实现柱状图与条形图的结合，MPAndroidChart 的简单使用

先贴效果图：

这种样式的统计表格也是比较常用的，下面直接贴代码：

public class ChartActivity extends BaseActivity {
    @BindView(R.id.chart1)
    MyCombinedChart mChart1;//完成情况
    private final int itemcount = 3;
    protected String[] mMonths = new String[]{"张三", "李四", "王五"};//X轴标签

    private List<Float> lineDatas;//线图数据源
    private List<float[]> barDatas;//堆图数据源

    @Override
    public void init(Bundle savedInstanceState) {
        setContentView(R.layout.activity_chart,this);
        initTitleBar(R.id.title,"报表");
        setChart1();
    }

    /**
     * 配置维修单完成情况
     */
    private void setChart1() {
        configChart(mChart1);
    }

    private void configChart(MyCombinedChart mChart){
        mChart.setDrawValueAboveBar(false);
        mChart.getDescription().setEnabled(false);//不显示表名
//        mChart.getDescription().setPosition();//设置表名在屏幕中的位置
        mChart.setBackgroundColor(Color.WHITE);
        mChart.setDrawGridBackground(false);
        mChart.setDrawBarShadow(false);
        mChart.setScaleYEnabled(false);//Y轴方向上不允许拉伸
        mChart.setHighlightFullBarEnabled(false);

        // draw bars behind lines设置绘制顺序，重叠部分的图案后绘制的会遮挡先绘制的
        mChart.setDrawOrder(new CombinedChart.DrawOrder[]{
                CombinedChart.DrawOrder.BAR, CombinedChart.DrawOrder.LINE
        });

        //图例
        Legend l = mChart.getLegend();
        l.setWordWrapEnabled(true);
        l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.CENTER);
        l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
        l.setDrawInside(false);


        //设置右边Y轴标签
        YAxis rightAxis = mChart.getAxisRight();
        rightAxis.setAxisMaximum(100);//设置最大数值
        rightAxis.setLabelCount(6, true);//设置标签数量
        rightAxis.setValueFormatter(new MyAxisValueFormatter());//设置数值显示格式
        rightAxis.setDrawGridLines(true);//绘制网格线
        rightAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
        //设置左边Y轴标签
        YAxis leftAxis = mChart.getAxisLeft();
        leftAxis.setAxisMaximum(20);
        leftAxis.setLabelCount(6, true);
        leftAxis.setDrawGridLines(true);
        leftAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
        //设置X轴标签
        XAxis xAxis = mChart.getXAxis();
        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
        xAxis.setAxisMinimum(0f);
        xAxis.setGranularity(1f);
        xAxis.setDrawGridLines(false);
        xAxis.setValueFormatter(new IAxisValueFormatter() {
            @Override
            public String getFormattedValue(float value, AxisBase axis) {
                if (value==0||value==mMonths.length+1){
                    return "";
                }
                return mMonths[(int) (value-1) % mMonths.length];
            }

            @Override
            public int getDecimalDigits() {
                return 0;
            }
        });

        CombinedData data = new CombinedData();

        data.setData(generateBarData());
        data.setData(generateLineData());
        //设置字体样式
//        data.setValueTypeface(mTfLight);

        xAxis.setAxisMaximum(data.getXMax() + 1);//最大宽度另加1个单元格的宽度

        mChart.setData(data);
        mChart.invalidate();
    }

    private LineData generateLineData() {
        lineDatas = new ArrayList<>();
        for (int i = 0; i < barDatas.size(); i++) {

            lineDatas.add(barDatas.get(i)[0] / (plus(barDatas.get(i))) * 100);

        }

        LineData d = new LineData();

        ArrayList<Entry> entries = new ArrayList<Entry>();

        //传入数据
        for (int index = 0; index < itemcount; index++)
            entries.add(new Entry(index + 1, lineDatas.get(index)));

        LineDataSet set = new LineDataSet(entries, "完成率");
        set.setColor(getResources().getColor(R.color.chart_green));
        set.setLineWidth(2.5f);
        set.setCircleColor(Color.rgb(240, 238, 70));
        set.setCircleRadius(5f);
        set.setFillColor(Color.rgb(240, 238, 70));
        set.setMode(LineDataSet.Mode.LINEAR);
        set.setDrawValues(true);
        set.setValueTextSize(10f);
        set.setValueTextColor(getResources().getColor(R.color.black));//设置内容字体颜色

        set.setAxisDependency(YAxis.AxisDependency.RIGHT);//以右边Y轴的标签绘制
        d.addDataSet(set);
        MyValueFormatter format = new MyValueFormatter();
        d.setValueFormatter(format);

        return d;
    }

    private float plus(float[] f) {
        float plus = 0;
        for (float aF : f) {
            plus += aF;
        }
        return plus;
    }


    private BarData generateBarData() {
        barDatas = new ArrayList<>();
        barDatas.add(new float[]{6, 8});
        barDatas.add(new float[]{15, 4});
        barDatas.add(new float[]{11, 7});

