背景介绍

在Android 开发中，我们经常遇到各种各样绚丽的控件，所以，依靠我们Android本身所带的控件是远远不够的，很多时候需要我们自己定义控件，在开发的过程中，我们公司遇到了一种需要自己写的一个自定义带进度的圆形进度条，看起来非常的绚丽，当然还有一些其他的，比如：水纹形的圆形进度条等效果都是非常nice的。如果哪位朋友有实现，希望分享出来，我也好学习学习。好了多的不说，接下来，我们就来看看来如何实现圆形进度条。

原文地址：http://blog.csdn.net/xiaanming/article/details/10298163

一：先上效果图

Android 高手进阶，自定义圆形进度条_第1张图片

二：实例代码

1.自定义属性

<?xml version="1.0" encoding="utf-8"?>

ps：自定义属性呢，其实大家或许不是很明白，有些小伙伴们或许知道，我这样用，可以调用它的一个值，可以获取值，或者说赋予值，比如：你用Android 系统本身所带的控件，textview其他等，你知道他有height，width，textsize，textcolor等，这些属性，你能赋值，但是有去理解过怎样去获取值么，如果不了解，没关系，我这有一篇鸿洋写的比较详细，推荐给你：http://blog.csdn.net/lmj623565791/article/details/45022631，还在等什么，赶紧戳进去，带你装逼带你飞。

2.自定义控件

源码1：

package com.example.testdemo.view;import android.annotation.SuppressLint;import android.content.Context;import android.content.res.TypedArray;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.View;import com.example.testdemo.R;/** * 仿iphone带进度的进度条，线程安全的View，可直接在线程中更新进度 *  * @author zengtao 2015年5月12日下午7:43:32 * * */@SuppressLint("DrawAllocation")public class RoundProgressBar extends View {/** * 画笔对象的引用 */private Paint paint;/** * 圆环的颜色 */private int roundColor;/** * 圆环进度的颜色 */private int roundProgressColor;/** * 中间进度百分比的字符串的颜色 */private int textColor;/** * 中间进度百分比的字符串的字体 */private float textSize;/** * 圆环的宽度 */private float roundWidth;/** * 最大进度 */private int max;/** * 当前进度 */private int progress;/** * 是否显示中间的进度 */private boolean textIsDisplayable;/** * 进度的风格，实心或者空心 */private int style;public static final int STROKE = 0;public static final int FILL = 1;public RoundProgressBar(Context context) {this(context, null);}public RoundProgressBar(Context context, AttributeSet attrs) {this(context, attrs, 0);}public RoundProgressBar(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);paint = new Paint();TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.RoundProgressBar);// 获取自定义属性和默认值roundColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundColor, Color.rgb(228, 232, 237));roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.rgb(216, 6, 7));textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.rgb(216, 6, 7));textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 18);roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 3);max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100);textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 0);mTypedArray.recycle();}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);/** * 1.画最外层的大圆环 */int centre = getWidth() / 2; // 获取圆心的x坐标int radius = (int) (centre - roundWidth / 2); // 圆环的半径paint.setColor(roundColor); // 设置圆环的颜色paint.setStyle(Paint.Style.STROKE); // 设置空心paint.setStrokeWidth(roundWidth); // 设置圆环的宽度paint.setAntiAlias(true); // 消除锯齿canvas.drawCircle(centre, centre, radius, paint); // 画出圆环/** * 2.画进度百分比 */paint.setStrokeWidth(0);paint.setColor(textColor);paint.setTextSize(textSize);paint.setTypeface(Typeface.DEFAULT); // 设置字体// 中间的进度百分比，先转换成float在进行除法运算，不然都为0int percent = (int) (((float) progress / (float) max) * 100);float textWidth = paint.measureText(percent + "%"); // 测量字体宽度，我们需要根据字体的宽度设置在圆环中间if (textIsDisplayable && style == STROKE) { canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, paint); //画出进度百分比  }/** * 3.画圆弧 ，画圆环的进度 */// 设置进度是实心还是空心paint.setStrokeWidth(roundWidth); // 设置圆环的宽度paint.setColor(roundProgressColor); // 设置进度的颜色RectF oval = new RectF(centre - radius, centre - radius, centre + radius, centre + radius); // 用于定义的圆弧的形状和大小的界限switch (style) {case STROKE: {paint.setStyle(Paint.Style.STROKE);canvas.drawArc(oval, -90, 360 * progress / max, false, paint); // 根据进度画圆弧break;}case FILL: {paint.setStyle(Paint.Style.FILL_AND_STROKE);if (progress != 0)canvas.drawArc(oval, -90, 360 * progress / max, true, paint); // 根据进度画圆弧break;}}}public synchronized int getMax() {return max;}/** * 设置进度的最大值 *  * @param max */public synchronized void setMax(int max) {if (max < 0) {throw new IllegalArgumentException("max not less than 0");}this.max = max;}/** * 获取进度.需要同步 *  * @return */public synchronized int getProgress() {return progress;}/** * 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(int progress) {if (progress < 0) {throw new IllegalArgumentException("progress not less than 0");}if (progress > max) {progress = max;}if (progress <= max) {this.progress = progress;postInvalidate();}}public int getCricleColor() {return roundColor;}public void setCricleColor(int cricleColor) {this.roundColor = cricleColor;}public int getCricleProgressColor() {return roundProgressColor;}public void setCricleProgressColor(int cricleProgressColor) {this.roundProgressColor = cricleProgressColor;}public int getTextColor() {return textColor;}public void setTextColor(int textColor) {this.textColor = textColor;}public float getTextSize() {return textSize;}public void setTextSize(float textSize) {this.textSize = textSize;}public float getRoundWidth() {return roundWidth;}public void setRoundWidth(float roundWidth) {this.roundWidth = roundWidth;}public int getStyle() {return style;}public void setStyle(int style) {this.style = style;}}

