MPChart_ohos

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar', '*.har'])
	……
}

//初始化Chart
LineChart chart = new LineChart(this);

//设置背景颜色
chart.setBackground(element);
// 不显示详细信息
chart.getDescription().setEnabled(false);
//设置网格辅助线在图表曲线的上方
chart.setDrawGridBackground(false);

// 初始化x轴
XAxis xAxis;
xAxis = chart.getXAxis();

// 初始化y轴
YAxis yAxis;
yAxis = chart.getAxisLeft();

// 不启用右y轴
chart.getAxisRight().setEnabled(false);

// 设置轴线范围
xAxis.setAxisMaximum(20f);
xAxis.setAxisMinimum(0f);
yAxis.setAxisMaximum(60f);
yAxis.setAxisMinimum(0f);

// 此处以float数组为例：
private float[] mDataPoints = new float[]{0,2,1,5,2,7,3,9,4,5,5,10,6,18,7,8,8,3};

private ArrayList<Entry> loadExternalData(float[] dataPoints){
    int count = dataPoints.length;
    ArrayList<Entry> values = new ArrayList<>();
    for (int i = 0; i < count; i = i + 2){
        values.add(new Entry(dataPoints[i], dataPoints[i + 1]));
    }
    return values;
}

private LineData setData(ArrayList<Entry> values) {

        LineDataSet set1;

        // 实例化LineDataSet
        set1 = new LineDataSet(values, "随机数据");
        
        // 添加绘制属性
        set1.setDrawIcons(false);
        // yellow lines and black points
        set1.setColor(Color.YELLOW.getValue());
        // line thickness and point size
        set1.setLineWidth(1f);
        set1.setCircleRadius(3f);
        // draw points as solid circles
        set1.setDrawCircleHole(false);
        // customize legend entry
        set1.setFormLineWidth(1f);
        set1.setFormSize(15.f);
        // text size of values
        set1.setValueTextSize(9f);
        // set the filled area
        set1.setDrawFilled(true);
        set1.setFillFormatter(new IFillFormatter() {
            @Override
            public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
                return chart.getAxisLeft().getAxisMinimum();
            }
        });

        // 添加数据
        ArrayList<ILineDataSet> dataSets = new ArrayList<>();
        // add the data sets
        dataSets.add(set1); 
        // create a data object with the data sets
        LineData data = new LineData(dataSets);
        return data;

}

ArrayList<Entry> values = loadExternalData(mDataPoints);

LineData data = setData(values);

Component component = new Component(this);
Component.DrawTask drawTask = new Component.DrawTask() {
    @Override
    public void onDraw(Component component, Canvas canvas) {
        chart.onDraw(canvas, data);
    }
};

component.addDrawTask(drawTask);