安卓GraphView在X轴上只渲染一个日期

// 准备数据
List<DataPoint> dataPoints = new ArrayList<>();
dataPoints.add(new DataPoint(new Date(), 10));
dataPoints.add(new DataPoint(new Date(), 20));
dataPoints.add(new DataPoint(new Date(), 30));

// 创建GraphView实例
GraphView graphView = findViewById(R.id.graphView);

// 创建数据系列
LineGraphSeries<DataPoint> series = new LineGraphSeries<>(dataPoints.toArray(new DataPoint[0]));

// 设置X轴标签
graphView.getGridLabelRenderer().setLabelFormatter(new DateAsXAxisLabelFormatter(this));
graphView.getGridLabelRenderer().setNumHorizontalLabels(1);

// 设置X轴范围
graphView.getViewport().setMinX(dataPoints.get(0).getX());
graphView.getViewport().setMaxX(dataPoints.get(dataPoints.size() - 1).getX());

// 渲染图表
graphView.addSeries(series);
graphView.onDataChanged(true, true);