任何使用AndroidPlot库的人都会告诉我如何在图表上绘制自定义点.到目前为止,我正在使用LineAndPointRenderer类和设置行来透明.
我想至少改变点的大小,但如果可能的话,请改为使用自定义图像.
P.S有1500名代表的人需要创建一个“AndroidPlot”标签.
解决方法:
通过创建自己的渲染器解决了这个问题.
import android.graphics.*;
import com.androidplot.series.XYSeries;
import com.androidplot.exception.PlotRenderException;
import com.androidplot.util.ValPixConverter;
import com.androidplot.xy.LineAndPointFormatter;
import com.androidplot.xy.XYPlot;
import com.androidplot.xy.XYSeriesRenderer;
public class CustomPointRenderer<FormatterType extends LineAndPointFormatter> extends XYSeriesRenderer<FormatterType> {
private float circleWidth = 1;
public CustomPointRenderer(XYPlot plot) {
super(plot);
}
@Override
public void onRender(Canvas canvas, RectF plotArea) throws PlotRenderException {
for(XYSeries series : getPlot().getSeriesListForRenderer(this.getClass())) {
drawSeries(canvas, plotArea, series, getFormatter(series));
}
}
@Override
protected void doDrawLegendIcon(Canvas canvas, RectF rect, FormatterType formatter) {
// horizontal icon:
float centerY = rect.centerY();
float centerX = rect.centerX();
if(formatter.getFillPaint() != null) {
canvas.drawRect(rect, formatter.getFillPaint());
}
if(formatter.getLinePaint() != null) {
canvas.drawLine(rect.left, rect.bottom, rect.right, rect.top, formatter.getLinePaint());
}
if(formatter.getVertexPaint() != null) {
canvas.drawPoint(centerX, centerY, formatter.getVertexPaint());
}
}
private void drawSeries(Canvas canvas, RectF plotArea, XYSeries series, LineAndPointFormatter formatter) throws PlotRenderException {
PointF p = null;
XYPlot plot = getPlot();
int size = series.size();
for (int i = 0; i < size; i++) {
Number y = series.getY(i);
Number x = series.getX(i);
if (y != null && x != null) {
p = ValPixConverter.valToPix(x, y, plotArea,
plot.getCalculatedMinX(),
plot.getCalculatedMaxX(),
plot.getCalculatedMinY(),
plot.getCalculatedMaxY());
if (formatter.getVertexPaint() != null) {
boolean offScreen = p.x > plotArea.right || p.y > plotArea.bottom || p.x < plotArea.left || p.y < plotArea.top;
if(!offScreen)
canvas.drawCircle(p.x, p.y - circleWidth, circleWidth, formatter.getVertexPaint());
}
}
}
}
public void setWidth(float width){
circleWidth = width;
}
}
标签:android,graph,androidplot 来源: https://codeday.me/bug/20190826/1729687.html
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