MPandroidchart一些点的颜色不变 [英] MPandroidchart some dot's color doesn't change

问题描述

我正在制作散点图，如果值超过特定值，

I'm making scatter chart that if value over specific value,

点的颜色已更改.

我写了这样的代码.

for (int i = 0; i < 30; i++) 
{  
       float y = (float) (Math.random()*0.2+0.1);
       value1.add(new Entry(i, y));

        if(y>=0.2f)
        {
            colors.add(getBaseContext().getResources().getColor(R.color.color_red));
        }
        else
            colors.add(getBaseContext().getResources().getColor(R.color.color_skyblue));
       }
}

结果在下面.

如您所见，有一行.

上面的颜色应该是红色，下面的颜色应该是蓝色.

Upper side's color should be red, lower side's color should be blue.

您会看到图表下方的正方形.

And you can see the square that below the graph.

例如，

正方形的数量与圆形的数量相同，9

the number of the squares is same as the number of circles, 9

但是只有一个圆圈是蓝色的.

but only one circle is blue.

我认为我的代码没有问题.

I think there is no problem in my codes.

但显然存在问题.

请让我解决这个问题.

谢谢.

推荐答案

您可以为参考上方和下方的点创建两组，并为两组分配颜色.

You can create two sets for the points above and below the reference and assign colors to the two sets.

ArrayList<Entry> aboveLevel = new ArrayList<>();
ArrayList<Entry> belowLevel = new ArrayList<>();

for (int i = 0; i < 30; i++){
    float y = (float) (Math.random()*0.2+0.1);
    if (y>=0.2f) {
       aboveLevel.add(new Entry(i, y));
    } else {
       belowLevel.add(new Entry(i, y));
    }
}

ScatterDataSet set1 = new ScatterDataSet(aboveLevel, "Above");
set1.setColor(ColorTemplate.COLORFUL_COLORS[0]);

ScatterDataSet set2 = new ScatterDataSet(belowLevel, "Below");
set2.setColor(ColorTemplate.COLORFUL_COLORS[1]);

ArrayList<IScatterDataSet> dataSets = new ArrayList<>();
dataSets.add(set1); // add the data sets
dataSets.add(set2);

// create a data object with the data sets
ScatterData data = new ScatterData(dataSets);

chart.setData(data);

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