android 生成图表,Android中使用achartengine生成图表的具体方法
package com.meritit.footlottery.view;import java.util.Random;import org.achartengine.ChartFactory;import org.achartengine.chart.BarChart.Type;import org.achartengine.model.CategorySeries;import org.ac
package com.meritit.footlottery.view;
import java.util.Random;
import org.achartengine.ChartFactory;
import org.achartengine.chart.BarChart.Type;
import org.achartengine.model.CategorySeries;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.renderer.DefaultRenderer;
import org.achartengine.renderer.SimpleSeriesRenderer;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import com.meritit.footlottery.R;
import android.content.Context;
import android.graphics.Color;
import android.view.View;
public class BarChart {
private Context context;
public View execute(Context context) {
this.context = context;
return ChartFactory
.getBarChartView(context, getBarDemoDataset(), getBarDemoRenderer(), Type.DEFAULT);
}
/**
* XYMultipleSeriesDataset 类型的对象,用于提供图表需要表示的数据集,
* 这里我们用 getBarDemoDataset 来得到它。
*/
private XYMultipleSeriesDataset getBarDemoDataset() {
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
final int nr = 10;
Random r = new Random();
for (int i = 0; i < 3; i++) {
CategorySeries series = new CategorySeries("球队 " + (i + 1));
for (int k = 0; k < nr; k++) {
series.add(100 + r.nextInt() % 100);
}
dataset.addSeries(series.toXYSeries());
}
return dataset;
}
/**
* XYMultipleSeriesRenderer 类型的对象,用于提供图表展现时的一些样式,
* 这里我们用 getBarDemoRenderer 方法来得到它。
* getBarDemoRenderer 方法构建了一个 XYMultipleSeriesRenderer 用来设置2个系列各自的颜色
*/
public XYMultipleSeriesRenderer getBarDemoRenderer() {
XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
SimpleSeriesRenderer r = new SimpleSeriesRenderer();
r.setColor(Color.BLUE);
renderer.addSeriesRenderer(r);
r = new SimpleSeriesRenderer();
r.setColor(Color.GREEN);
renderer.addSeriesRenderer(r);
r = new SimpleSeriesRenderer();
r.setColor(Color.RED);
renderer.addSeriesRenderer(r);
renderer.setApplyBackgroundColor(true);
renderer.setBackgroundColor(Color.TRANSPARENT);
renderer.setMarginsColor(context.getResources().getColor(R.color.main_background_color));
renderer.setZoomEnabled(false, false);
renderer.setPanEnabled(false, false);
renderer.setLabelsTextSize(15);
renderer.setLabelsColor(Color.BLACK);
setChartSettings(renderer);
return renderer;
}
/**
* setChartSettings 方法设置了下坐标轴样式。
*/
private void setChartSettings(XYMultipleSeriesRenderer renderer) {
renderer.setChartTitle("战绩分析");
renderer.setXTitle("横坐标");
renderer.setYTitle("纵坐标");
renderer.setXAxisMin(0.5);
renderer.setXAxisMax(10.5);
renderer.setYAxisMin(0);
renderer.setYAxisMax(210);
}
}
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