我要评论本文实例为大家分享了android自定义条形对比统计图的具体代码，供大家参考，具体内容如下
一、测试截图
二、实现方法
package com.xtravel.widget;
import java.util.timer;
import java.util.timertask;
import android.annotation.suppresslint;
import android.content.context;
import android.graphics.canvas;
import android.graphics.color;
import android.graphics.paint;
import android.view.view;
/**
* @name 自定义数据中心旅客分析变化趋势图
* @descripation <br>
* 1、根据用户提供的数据（两组float[]数）智能绘制数据的对比条形图。<br>
* 2、绘制图表信息：边框、表名、建立二维坐标系、刻度数量、刻度值、单位、网络线、图例、数据系列。<br>
* 3、其中y轴的最大刻度值是用户所提供数据中float[]的最大值，分度值是最大刻度值与刻度数目的比。<br>
* 4、绘制用户数据对比条形图：启动线程，遍历数组值，不断在原图上刷新。<br>
* @author freedoman
* @date 2014-9-17
* @version 1.0
*/
public class datacentercustombarchart extends view {
// 框架起点坐标、中心坐标、宽高
private final int frame_x = 20;
private final int frame_y = 20;
private final int frame_width = 1000;
private final int frame_height = 350;
private final int frame_center_x = frame_width / 2 + frame_x;
private final int frame_center_y = frame_height / 2 + frame_y;
// 二维坐标系原点坐标
private final int origin_x = frame_x + 100;
private final int origin_y = frame_y + frame_height - 100;
// xy轴终点坐标
private final int xaxis_x = frame_x + frame_width - 200;
private final int xaxis_y = origin_y;
private final int yaxis_x = origin_x;
private final int yaxis_y = frame_y + 50;
// xy轴刻度数
private int countx;
private int county;
// xy轴分度值、真实数据分度值
private float intervalx;
private float intervaly;
private float intervalpress;
// 单位名称
private string namex;
private string namey;
// 图表名称
private string charttitle;
// 用户数据
private int[] data1;
private int[] data2;
private int currentposition;
/**
* 用户建立图表
*
* @param context
* @param charttitle
* 表名称
* @param namexaxis
* x轴单位
* @param nameyaxis
* y轴单位
* @param county
* y轴刻度数目
* @param thisyearweekperson
* 用户数据
* @param lastyearweekperson
* 用户数据
*/
public datacentercustombarchart(context context, string charttitle,
string namexaxis, string nameyaxis, int county,
int[] thisyearweekperson, int[] lastyearweekperson) {
super(context);
this.charttitle = charttitle;
// x轴刻度数量以用户数据最大数据为依据,y轴刻度数量由用户来指定
this.countx = thisyearweekperson.length > lastyearweekperson.length ? thisyearweekperson.length
: lastyearweekperson.length;
this.county = county;
this.namex = namexaxis;
this.namey = nameyaxis;
this.data1 = thisyearweekperson;
this.data2 = lastyearweekperson;
// 计算xy轴分度值 = 轴长/刻度数
this.intervalx = (xaxis_x - origin_x) / countx;
this.intervaly = (origin_y - yaxis_y) / county;
// 计算用户数据分度值 = 用户数据最大值/ 刻度数
float max1 = findmaxdata(thisyearweekperson);
float max2 = findmaxdata(lastyearweekperson);
this.intervalpress = (max1 > max2 ? max1 : max2) / county;
// startdrawdynomicbar();
}
/**
* 动态绘制任务
*/
public void freshdynomicbar() {
final timer timer = new timer();
timertask timertask = new timertask() {
@override
public void run() {
currentposition++;
postinvalidate();
if (currentposition == countx) {
timer.cancel();
}
}
};
timer.schedule(timertask, 100, 800);
}
/**
* 绘制图表
*/
@suppresslint("drawallocation")
public void ondraw(canvas canvas) {
super.ondraw(canvas);
canvas.drawcolor(color.white);
paint paint = new paint();
initaxis(canvas, paint, charttitle);
drawdynamicbar1(canvas, paint, data1);
drawdynamicbar2(canvas, paint, data2);
}
/**
* 初始化图表基本信息<br>
* 表名、坐标系、刻度数量、刻度值、网络线、图例、数据系列
*
* @param canvas
*/
private void initaxis(canvas canvas, paint paint, string charttitle) {
// 画边框
paint.setcolor(color.gray);
paint.setstyle(paint.style.stroke);
paint.setstrokewidth(6);
canvas.drawrect(frame_x, frame_y, frame_width, frame_height, paint);
// 画坐标轴
paint.setcolor(color.black);
paint.setstyle(paint.style.stroke);
paint.setstrokewidth(5);
// x轴及方向箭头
canvas.drawline(origin_x, origin_y, xaxis_x, xaxis_y, paint);
canvas.drawline(xaxis_x, xaxis_y, xaxis_x - 10, xaxis_y - 10, paint);
