android自定义等级评分圆形进度条
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2024-01-15 21:18:28
本文实例为大家分享了android评分圆形进度条的具体代码,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.tim...
本文实例为大家分享了android评分圆形进度条的具体代码,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.view.motionevent; import android.view.view; /** * @name gradeprogressbar * @descripation 自定义等级评分圆形进度条,用于设备数据统计页面一键评分<br> * 1、初始化边界宽度、中心坐标和外环、内环半径,各种画笔。<br> * 2、默认最大进度为100,目标进度由用户来指定。<br> * 3、锁定一个内圆环为可点击区域。 <br> * 4、点击组件时,调用start()方法启动计时器,重绘界面。<br> * @author freedoman * @date 2014-10-29 * @version 1.0 */ public class gradeprogressbar extends view { private static final string tag = "circleprogressbar"; /** * 边界宽度、中心坐标和外环、内环半径 */ private float boundswidth; private float centerpoint; private float overradius; private float radius; /** * 最大进度、当前进度、是否显示进度文本 */ private float maxprogress = 100; private float targetprogress; private int curprogress; /** * 几种画笔 */ private paint overroundpaint; private paint roundpaint; private paint progressroundpaint; private paint progresstextpaint; private paint textpaint; /** * 可点击区域的边界 */ private float clickboundslow; private float clickboundshigh; private onprogresschangedlistener listener; public gradeprogressbar(context context) { this(context, null); } public gradeprogressbar(context context, attributeset attrs) { this(context, attrs, 0); } public gradeprogressbar(context context, attributeset attrs, int defstyleattr) { super(context, attrs, defstyleattr); this.initialize(); } /** * 初始化 */ private void initialize() { curprogress = 0; int whitecolor = color.rgb(0xf0, 0xf0, 0xf0); // 外环画笔 overroundpaint = new paint(); overroundpaint.setcolor(whitecolor); overroundpaint.setstyle(paint.style.stroke); overroundpaint.setstrokewidth(8); overroundpaint.setantialias(true); // 内环画笔 roundpaint = new paint(); roundpaint.setcolor(color.gray); roundpaint.setstrokewidth(30); roundpaint.setstyle(paint.style.stroke); roundpaint.setantialias(true); // 进度环画笔(除颜色外同于内环) progressroundpaint = new paint(); progressroundpaint.setcolor(color.rgb(0xff, 0x92, 0x24)); progressroundpaint.setstrokewidth(20); progressroundpaint.setstyle(paint.style.stroke); roundpaint.setantialias(true); // 进度文本画笔 progresstextpaint = new paint(); progresstextpaint.setcolor(whitecolor); progresstextpaint.setstyle(paint.style.stroke); progresstextpaint.setstrokewidth(0); progresstextpaint.settextsize(80); progresstextpaint.settypeface(typeface.default_bold); // 文本画笔 textpaint = new paint(); textpaint.setcolor(whitecolor); textpaint.setstyle(paint.style.stroke); textpaint.setstrokewidth(0); textpaint.settextsize(40); textpaint.settypeface(typeface.default_bold); } @override protected void onmeasure(int widthmeasurespec, int heightmeasurespec) { super.onmeasure(widthmeasurespec, heightmeasurespec); // 取当前布局的最短边作为边框的长度 float width = getwidth(); float heigh = getheight(); boundswidth = width <= heigh ? width : heigh; // 中心点 centerpoint = boundswidth / 2; // 外环半径 overradius = centerpoint - 20; // 内环半径 radius = overradius - 25; // 内环所在区域(正方形)锁定为可点击区域 clickboundslow = centerpoint - radius; clickboundshigh = centerpoint + radius; } /** * 启动进度动画 */ public void start() { curprogress = 0; if (targetprogress == 0) { targetprogress = 66; } 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 protected void ondraw(canvas canvas) { super.ondraw(canvas); // 外环 canvas.drawcircle(centerpoint, centerpoint, overradius, overroundpaint); // 内环 canvas.drawcircle(centerpoint, centerpoint, radius, roundpaint); // 进度环 rectf oval = new rectf(centerpoint - radius, centerpoint - radius, centerpoint + radius, centerpoint + radius); float curarc = 360 * curprogress / maxprogress; canvas.drawarc(oval, 0, curarc, false, progressroundpaint); // 环中心进度文本 int curpercent = (int) ((curprogress / maxprogress) * 100); float textwidth = progresstextpaint.measuretext(curpercent + "%"); canvas.drawtext(curpercent + "%", centerpoint - textwidth / 2, centerpoint, progresstextpaint); if (curpercent == 0) { // 暂未评级 float w = textpaint.measuretext("暂未评级"); canvas.drawtext("暂未评级", centerpoint - w / 2, centerpoint + 40, textpaint); } else if (curpercent < targetprogress) { // 评级中... float w = textpaint.measuretext("评级中..."); canvas.drawtext("评级中...", centerpoint - w / 2, centerpoint + 40, textpaint); } else if (curpercent == targetprogress) { // 评级完成 float w = textpaint.measuretext("评级完成"); canvas.drawtext("评级完成", centerpoint - w / 2, centerpoint + 40, textpaint); } // 对外传递数据 if (listener != null) { listener.progresschanged(gradeprogressbar.this, curprogress); } } public synchronized float getmaxprogress() { return maxprogress; } /** * 设置进度的最大值 * * @param max */ public synchronized void setmaxprogress(float max) { if (max < 0) { throw new illegalargumentexception("max not less than 0"); } this.maxprogress = max; } /** * 获取进度.需要同步 * * @return */ public synchronized float getprogress() { return targetprogress; } /** * 设置进度,此为线程安全控件,由于考虑多线的问题,需要同步 刷新界面调用postinvalidate()能在非ui线程刷新 * * @param progress */ public synchronized void setprogress(float progress) { if (progress < 0) { throw new illegalargumentexception("progress not less than 0"); } if (progress > maxprogress) { progress = maxprogress; } if (progress <= maxprogress) { this.targetprogress = progress; } } public void setonprogresschangedlistener(onprogresschangedlistener listener) { if (listener == null) { this.listener = listener; } } /** * 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 > clickboundslow && x < clickboundshigh && y > clickboundslow && y < clickboundshigh) { start(); } return super.ontouchevent(event); } /** * @name onprogresschangedlistener * @descripation 对外接口,提供当前旋转进度<br> * 1、<br> * 2、<br> * @author freedoman * @date 2014-10-29 * @version 1.0 */ public interface onprogresschangedlistener { public void progresschanged(gradeprogressbar circleprogressbar, int curprogress); } }
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。
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