android自定义环形统计图动画

本文实例为大家分享了android自定义环形统计图动画的具体代码，供大家参考，具体内容如下

一、测试截图

二、实现原理 

package com.freedomanlib; 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.graphics.RectF; import android.graphics.Typeface; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.View; /** * @name 自定义车辆数据统计比重环 * 1、比重环由底环（灰色）、里程环（红色）、平均速度环（黄色）、行驶时间环（蓝色）、超速次数环（绿色）、环中间评级、指示器组成 * ，其中四个数据统计环和底环是同心圆、圆心处有评分文本，圆环外是四个统计指示器。<br> * 2、四个统计环是四个弧线，弧度由外界提供数据，并动态显示在界面上。<br> * 3、评分等级分为三种：未评分、正在评分、评分完成，当用户点击中间区域时开启评分，评分结束自动停止。<br> * 4、外侧对应的四个指示器上结构上包括：指示器位置的小圆圈、折线连接线、指示文本、文本数据显示具体的数值。<br> * * @author Freedoman * @date 2014-10-27 */ public class CirStatisticGraph extends View { private static final String TAG = "CirStatisticGraph"; /** * @name CenterPoint * @Descripation 中心点<br> */ class CenterPoint { float x; float y; } /** * 边界宽高、中心坐标、外环和内环半径 */ private float boundsWidth; private float boundsHeigh; private CenterPoint centerPoint = new CenterPoint(); private float radius; private float paintWidth; private float genPaintWidth; /** * 几种不同的画笔 */ private Paint defaultPaint; private Paint genPaint; private Paint progressTextPaint; private Paint flagPaint; /** * 进度 */ private int curProgress; private int targetProgress = 88; private boolean complete; private int mileage = 128; private int averageSpeed = 78; private float goTime = 1.5f; private int overSpeedCount = 3; /** * 构造 * * @param context */ public CirStatisticGraph(Context context) { this(context, null); } public CirStatisticGraph(Context context, AttributeSet attrs) { super(context, attrs, 0); } public CirStatisticGraph(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); this.initialize(); } /** * 初始化 */ private void initialize() { // 底环画笔 defaultPaint = new Paint(); defaultPaint.setColor(Color.argb(0xEE, 0x8E, 0x8E, 0x8E)); defaultPaint.setStyle(Paint.Style.STROKE); defaultPaint.setStrokeWidth(paintWidth); defaultPaint.setAntiAlias(true); // 比重环画笔 genPaint = new Paint(); genPaint.setStyle(Paint.Style.STROKE); genPaint.setStrokeWidth(genPaintWidth); genPaint.setAntiAlias(true); // 中心进度文本和评级画笔 progressTextPaint = new Paint(); progressTextPaint.setColor(Color.WHITE); progressTextPaint.setStyle(Paint.Style.STROKE); progressTextPaint.setStrokeWidth(0); progressTextPaint.setTypeface(Typeface.DEFAULT_BOLD); // 指示器画笔 flagPaint = new Paint(); flagPaint.setColor(Color.WHITE); flagPaint.setStyle(Paint.Style.STROKE); flagPaint.setStrokeWidth(3); flagPaint.setAntiAlias(true); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); // 绘制区域的宽高 boundsWidth = getWidth(); boundsHeigh = getHeight(); centerPoint.x = boundsWidth / 2; centerPoint.y = boundsHeigh / 2; radius = boundsHeigh * 1 / 3; paintWidth = 50; genPaintWidth = paintWidth / 7; initialize(); } /** * 启动进度动画 */ public void start() { curProgress = 0; if (targetProgress == 0) { targetProgress = 88; } final Timer timer = new Timer(); TimerTask timerTask = new TimerTask() { @Override public void run() { curProgress++; if (curProgress == targetProgress) { timer.cancel(); } postInvalidate(); } }; timer.schedule(timerTask, 0, 