最近学习android编程。遇到一个关于AChartEngine组建的绘制图像的问题,不知道大家有没有用过这个组建。
问题如下:
如何把X轴设置为时间显示呢?比如设置为年/月 默认的都是整数的。谢谢大家!
问题如下:
如何把X轴设置为时间显示呢?比如设置为年/月 默认的都是整数的。谢谢大家!
解决方案 »
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2011.8 可以设参数为“YYYY.MM”
看看这个帖子上的软件,也是使用achartengine做的图,可以向他请教下
楼主请参考achartengine 官方demo!!!以下是我选的一个
/**
* Copyright (C) 2009, 2010 SC 4ViewSoft SRL
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.achartengine.chartdemo.demo.chart;import java.util.ArrayList;
import java.util.Date;
import java.util.List;import org.achartengine.ChartFactory;
import org.achartengine.chart.PointStyle;
import org.achartengine.renderer.SimpleSeriesRenderer;
import org.achartengine.renderer.XYMultipleSeriesRenderer;import android.content.Context;
import android.content.Intent;
import android.graphics.Color;/**
* Project status demo chart.
*/
public class ProjectStatusChart extends AbstractDemoChart {
/**
* Returns the chart name.
*
* @return the chart name
*/
public String getName() {
return "Project tickets status";
} /**
* Returns the chart description.
*
* @return the chart description
*/
public String getDesc() {
return "The opened tickets and the fixed tickets (time chart)";
} /**
* Executes the chart demo.
*
* @param context the context
* @return the built intent
*/
public Intent execute(Context context) {
String[] titles = new String[] { "New tickets", "Fixed tickets" };
List<Date[]> dates = new ArrayList<Date[]>();
List<double[]> values = new ArrayList<double[]>();
int length = titles.length;
for (int i = 0; i < length; i++) {
dates.add(new Date[12]);
dates.get(i)[0] = new Date(108, 9, 1);
dates.get(i)[1] = new Date(108, 9, 8);
dates.get(i)[2] = new Date(108, 9, 15);
dates.get(i)[3] = new Date(108, 9, 22);
dates.get(i)[4] = new Date(108, 9, 29);
dates.get(i)[5] = new Date(108, 10, 5);
dates.get(i)[6] = new Date(108, 10, 12);
dates.get(i)[7] = new Date(108, 10, 19);
dates.get(i)[8] = new Date(108, 10, 26);
dates.get(i)[9] = new Date(108, 11, 3);
dates.get(i)[10] = new Date(108, 11, 10);
dates.get(i)[11] = new Date(108, 11, 17);
}
values.add(new double[] { 142, 123, 142, 152, 149, 122, 110, 120, 125, 155, 146, 150 });
values.add(new double[] { 102, 90, 112, 105, 125, 112, 125, 112, 105, 115, 116, 135 });
length = values.get(0).length;
int[] colors = new int[] { Color.BLUE, Color.GREEN };
PointStyle[] styles = new PointStyle[] { PointStyle.POINT, PointStyle.POINT };
XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles);
setChartSettings(renderer, "Project work status", "Date", "Tickets", dates.get(0)[0].getTime(),
dates.get(0)[11].getTime(), 50, 190, Color.GRAY, Color.LTGRAY);
renderer.setXLabels(5);
renderer.setYLabels(10);
length = renderer.getSeriesRendererCount();
for (int i = 0; i < length; i++) {
SimpleSeriesRenderer seriesRenderer = renderer.getSeriesRendererAt(i);
seriesRenderer.setDisplayChartValues(true);
}
return ChartFactory.getTimeChartIntent(context, buildDateDataset(titles, dates, values),
renderer, "MM/dd/yyyy");
}}