@Override
public void onAnimationEnd(Animation animation) {
if (mRefreshing) {
// Make sure the progress view is fully visible
mProgress.setAlpha(MAX_ALPHA);
mProgress.start();
if (mNotify) {
if (mListener != null) {
mListener.onRefresh();
}
}
} else {
mProgress.stop();
mCircleView.setVisibility(View.GONE);
setColorViewAlpha(MAX_ALPHA);
// Return the circle to its start position
if (mScale) {
setAnimationProgress(0 /* animation complete and view is hidden */);
} else {
setTargetOffsetTopAndBottom(
mOriginalOffsetTop - mCurrentTargetOffsetTop, true /* requires update */);
}
}
mCurrentTargetOffsetTop = mCircleView.getTop();
}
public void setProgressRotation(float rotation) {
if (mProgressDrawable.isRunning()) {
stop();
}
mProgressDrawable.showArrow(true);
mProgressDrawable.showArrowOnFirstStart(true);
mProgressDrawable.setProgressRotation(rotation);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
if (mProgressDrawable != null) {
mProgressDrawable.stop();
mProgressDrawable.setVisible(false, false);
}
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
if (mProgressDrawable != null) {
mProgressDrawable.stop();
mProgressDrawable.setVisible(getVisibility() == VISIBLE, false);
requestLayout();
}
}
@Override
protected void onDraw(Canvas canvas) {
final int saveCount = canvas.save();
Rect rect = mDrawable.getBounds();
int l = getPaddingLeft() + (getMeasuredWidth() - mDrawable.getIntrinsicWidth()) / 2;
canvas.translate(l, getPaddingTop());
canvas.scale(mScale, mScale, rect.exactCenterX(), rect.exactCenterY());
mDrawable.draw(canvas);
canvas.restoreToCount(saveCount);
}
@Override
public void setVisibility(int visibility) {
super.setVisibility(visibility);
if (mProgressDrawable != null) {
mProgressDrawable.setVisible(visibility == VISIBLE, false);
if (visibility != VISIBLE) {
mProgressDrawable.stop();
} else {
if (mProgressDrawable.isRunning()) {
mProgressDrawable.stop();
}
}
}
}
private void createProgressView() {
mCircleView = new CircleImageView(getContext(), CIRCLE_BG_LIGHT, CIRCLE_DIAMETER / 2);
mProgress = new MaterialProgressDrawable(getContext(), this);
mProgress.setBackgroundColor(CIRCLE_BG_LIGHT);
mCircleView.setImageDrawable(mProgress);
mCircleView.setVisibility(View.GONE);
addView(mCircleView);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
ensureTarget();
final int action = MotionEventCompat.getActionMasked(ev);
if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
mReturningToStart = false;
}
if (!isEnabled() || mReturningToStart || canChildScrollUp() || mRefreshing) {
// Fail fast if we're not in a state where a swipe is possible
return false;
}
switch (action) {
case MotionEvent.ACTION_DOWN:
setTargetOffsetTopAndBottom(mOriginalOffsetTop - mCircleView.getTop(), true);
mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
mIsBeingDragged = false;
final float initialDownY = getMotionEventY(ev, mActivePointerId);
if (initialDownY == -1) {
return false;
}
mInitialDownY = initialDownY;
break;
case MotionEvent.ACTION_MOVE:
if (mActivePointerId == INVALID_POINTER) {
Log.e(LOG_TAG, "Got ACTION_MOVE event but don't have an active pointer id.");
return false;
}
final float y = getMotionEventY(ev, mActivePointerId);
if (y == -1) {
return false;
}
final float yDiff = y - mInitialDownY;
if (yDiff > mTouchSlop && !mIsBeingDragged) {
mInitialMotionY = mInitialDownY + mTouchSlop;
mIsBeingDragged = true;
mProgress.setAlpha(STARTING_PROGRESS_ALPHA);
}
break;
case MotionEventCompat.ACTION_POINTER_UP:
onSecondaryPointerUp(ev);
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
mIsBeingDragged = false;
mActivePointerId = INVALID_POINTER;
break;
}
return mIsBeingDragged;
}
@Override
public void onUIPositionChange(
PtrFrameLayout frame, boolean isUnderTouch, byte status, PtrIndicator ptrIndicator) {
