android功能代码--Android报表控件achartengine介绍(二)

来源：互联网发布：淘宝会员名大全好听编辑：程序博客网时间：2024/05/18 07:23

Android报achartengine再详细的介绍可以查看

http://blog.csdn.net/lk_blog/article/details/7642751

在achartengine中两种创建报表的方式

1，是在Activity中直接创建

2 是在Activity的view控件中创建（这种方式更灵活），使用achartengine中GraphicalView控件可以响应点击事件和动态数据的更新。现在只介绍在GraphicalView中创建响应点击事件

Java代码

package com.sinosoft.chartdemo;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import org.achartengine.ChartFactory;
import org.achartengine.GraphicalView;
import org.achartengine.chart.PointStyle;
import org.achartengine.model.SeriesSelection;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.model.XYSeries;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;
import org.achartengine.tools.PanListener;
import org.achartengine.tools.ZoomEvent;
import org.achartengine.tools.ZoomListener;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.Paint.Align;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.Toast;
/**
* 嵌入Acitivity中的折线图
*
* @author jianfan
*
*/
public class LineChartActivity extends BasicActivity {
private XYMultipleSeriesDataset mDataset;
private XYMultipleSeriesRenderer mRenderer;
private XYSeries mCurrentSeries;
private XYSeriesRenderer mCurrentRenderer;
private GraphicalView mChartView;
@Override
protected void onCreate(Bundle savedInstanceState) {
Log.i("onCreate", "onCreate");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Init();
}
/********
* 初始化数据DataSet和Renderer
*****/
private void Init() {
InitRenderer();
InitDataSet();
}
/***********
* 初始化 XYMultipleSeriesRenderer
**********/
private void InitRenderer() {
// 每个序列的颜色设置
int[] colors = new int[] { Color.BLUE, Color.GREEN, Color.CYAN, Color.YELLOW };
// 每个序列中点的形状设置
PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE, PointStyle.DIAMOND, PointStyle.TRIANGLE, PointStyle.SQUARE };
// 调用AbstractChart中的方法设置renderer.
// 设置线条的颜色和点的形状
mRenderer = buildRenderer(colors, styles);
int length = mRenderer.getSeriesRendererCount();
// 设置图上线上的点为实心
for (int i = 0; i < length; i++) {
((XYSeriesRenderer) mRenderer.getSeriesRendererAt(i)).setFillPoints(true);
}
// 调用AbstractChart中的方法设置图表的renderer属性.
setChartSettings(mRenderer, "平均温度", "月份", "温度", 0.5, 12.5, -10, 40, Color.LTGRAY, Color.LTGRAY);
// 设置x轴显示12个点,根据setChartSettings的最大值和最小值自动计算点的间隔
mRenderer.setXLabels(12);
// 设置y轴显示10个点,根据setChartSettings的最大值和最小值自动计算点的间隔
mRenderer.setYLabels(10);
mRenderer.setBackgroundColor(Color.BLACK);// 设置背景颜色
mRenderer.setApplyBackgroundColor(true); // 使背景色生效
mRenderer.setShowGrid(true);// 是否显示网格
mRenderer.setXLabelsAlign(Align.RIGHT);// 刻度线与刻度标注之间的相对位置关系
mRenderer.setYLabelsAlign(Align.RIGHT);// 刻度线与刻度标注之间的相对位置关系
mRenderer.setZoomButtonsVisible(true);// 是否显示放大缩小按钮
mRenderer.setPanLimits(new double[] { -10, 20, -10, 40 }); // 设置拖动时X轴Y轴允许的最大值最小值.
mRenderer.setZoomLimits(new double[] { -10, 20, -10, 40 });// 设置放大缩小时X轴Y轴允许的最大最小值.
}
/***********
* 初始化 XYMultipleSeriesDataset
**********/
private void InitDataSet() {
// 图例
String[] titles = new String[] { "克里特岛", "科孚岛", "萨索斯岛", "斯基亚索斯岛" };
// 每个序列中点的X坐标
List<double[]> x = new ArrayList<double[]>();
for (int i = 0; i < titles.length; i++) {
x.add(new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 });
}
// titles数组中每个标识物对应的线条
List<double[]> values = new ArrayList<double[]>();
// 克里特岛的点的y坐标
values.add(new double[] { 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4, 26.1, 23.6, 20.3, 17.2, 13.9 });
// 科孚岛的点的y坐标
values.add(new double[] { 10, 10, 12, 15, 20, 24, 26, 26, 23, 18, 14, 11 });
// 萨索斯岛的点的y坐标
values.add(new double[] { 5, 5.3, 8, 12, 17, 22, 24.2, 24, 19, 15, 9, 6 });