canvas.drawline(xaxis_x, xaxis_y, xaxis_x - 10, xaxis_y + 10, paint);
// y轴及方向箭头
canvas.drawline(origin_x, origin_y, yaxis_x, yaxis_y, paint);
canvas.drawline(yaxis_x, yaxis_y, yaxis_x - 10, yaxis_y + 10, paint);
canvas.drawline(yaxis_x, yaxis_y, yaxis_x + 10, yaxis_y + 10, paint);
// 图表名称(2014年五月第一周)
paint.setcolor(color.black);
paint.setstyle(paint.style.fill);
paint.settextsize(20);// 设置字体大小
paint.setstrokewidth(2);
canvas.drawtext(charttitle, frame_center_x - 100, frame_y + 30, paint);
// 绘制数据系列20*20矩形(今年、去年)
paint.setcolor(color.cyan);
canvas.drawrect(frame_width - 100, frame_center_y - 30,
frame_width - 70, frame_center_y, paint);
canvas.drawtext("今年", frame_width - 60, frame_center_y, paint);
paint.setcolor(color.magenta);
canvas.drawrect(frame_width - 100, frame_center_y, frame_width - 70,
frame_center_y + 30, paint);
canvas.drawtext("去年", frame_width - 60, frame_center_y + 30, paint);
// 画网格线
paint.setcolor(color.gray);
paint.setstyle(paint.style.stroke);
paint.setstrokewidth(2);
// 横线(从x轴依次向上画)
for (int i = 0; i <= county; i++) {
canvas.drawline(origin_x, origin_y - i * intervaly, xaxis_x,
origin_y - i * intervaly, paint);
}
// 竖线(从y轴依次向右画)
for (int i = 0; i <= countx; i++) {
canvas.drawline(origin_x + i * intervalx, origin_y, origin_x + i
* intervalx, yaxis_y, paint);
}
// x轴刻度值(沿x轴方向1、2、3...),轴名称
paint.setcolor(color.blue);
paint.setstyle(paint.style.fill);
paint.setstrokewidth(2);
paint.settextsize(30);
for (int i = 0; i <= countx; i++) {
canvas.drawtext("" + i, origin_x + i * intervalx, origin_y + 50,
paint);
}
paint.settextsize(20);
// y轴刻度值(沿y轴方向，用户提供的数据)轴名称
for (int i = 1; i <= county; i++) {
canvas.drawtext("" + (int) (i * intervalpress), origin_x - 80,
origin_y - i * intervaly + 5, paint);
}
paint.settextsize(20);
canvas.drawtext("(" + namex + ")", xaxis_x + 40, xaxis_y + 50, paint);
canvas.drawtext("(" + namey + ")", yaxis_x - 30, yaxis_y - 20, paint);
}
/**
* 绘制data1变化趋势线 <br>
*/
@suppresslint("resourceascolor")
private void drawdynamicbar1(canvas canvas, paint paint, int[] data) {
float currectx_data1 = origin_x + intervalx - 30;
float currecty_data1;
for (int i = 1; i < currentposition; i++, currectx_data1 += intervalx) {
// 绘制data1的动态条形
paint.setcolor(color.cyan);
currecty_data1 = data[i - 1] / intervalpress * intervaly;
canvas.drawrect(currectx_data1, origin_y - currecty_data1,
currectx_data1 + 30, origin_y, paint);
}
}
/**
* 绘制data2变化趋势线
*/
@suppresslint("resourceascolor")
private void drawdynamicbar2(canvas canvas, paint paint, int[] data) {
float currectx_data2 = origin_x + intervalx;
float currecty_data2;
for (int i = 1; i < currentposition; i++, currectx_data2 += intervalx) {
// 绘制data2的动态条形
paint.setcolor(color.magenta);
currecty_data2 = data[i - 1] / intervalpress * intervaly;
canvas.drawrect(currectx_data2, origin_y - currecty_data2,
currectx_data2 + 30, origin_y, paint);
}
}
/**
* 查找数组的最大值
*
* @param data
* @return float
*/
private int findmaxdata(int[] data) {
int max = data[0];
for (int i = 1; i < data.length; i++) {
if (data[i] > max) {
max = data[i];
}
}
return max;
}
/**
* 计算今年游客数相对去年的增长率
*
* @return float 增长率百分数
*/
public float getgrowthrate() {
float sumyear = 0, sumlastyear = 0;
for (int i = 0; i < data1.length; i++) {
sumyear += data1[i];
sumlastyear += data2[i];
}
return (sumyear - sumlastyear) / sumlastyear * 100;
}
/**
* 统计一周总人数
*
* @return int 人数
*/
public int getsumweek() {
int sum = 0;
for (int i = 0; i < data1.length; i++) {
sum += data1[i];
}
return sum;
}
/**
* 统计一周平均每天旅客数量
*
* @return int
*/
public int getaverageweek() {
return getsumweek() / data1.length;
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持移动技术网。
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