float percent = Math.min(1f, ptrIndicator.getCurrentPercent());
if (status == PtrFrameLayout.PTR_STATUS_PREPARE) {
mDrawable.setAlpha((int) (255 * percent));
mDrawable.showArrow(true);
float strokeStart = ((percent) * .8f);
mDrawable.setStartEndTrim(0f, Math.min(0.8f, strokeStart));
mDrawable.setArrowScale(Math.min(1f, percent));
// magic
float rotation = (-0.25f + .4f * percent + percent * 2) * .5f;
mDrawable.setProgressRotation(rotation);
invalidate();
}
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
final float density = getContext().getResources().getDisplayMetrics().density;
mDiameter = Math.min(getMeasuredWidth(), getMeasuredHeight());
if (mDiameter <= 0) {
mDiameter = (int) density * DEFAULT_CIRCLE_DIAMETER;
}
if (getBackground() == null && mCircleBackgroundEnabled) {
final int shadowYOffset = (int) (density * Y_OFFSET);
final int shadowXOffset = (int) (density * X_OFFSET);
mShadowRadius = (int) (density * SHADOW_RADIUS);
if (elevationSupported()) {
mBgCircle = new ShapeDrawable(new OvalShape());
ViewCompat.setElevation(this, SHADOW_ELEVATION * density);
} else {
OvalShape oval = new OvalShadow(mShadowRadius, mDiameter - mShadowRadius * 2);
mBgCircle = new ShapeDrawable(oval);
ViewCompat.setLayerType(this, ViewCompat.LAYER_TYPE_SOFTWARE, mBgCircle.getPaint());
mBgCircle
.getPaint()
.setShadowLayer(mShadowRadius, shadowXOffset, shadowYOffset, KEY_SHADOW_COLOR);
final int padding = (int) mShadowRadius;
// set padding so the inner image sits correctly within the shadow.
setPadding(padding, padding, padding, padding);
}
mBgCircle.getPaint().setColor(mBackGroundColor);
setBackgroundDrawable(mBgCircle);
}
mProgressDrawable.setBackgroundColor(mBackGroundColor);
mProgressDrawable.setColorSchemeColors(mColors);
mProgressDrawable.setSizeParameters(
mDiameter,
mDiameter,
mInnerRadius <= 0 ? (mDiameter - mProgressStokeWidth * 2) / 4 : mInnerRadius,
mProgressStokeWidth,
mArrowWidth < 0 ? mProgressStokeWidth * 4 : mArrowWidth,
mArrowHeight < 0 ? mProgressStokeWidth * 2 : mArrowHeight);
if (isShowArrow()) {
mProgressDrawable.showArrowOnFirstStart(true);
mProgressDrawable.setArrowScale(1f);
mProgressDrawable.showArrow(true);
}
super.setImageDrawable(null);
super.setImageDrawable(mProgressDrawable);
mProgressDrawable.setAlpha(255);
mProgressDrawable.setStartEndTrim(0f, 0.75f);
}
@Override
public void applyTransformation(float interpolatedTime, Transformation t) {
int targetTop = 0;
int endTarget = 0;
if (!mUsingCustomStart) {
endTarget = (int) (mSpinnerFinalOffset - Math.abs(mOriginalOffsetTop));
} else {
endTarget = (int) mSpinnerFinalOffset;
}
targetTop = (mFrom + (int) ((endTarget - mFrom) * interpolatedTime));
int offset = targetTop - mCircleView.getTop();
setTargetOffsetTopAndBottom(offset, false /* requires update */);
mProgress.setArrowScale(1 - interpolatedTime);
}
/** One of DEFAULT, or LARGE. */
public void setSize(int size) {
if (size != MaterialProgressDrawable.LARGE && size != MaterialProgressDrawable.DEFAULT) {
return;
}
final DisplayMetrics metrics = getResources().getDisplayMetrics();
if (size == MaterialProgressDrawable.LARGE) {
mCircleHeight = mCircleWidth = (int) (CIRCLE_DIAMETER_LARGE * metrics.density);
} else {
mCircleHeight = mCircleWidth = (int) (CIRCLE_DIAMETER * metrics.density);
}
// force the bounds of the progress circle inside the circle view to
// update by setting it to null before updating its size and then
// re-setting it
mCircleView.setImageDrawable(null);
mProgress.updateSizes(size);
mCircleView.setImageDrawable(mProgress);
}
private void startScaleUpAnimation(AnimationListener listener) {
mCircleView.setVisibility(View.VISIBLE);
if (android.os.Build.VERSION.SDK_INT >= 11) {
// Pre API 11, alpha is used in place of scale up to show the
// progress circle appearing.
