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96SEO 2026-02-19 17:01 7
绘制底层圆形#xff1b;在同位置绘制上层弧形#xff0c;但颜色不同#xff…很多场景下都用到这种进度条有的还带动画效果
绘制底层圆形在同位置绘制上层弧形但颜色不同在中心点绘制文本显示进度。
com.test.luodemo.customerview;import
androidx.annotation.Nullable;public
LinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/purple_200com.test.luodemo.customerview.CircleProgressBarandroid:layout_width300dpandroid:layout_height300dp//LinearLayout此时运行是没效果的因为这个View还没有绘制啥也没有。
com.test.luodemo.customerview;import
androidx.annotation.Nullable;public
init(){//初始化文本的画笔paintText.setFlags(Paint.ANTI_ALIAS_FLAG);paintText.setColor(Color.BLACK);paintText.setTextAlign(Paint.Align.CENTER);paintText.setTextSize(80f);//初始化底层圆形的画笔paintCircleBottom.setFlags(Paint.ANTI_ALIAS_FLAG);paintCircleBottom.setColor(Color.LTGRAY);paintCircleBottom.setStrokeWidth(10f);paintCircleBottom.setStrokeCap(Paint.Cap.ROUND);paintCircleBottom.setStyle(Paint.Style.STROKE);//初始化弧形的画笔paintArcTop.setFlags(Paint.ANTI_ALIAS_FLAG);paintArcTop.setColor(Color.MAGENTA);paintArcTop.setStrokeWidth(10f);paintArcTop.setStrokeCap(Paint.Cap.ROUND);paintArcTop.setStyle(Paint.Style.STROKE);}Overrideprotected
{super.onDraw(canvas);//绘制底层圆形canvas.drawCircle(300,
{super.onDraw(canvas);//绘制底层圆形canvas.drawCircle(
paintCircleBottom);//绘制上层弧形,从顶部开始顺时针走90°_angle
90;canvas.drawArc(100,100,500,500,270,
格式化输入保留小数点后两位如果小数点后两位都是0则不显示小数点后两位。
{super.onDraw(canvas);//绘制底层圆形canvas.drawCircle(300,
paintCircleBottom);//绘制上层弧形,从顶部开始顺时针走90°_angle
90;canvas.drawArc(100,100,500,500,270,
paintArcTop);//绘制文本DecimalFormat
DecimalFormat(0.##);canvas.drawText(dt.format(100
//绘制文本,文字中心和圆心保持一致Paint.FontMetrics
paintText.getFontMetrics();float
distance;canvas.drawText(dt.format(100
{super.onDraw(canvas);//绘制底层圆形canvas.drawCircle(300,
paintCircleBottom);//绘制上层弧形,从顶部开始顺时针走90°canvas.drawArc(100,100,500,500,270,
paintArcTop);//绘制文本,文字中心和圆心保持一致DecimalFormat
DecimalFormat(0.##);Paint.FontMetrics
paintText.getFontMetrics();float
distance;canvas.drawText(dt.format(100
ValueAnimator.ofFloat(0,100f);animator.addUpdateListener(new
ValueAnimator.AnimatorUpdateListener()
onAnimationUpdate(ValueAnimator
animation.getAnimatedValue();_angle
View}});animator.setDuration(3000);animator.setInterpolator(new
AccelerateInterpolator());animator.start();}注意要去掉
findViewById(R.id.circle_progress_bar1);
mCircleProgressBar1.setProgress((int)
{super.onMeasure(widthMeasureSpec,
MeasureSpec.getMode(widthMeasureSpec);int
MeasureSpec.getMode(heightMeasureSpec);if
{setMeasuredDimension(DEFAULT_WIDTH,
{setMeasuredDimension(DEFAULT_WIDTH,
{setMeasuredDimension(widthMeasureSpec,
paintCircleBottom.getStrokeWidth();//绘制底层圆形canvas.drawCircle(centerX,
paintCircleBottom);//绘制上层弧形,从顶部开始顺时针走
paintArcTop);//绘制文本,文字中心和圆心保持一致Paint.FontMetrics
paintText.getFontMetrics();float
distance;canvas.drawText(dt.format(100
com.test.luodemo.customerview;import
android.animation.ValueAnimator;
android.view.animation.AccelerateInterpolator;import
androidx.annotation.Nullable;import
