Java AChartEngine,点击获取绘图值
我使用achartengine编写了一个简单的时间图表。我想做的是通过点击图形上的点来获得已经绘制的值,这可能吗 假设mChartView是您的图形视图:Java AChartEngine,点击获取绘图值,java,achartengine,Java,Achartengine,我使用achartengine编写了一个简单的时间图表。我想做的是通过点击图形上的点来获得已经绘制的值,这可能吗 假设mChartView是您的图形视图: mChartView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { SeriesSelection seriesS
mChartView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();
double[] xy = mChartView.toRealPoint(0);
if (seriesSelection == null) {
Toast.makeText(GraficoMensile.this, "No chart element was clicked", Toast.LENGTH_SHORT)
.show();
} else {
Toast.makeText(
GraficoMensile.this,
"Chart element in series index " + seriesSelection.getSeriesIndex()
+ " data point index " + seriesSelection.getPointIndex() + " was clicked"
+ " closest point value X=" + seriesSelection.getXValue() + ", Y=" + seriesSelection.getValue()
+ " clicked point value X=" + (float) xy[0] + ", Y=" + (float) xy[1], Toast.LENGTH_SHORT).show();
}
}
});
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