// 斯基亚索斯岛的点的y坐标
values.add(new double[] { 9, 10, 11, 15, 19, 23, 26, 25, 22, 18, 13, 10 });
mDataset = buildDataset(titles, x, values);
}
/*********************
* 当Activity失去焦点的时候用来保存数据的方法
*/
@Override
protected void onSaveInstanceState(Bundle outState) {
Log.i("onSaveInstanceState", "onSaveInstanceState");
super.onSaveInstanceState(outState);
outState.putSerializable("dataset", mDataset);
outState.putSerializable("renderer", mRenderer);
outState.putSerializable("current_series", mCurrentSeries);
outState.putSerializable("current_renderer", mCurrentRenderer);
}
/*********************
* 当Activity重新获取焦点的时，取回之前保存的数据
*/
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
Log.i("onRestoreInstanceState", "onRestoreInstanceState");
super.onRestoreInstanceState(savedInstanceState);
mDataset = (XYMultipleSeriesDataset) savedInstanceState.getSerializable("dataset");
mRenderer = (XYMultipleSeriesRenderer) savedInstanceState.getSerializable("renderer");
mCurrentSeries = (XYSeries) savedInstanceState.getSerializable("current_series");
mCurrentRenderer = (XYSeriesRenderer) savedInstanceState.getSerializable("current_renderer");
}
@Override
protected void onResume() {
Log.i("onResume", "onResume");
super.onResume();
if (mChartView == null) {
LinearLayout layout = (LinearLayout) findViewById(R.id.chart);
mChartView = ChartFactory.getLineChartView(this, mDataset, mRenderer);
mRenderer.setClickEnabled(true);// 设置图表是否允许点击
// 设置点的缓冲半径值(在某点附件点击时,多大范围内都算点击这个点)
mRenderer.setSelectableBuffer(10);
mChartView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 这段代码处理点击一个点后,获得所点击的点在哪个序列中以及点的坐标.
// -->start
SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();
double[] xy = mChartView.toRealPoint(0);
if (seriesSelection == null) {
Toast.makeText(LineChartActivity.this, "没有图表元素被点击", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(LineChartActivity.this, "图表元素系列指数 " + seriesSelection.getSeriesIndex() + " 数据点指数 " + seriesSelection.getPointIndex() + " 被点击了" + " 最近点值X=" + seriesSelection.getXValue() + ", 最近点值Y=" + seriesSelection.getValue() + " 点击点值X=" + (float) xy[0] + ", 点击点值Y=" + (float) xy[1], Toast.LENGTH_SHORT).show();
}
}
// -->end
});
mChartView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();
if (seriesSelection == null) {
Toast.makeText(LineChartActivity.this, "No chart element was long pressed", Toast.LENGTH_SHORT);
return false; // no chart element was long pressed, so
// let something
// else handle the event
} else {
Toast.makeText(LineChartActivity.this, "Chart element in series index " + seriesSelection.getSeriesIndex() + " data point index " + seriesSelection.getPointIndex() + " was long pressed", Toast.LENGTH_SHORT);
return true; // the element was long pressed - the event
// has been
// handled
}
}
});
// 这段代码处理放大缩小
// -->start
mChartView.addZoomListener(new ZoomListener() {
public void zoomApplied(ZoomEvent e) {
String type = "out";
if (e.isZoomIn()) {
type = "in";
}
System.out.println("Zoom " + type + " rate " + e.getZoomRate());
}
public void zoomReset() {
System.out.println("Reset");
}
}, true, true);
// -->end
// 设置拖动图表时后台打印出图表坐标的最大最小值.
mChartView.addPanListener(new PanListener() {
public void panApplied() {
System.out.println("New X range=[" + mRenderer.getXAxisMin() + ", " + mRenderer.getXAxisMax() + "], Y range=[" + mRenderer.getYAxisMax() + ", " + mRenderer.getYAxisMax() + "]");
}
});
layout.addView(mChartView, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
boolean enabled = mDataset.getSeriesCount() > 0;
} else {
mChartView.repaint();
}
}
}