init(){//初始化文本的画笔paintText.setFlags(Paint.ANTI_ALIAS_FLAG);paintText.setColor(Color.BLACK);paintText.setTextAlign(Paint.Align.CENTER);paintText.setTextSize(80f);//初始化底层圆形的画笔paintCircleBottom.setFlags(Paint.ANTI_ALIAS_FLAG);paintCircleBottom.setColor(Color.LTGRAY);paintCircleBottom.setStrokeWidth(10f);paintCircleBottom.setStrokeCap(Paint.Cap.ROUND);paintCircleBottom.setStyle(Paint.Style.STROKE);//初始化弧形的画笔paintArcTop.setFlags(Paint.ANTI_ALIAS_FLAG);paintArcTop.setColor(Color.MAGENTA);paintArcTop.setStrokeWidth(10f);paintArcTop.setStrokeCap(Paint.Cap.ROUND);paintArcTop.setStyle(Paint.Style.STROKE);}Overrideprotected
{super.onMeasure(widthMeasureSpec,
MeasureSpec.getMode(widthMeasureSpec);int
MeasureSpec.getMode(heightMeasureSpec);if
{setMeasuredDimension(DEFAULT_WIDTH,
{setMeasuredDimension(DEFAULT_WIDTH,
{setMeasuredDimension(widthMeasureSpec,
DEFAULT_HEIGHT);}}Overrideprotected
paintCircleBottom.getStrokeWidth();//绘制底层圆形canvas.drawCircle(centerX,
paintCircleBottom);//绘制上层弧形,从顶部开始顺时针走90°canvas.drawArc(centerX
paintArcTop);//绘制文本,文字中心和圆心保持一致DecimalFormat
DecimalFormat(0.##);Paint.FontMetrics
paintText.getFontMetrics();float
distance;canvas.drawText(dt.format(100
ValueAnimator.ofFloat(0,100f);animator.addUpdateListener(new
ValueAnimator.AnimatorUpdateListener()
onAnimationUpdate(ValueAnimator
animation.getAnimatedValue();_angle
progress/100;invalidate();}});animator.setDuration(3000);animator.setInterpolator(new
AccelerateInterpolator());animator.start();}
xmlns:androidhttp://schemas.android.com/apk/res/androidxmlns:apphttp://schemas.android.com/apk/res-autoxmlns:toolshttp://schemas.android.com/toolsandroid:layout_widthmatch_parentandroid:layout_heightmatch_parentandroid:orientationverticaltools:context.customerview.CircleProgressBarActivityLinearLayoutandroid:layout_widthmatch_parentandroid:layout_heightwrap_contentandroid:orientationhorizontalLinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/purple_200com.test.luodemo.customerview.CircleProgressBarandroid:idid/circle_progress_bar1android:layout_width300dpandroid:layout_height300dp
//LinearLayoutLinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/teal_200com.test.luodemo.customerview.CircleProgressBarandroid:idid/circle_progress_bar2android:layout_width300dpandroid:layout_height200dp
//LinearLayoutLinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/teal_700com.test.luodemo.customerview.CircleProgressBarandroid:idid/circle_progress_bar3android:layout_width200dpandroid:layout_height300dp
//LinearLayout!--LinearLayoutandroid:layout_width50dpandroid:layout_height70dpandroid:backgroundcolor/purple_200com.test.luodemo.customerview.CircleProgressBarandroid:layout_widthmatch_parentandroid:layout_heightmatch_parent//LinearLayoutLinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/purple_200com.test.luodemo.customerview.CircleProgressBarandroid:layout_widthwrap_contentandroid:layout_heightwrap_content//LinearLayout--/LinearLayoutLinearLayoutandroid:layout_widthmatch_parentandroid:layout_heightwrap_contentandroid:visibilityvisibleButtonandroid:idid/button_cpb1android:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:onClickonCPBButtonClickandroid:textButton1
/Buttonandroid:idid/button_cpb2android:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:onClickonCPBButtonClickandroid:textButton2
/Buttonandroid:idid/button_cpb3android:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:onClickonCPBButtonClickandroid:textButton3
/Buttonandroid:idid/button_cpb_allandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:onClickonCPBButtonClickandroid:textButton
