Android Chart Control Williamchart User Guide

Williamchart is an Android chart control on GitHub, project address: Https://github.com/diogobernardino/WilliamChart

The chart control works well and is easy to use.

Referring to the sample program it provides, I have written a simpler charting program with the following steps:

1. Download the project from GitHub and import its library project into ADT;

2. Import its sample project into ADT;

3. Create your own project, reference the Library project, and copy the DataRetriever class from the sample project to the source code directory of the project;

4. Create a Chart_layout.xml code as follows:

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "    android:layout_width=" match_parent "    android:layout_height=" match_parent "    android:o rientation= "vertical" >   <com.db.chart.view.linechartviewxmlns:chart= "http://schemas.android.com/apk/ Res-auto "android:id=" @+id/linechart "    android:layout_width=" match_parent "    android:layout_height=" 0DP "    android:layout_weight= "."    android:paddingtop= "15DP"    android:paddingbottom= "5DP"    android: paddingleft= "10DP"    android:paddingright= "10DP"    chart:chart_shadowdy= "1DP"    Chart:chart_ shadowradius= "1DP"    chart:chart_shadowcolor= "#80000000"    chart:chart_axiscolor= "@color/axis"    chart:chart_axisborderspacing= "0DP" ></com.db.chart.view.LineChartView></LinearLayout>

5. Create an activity class with the following code:

Package Com.example.wxb_example;import Com.db.chart.model.lineset;import Com.db.chart.model.point;import Com.db.chart.view.linechartview;import Com.db.chart.view.ycontroller;import Android.app.activity;import Android.graphics.color;import Android.os.bundle;public class Williamchartactivity extends Activity {//Linear chart control private Static Linechartview mlinechart;private final static string[] Mlabels = {"ANT", "GNU", "OWL", "APE", "COD", "YAK", "RAM", " JAY "}; @Overrideprotected void OnCreate (Bundle savedinstancestate) {//TODO auto-generated method Stubsuper.oncreate ( Savedinstancestate); Setcontentview (r.layout.chart_layout); Mlinechart = (Linechartview) findViewById ( R.id.linechart);  Lineset data;mlinechart.reset (); int nsets = 2;  Two lines int npoints = 5; 5 points for each line (int i = 0; i < nsets; i++) {data = new lineset (); for (int j = 0; J < Npoints; J + +) Data.addpoint (new Point ( MLABELS[J], Dataretriever.randvalue (0, ten));d Ata.setdots (Dataretriever.randboolean ()). Setdotscolor ( Color.parsecolor (DataretrievEr.getcolor (Dataretriever.randnumber (0,2))). Setdotsradius (Dataretriever.randdimen (4,7)). SetLineThickness ( Dataretriever.randdimen (3,8)). Setlinecolor (Color.parsecolor (Dataretriever.getcolor (i))). SetDashed ( Dataretriever.randboolean ()). Setsmooth (Dataretriever.randboolean ()); if (i = = 2) {//data.setfill (Color.parsecolor (" #3388c6c3 ")), int[] colors = {Color.parsecolor (" #3388c6c3 "), color.transparent};d ata.setgradientfill (colors, null);} if (Dataretriever.randboolean ()) data.setdotsstrokethickness (Dataretriever.randdimen (1,4)). SetDotsStrokeColor ( Color.parsecolor (Dataretriever.getcolor (Dataretriever.randnumber (0,2))); Mlinechart.adddata (data);} Mlinechart.setgrid (Dataretriever.randpaint ()). Setverticalgrid (Dataretriever.randpaint ()). SetHorizontalGrid ( Dataretriever.randpaint ())//.setthresholdline (2, Randpaint ()). Setylabels (YController.LabelPosition.NONE). Setyaxis (False). Setxlabels (Dataretriever.getxposition ()). Setxaxis (Dataretriever.randboolean ()). SetMaxAxisValue (2). Animate (Dataretriever.randanimatIon (NULL, npoints))//.show ();}} 

Note that this class refers to a copy of the DataRetriever class.

To run the project, the effect is as follows:

The effect can be further manipulated.

Android Chart Control Williamchart User Guide