源码2：

package com.example.testdemo.view;import android.annotation.SuppressLint;import android.content.Context;import android.content.res.TypedArray;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.View;import com.example.testdemo.R;/** * 仿iphone带进度的进度条，线程安全的View，可直接在线程中更新进度 *  * @author zengtao 2015年5月12日下午7:43:32 * * */@SuppressLint("DrawAllocation")public class RoundProgressBar2 extends View {/** * 画笔对象的引用 */private Paint paint;/** * 圆环的颜色 */private int roundColor;/** * 圆环进度的颜色 */private int roundProgressColor;/** * 中间进度百分比的字符串的颜色 */private int textColor;/** * 中间进度百分比的字符串的字体 */private float textSize;/** * 圆环的宽度 */private float roundWidth;/** * 最大进度 */private int max;/** * 当前进度 */private int progress;/** * 是否显示中间的进度 */private boolean textIsDisplayable;/** * 进度的风格，实心或者空心 */private int style;public static final int STROKE = 0;public static final int FILL = 1;public RoundProgressBar2(Context context) {this(context, null);}public RoundProgressBar2(Context context, AttributeSet attrs) {this(context, attrs, 0);}public RoundProgressBar2(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);paint = new Paint();TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.RoundProgressBar);// 获取自定义属性和默认值roundColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundColor, Color.rgb(228, 232, 237));roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.rgb(216, 6, 7));textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.rgb(216, 6, 7));textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 18);roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 3);max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100);textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 0);mTypedArray.recycle();}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);/** * 画最外层的大圆环 */int centre = getWidth() / 2; // 获取圆心的x坐标int radius = (int) (centre - roundWidth / 2); // 圆环的半径paint.setColor(roundColor); // 设置圆环的颜色paint.setStyle(Paint.Style.STROKE); // 设置空心paint.setStrokeWidth(roundWidth); // 设置圆环的宽度paint.setAntiAlias(true); // 消除锯齿canvas.drawCircle(centre, centre, radius, paint); // 画出圆环/** * 画进度百分比 */paint.setStrokeWidth(0);paint.setColor(textColor);paint.setTextSize(textSize);paint.setTypeface(Typeface.DEFAULT); // 设置字体// int percent = (int) (((float) progress / (float) max) * 100); //// 中间的进度百分比，先转换成float在进行除法运算，不然都为0float textWidth = paint.measureText("抢"); // 测量字体宽度，我们需要根据字体的宽度设置在圆环中间if (textIsDisplayable && style == STROKE) {canvas.drawText("抢", centre - textWidth / 2, centre + textSize / 2 - 4, paint); // 画出进度百分比}/** * 画圆弧 ，画圆环的进度 */// 设置进度是实心还是空心paint.setStrokeWidth(roundWidth); // 设置圆环的宽度paint.setColor(roundProgressColor); // 设置进度的颜色RectF oval = new RectF(centre - radius, centre - radius, centre + radius, centre + radius); // 用于定义的圆弧的形状和大小的界限switch (style) {case STROKE: {paint.setStyle(Paint.Style.STROKE);canvas.drawArc(oval, -90, 360 * progress / max, false, paint); // 根据进度画圆弧break;}case FILL: {paint.setStyle(Paint.Style.FILL_AND_STROKE);if (progress != 0)canvas.drawArc(oval, -90, 360 * progress / max, true, paint); // 根据进度画圆弧break;}}}public synchronized int getMax() {return max;}/** * 设置进度的最大值 *  * @param max */public synchronized void setMax(int max) {if (max < 0) {throw new IllegalArgumentException("max not less than 0");}this.max = max;}/** * 获取进度.需要同步 *  * @return */public synchronized int getProgress() {return progress;}/** * 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(int progress) {if (progress < 0) {throw new IllegalArgumentException("progress not less than 0");}if (progress > max) {progress = max;}if (progress <= max) {this.progress = progress;postInvalidate();}}public int getCricleColor() {return roundColor;}public void setCricleColor(int cricleColor) {this.roundColor = cricleColor;}public int getCricleProgressColor() {return roundProgressColor;}public void setCricleProgressColor(int cricleProgressColor) {this.roundProgressColor = cricleProgressColor;}public int getTextColor() {return textColor;}public void setTextColor(int textColor) {this.textColor = textColor;}public float getTextSize() {return textSize;}public void setTextSize(float textSize) {this.textSize = textSize;}public float getRoundWidth() {return roundWidth;}public void setRoundWidth(float roundWidth) {this.roundWidth = roundWidth;}}

ps：以上两份自定义源码，其实你仔细看，差别不是很大，就改变了一个地方，这个更改的地方，其实是在我们现在的项目中所遇到的，所以，发不这个圆形控件，我想你以后会用到的，值得收藏。

