需求：绘制12个月份的温度曲线

效果图：

Screenshot_20200720_171342_com.cong.mpchartdemo.jpg

完整源码：

public class LineChartActivity extends AppCompatActivity {

private LineChart mLineChart;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_line_chart);

    mLineChart = findViewById(R.id.lineChart);
    /**
     * 需求：绘制12个月份的温度曲线
     */
    List<Float> temperatures = Arrays.asList(20f, 24f,30f,40f,50f,60f,40f,20f,80f,40f,20f,80f);
    final List<String> xList = Arrays.asList("一月", "二月","三月","四月","五月", "六月","七月","八月","九月", "十月","十一月","十二月");

    //设置曲线整体的配置
    mLineChart.setNoDataText("暂无数据");
    //设置绘制动画
    mLineChart.animateXY(1000, 1000);
    //隐藏说明
    mLineChart.getDescription().setEnabled(false);

    //设置X轴
    XAxis xAxis = mLineChart.getXAxis();
    xAxis.setAxisMinimum(0f);
    xAxis.setLabelCount(12,true);
    xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
    //设置要不要X轴的网格，就是网格的竖线
    xAxis.setDrawGridLines(false);
    xAxis.setValueFormatter(new IAxisValueFormatter() {
        @Override
        public String getFormattedValue(float value, AxisBase axis) {
            return xList.get((int)value);
        }
    });

    //设置Y轴
    YAxis rightYAxis = mLineChart.getAxisRight();
    //隐藏右边Y轴
    rightYAxis.setEnabled(false);
    YAxis leftYAxis = mLineChart.getAxisLeft();
    //设置它可以从0开始，并且Y轴开始就不会高于X轴
    leftYAxis.setAxisMinimum(0f);
    //leftYAxis.setAxisMaximum(100f);

    //设置数据
    List<Entry> entries = new ArrayList<>();
    for (int i = 0; i < 12; i++) {
        entries.add(new Entry(i, temperatures.get(i)));
    }

    LineDataSet lineDataSet = new LineDataSet(entries, "温度示例");
    LineData data = new LineData(lineDataSet);
    mLineChart.setData(data);
}}

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