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自定义视图view之环形进度条

2023-05-14 11:11

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 一、普通效果。

本章博客有4种不同的效果，小伙伴可以绘制更多的效果，唯一不同的代码，是自定义view时，怎么绘制弧度。Main类和布局无更改”

这里写图片描述



package tester.ermu.com.pingamedemo;

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.util.Log;
import android.view.View;



public class RoundProgressBar extends View {
    
    private Paint paint;

    
    private int roundColor;

    
    private int roundProgressColor;

    
    private int textColor;

    
    private float textSize;

    
    private float roundWidth;

    
    private int max;

    
    private int progress;
    
    private boolean textIsDisplayable;

    
    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.RED);//圆环的颜色
        roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN);//圆环进度的颜色
        textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.GREEN);//字体颜色
        textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15);//字体大小
        roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 5);//圆环的宽度
        max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100);//进度条最大值，一般都为1001
        textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);//是否显示中间的进度
        style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 1);//进度的风格，实心或者空心

        mTypedArray.recycle();
    }

    
    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();
        }

    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        
        int centre = getWidth()/2; //获取圆心的x坐标
        Log.i("Text","centre ------1111"+centre);
        int radius = (int) (centre - roundWidth*2); //圆环的半径


        Log.i("Text","radius ------2222"+radius);
        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

        Log.e("log", centre + "");

        
        paint.setStrokeWidth(0);
        paint.setColor(textColor);
        paint.setTextSize(textSize);
        paint.setTypeface(Typeface.DEFAULT_BOLD); //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0
        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 && percent != 0 && style == STROKE){
            canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, paint); //画出进度百分比
        }

        

        //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);//----1号：代码用于定义的圆弧的形状和大小的界限
//      RectF oval = new RectF(centre - radius-40, centre - radius-40, centre+ radius+40, centre + radius+40);  //--2号：用于定义的圆弧的形状和大小的界限
//      RectF ova12 = new RectF(centre - radius-60, centre - radius-60, centre+ radius+60, centre + radius+60);

//      RectF oval = new RectF(centre - radius+40, centre - radius+40, centre+ radius-40, centre + radius-40);  //--2号：用于定义的圆弧的形状和大小的界限
//      RectF ova12 = new RectF(centre - radius+60, centre - radius+60, centre+ radius-60, centre + radius-60);

        switch (style) {

            
            case STROKE:{
                paint.setStyle(Paint.Style.STROKE);
                paint.setStrokeWidth(18);
                paint.setColor(Color.RED);
                canvas.drawArc(oval, 0, 360 * progress / max, false, paint);  //根据进度画圆弧

                
//              paint.setStrokeWidth(9);
//              paint.setColor(Color.YELLOW);
//              canvas.drawArc(ova12, 0, 360 * progress / max, false, paint);  //根据进度画圆弧
                break;
            }
            case FILL:{
                paint.setStyle(Paint.Style.FILL_AND_STROKE);
                paint.setStrokeWidth(18);
                paint.setColor(Color.RED);

                if(progress !=0)
                    
                    canvas.drawArc(oval, 0, 360 * progress / max, true, paint);  //根据进度画圆弧


                
//              paint.setStrokeWidth(9);
//              paint.setColor(Color.YELLOW);
//              canvas.drawArc(ova12, 0, 360 * progress / max, false, paint);  //
                break;
            }
        }

    }




}

二、单环在圈外画弧度

这里写图片描述

和普通效果代码不同的地方如下，屏蔽167行，打开168行即可：

这里写图片描述

这里写图片描述


package tester.ermu.com.pingamedemo;

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.util.Log;
import android.view.View;



public class RoundProgressBar extends View {
    
    private Paint paint;

    
    private int roundColor;

    
    private int roundProgressColor;

    
    private int textColor;

    
    private float textSize;

    
    private float roundWidth;

    
    private int max;

    
    private int progress;
    
    private boolean textIsDisplayable;

    
    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.RED);//圆环的颜色
        roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN);//圆环进度的颜色
        textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.GREEN);//字体颜色
        textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15);//字体大小
        roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 5);//圆环的宽度
        max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100);//进度条最大值，一般都为1001
        textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);//是否显示中间的进度
        style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 1);//进度的风格，实心或者空心

        mTypedArray.recycle();
    }

    
    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();
        }

    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        
        int centre = getWidth()/2; //获取圆心的x坐标
        Log.i("Text","centre ------1111"+centre);
        int radius = (int) (centre - roundWidth*2); //圆环的半径


        Log.i("Text","radius ------2222"+radius);
        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

        Log.e("log", centre + "");

        
        paint.setStrokeWidth(0);
        paint.setColor(textColor);
        paint.setTextSize(textSize);
        paint.setTypeface(Typeface.DEFAULT_BOLD); //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0
        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 && percent != 0 && style == STROKE){
            canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, paint); //画出进度百分比
        }

        

        //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);//----1号：代码用于定义的圆弧的形状和大小的界限
        RectF oval = new RectF(centre - radius-40, centre - radius-40, centre+ radius+40, centre + radius+40);  //--2号：用于定义的圆弧的形状和大小的界限
//      RectF ova12 = new RectF(centre - radius-60, centre - radius-60, centre+ radius+60, centre + radius+60);