三.具体调用

package com.example.testdemo;import android.annotation.SuppressLint;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import com.example.testdemo.view.RoundProgressBar;import com.example.testdemo.view.RoundProgressBar2;/** * 主界面 * @author zengtao 2015年6月10日 下午4:02:13 * */public class MainActivity extends Activity {private RoundProgressBar2 r3;private RoundProgressBar r1, r2, r4, r5;private int pro1 = 80; // 想要显示的进度值：如项目中，从服务器返回的数据private int progress = 0;private boolean flag = false;private MyThread thread1;private MyThread2 thread2;private Button start;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();setRoundAttribute(); // 可设置可不设置}/** * 开始方法 */private void start() {// 线程1thread1 = new MyThread();thread1.start();// 线程2thread2 = new MyThread2();thread2.start();}/** * 初始化控件 */private void initView() {r1 = (RoundProgressBar) findViewById(R.id.prpgress1);r2 = (RoundProgressBar) findViewById(R.id.prpgress2);r3 = (RoundProgressBar2) findViewById(R.id.prpgress3);r4 = (RoundProgressBar) findViewById(R.id.prpgress4);r5 = (RoundProgressBar) findViewById(R.id.prpgress5);start = (Button) findViewById(R.id.start);start.setOnClickListener(listener);}/** * 设置圆的属性 */private void setRoundAttribute() {r1.setRoundWidth(10);r1.setTextColor(Color.parseColor("#00ff00"));r1.setCricleColor(Color.parseColor("#ff0000"));r2.setRoundWidth(20);r2.setTextColor(Color.parseColor("#0000ff"));r2.setCricleColor(Color.parseColor("#ff00ff"));r4.setRoundWidth(20);r4.setTextColor(Color.parseColor("#ff00ff"));r4.setCricleColor(Color.parseColor("#ff0000"));r4.setStyle(0);r4.setRoundWidth(20);r4.setTextColor(Color.parseColor("#000000"));r4.setCricleColor(Color.parseColor("#ffff00"));r4.setStyle(1);}/** * 点击事件 */OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View v) {if (v == start) {start();}}};/** * 用于更新ui */@SuppressLint("HandlerLeak")private Handler mHandler = new Handler() {public void handleMessage(android.os.Message msg) {final int x = msg.what;final int temp = (int) msg.obj;if (x == 0 * 1) {if (pro1 - temp > 0) {r1.setProgress(temp);r2.setProgress(temp);r3.setProgress(temp);r4.setProgress(temp);r5.setProgress(temp);} else {r1.setProgress(pro1);r2.setProgress(pro1);r3.setProgress(pro1);r4.setProgress(pro1);r5.setProgress(pro1);thread1.stopThread();}} else if (x == 0 * 2) {if (pro1 - temp > 0) {r1.setProgress(temp);r2.setProgress(temp);r3.setProgress(temp);r4.setProgress(temp);r5.setProgress(temp);} else {r1.setProgress(pro1);r2.setProgress(pro1);r3.setProgress(pro1);r4.setProgress(pro1);r5.setProgress(pro1);thread2.stopThread();}}};};/** * 线程，控制进度动画 * @author zengtao 2015年6月10日 下午4:31:11 * */class MyThread extends Thread {@Overridepublic void run() {while (!flag) {try {progress += 1;Message msg = new Message();msg.what = 0 * 1;msg.obj = progress;Thread.sleep(100);mHandler.sendMessage(msg);} catch (InterruptedException e) {e.printStackTrace();}}}public void stopThread() {flag = true;}}/** * 线程，控制进度动画 * @author zengtao 2015年6月10日 下午4:31:11 * */class MyThread2 extends Thread {@Overridepublic void run() {while (!flag) {try {progress += 2;Message msg = new Message();msg.what = 0 * 2;msg.obj = progress;Thread.sleep(200);mHandler.sendMessage(msg);} catch (InterruptedException e) {e.printStackTrace();}}}public void stopThread() {flag = true;}}@Overrideprotected void onDestroy() {super.onDestroy();if (thread1 != null) {thread1.stopThread();}if (thread2 != null) {thread2.stopThread();}}}

四.总结

实现以上步骤，就实现了一个安全可靠的自定义控件的实现，看起来简简单单，不说分分钟，但是稍微花点时间这就是你的。
源码下载地址：http://download.csdn.net/detail/u011546655/8793521

Android 高手进阶，自定义圆形进度条