); } row.addView(tv); } } tableLayout.addView(row); } } /** * Take a list of traffic stats and get the average accuracy * * @param l The list to get avg accuracy for * @return float representing the average accuracy of this list */ private float getAverageAccuracy(ArrayList<TrafficStat> l) { float sum = 0; if (!l.isEmpty()) { for (TrafficStat ts : l) { sum += ts.getAccuracy(); } return sum / l.size(); } return 0; } }