先上效果图：

自定义控件：AttendanceProgressBar

代码如下：

public class AttendanceProgressBar extends View {

// 画圆环底部的画笔

private Paint mCirclePaint;

// 画圆环的画笔

private Paint mRingPaint;

// 画字体的画笔

private Paint mTextPaint;

// 圆形颜色

private int mCircleColor;

// 圆环颜色

private int mRingColor;

// 半径

private float mRadius;

// 圆环半径

private float mRingRadius;

// 圆环宽度

private float mStrokeWidth;

// 圆心x坐标

private int mXCenter;

// 圆心y坐标

private int mYCenter;

// 字的长度

private float mTxtWidth;

// 字的高度

private float mTxtHeight;

// 总进度

private int mTotalProgress = 100;

// 当前进度

private int mProgress = 80;

//字体颜色

private int mTextColor;

// 字体大小

private float mTextSize;

public AttendanceProgressBar(Context context, AttributeSet attrs) {

super(context, attrs);

// 获取自定义的属性

initAttrs(context, attrs);

initVariable();

}

private void initAttrs(Context context, AttributeSet attrs) {

TypedArray typeArray = context.getTheme().obtainStyledAttributes(attrs,

R.styleable.AttendanceProgressBar, 0, 0);

mRadius = typeArray.getDimension(R.styleable.AttendanceProgressBar_radius, 80);

mStrokeWidth = typeArray.getDimension(R.styleable.AttendanceProgressBar_strokeWidth, 10);

mCircleColor = typeArray.getColor(R.styleable.AttendanceProgressBar_circleColor, 0xFFFFFFFF);

mRingColor = typeArray.getColor(R.styleable.AttendanceProgressBar_ringColor, 0xFFFFFFFF);

mTextColor = typeArray.getColor(R.styleable.AttendanceProgressBar_textColor, 0xFF000000);

mTextSize = typeArray.getDimension(R.styleable.AttendanceProgressBar_textSize, 80);

mRingRadius = mRadius + mStrokeWidth / 2;

}

private void initVariable() {

mCirclePaint = new Paint();

mCirclePaint.setAntiAlias(true);

mCirclePaint.setColor(mCircleColor);

// mCirclePaint.setStyle(Paint.Style.FILL);

mCirclePaint.setStyle(Paint.Style.STROKE);

mCirclePaint.setStrokeWidth(mStrokeWidth);

mRingPaint = new Paint();

mRingPaint.setAntiAlias(true);

mRingPaint.setColor(mRingColor);

mRingPaint.setStyle(Paint.Style.STROKE);

mRingPaint.setStrokeWidth(mStrokeWidth);

mTextPaint = new Paint();

mTextPaint.setAntiAlias(true);

mTextPaint.setStyle(Paint.Style.FILL);

mTextPaint.setColor(mTextColor);

// mTextPaint.setARGB(255, 255, 255, 255);

// mTextPaint.setTextSize(mRadius / 2);

mTextPaint.setTextSize(mTextSize);

Paint.FontMetrics fm = mTextPaint.getFontMetrics();

mTxtHeight = (int) Math.ceil(fm.descent - fm.ascent);

}

@Override

protected void onDraw(Canvas canvas) {

mXCenter = getWidth() / 2;

mYCenter = getHeight() / 2;

// canvas.drawCircle(mXCenter, mYCenter, mRadius, mCirclePaint);

canvas.drawCircle(mXCenter, mYCenter, mRingRadius, mCirclePaint);

RectF oval = new RectF();

oval.left = (mXCenter - mRingRadius);

oval.top = (mYCenter - mRingRadius);

oval.right = mRingRadius * 2 + (mXCenter - mRingRadius);

oval.bottom = mRingRadius * 2 + (mYCenter - mRingRadius);

canvas.drawArc(oval, -90, ((float) mProgress / mTotalProgress) * 360, false, mRingPaint); //

// canvas.drawCircle(mXCenter, mYCenter, mRadius + mStrokeWidth / 2, mRingPaint);

// String txt = mProgress + "%";

String txt = "16/18";

mTxtWidth = mTextPaint.measureText(txt, 0, txt.length());

// canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter + mTxtHeight / 4, mTextPaint);

canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter + mTxtHeight / 4 - dipToPx(10), mTextPaint);

txt = "出勤人数";

mTxtWidth = mTextPaint.measureText(txt, 0, txt.length());

canvas.drawText(txt, mXCenter - mTxtWidth / 2, mYCenter + mTxtHeight / 4 + dipToPx(10), mTextPaint);

}

public void setProgress(int progress) {

mProgress = progress;

postInvalidate();

}

private int dipToPx(int dip) {

float scale = getContext().getResources().getDisplayMetrics().density;

return (int) (dip * scale + 0.5f * (dip >= 0 ? 1 : -1));

}

}

因为是自定义控件，所以在attr.xml文件定义了一些控件属性，以便在xml文件中设置这些属性

代码如下：

最后，在xml文件中，可以这样使用

android:layout_gravity="center"

android:layout_width="100dp"

android:layout_height="100dp"

app:radius="45dp"

app:strokeWidth="5dp"

app:textSize="@dimen/text_16"

app:textColor="@color/color_333333"

app:circleColor="@color/color_d5ebfd"

app:ringColor="@color/color_2c9df7"/>

这只是初步处理，使用时可以根据需求酌情处理。

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dt猫。