Android項(xiàng)目中使用Progress實(shí)現(xiàn)一個(gè)環(huán)形進(jìn)度條

發(fā)布時(shí)間：2020-11-23 17:26:26 來(lái)源：億速云閱讀：192 作者：Leah 欄目：移動(dòng)開(kāi)發(fā)

這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)?lái)有關(guān)Android項(xiàng)目中使用Progress實(shí)現(xiàn)一個(gè)環(huán)形進(jìn)度條，文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述，閱讀完這篇文章希望大家可以有所收獲。

效果圖：

代碼實(shí)現(xiàn)：

設(shè)置已完成步數(shù)和目標(biāo)步數(shù)：

  public void setStep(int stepDone, int stepGoal) {
    this.stepDone = stepDone;
    this.stepGoal = stepGoal;
    int progess = (stepDone * 100) / stepGoal;
    if (progess > 100) {
      setProgress(100);
    } else {
      setProgress(progess);
    }
  }

設(shè)置進(jìn)度：

  public void setProgress(int progress) {
    this.mProgress = progress;
    this.invalidate();
  }

設(shè)置畫(huà)筆屬性：

mPaint.setAntiAlias(true);
mPaint.setColor(Color.rgb(0xe9, 0xe9, 0xe9));
canvas.drawColor(Color.TRANSPARENT);
mPaint.setStrokeWidth(LINE_WIDTH_BG);
mPaint.setStyle(Paint.Style.STROKE);

繪制環(huán)形和背景：

canvas.drawArc(mRectF, -90, 360, false, mPaint);
mPaint.setColor(Color.rgb(0xf8, 0x60, 0x30));
canvas.drawArc(mRectF, -90, ((float) mProgress / mMaxProgress) * 360, false, mPaint);

繪制步數(shù)和單位：

mPaint.setStrokeWidth(TEXT_WIDTH);
    String text = stepDone + context.getString(R.string.step_unit);
    int textHeight = height / 4;
    mPaint.setTextSize(textHeight);
    int textWidth = (int) mPaint.measureText(text, 0, text.length());
    mPaint.setStyle(Paint.Style.FILL);
    canvas.drawText(text, width / 2 - textWidth / 2, height / 2 + textHeight / 4, mPaint);

繪制目標(biāo)步數(shù)：

 String textGoal = "/" + stepGoal;
    int textGoalHeight = height / 8;
    mPaint.setTextSize(textGoalHeight);
    int textGoalWidth = (int) mPaint.measureText(textGoal, 0, textGoal.length());
    mPaint.setStyle(Paint.Style.FILL);
    canvas.drawText(textGoal, width / 2 - textGoalWidth / 2, height / 2 + textHeight / 2
        + textGoalHeight, mPaint);

上述就是小編為大家分享的Android項(xiàng)目中使用Progress實(shí)現(xiàn)一個(gè)環(huán)形進(jìn)度條了，如果剛好有類似的疑惑，不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí)，歡迎關(guān)注億速云行業(yè)資訊頻道。

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Android項(xiàng)目中使用Progress實(shí)現(xiàn)一個(gè)環(huán)形進(jìn)度條

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