支持属性：
- 1.设置进度条类型（圆--矩形）
2.设置进度条颜色
3.设置圆的背景颜色
4.设置进度条的最大值和初始值
5.设置环型进度条是否为圆头，默认false
6.设置进度条的大小
7.设置进度字体颜色和字体大小
## 定义xml属性values下新建attrs.xml(代码如下：)
## 新建class类继承VIew,直接上代码吧！
private void setup(Context context, AttributeSet attrs) {
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyCircleProgress);
//类型
mType = typedArray.getInt(R.styleable.MyCircleProgress_progress_type, TYPE_CIRCLE);
//圆的背景颜色
circleBgColor = typedArray.getColor(R.styleable.MyCircleProgress_circleBg, Color.GRAY);
//进度条颜色
progressColor = typedArray.getColor(R.styleable.MyCircleProgress_progressColor, Color.BLUE);
//进度条的初始值
progressValue = typedArray.getInt(R.styleable.MyCircleProgress_progressValue, 0);
//进度条的最大值
progressMax = typedArray.getColor(R.styleable.MyCircleProgress_progressMax, 100);
//进度条是否为圆角
boolean isProgressRoundCap = typedArray.getBoolean(R.styleable.MyCircleProgress_progressRoundCap, false);
//百分比字体大小
int textSize = DEFAULT_TEXT_SIZE;
if (typedArray.hasValue(R.styleable.MyCircleProgress_android_textSize)) {
textSize = typedArray.getDimensionPixelSize(R.styleable.MyCircleProgress_android_textSize, DEFAULT_TEXT_SIZE);
}
//字体颜色
int textColor = DEFAULT_TEXT_COLOR;
if (typedArray.hasValue(R.styleable.MyCircleProgress_android_textColor)) {
textColor = typedArray.getColor(R.styleable.MyCircleProgress_android_textColor, DEFAULT_TEXT_COLOR);
}
//进度条大小
if (mType == TYPE_CIRCLE) {
progressWidth = typedArray.getDimensionPixelSize(R.styleable.MyCircleProgress_progressWidth, DEFAULT_PROGRESS_WIDTH);
}
typedArray.recycle();
configPaint(textColor, textSize, isProgressRoundCap);
setProgressValue(progressValue);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
mWidth = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
mHeight = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();
configShape();
setMeasuredDimension(mWidth, mHeight);
}
/**
* 配置形状 mType
*/
private void configShape() {
if (mType == TYPE_RECT) {
mBgRect = new RectF(getPaddingLeft(), getPaddingTop(), mWidth + getPaddingLeft(), mHeight + getPaddingTop());
mProgressRect = new RectF();
} else {
mCircleRadius = (Math.min(mWidth, mHeight) - progressWidth) / 2;
mCenterePoint = new Point(mWidth / 2, mHeight / 2);
}
}
@Override
protected void onDraw(Canvas canvas) {
if (mCustomCircleViewProgressBarText != null) {
mText = mCustomCircleViewProgressBarText.generateText(this, progressValue, progressMax);
}
if (mType == TYPE_RECT) {
drawRect(canvas);
} else {
drawCircle(canvas);
}
}
/**
* 圆
*
* @param canvas
*/
private void drawCircle(Canvas canvas) {
canvas.drawCircle(mCenterePoint.x, mCenterePoint.y, mCircleRadius, mBackgroundPaint);
mArcOval.left = mCenterePoint.x - mCircleRadius;
mArcOval.right = mCenterePoint.x + mCircleRadius;
mArcOval.top = mCenterePoint.y - mCircleRadius;
mArcOval.bottom = mCenterePoint.y + mCircleRadius;
canvas.drawArc(mArcOval, 270, 360 * progressValue / progressMax, false, mPaint);
if (mText != null && mText.length() > 0) {
Paint.FontMetricsInt fontMetricsInt = mTextPaint.getFontMetricsInt();
float baseline = mArcOval.top + (mArcOval.height() - fontMetricsInt.bottom + fontMetricsInt.top) / 2 - fontMetricsInt.top;
canvas.drawText(mText, mCenterePoint.x, baseline, mTextPaint);
}
}
/**
* 矩形
*
* @param canvas
*/
private void drawRect(Canvas canvas) {
canvas.drawRect(mBgRect, mBackgroundPaint);
mProgressRect.set(getPaddingLeft(), getPaddingTop(), getPaddingLeft() + parseValueToWidth(), getPaddingTop() + mHeight);
canvas.drawRect(mProgressRect, mPaint);
if (mText != null && mText.length() > 0) {
Paint.FontMetricsInt fontMetrics = mTextPaint.getFontMetricsInt();
float baseline = mBgRect.top + (mBgRect.height() - fontMetrics.bottom + fontMetrics.top) / 2 - fontMetrics.top;
canvas.drawText(mText, mBgRect.centerX(), baseline, mTextPaint);
}
}
private int parseValueToWidth() {
return mWidth * progressValue / progressMax;
}
/**
* 配置画圆
*
* @param textColor
* @param textSize
* @param isProgressRoundCap
*/
private void configPaint(int textColor, int textSize, boolean isProgressRoundCap) {
mPaint.setColor(progressColor);
mBackgroundPaint.setColor(circleBgColor);
if (mType == TYPE_RECT) {
mPaint.setStyle(Paint.Style.FILL);
mBackgroundPaint.setStyle(Paint.Style.FILL);
} else {
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeWidth(progressWidth);
mPaint.setAntiAlias(true);
if (isProgressRoundCap) {
mPaint.setStrokeCap(Paint.Cap.ROUND);
}
mBackgroundPaint.setStyle(Paint.Style.STROKE);
mBackgroundPaint.setStrokeWidth(progressWidth);
mBackgroundPaint.setAntiAlias(true);
}
mTextPaint.setColor(textColor);
mTextPaint.setTextSize(textSize);
mTextPaint.setTextAlign(Paint.Align.CENTER);
}
/**
* 设置进度值
*
* @param progress
*/
public void setProgressValue(int progress) {
setProgress(progress, true);
}
public int setProgressDefValue() {
return progressValue;
}
private void setProgress(int progress, boolean animated) {
if (progress > progressMax && progress < 0) {
return;
}
if (isAnimating) {
isAnimating = false;
mAnimator.cancel();
}
int oldValue = progressValue;
progressValue = progress;
if (animated) {
startAnimation(oldValue, progress);
} else {
invalidate();
}
}
public int getProgressMax() {
return progressMax;
}
/**
* 设置进度条最大值
*
* @param maxValue
*/
public void setProgressMax(int maxValue) {
progressMax = maxValue;
}
/**
* 动画
*
* @param start
* @param end
*/
private void startAnimation(int start, int end) {
mAnimator = ValueAnimator.ofInt(start, end);
int duration = Math.abs(1000 * (end - start) / progressMax);
mAnimator.setDuration(duration);
mAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
progressValue = (int) animation.getAnimatedValue();
invalidate();
}
});
mAnimator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
isAnimating = true;
}
@Override
public void onAnimationEnd(Animator animation) {
isAnimating = false;
}
@Override
public void onAnimationCancel(Animator animation) {
}
@Override
public void onAnimationRepeat(Animator animation) {
}
});
mAnimator.start();
}
/**
* 设置进度文案的文字大小
*
* @see #setTextColor(int)
*/
public void setTextSize(int textSize) {
mTextPaint.setTextSize(textSize);
invalidate();
}
/**
* 设置进度文案的文字颜色
*
* @see #setTextSize(int)
*/
public void setTextColor(int textColor) {
mTextPaint.setColor(textColor);
invalidate();
}
/**
* 设置环形进度条的两端是否有圆形的线帽，类型为{@link #TYPE_CIRCLE}时生效
*/
public void setProgressRoundCap(boolean isRoundCap) {
mPaint.setStrokeCap(isRoundCap ? Paint.Cap.ROUND : Paint.Cap.BUTT);
invalidate();
}
/**
* 通过 {@link CustomCircleViewProgressBarText} 设置进度文案
*/
public void setCustomCircleViewProgressBarText(CustomCircleViewProgressBarText CustomCircleViewProgressBarText) {
mCustomCircleViewProgressBarText = CustomCircleViewProgressBarText;
}
public CustomCircleViewProgressBarText getCustomCircleViewProgressBarText() {
return mCustomCircleViewProgressBarText;
}
public interface CustomCircleViewProgressBarText {
/**
* 设置进度文案, {@link CustomCircleView} 会在进度更新时调用该方法获取要显示的文案
*
* @param value 当前进度值
* @param maxValue 最大进度值
* @return 进度文案
*/
String generateText(CustomCircleView progressBar, int value, int maxValue);
}
demo图：
