Android Chart框架 MPAndroidChart学习笔记6_柱状图

点击这里查看项目源码

1.xml布局

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.immoc.ww.greendaodemo.fragment.LineChartFragment">

    <com.github.mikephil.charting.charts.BarChart
        android:id="@id/chart_bar"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</FrameLayout>

2.java

绑定

@Bind(R.id.chart_bar)
BarChart mChart;

设置数据

这里注意需要使用bar专用数据

    List<BarEntry> entries = new ArrayList<BarEntry>();
    List<BarEntry> entries2 = new ArrayList<BarEntry>();

    for (int i = 0; i < 20; i++) {
        // turn your data into Entry objects
        entries.add(new BarEntry(i, 20 * i));
        entries2.add(new BarEntry(i,10 * i));
    }
    
    //创建数据集
    BarDataSet dataSet = new BarDataSet(entries, "BarDataSet1"); // add entries to dataset
    dataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    BarDataSet dataSet2 = new BarDataSet(entries2, "BarDataSet2"); // add entries to dataset
    dataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
    //设置数据显示颜色：柱子颜色
    dataSet2.setColor(Color.RED);
    dataSet2.setBarBorderColor(Color.BLUE);
    
    List<IBarDataSet> dataSets=new ArrayList<IBarDataSet>();
    dataSets.add(dataSet);
    dataSets.add(dataSet2);
    //柱状图数据集
    BarData data = new BarData(dataSets);
    //设置柱子宽度
    data.setBarWidth(0.9f);
    mChart.setData(data);//装载数据
    mChart.setFitBars(true); //X轴自适应所有柱形图
    mChart.invalidate();//刷新

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