Android实现计步进度的环形Progress

项目中需要实现一个计步进度的环形progress，当未达到设定目标时，绘制特定弧度（(已实现步数/目标步数)*360°）的圆弧。当已实现步数大于等于目标步数时绘制整个360°圆环。

效果图：

代码实现：

设置已完成步数和目标步数：

  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);
    }
  }

设置进度：

  public void setprogress(int progress) {
    this.mprogress = progress;
    this.invalidate();
  }

设置画笔属性：

mpaint.setantialias(true);
mpaint.setcolor(color.rgb(0xe9, 0xe9, 0xe9));
canvas.drawcolor(color.transparent);
mpaint.setstrokewidth(line_width_bg);
mpaint.setstyle(paint.style.stroke);

绘制环形和背景：

canvas.drawarc(mrectf, -90, 360, false, mpaint);
mpaint.setcolor(color.rgb(0xf8, 0x60, 0x30));
canvas.drawarc(mrectf, -90, ((float) mprogress / mmaxprogress) * 360, false, mpaint);

绘制步数和单位：

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);

绘制目标步数：

 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);

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。