Android自定義圓弧進(jìn)度條加數(shù)字動(dòng)態(tài)變化
本文實(shí)例為大家分享了Android自定義圓弧進(jìn)度條數(shù)字變化的具體代碼,供大家參考,具體內(nèi)容如下
效果如下:
思路:一個(gè)內(nèi)環(huán)圓弧和一個(gè)外環(huán)圓弧,因?yàn)橛幸粋€(gè)圓圈是在圓弧上做圓周運(yùn)動(dòng),所以在畫圓的時(shí)候必須要得到圓弧上的各個(gè)點(diǎn)的坐標(biāo),這里其實(shí)就用到了PathMeasure這個(gè)類,可以幫我們拿到這些點(diǎn),在畫圓弧的時(shí)候也理所應(yīng)當(dāng)?shù)囊褂胮ath,然后根據(jù)外界動(dòng)態(tài)的傳值進(jìn)行重繪就能達(dá)到動(dòng)態(tài)的效果
代碼如下:
public class ProgressPathRainbow extends View { private Paint outPaint; private Paint innerPaint; private Paint mTextPaint; private Paint mRmbTextPaint; private int mBorderWidth = 40; private int mCircleRadius = 40; private int mCurrentProgress = 0; private int mMaxProgress = 0; private int startAngle = 180; private int sweepAngels = 180; private Paint mCirclePaint; private String rmb = "¥"; private String currentText = "0.0"; public void setCurrentText(String currentText) { this.currentText = currentText; } //儲(chǔ)存位置點(diǎn) private float[] pos =new float[2]; public ProgressPathRainbow(Context context) { super(context); initPaint(); } public ProgressPathRainbow(Context context, @Nullable AttributeSet attrs) { super(context, attrs); initPaint(); } public ProgressPathRainbow(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); initPaint(); } private void initPaint(){ outPaint = new Paint(); outPaint.setColor(0xFFECECEC); outPaint.setAntiAlias(true); outPaint.setStyle(Paint.Style.STROKE); outPaint.setStrokeCap(Paint.Cap.ROUND); outPaint.setStrokeWidth(mBorderWidth); // innerPaint = new Paint(); innerPaint.setColor(0xffFBA123); innerPaint.setAntiAlias(true); innerPaint.setStyle(Paint.Style.STROKE); innerPaint.setStrokeCap(Paint.Cap.ROUND); innerPaint.setStrokeWidth(mBorderWidth); mCirclePaint = new Paint(); mCirclePaint.setColor(Color.WHITE); mCirclePaint.setStyle(Paint.Style.FILL); mTextPaint = new Paint(); mTextPaint.setAntiAlias(true); mTextPaint.setColor(0xffE5423D); mTextPaint.setFakeBoldText(true); mTextPaint.setTextSize(SizeUtils.sp2px(42)); mRmbTextPaint = new Paint(); mRmbTextPaint.setAntiAlias(true); mRmbTextPaint.setColor(0xffE5423D); mRmbTextPaint.setTextSize(SizeUtils.sp2px(18)); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); int width = MeasureSpec.getSize(widthMeasureSpec); int height = MeasureSpec.getSize(heightMeasureSpec); if (width >= height){ setMeasuredDimension(height,height); }else { setMeasuredDimension(width,width); } } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); RectF rectF = new RectF(mBorderWidth,mBorderWidth,getWidth()-mBorderWidth,getHeight()-mBorderWidth); //畫內(nèi)環(huán)圓弧 Path outerPath = new Path(); outerPath.arcTo(rectF,startAngle,sweepAngels); canvas.drawPath(outerPath,outPaint); //畫外環(huán)圓弧 Path innerPah = new Path(); float percent = (float)mCurrentProgress/mMaxProgress; innerPah.arcTo(rectF,startAngle,percent*sweepAngels); canvas.drawPath(innerPah,innerPaint); //畫金額 String tempText = new BigDecimal(currentText).multiply(new BigDecimal(percent)).setScale(1, RoundingMode.HALF_UP).toString(); Rect textBounds = new Rect(); mTextPaint.getTextBounds(tempText, 0, tempText.length(), textBounds); int dx = getWidth()/2 - textBounds.width()/2; // 基線 baseLine Paint.FontMetricsInt fontMetrics = mTextPaint.getFontMetricsInt(); int dy = (fontMetrics.bottom - fontMetrics.top)/2 - fontMetrics.bottom; int baseLine = getHeight()/3 + dy; canvas.drawText(tempText,dx,baseLine,mTextPaint); //畫人民幣符號(hào) Rect textBoundRmbs = new Rect(); mTextPaint.getTextBounds(rmb, 0, rmb.length(), textBoundRmbs); int dxRmb = dx-50; // 基線 baseLine Paint.FontMetricsInt fontMetricsRmb = mTextPaint.getFontMetricsInt(); int dyRmb = (fontMetricsRmb.bottom - fontMetricsRmb.top)/2 - fontMetricsRmb.bottom; int baseLineRmb = getHeight()/3 + dyRmb; canvas.drawText(rmb,dxRmb,baseLineRmb,mRmbTextPaint); //獲取圓弧上點(diǎn)的位置(坐標(biāo),畫一個(gè)圓) PathMeasure pathMeasure = new PathMeasure(outerPath,false); boolean posTan = pathMeasure.getPosTan(pathMeasure.getLength() * percent, pos, null); canvas.drawCircle(pos[0],pos[1],mCircleRadius,mCirclePaint); } public synchronized void setmCurrentProgress(int mCurrentProgress) { this.mCurrentProgress = mCurrentProgress; invalidate(); } public synchronized void setmMaxProgress(int mMaxProgress) { this.mMaxProgress = mMaxProgress; } }
以上就可以實(shí)現(xiàn)這個(gè)效果
使用的話可以這樣
detailRainbowPr.setmMaxProgress(100); detailRainbowPr.setCurrentText("99.9"); ValueAnimator valueAnimator = ObjectAnimator.ofFloat(0, 100); valueAnimator.setDuration(5000); valueAnimator.setInterpolator(new DecelerateInterpolator()); valueAnimator.addUpdateListener(valueAnimator1 -> { float step = (float) valueAnimator1.getAnimatedValue(); detailRainbowPr.setmCurrentProgress((int) step); }); valueAnimator.start();
以上就是本文的全部?jī)?nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持腳本之家。
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