//LinearLayout/LinearLayoutActivity
mCircleProgressBar3;Overrideprotected
{super.onCreate(savedInstanceState);setContentView(R.layout.activity_circle_progress_bar);Objects.requireNonNull(getSupportActionBar()).setTitle(CircleProgressBarActivity);mCircleProgressBar1
findViewById(R.id.circle_progress_bar1);mCircleProgressBar2
findViewById(R.id.circle_progress_bar2);mCircleProgressBar3
findViewById(R.id.circle_progress_bar3);}public
R.id.button_cpb1:mCircleProgressBar1.setProgress((int)
R.id.button_cpb2:mCircleProgressBar2.setProgress((int)
R.id.button_cpb3:mCircleProgressBar3.setProgress((int)
R.id.button_cpb_all:mCircleProgressBar1.setProgress((int)
Math.random()));mCircleProgressBar2.setProgress((int)
Math.random()));mCircleProgressBar3.setProgress((int)
Math.random()));break;default:break;}}
需求是不停的会有这些需求可指定画笔宽度、颜色等、可指定动画时长等。
app:cus_view_gravity“top|right”fraction百分比如
context.obtainStyledAttributes(attrs,
R.styleable.CircleProgressBar);textColor
typedArray.getColor(R.styleable.CircleProgressBar_textColor,
typedArray.getFloat(R.styleable.CircleProgressBar_textSize,
typedArray.getColor(R.styleable.CircleProgressBar_circleColor,
typedArray.getFloat(R.styleable.CircleProgressBar_circleWidth,
typedArray.getColor(R.styleable.CircleProgressBar_arcColor,
typedArray.getFloat(R.styleable.CircleProgressBar_arcWidth,
typedArray.getInt(R.styleable.CircleProgressBar_initProgress,
0);typedArray.recycle();init();}有两个带
xmlns:androidhttp://schemas.android.com/apk/res/androidxmlns:apphttp://schemas.android.com/apk/res-auto
xmlns:toolshttp://schemas.android.com/toolsandroid:layout_widthmatch_parentandroid:layout_heightmatch_parentandroid:orientationverticaltools:context.customerview.CircleProgressBarActivity!--
LinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/purple_200com.test.luodemo.customerview.CircleProgressBarandroid:idid/circle_progress_bar1android:layout_width300dpandroid:layout_height300dp!--
app:circleColorandroid:color/whiteapp:circleWidth30app:arcColorcolor/my_redapp:arcWidth15app:textColorandroid:color/holo_orange_darkapp:initProgress30!--
差异有底层圆形的颜色、画笔大小上层弧形的颜色、画笔大小、开始的角度中间文字的颜色。
com.test.luodemo.customerview;import
android.animation.ValueAnimator;
android.content.res.TypedArray;
android.view.animation.AccelerateInterpolator;import
androidx.annotation.Nullable;import
_angle;//弧形的角度/*****************************
*******************************/int
progress;/*****************************
*******************************/public
context.obtainStyledAttributes(attrs,
R.styleable.CircleProgressBar);textColor
typedArray.getColor(R.styleable.CircleProgressBar_textColor,
typedArray.getFloat(R.styleable.CircleProgressBar_textSize,
typedArray.getColor(R.styleable.CircleProgressBar_circleColor,
typedArray.getFloat(R.styleable.CircleProgressBar_circleWidth,
typedArray.getColor(R.styleable.CircleProgressBar_arcColor,
typedArray.getFloat(R.styleable.CircleProgressBar_arcWidth,
typedArray.getInt(R.styleable.CircleProgressBar_initProgress,
0);typedArray.recycle();init();}public