// Don't adjust the alpha during appearance otherwise.
mProgress.setAlpha(MAX_ALPHA);
}
mScaleAnimation =
new Animation() {
@Override
public void applyTransformation(float interpolatedTime, Transformation t) {
setAnimationProgress(interpolatedTime);
}
};
mScaleAnimation.setDuration(mMediumAnimationDuration);
if (listener != null) {
mCircleView.setAnimationListener(listener);
}
mCircleView.clearAnimation();
mCircleView.startAnimation(mScaleAnimation);
}
private void startScaleDownReturnToStartAnimation(
int from, Animation.AnimationListener listener) {
mFrom = from;
if (isAlphaUsedForScale()) {
mStartingScale = mProgress.getAlpha();
} else {
mStartingScale = ViewCompat.getScaleX(mCircleView);
}
mScaleDownToStartAnimation =
new Animation() {
@Override
public void applyTransformation(float interpolatedTime, Transformation t) {
float targetScale = (mStartingScale + (-mStartingScale * interpolatedTime));
setAnimationProgress(targetScale);
moveToStart(interpolatedTime);
}
};
mScaleDownToStartAnimation.setDuration(SCALE_DOWN_DURATION);
if (listener != null) {
mCircleView.setAnimationListener(listener);
}
mCircleView.clearAnimation();
mCircleView.startAnimation(mScaleDownToStartAnimation);
}
private void initView() {
mDrawable = new MaterialProgressDrawable(getContext(), this);
mDrawable.setBackgroundColor(Color.WHITE);
mDrawable.setCallback(this);
}
@Override
public void applyTransformation(float interpolatedTime, Transformation t) {
mScale = 1f - interpolatedTime;
mDrawable.setAlpha((int) (255 * mScale));
invalidate();
}
/**
* Set the background color of the progress spinner disc.
*
* @param color
*/
public void setProgressBackgroundColorSchemeColor(int color) {
mCircleView.setBackgroundColor(color);
mProgress.setBackgroundColor(color);
}
/**
* perform UI after refresh
*
* @param frame
*/
@Override
public void onUIRefreshComplete(PtrFrameLayout frame) {
mDrawable.stop();
}
/**
* perform refreshing UI
*
* @param frame
*/
@Override
public void onUIRefreshBegin(PtrFrameLayout frame) {
mDrawable.setAlpha(255);
mDrawable.start();
}
/**
* When the content view has reached top and refresh has been completed, view will be reset.
*
* @param frame
*/
@Override
public void onUIReset(PtrFrameLayout frame) {
mScale = 1f;
mDrawable.stop();
}
/**
* Set the colors used in the progress animation. The first color will also be the color of the
* bar that grows in response to a user swipe gesture.
*
* @param colors
*/
public void setColorSchemeColors(int... colors) {
ensureTarget();
mProgress.setColorSchemeColors(colors);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
final int size = mDrawable.getIntrinsicHeight();
mDrawable.setBounds(0, 0, size, size);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
final int action = MotionEventCompat.getActionMasked(ev);
if (mReturningToStart && action == MotionEvent.ACTION_DOWN) {
mReturningToStart = false;
}
if (!isEnabled() || mReturningToStart || canChildScrollUp()) {
// Fail fast if we're not in a state where a swipe is possible
return false;
}
switch (action) {
case MotionEvent.ACTION_DOWN:
mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
mIsBeingDragged = false;
break;
case MotionEvent.ACTION_MOVE:
{
final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
if (pointerIndex < 0) {
Log.e(LOG_TAG, "Got ACTION_MOVE event but have an invalid active pointer id.");
return false;
}
final float y = MotionEventCompat.getY(ev, pointerIndex);
final float overscrollTop = (y - mInitialMotionY) * DRAG_RATE;
if (mIsBeingDragged) {
mProgress.showArrow(true);
float originalDragPercent = overscrollTop / mTotalDragDistance;
if (originalDragPercent < 0) {
return false;
}
float dragPercent = Math.min(1f, Math.abs(originalDragPercent));
float adjustedPercent = (float) Math.max(dragPercent - .4, 0) * 5 / 3;
