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小編這次要給大家分享的是Android如何實(shí)現(xiàn)條形對(duì)比統(tǒng)計(jì)圖,文章內(nèi)容豐富,感興趣的小伙伴可以來(lái)了解一下,希望大家閱讀完這篇文章之后能夠有所收獲。
本文實(shí)例為大家分享了Android自定義條形對(duì)比統(tǒng)計(jì)圖的具體代碼,供大家參考,具體內(nèi)容如下
一、測(cè)試截圖
二、實(shí)現(xiàn)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 自定義數(shù)據(jù)中心旅客分析變化趨勢(shì)圖 * @Descripation <br> * 1、根據(jù)用戶提供的數(shù)據(jù)(兩組float[]數(shù))智能繪制數(shù)據(jù)的對(duì)比條形圖。<br> * 2、繪制圖表信息:邊框、表名、建立二維坐標(biāo)系、刻度數(shù)量、刻度值、單位、網(wǎng)絡(luò)線、圖例、數(shù)據(jù)系列。<br> * 3、其中Y軸的最大刻度值是用戶所提供數(shù)據(jù)中float[]的最大值,分度值是最大刻度值與刻度數(shù)目的比。<br> * 4、繪制用戶數(shù)據(jù)對(duì)比條形圖:?jiǎn)?dòng)線程,遍歷數(shù)組值,不斷在原圖上刷新。<br> * @author Freedoman * @date 2014-9-17 * @version 1.0 */ public class DataCenterCustomBarChart extends View { // 框架起點(diǎn)坐標(biāo)、中心坐標(biāo)、寬高 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; // 二維坐標(biāo)系原點(diǎn)坐標(biāo) private final int ORIGIN_X = FRAME_X + 100; private final int ORIGIN_Y = FRAME_Y + FRAME_HEIGHT - 100; // XY軸終點(diǎn)坐標(biāo) 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軸刻度數(shù) private int countX; private int countY; // XY軸分度值、真實(shí)數(shù)據(jù)分度值 private float intervalX; private float intervalY; private float intervalPress; // 單位名稱 private String nameX; private String nameY; // 圖表名稱 private String chartTitle; // 用戶數(shù)據(jù) private int[] data1; private int[] data2; private int currentPosition; /** * 用戶建立圖表 * * @param context * @param chartTitle * 表名稱 * @param nameXAxis * X軸單位 * @param nameYAxis * Y軸單位 * @param countY * Y軸刻度數(shù)目 * @param thisYearWeekPerson * 用戶數(shù)據(jù) * @param lastYearWeekPerson * 用戶數(shù)據(jù) */ public DataCenterCustomBarChart(Context context, String chartTitle, String nameXAxis, String nameYAxis, int countY, int[] thisYearWeekPerson, int[] lastYearWeekPerson) { super(context); this.chartTitle = chartTitle; // x軸刻度數(shù)量以用戶數(shù)據(jù)最大數(shù)據(jù)為依據(jù),y軸刻度數(shù)量由用戶來(lái)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; // 計(jì)算XY軸分度值 = 軸長(zhǎng)/刻度數(shù) this.intervalX = (XAXIS_X - ORIGIN_X) / countX; this.intervalY = (ORIGIN_Y - YAXIS_Y) / countY; // 計(jì)算用戶數(shù)據(jù)分度值 = 用戶數(shù)據(jù)最大值/ 刻度數(shù) float max1 = findMaxData(thisYearWeekPerson); float max2 = findMaxData(lastYearWeekPerson); this.intervalPress = (max1 > max2 ? max1 : max2) / countY; // startDrawDynomicBar(); } /** * 動(dòng)態(tài)繪制任務(wù) */ 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); } /** * 繪制圖表 */ @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); } /** * 初始化圖表基本信息<br> * 表名、坐標(biāo)系、刻度數(shù)量、刻度值、網(wǎng)絡(luò)線、圖例、數(shù)據(jù)系列 * * @param canvas */ private void initAXIS(Canvas canvas, Paint paint, String chartTitle) { // 畫(huà)邊框 paint.setColor(Color.GRAY); paint.setStyle(Paint.Style.STROKE); paint.setStrokeWidth(6); canvas.drawRect(FRAME_X, FRAME_Y, FRAME_WIDTH, FRAME_HEIGHT, paint); // 畫(huà)坐標(biāo)軸 paint.setColor(Color.BLACK); paint.setStyle(Paint.Style.STROKE); paint.setStrokeWidth(5); // X軸及方向箭頭 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軸及方向箭頭 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); // 圖表名稱(2014年五月第一周) paint.setColor(Color.BLACK); paint.setStyle(Paint.Style.FILL); paint.setTextSize(20);// 設(shè)置字體大小 paint.setStrokeWidth(2); canvas.drawText(chartTitle, FRAME_CENTER_X - 100, FRAME_Y + 30, paint); // 繪制數(shù)據(jù)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); // 畫(huà)網(wǎng)格線 paint.setColor(Color.GRAY); paint.setStyle(Paint.Style.STROKE); paint.setStrokeWidth(2); // 橫線(從x軸依次向上畫(huà)) for (int i = 0; i <= countY; i++) { canvas.drawLine(ORIGIN_X, ORIGIN_Y - i * intervalY, XAXIS_X, ORIGIN_Y - i * intervalY, paint); } // 豎線(從y軸依次向右畫(huà)) for (int i = 0; i <= countX; i++) { canvas.drawLine(ORIGIN_X + i * intervalX, ORIGIN_Y, ORIGIN_X + i * intervalX, YAXIS_Y, paint); } // X軸刻度值(沿X軸方向1、2、3...),軸名稱 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軸刻度值(沿Y軸方向,用戶提供的數(shù)據(jù))軸名稱 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); } /** * 繪制data1變化趨勢(shì)線 <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) { // 繪制data1的動(dòng)態(tài)條形 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); } } /** * 繪制data2變化趨勢(shì)線 */ @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) { // 繪制data2的動(dòng)態(tài)條形 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); } } /** * 查找數(shù)組的最大值 * * @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; } /** * 計(jì)算今年游客數(shù)相對(duì)去年的增長(zhǎng)率 * * @return float 增長(zhǎng)率百分?jǐn)?shù) */ 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; } /** * 統(tǒng)計(jì)一周總?cè)藬?shù) * * @return int 人數(shù) */ public int getSumWeek() { int sum = 0; for (int i = 0; i < data1.length; i++) { sum += data1[i]; } return sum; } /** * 統(tǒng)計(jì)一周平均每天旅客數(shù)量 * * @return int */ public int getAverageWeek() { return getSumWeek() / data1.length; } }
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