Android Implementation of Circular Progress for Step Counting

In this project, a circular progress bar for step counting needs to be implemented. When the target is not reached, draw a specific arc (the completed steps/target steps)*360°) arc. When the completed steps are greater than or equal to the target steps, draw the entire360° circle.

Effect diagram:

Code implementation:

Set the completed steps and target steps:

  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);
    }
  }

Set the progress:

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

Set the pen properties:

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

Draw the circular and background:

canvas.drawArc(mRectF, -9, 360, false, mPaint);
mPaint.setColor(Color.rgb(0xf8, 0x60, 0x30));
canvas.drawArc(mRectF, -90, ((float) mProgress / mMaxProgress) * 360, false, mPaint);

Draw the step count and unit:

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);

Draw the target step count:

 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);

That's all for this article. I hope it will be helpful to everyone's study and that everyone will support the Yelling Tutorial more.

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