更改了功能的字体并获得 "Assertion failed: Expected feature to be removed from index"

Question

我用 openlayers 绘制了一个往返图。不同的点有这样的风格：

new ol.style.Style({
        image: new ol.style.Circle({
            radius: 2,

            fill: new ol.style.Fill({
                color: 'rgba(1,0,0,0)'
            })
        }),
        text: new ol.style.Text({
            font: 'normal 600 12px Calibri, sans-serif',
            text: feature.get('TEXT'),
            offsetX: 0,
            offsetY: +12,
            fill: new ol.style.Fill({
                color: 'rgba(1,0,0,0)'
            })
        })
    })

我想为特定事件修改字体（导出 png），因此对于每个功能我都在更改字体

for (var i = 0; i < vector_service_port.getSource().getFeatures().length; i++) {
  vector_service_port.getSource().getFeatures()[i].setStyle(new ol.style.Style({
        text: new ol.style.Text({
                font: 'normal 600 14px Calibri, sans-serif'
            })
    }));

}

但是我遇到了错误

Uncaught AssertionError: Assertion failed: Expected feature to be removed from index

我怎样才能绕过它？

Answer 1

我会做类似的事情：

var features = vector_service_port.getSource().getFeatures();
features.forEach(function(feature){
    feature.getStyle().getText().setFont('your desired font');
});

更改了功能的字体并获得 "Assertion failed: Expected feature to be removed from index"

Changed font of feature and got "Assertion failed: Expected feature to be removed from index"

openlayers-3