android achart 柱状图图表

android 使用开源项目achartengine-1.0.0，绘制图表。今天随记写了一个柱状图demo，先看下效果

数据是随机的。

好了 看下代码吧。

布局文件比较简单：activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"/>
    <LinearLayout
        android:id="@+id/chartlinear"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="horizontal" />
</RelativeLayout>

MainActivity中的代码：

package com.liu.achartdemo;

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.CategorySeries;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.renderer.SimpleSeriesRenderer;
import org.achartengine.renderer.XYMultipleSeriesRenderer;

import android.os.Bundle;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.Paint.Align;
import android.view.Menu;
import android.view.WindowManager.LayoutParams;
import android.widget.LinearLayout;

public class MainActivity extends Activity {
    private LinearLayout layout;
    private List<String[]> x = new ArrayList<String[]>(); // x--时间坐标值
    private List<int[]> y = new ArrayList<int[]>();// Y--订单数值
    private XYMultipleSeriesDataset dataset;
    String[] title = { "柱状图demo" };
    private String[]days = new String[12];
    private int[]sales = new int[12];
    @SuppressWarnings("deprecation")
    @Override    
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        Random rom = new Random();
        for(int i=1;i<13;i++)
        {
            days[i-1] = i + "月";
            sales[i-1] =rom.nextInt(5)*i;
        }
        
        
        x.add(days);
        y.add(sales);
        dataset = buildDataset(title, x, y);
        int[] colors = new int[] {Color.parseColor("#008000")};
        PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE };
        XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles, true);

        renderer.setMargins(new int[] { 20, 30, 10, 0 });
        setChartSettings(renderer, "", "", "Y--成交订单金额", 0, 20,Color.RED, Color.RED);                        
        GraphicalView v = ChartFactory.getBarChartView(MainActivity.this, dataset, renderer, null);
        //views.add(v);
        //v.setVisibility(View.VISIBLE);
        layout.addView(v,new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));    
        
    }
    
    private void initView() {
        // TODO Auto-generated method stub
        layout = (LinearLayout)findViewById(R.id.chartlinear);//放置统计图
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    
    
    private XYMultipleSeriesRenderer buildRenderer(int[] colors,PointStyle[] styles, boolean b) {
        // TODO Auto-generated method stub
        XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
        int length = colors.length;
        for (int i = 0; i < length; i++) {
            SimpleSeriesRenderer r = new SimpleSeriesRenderer();
            r.setColor(colors[i]);
            r.setChartValuesSpacing((float) 0.5);
//            r.setPointStyle(styles[i]);
//            r.setFillPoints(b);
            renderer.addSeriesRenderer(r);
        }
        return renderer;
    }

    @SuppressWarnings("deprecation")
    private void setChartSettings(XYMultipleSeriesRenderer renderer,
            String title, String xTitle, String yTitle, 
            int yMin, double yMax, int axesColor, int labelsColor) {
        // TODO Auto-generated method stub
        renderer.setChartTitle(title);
        renderer.setXTitle(xTitle);
        renderer.setYTitle(yTitle);
        renderer.setYAxisMin(yMin);
        renderer.setYAxisMax(yMax);
        renderer.setAxesColor(axesColor);
        renderer.setLabelsColor(labelsColor);
        renderer.setXLabels(7);
        renderer.setYLabels(20);
        renderer.setXLabelsColor(Color.BLACK);//X轴坐标颜色
        renderer.setYLabelsColor(0, Color.BLACK);
        renderer.setYLabelsAlign(Align.LEFT);
        //renderer.setPanEnabled(false, false);//设置xy轴不会因用户划动屏幕而移动
        renderer.setMarginsColor(Color.WHITE);//设置四周背景色
        renderer.setBackgroundColor(Color.WHITE);//设置背景
        renderer.setApplyBackgroundColor(true);
        renderer.setDisplayChartValues(true);//设置顶部显示数据
        renderer.setZoomButtonsVisible(true);//设置可以缩放
        renderer.setBarSpacing(0.2);//设置柱子间距
        renderer.setFitLegend(true);// 调整合适的位置
        renderer.setXAxisMin(1);
        renderer.setXAxisMax(12);
        renderer.setXLabels(0);//设置X轴不显示数字
        
        for(int i=1;i<13;i++){
            renderer.addXTextLabel((double)i, days[i-1]);
        }
        
    }

    private XYMultipleSeriesDataset buildDataset(String[] title,
            List<String[]> x, List<int[]> y) {
        // TODO Auto-generated method stub
        XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
        
        //XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
        int length = title.length; 
        for (int i = 0; i < length; i++) {
            CategorySeries series = new CategorySeries(title[i]); 
            String[] xV = (String[]) x.get(i); //获得x轴数据
            int[] yV = (int[]) y.get(i);
            int seriesLength = xV.length; 
            for (int k = 0; k < seriesLength; k++) 
            {
                //renderer.addXTextLabel(k, xV[k].toString());
                series.add(yV[k]);
            }
            dataset.addSeries(series.toXYSeries());
        }
        return dataset;
    }
}

图表标题我想大部分人都懂的，自己加就 好了