使用Graphview在android中绘制图形?

问题描述

我想在我的 android 应用程序上创建一个条形图.
我需要 scrollView 上的图表.

I want to create a bars graph on my android application.
I need the graph on a scrollView.

我已经尝试过 GraphView 和 AndroidPlot.

I've tried already GraphView and AndroidPlot.

推荐答案

UPDATE

GraphView 的新更新不支持这种方法

使用 GraphView:

我在下面做了一个函数，它接受三个数组作为参数.第一个采用 X 轴标签，接下来采用 Y 轴标签，最后一个采用要绘制的值.

I have made a function below that takes three arrays as parameter. First one takes X-axis labels, next takes Y-axis labels and last takes values to be plotted.

代码

private void renderGraph(String[] xAxis, String[] yAxis, float[] data) {

        GraphViewData[] data = new GraphViewData[xAxis.length];//this class is defined below

        double v = 1, w = 1;
        int num = xAxis.length;
        for (int j = 0; j < num; j++) {
            v = data[j];
            data[j] = new GraphViewData(j, v);
        }
        GraphViewSeries example1 = new GraphViewSeries(data);
        GraphView graphView = new BarGraphView(this, "GRAPH TITLE");
        graphView.setVerticalLabels(yAxis);
        graphView.setHorizontalLabels(xAxis);
        graphView.addSeries(example1);
        example1.getStyle().color = Color.BLUE;
        graphView.setScalable(true);
        graphView.getGraphViewStyle().setTextSize(18);
        graphView.setScrollable(false);
        graphView.getGraphViewStyle().setGridColor(Color.DKGRAY);
        graphView.getGraphViewStyle().setGridStyle(GridStyle.VERTICAL);
        graphView.getGraphViewStyle().setNumHorizontalLabels(5);
        LinearLayout layout = (LinearLayout) findViewById(R.id.graphz);//graphz is defined in layout
        layout.addView(graphView);
    }

GraphViewData 类:

这个类与文档中给出的类略有不同.

This class is little bit variant from the one given in documentation.

   public class GraphViewData implements GraphViewDataInterface {

    private double x, y;

    public GraphViewData(double x, double y) {
        super();
        this.x = x;
        this.y = y;
    }

    @Override
    public double getX() {
        // TODO Auto-generated method stub
        return this.x;
    }

    @Override
    public double getY() {
        // TODO Auto-generated method stub
        return this.y;
    }
}

附言

调用此方法为:

String[] xAxis = {"RED","WHITE","BLUE","GREEN"};
String[] yAxis = {"GOOD", "AVEGRAGE", "BAD"};
String[] data = {"1", "2", "1","2"};
renderGraph(xAxis, yAxis, data);

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