//      RectF oval = new RectF(centre - radius+40, centre - radius+40, centre+ radius-40, centre + radius-40);  //--2号：用于定义的圆弧的形状和大小的界限
//      RectF ova12 = new RectF(centre - radius+60, centre - radius+60, centre+ radius-60, centre + radius-60);

        switch (style) {

            
            case STROKE:{
                paint.setStyle(Paint.Style.STROKE);
                paint.setStrokeWidth(18);
                paint.setColor(Color.RED);
                canvas.drawArc(oval, 0, 360 * progress / max, false, paint);  //根据进度画圆弧

                
//              paint.setStrokeWidth(9);
//              paint.setColor(Color.YELLOW);
//              canvas.drawArc(ova12, 0, 360 * progress / max, false, paint);  //根据进度画圆弧
                break;
            }
            case FILL:{
                paint.setStyle(Paint.Style.FILL_AND_STROKE);
                paint.setStrokeWidth(18);
                paint.setColor(Color.RED);

                if(progress !=0)
                    
                    canvas.drawArc(oval, 0, 360 * progress / max, true, paint);  //根据进度画圆弧


                
//              paint.setStrokeWidth(9);
//              paint.setColor(Color.YELLOW);
//              canvas.drawArc(ova12, 0, 360 * progress / max, false, paint);  //
                break;
            }
        }

    }
}

三、双环效果

这里写图片描述

代码不同的地方

这里写图片描述

这里写图片描述


package tester.ermu.com.pingamedemo;

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.util.Log;
import android.view.View;



public class RoundProgressBar extends View {
    
    private Paint paint;

    
    private int roundColor;

    
    private int roundProgressColor;

    
    private int textColor;

    
    private float textSize;

    
    private float roundWidth;

    
    private int max;

    
    private int progress;
    
    private boolean textIsDisplayable;

    
    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.RED);//圆环的颜色
        roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN);//圆环进度的颜色
        textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.GREEN);//字体颜色
        textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15);//字体大小
        roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 5);//圆环的宽度
        max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100);//进度条最大值，一般都为1001
        textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);//是否显示中间的进度
        style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 1);//进度的风格，实心或者空心

        mTypedArray.recycle();
    }

    
    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();
        }

    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        
        int centre = getWidth()/2; //获取圆心的x坐标
        Log.i("Text","centre ------1111"+centre);
        int radius = (int) (centre - roundWidth*2); //圆环的半径


        Log.i("Text","radius ------2222"+radius);
        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

        Log.e("log", centre + "");

        
        paint.setStrokeWidth(0);
        paint.setColor(textColor);
        paint.setTextSize(textSize);
        paint.setTypeface(Typeface.DEFAULT_BOLD); //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0
        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 && percent != 0 && style == STROKE){
            canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, paint); //画出进度百分比
        }

        

        //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);//----1号：代码用于定义的圆弧的形状和大小的界限
        RectF oval = new RectF(centre - radius-40, centre - radius-40, centre+ radius+40, centre + radius+40);  //--2号：用于定义的圆弧的形状和大小的界限
        RectF ova12 = new RectF(centre - radius-60, centre - radius-60, centre+ radius+60, centre + radius+60);

//      RectF oval = new RectF(centre - radius+40, centre - radius+40, centre+ radius-40, centre + radius-40);  //--2号：用于定义的圆弧的形状和大小的界限
//      RectF ova12 = new RectF(centre - radius+60, centre - radius+60, centre+ radius-60, centre + radius-60);

        switch (style) {

            
            case STROKE:{
                paint.setStyle(Paint.Style.STROKE);
                paint.setStrokeWidth(18);
                paint.setColor(Color.RED);
                canvas.drawArc(oval, 0, 360 * progress / max, false, paint);  //根据进度画圆弧

                
                paint.setStrokeWidth(9);
                paint.setColor(Color.YELLOW);
                canvas.drawArc(ova12, 0, 360 * progress / max, false, paint);  //根据进度画圆弧
                break;
            }
            case FILL:{
                paint.setStyle(Paint.Style.FILL_AND_STROKE);
                paint.setStrokeWidth(18);
                paint.setColor(Color.RED);

                if(progress !=0)
                    
                    canvas.drawArc(oval, 0, 360 * progress / max, true, paint);  //根据进度画圆弧


                
                paint.setStrokeWidth(9);
                paint.setColor(Color.YELLOW);
                canvas.drawArc(ova12, 0, 360 * progress / max, false, paint);  //
                break;
            }
        }

    }




}

实心效果环形进度条

这里写图片描述

这里需要添加或修改的代码如下：

这里写图片描述


package tester.ermu.com.pingamedemo;

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.util.Log;
import android.view.View;



public class RoundProgressBar extends View {
    
    private Paint paint;

    
    private int roundColor;

    
    private int roundProgressColor;

    
    private int textColor;

    
    private float textSize;

    
    private float roundWidth;

    
    private int max;

    
    private int progress;
    
    private boolean textIsDisplayable;