float extraOS = Math.abs(overscrollTop) - mTotalDragDistance;
float slingshotDist =
mUsingCustomStart ? mSpinnerFinalOffset - mOriginalOffsetTop : mSpinnerFinalOffset;
float tensionSlingshotPercent =
Math.max(0, Math.min(extraOS, slingshotDist * 2) / slingshotDist);
float tensionPercent =
(float) ((tensionSlingshotPercent / 4) - Math.pow((tensionSlingshotPercent / 4), 2))
* 2f;
float extraMove = (slingshotDist) * tensionPercent * 2;
int targetY = mOriginalOffsetTop + (int) ((slingshotDist * dragPercent) + extraMove);
// where 1.0f is a full circle
if (mCircleView.getVisibility() != View.VISIBLE) {
mCircleView.setVisibility(View.VISIBLE);
}
if (!mScale) {
ViewCompat.setScaleX(mCircleView, 1f);
ViewCompat.setScaleY(mCircleView, 1f);
}
if (overscrollTop < mTotalDragDistance) {
if (mScale) {
setAnimationProgress(overscrollTop / mTotalDragDistance);
}
if (mProgress.getAlpha() > STARTING_PROGRESS_ALPHA
&& !isAnimationRunning(mAlphaStartAnimation)) {
// Animate the alpha
startProgressAlphaStartAnimation();
}
float strokeStart = adjustedPercent * .8f;
mProgress.setStartEndTrim(0f, Math.min(MAX_PROGRESS_ANGLE, strokeStart));
mProgress.setArrowScale(Math.min(1f, adjustedPercent));
} else {
if (mProgress.getAlpha() < MAX_ALPHA && !isAnimationRunning(mAlphaMaxAnimation)) {
// Animate the alpha
startProgressAlphaMaxAnimation();
}
}
float rotation = (-0.25f + .4f * adjustedPercent + tensionPercent * 2) * .5f;
mProgress.setProgressRotation(rotation);
setTargetOffsetTopAndBottom(
targetY - mCurrentTargetOffsetTop, true /* requires update */);
}
break;
}
case MotionEventCompat.ACTION_POINTER_DOWN:
{
final int index = MotionEventCompat.getActionIndex(ev);
mActivePointerId = MotionEventCompat.getPointerId(ev, index);
break;
}
case MotionEventCompat.ACTION_POINTER_UP:
onSecondaryPointerUp(ev);
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
{
if (mActivePointerId == INVALID_POINTER) {
if (action == MotionEvent.ACTION_UP) {
Log.e(LOG_TAG, "Got ACTION_UP event but don't have an active pointer id.");
}
return false;
}
final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
final float y = MotionEventCompat.getY(ev, pointerIndex);
final float overscrollTop = (y - mInitialMotionY) * DRAG_RATE;
mIsBeingDragged = false;
if (overscrollTop > mTotalDragDistance) {
setRefreshing(true, true /* notify */);
} else {
// cancel refresh
mRefreshing = false;
mProgress.setStartEndTrim(0f, 0f);
Animation.AnimationListener listener = null;
if (!mScale) {
listener =
new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {}
@Override
public void onAnimationEnd(Animation animation) {
if (!mScale) {
startScaleDownAnimation(null);
}
}
@Override
public void onAnimationRepeat(Animation animation) {}
};
}
animateOffsetToStartPosition(mCurrentTargetOffsetTop, listener);
mProgress.showArrow(false);
}
mActivePointerId = INVALID_POINTER;
return false;
}
}
return true;
}
/**
* Set the colors used in the progress animation. The first color will also be the color of the
* bar that grows in response to a user swipe gesture.
*
* @param colors
*/
public void setColorSchemeColors(int... colors) {
mColors = colors;
if (mProgressDrawable != null) {
mProgressDrawable.setColorSchemeColors(colors);
}
}
public void setColorSchemeColors(int[] colors) {
mDrawable.setColorSchemeColors(colors);
invalidate();
}
public void stop() {
if (mProgressDrawable.isRunning()) {
mProgressDrawable.stop();
}
}
public void start() {
if (!mProgressDrawable.isRunning()) {
mProgressDrawable.start();
}
}
public boolean isRunning() {
return mProgressDrawable.isRunning();
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = mDrawable.getIntrinsicHeight() + getPaddingTop() + getPaddingBottom();
heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
public void setStartEndTrim(float start, float end) {
mProgressDrawable.setStartEndTrim(start, end);
}