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

        for (int index = 0; index < itemcount; index++) {
            // stacked
            entries2.add(new BarEntry(index + 1, barDatas.get(index)));
        }

        BarDataSet set2 = new BarDataSet(entries2, "");
        set2.setStackLabels(new String[]{"已完成", "未完成"});
        set2.setColors(getResources().getColor(R.color.chart_blue),getResources().getColor(R.color.chart_red));
        set2.setValueTextColor(getResources().getColor(R.color.black));
        set2.setValueTextSize(10f);
        set2.setAxisDependency(YAxis.AxisDependency.LEFT);//以左边Y轴的标签绘制

        float barWidth = 0.45f; // x2 dataset

        BarData d = new BarData(set2);
        d.setBarWidth(barWidth);

        return d;
    }

 class MyAxisValueFormatter implements IAxisValueFormatter
{

    private DecimalFormat mFormat;

    public MyAxisValueFormatter() {
        mFormat = new DecimalFormat("###,###,###,##0.0");
    }

    @Override
    public String getFormattedValue(float value, AxisBase axis) {
        return mFormat.format(value) + "%";
    }


    //小数点后数字个数
    @Override
    public int getDecimalDigits() {
        return 0;
    }
}
class MyValueFormatter implements IValueFormatter
{

    private DecimalFormat mFormat;


    public MyValueFormatter() {
        mFormat = new DecimalFormat("###,###,###,##0.0");
    }

    @Override
    public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
        //百分比显示
        return mFormat.format(value)+ "%" ;
    }

}
 class MyYAxis extends YAxis {


    public MyYAxis() {
        super();
    }

    public MyYAxis(AxisDependency position) {
        super(position);
    }

    @Override
    public String getFormattedLabel(int index) {
        if (index < 0 || index >= mEntries.length)
            return "";
        else {
            float max=mEntries[0];
            for (int i=1;i<mEntries.length;i++){
                Log.d("test", "getFormattedLabel: "+mEntries[i]);
                if (mEntries[i]>max){
                    max=mEntries[i];
                }
            }
            return getValueFormatter().getFormattedValue(mEntries[index] /max*100, this);
        }
    }


}

}

public class MyCombinedChart extends CombinedChart {
    public MyCombinedChart(Context context) {
        super(context);
    }

    public MyCombinedChart(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyCombinedChart(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    public YAxis getAxisRight() {
        return super.getAxisRight();
    }

    @Override
    protected void init() {
        super.init();

        mAxisLeft = new YAxis(YAxis.AxisDependency.LEFT);
        mAxisRight = new MyYAxis(MyYAxis.AxisDependency.RIGHT);

        mLeftAxisTransformer = new Transformer(mViewPortHandler);
        mRightAxisTransformer = new Transformer(mViewPortHandler);

        mAxisRendererLeft = new YAxisRenderer(mViewPortHandler, mAxisLeft, mLeftAxisTransformer);
        mAxisRendererRight = new YAxisRenderer(mViewPortHandler, mAxisRight, mRightAxisTransformer);

        mXAxisRenderer = new XAxisRenderer(mViewPortHandler, mXAxis, mLeftAxisTransformer);

        setHighlighter(new ChartHighlighter(this));

        mChartTouchListener = new BarLineChartTouchListener(this, mViewPortHandler.getMatrixTouch(), 3f);

        mGridBackgroundPaint = new Paint();
        mGridBackgroundPaint.setStyle(Paint.Style.FILL);
        // mGridBackgroundPaint.setColor(Color.WHITE);
        mGridBackgroundPaint.setColor(Color.rgb(240, 240, 240)); // light
        // grey

        mBorderPaint = new Paint();
        mBorderPaint.setStyle(Paint.Style.STROKE);
        mBorderPaint.setColor(Color.BLACK);
        mBorderPaint.setStrokeWidth(Utils.convertDpToPixel(1f));
    }
}