    
    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.RED);//圆环的颜色
        roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN);//圆环进度的颜色
        textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.GREEN);//字体颜色
        textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15);//字体大小
        roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 5);//圆环的宽度
        max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100);//进度条最大值，一般都为1001
        textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);//是否显示中间的进度
        style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 1);//进度的风格，实心或者空心

        mTypedArray.recycle();
    }

    
    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();
        }

    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        
        int centre = getWidth()/2; //获取圆心的x坐标
        Log.i("Text","centre ------1111"+centre);
        int radius = (int) (centre - roundWidth*2); //圆环的半径


        Log.i("Text","radius ------2222"+radius);
        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

        Log.e("log", centre + "");

        
        paint.setStrokeWidth(0);
        paint.setColor(textColor);
        paint.setTextSize(textSize);
        paint.setTypeface(Typeface.DEFAULT_BOLD); //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0
        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 && percent != 0 && style == STROKE){
            canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, paint); //画出进度百分比
        }

        

        //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);//----1号：代码用于定义的圆弧的形状和大小的界限
//      RectF oval = new RectF(centre - radius-40, centre - radius-40, centre+ radius+40, centre + radius+40);  //--2号：用于定义的圆弧的形状和大小的界限
//      RectF ova12 = new RectF(centre - radius-60, centre - radius-60, centre+ radius+60, centre + radius+60);

        RectF oval = new RectF(centre - radius+40, centre - radius+40, centre+ radius-40, centre + radius-40);  //--2号：用于定义的圆弧的形状和大小的界限
        RectF ova12 = new RectF(centre - radius+60, centre - radius+60, centre+ radius-60, centre + radius-60);

        switch (style) {

            
            case STROKE:{
                paint.setStyle(Paint.Style.STROKE);
                paint.setStrokeWidth(18);
                paint.setColor(Color.RED);
                canvas.drawArc(oval, 0, 360 * progress / max, false, paint);  //根据进度画圆弧

                
                paint.setStrokeWidth(9);
                paint.setColor(Color.YELLOW);
                canvas.drawArc(ova12, 0, 360 * progress / max, false, paint);  //根据进度画圆弧
                break;
            }
            case FILL:{
                paint.setStyle(Paint.Style.FILL_AND_STROKE);
                paint.setStrokeWidth(18);
                paint.setColor(Color.RED);

                if(progress !=0)
                    
                    canvas.drawArc(oval, 0, 360 * progress / max, true, paint);  //根据进度画圆弧


                
                paint.setStrokeWidth(9);
                paint.setColor(Color.YELLOW);
                canvas.drawArc(ova12, 0, 360 * progress / max, false, paint);  //
                break;
            }
        }

    }




}

四、Xml布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:android_custom="http://schemas.android.com/apk/res/tester.ermu.com.pingamedemo"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#000000"
    tools:ignore="ResAuto">

    <tester.ermu.com.pingamedemo.RoundProgressBar
        android:id="@+id/roundBar"
        android:layout_width="200dip"
        android:layout_height="200dip"
        android:layout_gravity="center"
        android:layout_marginTop="30dp"
        android:layout_marginBottom="79dp"

        android_custom:roundColor="#ffffff"
        android_custom:roundProgressColor="@android:color/black"
        android_custom:textColor="#9A32CD"
        android_custom:roundWidth="15dip"
        android_custom:textSize="18sp" />

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:background="#ffffff"
        android:layout_margin="5dp"
        android:text="开始" />


</LinearLayout>

这里写图片描述

五、MainActivity中代码的引用

package tester.ermu.com.pingamedemo;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;


public class MainActivity extends Activity implements OnClickListener{
    private RoundProgressBar  roundBar ;
    private int progress = 0;
    private Button button1,button2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_cricle_progress);
        init();

    }

    private void init() {
        roundBar = (RoundProgressBar) findViewById(R.id.roundBar);

        button1 = (Button)findViewById(R.id.button1);
        button1.setOnClickListener(this);

    }


    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case    R.id.button1:
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        while(progress <= 100){
                            progress += 3;
                            System.out.println(progress);
                            roundBar.setProgress(progress);
                            try {
                                Thread.sleep(100);
                            } catch (InterruptedException e) {
                                e.printStackTrace();
                            }
                        }
                    }
                }).start();
                break;


        }
    }
}

六、自定义属性

<?xml version="1.0" encoding="UTF-8"?>
<resources>
    <declare-styleable name="RoundProgressBar">  
        <attr name="roundColor" format="color"/>
        <attr name="roundProgressColor" format="color"/>
        <attr name="roundWidth" format="dimension"></attr>
        <attr name="textColor" format="color" />  
        <attr name="textSize" format="dimension" /> 
        <attr name="max" format="integer"></attr> 
        <attr name="textIsDisplayable" format="boolean"></attr>
        <attr name="style">
            <enum name="STROKE" value="0"></enum>
            <enum name="FILL" value="1"></enum>
        </attr>
    </declare-styleable> 
</resources>

这里写图片描述

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