1. 首先，在build.gradle文件中添加依赖项：implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0'
2. 在XML布局文件中添加一个LineChart视图
3. 在Java代码中获取LineChart视图并设置数据和格式：

//获取LineChart视图
LineChart lineChart = (LineChart) findViewById(R.id.line_chart);

//设置数据
ArrayList entries = new ArrayList<>();
entries.add(new Entry(0f, 4f));
entries.add(new Entry(1f, 8f));
entries.add(new Entry(2f, 6f));
entries.add(new Entry(3f, 2f));
entries.add(new Entry(4f, 18f));
entries.add(new Entry(5f, 9f));
entries.add(new Entry(6f, 12f));
entries.add(new Entry(7f, 10f));
LineDataSet dataSet = new LineDataSet(entries, "Label");
LineData lineData = new LineData(dataSet);
lineChart.setData(lineData);

//设置X轴
final String[] months = new String[]{"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
XAxis xAxis = lineChart.getXAxis();
xAxis.setValueFormatter(new IndexAxisValueFormatter(months));
xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
xAxis.setGranularity(1);
xAxis.setLabelCount(months.length);

//设置Y轴
YAxis yAxis = lineChart.getAxisLeft();
yAxis.setAxisMinimum(0f);
yAxis.setAxisMaximum(20f);

//刷新图表
lineChart.invalidate();