自定义视图view之环形进度条
目录
- 一、普通效果。
- 二、单环在圈外画弧度
- 三、双环效果
- 四、XML布局
- 五、MainActivity中代码的引用
- 六、自定义属性
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”
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; /** * 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 xiaanming * */ 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 www.devze.commTypedArray = context.obtainStyledAttributes(attrs,R.styleable.RoundProgressBar); //获取自定义属开发者_C教程性和默认值 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(); } /** * 设置进度,并判断进度状态 * 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(); } } @Override protected 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 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 + ""); /** * 画进度百分比 */ 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 } /** * 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);//----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) { /* * public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, Paint paint) oval :指定圆弧的外轮廓矩形区域。 startAngle: 圆弧起始角度,单位为度。 sweepAngle: 圆弧扫过的角度,顺时针方向,单位为度。 useCenter: 如果为True时,在绘制圆弧时将圆心包括在内,通常用来绘制扇形。 paint: 绘制圆弧的画板属性,如颜色,是否填充等。 * * */ 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 /*最外围黄色圆弧*/ // 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) /*最外围红色圆弧*/ canvas.drawArc(oval, 0, 360 * progress / max, true, paint); //根据进度画圆弧 /*最外围黄色圆弧*/ // 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
和普通效果代码不同的地方如下,屏蔽167行,打开168行即可:
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; /** * 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 xiaanming * */ 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; js /** * 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 textIsDisplawww.devze.comyable; /** * 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.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(); } /** * 设置进度,并判断进度状态 * 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(); } } @Override protected 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 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 + ""); /** * 画进度百分比 */ paint.setStrokeWidth(0); paint.setColor(textColor); paint.setTextSize(textSize); paint.setTypeface(Typeface.DEFAULT_BOLD); //设置字体 int percent = (编程客栈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 } /** * 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);//----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) { /* * public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, Paint paint) oval :指定圆弧的外轮廓矩形区域。 startAngle: 圆弧起始角度,单位为度。 sweepAngle: 圆弧扫过的角度,顺时针方向,单位为度。 useCenter: 如果为True时,在绘制圆弧时将圆心包括在内,通常用来绘制扇形。 paint: 绘制圆弧的画板属性,如颜色,是否填充等。 * * */ 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 /*最外围黄色圆弧*/ // 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) /*最外围红色圆弧*/ canvas.drawArc(oval, 0, 360 * progress / max, true, paint); //根据进度画圆弧 /*最外围黄色圆弧*/ // paint.setStrokeWidth(9); // paint.setColor(Color.YELLOW); // canvas.drawArc(ova12, 0, 360 * progress / max, false, paint); // break; } } } }
三、双环效果
代码不同的地方
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; /** * 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 xiaanming * */ 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.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(); } /** * 设置进度,并判断进度状态 * 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(); } } @Override protected 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 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 + ""); /** * 画进度百分比 */ 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 != 0android && style == STROKE){ canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, 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);//----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) { /* * public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, Paint paint) oval :指定圆弧的外轮廓矩形区域。 startAngle: 圆弧起始角度,单位为度。 sweepAngle: 圆弧扫过的角度,顺时针方向,单位为度。 useCenter: 如果为True时,在绘制圆弧时将圆心包括在内,通常用来绘制扇形。 paint: 绘制圆弧的画板属性,如颜色,是否填充等。 * * */ 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 /*最外围黄色圆弧*/ 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) /*最外围红色圆弧*/ canvas.drawArc(oval, 0, 360 * progress / max, true, paint); //根据进度画圆弧 /*最外围黄色圆弧*/ 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
这里需要添加或修改的代码如下:
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; /** * 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 xiaanming * */ 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.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(); } /** * 设置进度,并判断进度状态 * 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(); } } @Override protected 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 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 + ""); /** * 画进度百分比 */ 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 } /** * 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);//----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) { /* * public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, Paint paint) oval :指定圆弧的外轮廓矩形区域。 startAngle: 圆弧起始角度,单位为度。 sweepAngle: 圆弧扫过的角度,顺时针方向,单位为度。 useCenter: 如果为True时,在绘制圆弧时将圆心包括在内,通常用来绘制扇形。 paint: 绘制圆弧的画板属性,如颜色,是否填充等。 * * */ 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 /*最外围黄色圆弧*/ 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) /*最外围红色圆弧*/ canvas.drawArc(oval, 0, 360 * progress / max, true, paint); //根据进度画圆弧 /*最外围黄色圆弧*/ 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>
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>
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