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我在我的应用程序中使用这个库:https ://github.com/jjoe64/GraphView-Demos用于绘制图表。这个库可以工作,但是当我想绘制新图表或重绘不工作时

我看到这个链接但不起作用: GraphView and resetData

我在活动中绘制图表的代码:

GraphViewData[] newData = new GraphViewData[arrayWeight.size()];
    int i = 0;
    String date_now = "";

    for (Weight w : arrayWeight) {
        i += 1;
        date_now = w.getdate();
        date_now = date_now.substring(8);

        newData[arrayWeight.indexOf(w)] = new GraphViewData(
                Integer.parseInt(date_now), w.getWeight());

    }

    GraphViewSeries exampleSeries = new GraphViewSeries(newData);
    exampleSeries.resetData(newData);
    GraphView graphView = new LineGraphView(this, "weight");
    graphView.redrawAll();
    graphView.setVerticalLabels(new String[] { "100", "50", "1" });
    graphView.setShowLegend(true);
    graphView.setBackgroundColor(Color.GRAY);

    graphView.addSeries(exampleSeries); // data
    LinearLayout layout = (LinearLayout) findViewById(R.id.layout);
    layout.addView(graphView);
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1 回答 1

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如果您想用新数据填充图形,则不必创建新的 graphview 对象,也不必创建新的 graphviewseries 对象。只需使用 resetData 更改您的 graphviewseries 对象中的数据。仔细查看 GraphView-Demos 项目,有一个工作示例。

于 2014-02-19T11:32:46.050 回答