android achartengine 生成柱状图(支持修改背景)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#ffffffff"
    android:orientation="vertical" >
 
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >
 
        <LinearLayout
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_weight="1" >
 
            <Button
                android:id="@+id/single_view_btn"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="单图" />
        </LinearLayout>
 
        <LinearLayout
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_weight="1" >
 
            <Button
                android:id="@+id/double_view_btn"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="双图" />
        </LinearLayout>
    </LinearLayout>
 
    <LinearLayout
        android:id="@+id/barview_content"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >
    </LinearLayout>
 
</LinearLayout>

package cn.knight.barchart;
 
import java.util.ArrayList;
import java.util.List;
 
import org.achartengine.model.CategorySeries;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.renderer.SimpleSeriesRenderer;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
 
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.view.ViewPager.LayoutParams;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
 
public class Main extends Activity implements OnClickListener {
 
	public static String LABLE_TEXT[] = { "", "A", "B", "C", "D" };
	private LinearLayout layoutViewContent;
	private Button btn_single;
	private Button btn_total;
	private double first[] = new double[] { 30, 40, 60, 80 };
	private double second[] = new double[] { 50, 60, 88, 91 };
	private List<String> options = new ArrayList<String>();
	private boolean isSingleView;
	private BarChartView view;
 
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		isSingleView = false;
		for (String tem : LABLE_TEXT) {
			options.add(tem);
		}
		layoutViewContent = (LinearLayout) findViewById(R.id.barview_content);
		view = new BarChartView(Main.this, isSingleView);
		view.initData(first, second, options, "双柱状图");
		layoutViewContent.setBackgroundColor(0xffffffff);
		layoutViewContent.addView(view.getBarChartView());
		btn_single = (Button) findViewById(R.id.single_view_btn);
		btn_total = (Button) findViewById(R.id.double_view_btn);
		btn_single.setOnClickListener(this);
		btn_total.setOnClickListener(this);
	}
 
	@Override
	public void onClick(View v) {
		int id = v.getId();
 
		switch (id) {
			case R.id.single_view_btn:
				isSingleView = true;
				layoutViewContent.removeAllViews();
				view = new BarChartView(Main.this, isSingleView);
				view.initData(first, second, options, "单柱状图");
				layoutViewContent.addView(view.getBarChartView());
				break;
			case R.id.double_view_btn:
				isSingleView = false;
				layoutViewContent.removeAllViews();
				view = new BarChartView(Main.this, isSingleView);
				view.initData(first, second, options, "双柱状图");
				layoutViewContent.addView(view.getBarChartView());
 
				break;
		}
 
	}
 
}

package cn.knight.barchart;
 
import java.util.ArrayList;
import java.util.List;
 
import org.achartengine.ChartFactory;
import org.achartengine.chart.BarChart.Type;
import org.achartengine.model.CategorySeries;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.renderer.SimpleSeriesRenderer;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
 
import android.content.Context;
import android.graphics.Color;
import android.graphics.Paint.Align;
import android.view.View;
 
public class BarChartView {
 
	private static int margins[] = new int[] { 70, 70, 70, 70 };
	private static String[] titles = new String[] { "", "" };
	private List<double[]> values = new ArrayList<double[]>();
	private static int[] colors = new int[] { Color.RED, Color.GREEN };
	private XYMultipleSeriesRenderer renderer;
	private Context mContext;
	private String mTitle;
	private List<String> option;
	private boolean isSingleView = false;
 
	public BarChartView(Context context, boolean isSingleView) {
		this.mContext = context;
		this.isSingleView = isSingleView;
		this.renderer = new XYMultipleSeriesRenderer();
 
	}
 
	public void initData(double[] firstAnswerPercent, double[] lastAnswerPercent, List<String> option, String title) {
		this.values.add(firstAnswerPercent);
		if (!isSingleView) {
			this.values.add(lastAnswerPercent);
		}
		this.mTitle = title;
		this.option = option;
 
	}
 
	public View getBarChartView() {
		buildBarRenderer();
		setChartSettings(renderer, mTitle, "", "", 0, 6, 0, 100, Color.BLACK, Color.LTGRAY);
		renderer.getSeriesRendererAt(0).setDisplayChartValues(true);
		if(!isSingleView){
			 renderer.getSeriesRendererAt(1).setDisplayChartValues(true);
		}
		int size =  option.size();
		for (int i = 0; i < size; i++) {
			renderer.addXTextLabel(i, option.get(i));
		}
		renderer.setMargins(margins);
		renderer.setMarginsColor(0x00ffffff);
		renderer.setPanEnabled(false, false);
		renderer.setZoomEnabled(false, false);// 设置x，y方向都不可以放大或缩�?
		renderer.setZoomRate(1.0f);
		renderer.setInScroll(false);
		renderer.setBackgroundColor(0x00ffffff);
		renderer.setApplyBackgroundColor(false);
		View view = ChartFactory.getBarChartView(mContext, buildBarDataset(titles, values), renderer, Type.DEFAULT); // Type.STACKED
		view.setBackgroundColor(0x00ffffff);
		return view;
	}
 
	private XYMultipleSeriesDataset buildBarDataset(String[] titles, List<double[]> values) {
		XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
		int length = isSingleView ? (titles.length - 1) : titles.length;
		for (int i = 0; i < length; i++) {
			CategorySeries series = new CategorySeries(titles[i]);
			double[] v = values.get(i);
			int seriesLength = v.length;
			for (int k = 0; k < seriesLength; k++) {
				series.add(v[k]);
			}
			dataset.addSeries(series.toXYSeries());
		}
		return dataset;
	}
 
	protected void setChartSettings(XYMultipleSeriesRenderer renderer, String title, String xTitle, String yTitle,
			double xMin, double xMax, double yMin, double yMax, int axesColor, int labelsColor) {
		renderer.setChartTitle(title);
		renderer.setXTitle(xTitle);
		renderer.setYTitle(yTitle);
		renderer.setXAxisMin(xMin);
		renderer.setXAxisMax(xMax);
		renderer.setYAxisMin(yMin);
		renderer.setYAxisMax(yMax);
		renderer.setAxesColor(axesColor);
		renderer.setLabelsColor(labelsColor);
		renderer.setXLabels(0);
		renderer.setYLabels(10);
		renderer.setLabelsTextSize(25);
		renderer.setYLabelsAlign(Align.RIGHT);
		renderer.setXLabelsAlign(Align.CENTER);
		// renderer.setXLabelsColor(0xff000000);//设置X轴上的字体颜�?
		// renderer.setYLabelsColor(0,0xff000000);//设置Y轴上的字体颜�?
 
	}
 
	/*
	 * 初始化柱子风�?
	 */
	protected void buildBarRenderer() {
		if (null == renderer) {
			return;
		}
		renderer.setBarWidth(23);
		renderer.setBarSpacing(20);
		renderer.setAxisTitleTextSize(16);
		renderer.setChartTitleTextSize(20);
		renderer.setLabelsTextSize(15);
		renderer.setLegendTextSize(15);
		int length = isSingleView ? (colors.length - 1) : colors.length;
		for (int i = 0; i < length; i++) {
			SimpleSeriesRenderer ssr = new SimpleSeriesRenderer();
			ssr.setChartValuesTextAlign(Align.RIGHT);
			ssr.setChartValuesTextSize(15);
			ssr.setDisplayChartValues(true);
			ssr.setColor(colors[i]);
			renderer.addSeriesRenderer(ssr);
		}
	}
}