android下使用graphview做图形显示界面

此次是要做了一个图形显示界面，在网上找了一下，有好多开源的包可用。这里，我选择了graphview来做，个人偏好吧。下面就说说graphview的使用方法了。

首先下载graphview包，解压，在public目录下，找到graphview-3.1.jar文件，将其放入安卓工程下的libs文件夹，之后，我们就可以调用它写好的方法了。编程时可以参考doc目录下的allclasses-frame.html

@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.graph);dayString = getNowTime("yyyy-MM-dd");ChooseBar = getIntent().getStringExtra("type").equals("bar");// draw random curveint num = 10;GraphViewData[] data = new GraphViewData[num];double v = 0;for (int i = 0; i < num; i++) {v += 0.2;data[i] = new GraphViewData(i, getRandom());}// graph with dynamically genereated horizontal and vertical labelsif (ChooseBar) {graphView = new BarGraphView(this, "GraphDemo");} else {graphView = new LineGraphView(this, "GraphDemo");// ((LineGraphView) graphView).setDrawBackground(true);// 画图时加阴影}graphView.setCustomLabelFormatter(new CustomLabelFormatter() {@Overridepublic String formatLabel(double value, boolean isValueX) {// TODO Auto-generated method stubif (isValueX) {if (value <= 0)return "0";else {return null;}} else {if ((Math.round(value) == 0)) {return "标签一";} else if ((Math.round(value) == 1)) {return "标签二";} else if ((Math.round(value) == 2)) {return "标签三";} else {return " ";}// return null;}}});testSeries = new GraphViewSeries("label1", new GraphViewSeriesStyle(Color.rgb(90, 250, 00), 4), new GraphViewData[] {//new GraphViewData(1, 2.0d), new GraphViewData(2, 3.0d),//new GraphViewData(3, 4.0d), new GraphViewData(4, 0.0d) });// 线条颜色，线条粗细testSeries.getStyle().color = Color.CYAN;// 修改线条颜色series1 = new GraphViewSeries("label2", new GraphViewSeriesStyle(Color.rgb(90, 250, 00), 3), new GraphViewData[] {//new GraphViewData(1, 1.0d), new GraphViewData(2, 1.0d),//new GraphViewData(3, 1.0d), new GraphViewData(4, 1.0d) });series1.getStyle().color = Color.BLUE;// 修改线条颜色series1.getStyle().thickness = 1;series2 = new GraphViewSeries("label3", new GraphViewSeriesStyle(Color.rgb(90, 250, 00), 3), new GraphViewData[] {//new GraphViewData(1, 2.0d), new GraphViewData(2, 2.0d),//new GraphViewData(3, 2.0d), new GraphViewData(4, 2.0d) });series2.getStyle().color = Color.RED;// 修改线条颜色series2.getStyle().thickness = 1;// add datagraphView.addSeries(testSeries);if (!ChooseBar) {graphView.addSeries(series1);graphView.addSeries(series2);}// set view port, start=2, size=10graphView.setViewPort(1, 24);if (ChooseBar) {graphView.setViewPort(1, 24);}graphView.setScalable(true);graphView.setShowLegend(true);graphView.setLegendAlign(LegendAlign.BOTTOM);graphView.setLegendWidth(150);// graphView.getGraphViewStyle().setGridColor(Color.TRANSPARENT);graphView.getGraphViewStyle().setTextSize(25);//if (!ChooseBar) {graphView.getGraphViewStyle().setNumHorizontalLabels(13);graphView.getGraphViewStyle().setNumVerticalLabels(3);//}// 设置时间graphView.setTitle(getNowTime("yyyy-MM-dd HH:mm:ss") + "state");// time.setToNow();// int year = time.year;// int month=time.month;// int day = time.monthDay;// graphView.setTitle(String.valueOf(year)+"年"+month+"月"+day+"日");// set manual Y axis boundsgraphView.setManualYAxisBounds(2, 0);LinearLayout layout = (LinearLayout) findViewById(R.id.graph1);layout.addView(graphView);}

列出几幅图：