init(){//初始化文本的画笔paintText.setFlags(Paint.ANTI_ALIAS_FLAG);paintText.setStyle(Paint.Style.FILL);paintText.setColor(textColor);//设置自定义属性值paintText.setTextAlign(Paint.Align.CENTER);paintText.setTextSize(textSize);//初始化底层圆形的画笔paintCircleBottom.setFlags(Paint.ANTI_ALIAS_FLAG);paintCircleBottom.setStrokeCap(Paint.Cap.ROUND);paintCircleBottom.setStyle(Paint.Style.STROKE);paintCircleBottom.setColor(circleColor);//设置自定义属性值paintCircleBottom.setStrokeWidth(circleWidth);//设置自定义属性值//初始化弧形的画笔paintArcTop.setFlags(Paint.ANTI_ALIAS_FLAG);paintArcTop.setStrokeCap(Paint.Cap.ROUND);paintArcTop.setStyle(Paint.Style.STROKE);paintArcTop.setColor(arcColor);//设置自定义属性值paintArcTop.setStrokeWidth(arcWidth);//设置自定义属性值_angle
{super.onMeasure(widthMeasureSpec,
MeasureSpec.getMode(widthMeasureSpec);int
MeasureSpec.getMode(heightMeasureSpec);if
{setMeasuredDimension(DEFAULT_WIDTH,
{setMeasuredDimension(DEFAULT_WIDTH,
{setMeasuredDimension(widthMeasureSpec,
DEFAULT_HEIGHT);}}Overrideprotected
paintCircleBottom.getStrokeWidth();//绘制底层圆形canvas.drawCircle(centerX,
paintCircleBottom);//绘制上层弧形,从顶部开始顺时针走90°canvas.drawArc(centerX
paintArcTop);//绘制文本,文字中心和圆心保持一致DecimalFormat
DecimalFormat(0.##);Paint.FontMetrics
paintText.getFontMetrics();float
distance;canvas.drawText(dt.format(100
ValueAnimator.ofFloat(0,100f);animator.addUpdateListener(new
ValueAnimator.AnimatorUpdateListener()
onAnimationUpdate(ValueAnimator
animation.getAnimatedValue();_angle
progress/100;invalidate();}});animator.setDuration(3000);animator.setInterpolator(new
AccelerateInterpolator());animator.start();}
xmlns:androidhttp://schemas.android.com/apk/res/androidxmlns:apphttp://schemas.android.com/apk/res-autoxmlns:toolshttp://schemas.android.com/toolsandroid:layout_widthmatch_parentandroid:layout_heightmatch_parentandroid:orientationverticaltools:context.customerview.CircleProgressBarActivityLinearLayoutandroid:layout_widthmatch_parentandroid:layout_heightwrap_contentandroid:orientationhorizontalLinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/purple_200com.test.luodemo.customerview.CircleProgressBarandroid:idid/circle_progress_bar1android:layout_width300dpandroid:layout_height300dpapp:circleColorandroid:color/whiteapp:circleWidth30app:arcColorcolor/my_redapp:arcWidth15app:textColorandroid:color/holo_orange_darkapp:initProgress30//LinearLayoutLinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/teal_200com.test.luodemo.customerview.CircleProgressBarandroid:idid/circle_progress_bar2android:layout_width300dpandroid:layout_height200dp
//LinearLayoutLinearLayoutandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:backgroundcolor/teal_700com.test.luodemo.customerview.CircleProgressBarandroid:idid/circle_progress_bar3android:layout_width200dpandroid:layout_height300dp
//LinearLayout/LinearLayoutLinearLayoutandroid:layout_widthmatch_parentandroid:layout_heightwrap_contentandroid:visibilityvisibleButtonandroid:idid/button_cpb1android:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:onClickonCPBButtonClickandroid:textButton1
/Buttonandroid:idid/button_cpb2android:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:onClickonCPBButtonClickandroid:textButton2
/Buttonandroid:idid/button_cpb3android:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:onClickonCPBButtonClickandroid:textButton3
/Buttonandroid:idid/button_cpb_allandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:onClickonCPBButtonClickandroid:textButton
//LinearLayout/LinearLayoutActivity
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