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package com.example.testchart; | |
import java.util.*; | |
import java.io.*; | |
import java.text.DateFormat; | |
import android.os.Bundle; | |
import android.app.Activity; | |
import android.util.Log; | |
import android.view.*; | |
import android.widget.*; | |
import android.content.*; | |
import android.content.res.AssetManager; | |
import android.graphics.Color; | |
import android.graphics.Paint.Align; | |
import org.achartengine.*; | |
import org.achartengine.chart.*; | |
import org.achartengine.model.*; | |
import org.achartengine.renderer.*; | |
import org.achartengine.tools.*; | |
import org.json.*; | |
public class ChartExample extends Activity { | |
@Override | |
public void onCreate(Bundle savedInstanceState) { | |
super.onCreate(savedInstanceState); | |
LinearLayout ll = new LinearLayout(this); | |
ll.setOrientation(LinearLayout.VERTICAL); | |
final TimeChart lc = new TimeChart(getDataset(), getRenderer()); | |
final GraphicalView graph = new GraphicalView(getApplicationContext(),lc); | |
ll.addView(graph); | |
lc.setXAxisSmart(true); | |
lc.setDateFormat("yy-MM-dd"); | |
setContentView(ll); | |
} | |
void log(String msg) { | |
Log.d("graph",msg); | |
} | |
public void onClickMe(View v) { | |
Intent chart = ChartFactory.getLineChartIntent(getApplicationContext(), getDataset(), getRenderer()); | |
startActivity(chart); | |
} | |
private XYMultipleSeriesRenderer getRenderer() { | |
XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer(); | |
renderer.setApplyBackgroundColor(true); | |
renderer.setBackgroundColor(Color.BLACK); | |
renderer.setXLabelsColor(Color.YELLOW); | |
renderer.setShowGrid(true); | |
renderer.setYLabelsAlign(Align.LEFT); | |
renderer.setChartTitle("Closure Profile"); | |
renderer.setXTitle("Date"); | |
renderer.setYTitle("Closure"); | |
XYSeriesRenderer r = new XYSeriesRenderer(); | |
r.setColor(Color.WHITE); | |
renderer.addSeriesRenderer(r); | |
renderer.setZoomButtonsVisible(true); | |
return renderer; | |
} | |
private XYMultipleSeriesDataset getDataset() { | |
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset(); | |
TimeSeries series = new TimeSeries("Demo"); | |
AssetManager am = getAssets(); | |
try { | |
InputStream is = am.open("closure.json"); | |
String json = readStream(is); | |
is.close(); | |
JSONObject obj = (JSONObject)new JSONTokener(json).nextValue(); | |
JSONArray arr = obj.getJSONArray("data"); | |
double closure = 0.0; | |
for (int i = 0; i < arr.length(); i++) { | |
JSONArray point = arr.getJSONArray(i); | |
Date d = new Date(point.getLong(0)); | |
double val = point.getDouble(1); | |
closure += val; | |
series.add(d,closure); | |
} | |
} catch (Exception e) { | |
Log.d("graph",e.getMessage()); | |
} | |
dataset.addSeries(series); | |
return dataset; | |
} | |
private String readStream(InputStream is) { | |
ByteArrayOutputStream output = new ByteArrayOutputStream(4096); | |
byte[] buffer = new byte[4096]; | |
int n = 0; | |
try { | |
while (-1 != (n = is.read(buffer))) { | |
output.write(buffer, 0, n); | |
} | |
} catch (IOException e) { | |
Log.d("graph",e.getMessage()); | |
return null; | |
} | |
return output.toString(); | |
} | |
} |
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