20); } @SuppressLint("DrawAllocation") @Override public void onDraw(Canvas canvas) { super.onDraw(canvas); // 底环（灰色） canvas.drawCircle(centerPoint.x, centerPoint.y, radius, defaultPaint); // 很重要的一个半径(最外层环即里程环的半径) float sroundRadius = radius + paintWidth / 2 - genPaintWidth / 2; // 里程比重环（红色） genPaint.setColor(Color.argb(0xEE, 0xFF, 0x35, 0x9A)); RectF oval1 = new RectF(centerPoint.x - sroundRadius, centerPoint.y - sroundRadius, centerPoint.x + sroundRadius, centerPoint.y + sroundRadius); canvas.drawArc(oval1, -90, 300, false, genPaint); // 里程比重环的指示器位置（勾股定理计算坐标） float temp = sroundRadius; float relativePoint = (float) Math.sqrt(temp * temp / 2); canvas.drawCircle(centerPoint.x - relativePoint, centerPoint.y - relativePoint, radius / 12, flagPaint); // 连线 float[] pts1 = new float[8]; pts1[0] = centerPoint.x - relativePoint - radius / 24; pts1[1] = centerPoint.y - relativePoint - radius / 24; pts1[2] = centerPoint.x - relativePoint - 80; pts1[3] = centerPoint.y - relativePoint - 40; pts1[4] = pts1[2]; pts1[5] = pts1[3]; pts1[6] = pts1[4] - 50; pts1[7] = pts1[5]; canvas.drawLines(pts1, flagPaint); // 文本 progressTextPaint.setTextSize(30); String txt = "里程"; float wt = progressTextPaint.measureText(txt); canvas.drawText(txt, pts1[6] - wt - 10, pts1[7] + 15, progressTextPaint); if (complete) { canvas.drawText(mileage + "km", pts1[6] - wt - 10, pts1[7] + 50, progressTextPaint); } // 平均速度环（黄色） genPaint.setColor(Color.argb(0xEE, 0xF7, 0x50, 0x00)); RectF oval2 = new RectF(centerPoint.x - sroundRadius + 2 * genPaintWidth, centerPoint.y - sroundRadius + 2 * genPaintWidth, centerPoint.x + sroundRadius - 2 * genPaintWidth, centerPoint.y + sroundRadius - 2 * genPaintWidth); canvas.drawArc(oval2, 0, 280, false, genPaint); // 平均速度环的指示器位置 temp = sroundRadius - 2 * genPaintWidth; relativePoint = (float) Math.sqrt(temp * temp / 2); canvas.drawCircle(centerPoint.x + relativePoint, centerPoint.y - relativePoint, radius / 12, flagPaint); // 连接线 pts1 = new float[8]; pts1[0] = centerPoint.x + relativePoint + radius / 24; pts1[1] = centerPoint.y - relativePoint - radius / 24; pts1[2] = centerPoint.x + relativePoint + 80; pts1[3] = centerPoint.y - relativePoint - 40; pts1[4] = pts1[2]; pts1[5] = pts1[3]; pts1[6] = pts1[4] + 50; pts1[7] = pts1[5]; canvas.drawLines(pts1, flagPaint); // 文本 txt = "平均速度"; wt = progressTextPaint.measureText(txt); canvas.drawText(txt, pts1[6] + 10, pts1[7] + 15, progressTextPaint); if (complete) { canvas.drawText(averageSpeed + "km/h", pts1[6] + 10, pts1[7] + 50, progressTextPaint); } // 行驶时间环（蓝色）和指示 genPaint.setColor(Color.argb(0xEE, 0x00, 0x72, 0xE3)); RectF oval3 = new RectF(centerPoint.x - sroundRadius + 4 * genPaintWidth, centerPoint.y - sroundRadius + 4 * genPaintWidth, centerPoint.x + sroundRadius - 4 * genPaintWidth, centerPoint.y + sroundRadius - 4 * genPaintWidth); canvas.drawArc(oval3, 90, 270, false, genPaint); // 行驶时间环指示器的位置 temp = sroundRadius - 4 * genPaintWidth; relativePoint = (float) Math.sqrt(temp * temp / 2); canvas.drawCircle(centerPoint.x - relativePoint, centerPoint.y + relativePoint, radius / 12, flagPaint); // 连接线和文本 pts1 = new float[8]; pts1[0] = centerPoint.x - relativePoint - radius / 24; pts1[1] = centerPoint.y + relativePoint + radius / 24; pts1[2] = centerPoint.x - relativePoint - 80; pts1[3] = centerPoint.y + relativePoint + 40; pts1[4] = pts1[2]; pts1[5] = pts1[3]; pts1[6] = pts1[4] - 50; pts1[7] = pts1[5]; canvas.drawLines(pts1, flagPaint); txt = "行驶时间"; wt = progressTextPaint.measureText(txt); canvas.drawText(txt, pts1[6] - wt - 10, pts1[7] + 15, progressTextPaint); if (complete) { canvas.drawText(goTime + "h", pts1[6] - wt - 10, pts1[7] - 20, progressTextPaint); } // 超速次数环（绿色） genPaint.setColor(Color.argb(0xEE, 0x00, 0xEC, 0x00)); RectF oval4 = new RectF(centerPoint.x - sroundRadius + 6 * genPaintWidth, centerPoint.y - sroundRadius + 6 * genPaintWidth, centerPoint.x + sroundRadius - 6 * genPaintWidth, centerPoint.y + sroundRadius - 6 * genPaintWidth); canvas.drawArc(oval4, 0, 290, false, genPaint); // 超速次数环指示器的位置 temp = sroundRadius - 6 * genPaintWidth; relativePoint = (float) Math.sqrt(temp * temp / 2); canvas.drawCircle(centerPoint.x + relativePoint, centerPoint.y + relativePoint, radius / 12, flagPaint); // 连接线 pts1 = new float[8]; pts1[0] = centerPoint.x + relativePoint + radius / 24; pts1[1] = centerPoint.y + relativePoint + radius / 24; pts1[2] = centerPoint.x + relativePoint + 80; pts1[3] = centerPoint.y + relativePoint + 40; pts1[4] = pts1[2]; pts1[5] = pts1[3]; pts1[6] = pts1[4] + 50; pts1[7] = pts1[5]; canvas.drawLines(pts1, flagPaint); // 文本 txt = "超速次数"; wt = progressTextPaint.measureText(txt); canvas.drawText(txt, pts1[6] + 10, pts1[7] + 15, progressTextPaint); if (complete) { canvas.drawText(overSpeedCount + "次", pts1[6] + 10, pts1[7] - 20, progressTextPaint); } // 环中心进度文本（动态迭加的） int curPercent = curProgress; progressTextPaint.setTextSize(60); float ww = progressTextPaint.measureText(curPercent + "%"); canvas.drawText(curPercent + "%", centerPoint.x - ww / 2, centerPoint.y, progressTextPaint); // 评级提示 progressTextPaint.setTextSize(25); float w = 0; String text = ""; if (curPercent == 0) { // 暂未评级 text = "暂未评级"; w = progressTextPaint.measureText(text); complete = false; } else if (curPercent < targetProgress) { // 评级中... text = "评级中..."; w = progressTextPaint.measureText(text); } else if (curPercent == targetProgress) { // 评级完成 text = "评级完成"; w = progressTextPaint.measureText(text); complete = true; postInvalidate(); } canvas.drawText(text, centerPoint.x - w / 2, centerPoint.y + 40, progressTextPaint); } /** * 点击评分区域，进行评分 * * @param event * @return */ @Override public boolean onTouchEvent(MotionEvent event) { float x = event.getX(); float y = event.getY(); if (x > centerPoint.x - radius && x < centerPoint.x + radius && y > centerPoint.y - radius && y < centerPoint.y + radius) { Log.i(TAG, ">>>"); start(); } return super.onTouchEvent(event); } } 您可能感兴趣的文章:Android自定义条形对比统计图Android自定义View实现多边形统计图示例代码Android自定义View——扇形统计图的实现代码Android编程实现canvas绘制饼状统计图功能示例【自动适应条目数量与大小】Android编程实现canvas绘制柱状统计图功能【自动计算宽高及分度值、可左右滑动】Android 实现会旋转的饼状统计图实例代码Android自定义控件横向柱状统计图

统计图 动画 Android