AChartEngine CombinedXYChart wrong 4th parameter found

问题

i have a little Problem with my combined chart. 3 years ago i made the same with Eclipse and used a jar library. I copied my code to android Studio, using a dependency and now it's not working. I can't get it work.

I will post my whole code and then I will mark the problem.

public void createChart()
{
    XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
    XYMultipleSeriesRenderer multiRenderer = new XYMultipleSeriesRenderer();
    final Bundle extras = this.getIntent().getExtras();
    couchdurations = extras.getLongArray("couchtimes");
    perstdurations = extras.getLongArray("persttimes");
    //ToDo Sqlite noch ergänzen
    XYSeries couchseries = new XYSeries("CouchBase");
    XYSeriesRenderer couchRenderer = new XYSeriesRenderer();
    XYSeries perstseries = new XYSeries("PerstDB");
    XYSeriesRenderer perstRenderer = new XYSeriesRenderer();

    couchRenderer.setColor(Color.RED);
    couchRenderer.setPointStyle(PointStyle.X);
    couchRenderer.setFillPoints(false);
    couchRenderer.setLineWidth(2);
    couchRenderer.setDisplayChartValues(false);

    perstRenderer.setColor(Color.BLUE);
    perstRenderer.setPointStyle(PointStyle.X);
    perstRenderer.setFillPoints(false);
    perstRenderer.setLineWidth(2);
    perstRenderer.setDisplayChartValues(false);

    multiRenderer.addSeriesRenderer(couchRenderer);
    multiRenderer.addSeriesRenderer(perstRenderer);
    multiRenderer.setYAxisMin(0.0);
    multiRenderer.setYAxisMax(10000000.0);
    multiRenderer.setXAxisMax(60000.0);
    multiRenderer.setLabelsTextSize(40);
    multiRenderer.setLegendTextSize(40);

    for(int i = 0; i < couchdurations.length; i++)
    {
        couchseries.add(couchdurations[i], datasizes[i]);
        perstseries.add(perstdurations[i], datasizes[i]);
    }
    dataset.addSeries(couchseries);
    dataset.addSeries(perstseries);

    // Getting a reference to LinearLayout of the MainActivity Layout
    LinearLayout chartContainer = (LinearLayout) findViewById(R.id.chart_container);

    // Specifying chart types to be drawn in the graph
    // Number of data series and number of types should be same
    // Order of data series and chart type will be same
    String[] types = new String[dataset.getSeriesCount()];
    for(int i = 0; i < (dataset.getSeriesCount()); i++)
    {
        types[i] = LineChart.TYPE;
    }
    // Creating a combined chart with the chart types specified in types array


mChart = (GraphicalView) ChartFactory.getCombinedXYChartView(getBaseContext(), dataset, multiRenderer, types);
    // Adding the Combined Chart to the LinearLayout

    chartContainer.addView(mChart);
}

The problem is the following line:

mChart = (GraphicalView) ChartFactory.getCombinedXYChartView(getBaseContext(), dataset, multiRenderer, types);

I always get the error that the 4th parameter is wrong. But I used originally the same code before 3 years inside another android app. Error Screenshot 1 Error Screenshot 2 You can see the Error Message in the attached pictures. Wrong 4th parameter type. Found 'java.lang.String[]', required: 'org.achartengine.chart.CombinedXYChart.XYCombinedChartDef[]'

Can anybody help me to solve this problem? I have no idea how to solve it.

回答1:

I got it. Changing from

String[] types = new String[dataset.getSeriesCount()];
    for(int i = 0; i < (dataset.getSeriesCount()); i++)
    {
        types[i] = LineChart.TYPE;
    }

CombinedXYChart.XYCombinedChartDef[] types = new CombinedXYChart.XYCombinedChartDef[]
            {

                    new CombinedXYChart.XYCombinedChartDef(LineChart.TYPE, 0), new CombinedXYChart.XYCombinedChartDef(LineChart.TYPE, 1)
            };

来源：https://stackoverflow.com/questions/35082161/achartengine-combinedxychart-wrong-4th-parameter-found

标签

android

android-studio

achartengine