Question

enter image description here我在项目中使用MP条形图。我复制粘贴一个教程中的代码。该教程中的代码工作正常但在我的项目中出错。

    BarChart barChart = (BarChart) findViewById(R.id.barchart);

    ArrayList<BarEntry> entries = new ArrayList<>();
    entries.add(new BarEntry(8f, 0));
    entries.add(new BarEntry(2f, 1));
    entries.add(new BarEntry(5f, 2));
    entries.add(new BarEntry(20f, 3));
    entries.add(new BarEntry(15f, 4));
    entries.add(new BarEntry(19f, 5));

    BarDataSet bardataset = new BarDataSet(entries, "Cells");

    ArrayList<String> labels = new ArrayList<String>();
        labels.add("2016");
        labels.add("2015");
        labels.add("2014");
        labels.add("2013");
        labels.add("2012");
        labels.add("2011");

    //error on this line because of string arraylist 
    //BarData data = new BarData(labels, bardataset);
    barChart.setData(data); // set the data and list of lables into chart

    barChart.setDescription("Set Bar Chart Description"); // set the description

    bardataset.setColors(ColorTemplate.COLORFUL_COLORS);

    barChart.animateY(5000);

// XML文件

 <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <com.github.mikephil.charting.charts.BarChart
            android:id="@+id/barchart"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
        <!--com.jjoe64.graphview.GraphView
            android:id="@+id/graph"
            android:layout_width="match_parent"
            android:layout_height="200dip" /-->

    </LinearLayout>

Answer 1

试试这个简单的教程。你从中得到了一些想法。

 ArrayList<BarEntry> bargroup1 = new ArrayList<>();
    bargroup1.add(new BarEntry(8f,0));
    bargroup1.add(new BarEntry(2f,1));
    bargroup1.add(new BarEntry(5f,2));
    bargroup1.add(new BarEntry(20f,3));
    bargroup1.add(new BarEntry(15f,4));
    bargroup1.add(new BarEntry(19f,5));

BarDataSet barDataSet1 = new BarDataSet(bargroup1, "Group 1");
barDataSet1.setColors(ColorTemplate.COLORFUL_COLORS);

ArrayList<String> labels = new ArrayList<String>();
    labels.add("2016");
    labels.add("2015");
    labels.add("2014");
    labels.add("2013");
    labels.add("2012");
    labels.add("2011");

ArrayList<BarDataSet> dataSets = new ArrayList<>();
    dataSets.add(barDataSet1);

BarData data = new BarData(labels, dataSets); 
barChart.setData(data);

MP条形图android错误

1 个答案: