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public class CircularProgressView extends View {
private Paint mBackPaint, mProgPaint;
private RectF mRectF;
private int[] mColorArray;
private int mProgress;
public CircularProgressView(Context context) {
this(context, null);
}
public CircularProgressView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs, 0);
}
public CircularProgressView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
@SuppressLint("Recycle")
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CircularProgressView);
mBackPaint = new Paint();
mBackPaint.setStyle(Paint.Style.STROKE);
mBackPaint.setStrokeCap(Paint.Cap.ROUND);
mBackPaint.setAntiAlias(true);
mBackPaint.setDither(true);
mBackPaint.setStrokeWidth(typedArray.getDimension(R.styleable.CircularProgressView_backWidth, 5));
mBackPaint.setColor(typedArray.getColor(R.styleable.CircularProgressView_backColor, Color.LTGRAY));
mProgPaint = new Paint();
mProgPaint.setStyle(Paint.Style.STROKE);
mProgPaint.setStrokeCap(Paint.Cap.ROUND);
mProgPaint.setAntiAlias(true);
mProgPaint.setDither(true);
mProgPaint.setStrokeWidth(typedArray.getDimension(R.styleable.CircularProgressView_progWidth, 10));
mProgPaint.setColor(typedArray.getColor(R.styleable.CircularProgressView_progColor, Color.BLUE));
int startColor = typedArray.getColor(R.styleable.CircularProgressView_progStartColor, -1);
int firstColor = typedArray.getColor(R.styleable.CircularProgressView_progFirstColor, -1);
if (startColor != -1 && firstColor != -1) mColorArray = new int[]{startColor, firstColor};
else mColorArray = null;
mProgress = typedArray.getInteger(R.styleable.CircularProgressView_progress, 0);
typedArray.recycle();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int viewWide = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
int viewHigh = getMeasuredHeight() - getPaddingTop() - getPaddingBottom();
int mRectLength = (int) ((viewWide > viewHigh ? viewHigh : viewWide) - (mBackPaint.getStrokeWidth() > mProgPaint.getStrokeWidth() ? mBackPaint.getStrokeWidth() : mProgPaint.getStrokeWidth()));
int mRectL = getPaddingLeft() + (viewWide - mRectLength) / 2;
int mRectT = getPaddingTop() + (viewHigh - mRectLength) / 2;
mRectF = new RectF(mRectL, mRectT, mRectL + mRectLength, mRectT + mRectLength);
if (mColorArray != null && mColorArray.length > 1)
mProgPaint.setShader(new LinearGradient(0, 0, 0, getMeasuredWidth(), mColorArray, null, Shader.TileMode.MIRROR));
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawArc(mRectF, 0, 360, false, mBackPaint);
canvas.drawArc(mRectF, 275, 360 * mProgress / 100, false, mProgPaint);
}
public int getProgress() {
return mProgress;
}
public void setProgress(int progress) {
this.mProgress = progress;
invalidate();
}
public void setProgress(int progress, long animTime) {
if (animTime <= 0) setProgress(progress);
else {
ValueAnimator animator = ValueAnimator.ofInt(mProgress, progress);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
mProgress = (int) animation.getAnimatedValue();
invalidate();
}
});
animator.setInterpolator(new OvershootInterpolator());
animator.setDuration(animTime);
animator.start();
}
}
public void setBackWidth(int width) {
mBackPaint.setStrokeWidth(width);
invalidate();
}
public void setBackColor(@ColorRes int color) {
mBackPaint.setColor(ContextCompat.getColor(getContext(), color));
invalidate();
}
public void setProgWidth(int width) {
mProgPaint.setStrokeWidth(width);
invalidate();
}
public void setProgColor(@ColorRes int color) {
mProgPaint.setColor(ContextCompat.getColor(getContext(), color));
mProgPaint.setShader(null);
invalidate();
}
public void setProgColor(@ColorRes int startColor, @ColorRes int firstColor) {
mColorArray = new int[]{ContextCompat.getColor(getContext(), startColor), ContextCompat.getColor(getContext(), firstColor)};
mProgPaint.setShader(new LinearGradient(0, 0, 0, getMeasuredWidth(), mColorArray, null, Shader.TileMode.MIRROR));
invalidate();
}
public void setProgColor(@ColorRes int[] colorArray) {
if (colorArray == null || colorArray.length < 2) return;
mColorArray = new int[colorArray.length];
for (int index = 0; index < colorArray.length; index++)
mColorArray[index] = ContextCompat.getColor(getContext(), colorArray[index]);
mProgPaint.setShader(new LinearGradient(0, 0, 0, getMeasuredWidth(), mColorArray, null, Shader.TileMode.MIRROR));
invalidate();
}
}
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