Cannot Select barChar column

[mdtuyen]

Hi,
Here is my setup for barChart:

barChart.chartDescription?.enabled = false
barChart.drawGridBackgroundEnabled = false

    barChart.dragEnabled = true
    barChart.setScaleEnabled(false)
    barChart.pinchZoomEnabled = false
    barChart.rightAxis.enabled = false
    barChart.delegate = self;
    
    barChart.drawBarShadowEnabled = false;
    barChart.drawValueAboveBarEnabled = true;
    
    barChart.maxVisibleCount = 60;
    
    let xAxis = barChart.xAxis;
    xAxis.labelPosition = .bottom;
    xAxis.labelFont = UIFont.systemFont(ofSize: 10)
    xAxis.granularity = 0.01;
    xAxis.labelCount = 7;
    xAxis.valueFormatter = TimeValueFormatter();
    
    let leftAxisFormatter = NumberFormatter();
    leftAxisFormatter.minimumFractionDigits = 0;
    leftAxisFormatter.maximumFractionDigits = 1;
    
    let leftAxis = barChart.leftAxis;
    leftAxis.labelFont = UIFont.systemFont(ofSize: 10);
    leftAxis.labelCount = 8;
    leftAxis.valueFormatter = DefaultAxisValueFormatter(formatter: leftAxisFormatter);
    leftAxis.labelPosition = .outsideChart;
    leftAxis.spaceTop = 0.15;
    leftAxis.axisMinimum = 0.0;

And i see that some colume chart of me can't select or difficuit to select it.
Why?
Please help me setup it is correct.

[liuxuan30]

use ChartsDemo first.