private void hideCard(int which) {
if (isAnimating) return;
List<Animator> animators = new ArrayList<>(mChildCount);
final View displayingCard = getChildAt(which);
int t = (int) (getMeasuredHeight() - (mChildCount - which) * mTitleBarHeightNoDisplay);
ValueAnimator displayAnimator =
ValueAnimator.ofFloat(ViewHelper.getY(displayingCard), t).setDuration(mDuration);
displayAnimator.setTarget(displayingCard);
final int finalT = t;
displayAnimator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
float value = (float) valueAnimator.getAnimatedValue();
ViewHelper.setY(displayingCard, value);
if (mDarkFrameLayout != null && isFade && value < finalT) {
mDarkFrameLayout.fade((int) ((1 - value / finalT) * DarkFrameLayout.MAX_ALPHA));
}
}
});
animators.add(displayAnimator);
for (int i = 0; i < mChildCount; i++) {
if (i == 0 && isExistBackground) continue;
if (i != which) {
t = (int) (getMeasuredHeight() - (mChildCount - i) * mTitleBarHeightNoDisplay);
animators.add(
ObjectAnimator.ofFloat(getChildAt(i), "y", ViewHelper.getY(getChildAt(i)), t));
}
}
AnimatorSet set = new AnimatorSet();
set.addListener(
new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animator) {
isAnimating = true;
}
@Override
public void onAnimationEnd(Animator animator) {
isAnimating = false;
isDisplaying = false;
}
@Override
public void onAnimationCancel(Animator animator) {
isAnimating = false;
isDisplaying = false;
}
@Override
public void onAnimationRepeat(Animator animator) {}
});
set.setInterpolator(mCloseAnimatorInterpolator);
set.playTogether(animators);
set.start();
mDisplayingCard = -1;
if (mOnDisplayOrHideListener != null)
mOnDisplayOrHideListener.onHide(isExistBackground ? (which - 1) : which);
}
private boolean handleActionDown(MotionEvent event) {
boolean isConsume = false;
mPressStartTime = System.currentTimeMillis();
firstDownY = downY = event.getY();
firstDownX = event.getX();
int childCount = isExistBackground ? (mChildCount - 1) : mChildCount;
// Judge which card on touching
if (!isDisplaying && downY > (getMeasuredHeight() - mChildCount * mTitleBarHeightNoDisplay)) {
for (int i = 1; i <= mChildCount; i++) {
if (downY
< (getMeasuredHeight()
- mChildCount * mTitleBarHeightNoDisplay
+ mTitleBarHeightNoDisplay * i)) {
whichCardOnTouch = i - 1;
isTouchOnCard = true;
if (mOnDisplayOrHideListener != null)
mOnDisplayOrHideListener.onTouchCard(whichCardOnTouch);
isConsume = true;
break;
}
}
mTouchingViewOriginY = ViewHelper.getY(getChildAt(whichCardOnTouch));
} else if (isDisplaying
&& downY > (getMeasuredHeight() - (childCount - 1) * mTitleBarHeightDisplay)) {
hideCard(mDisplayingCard);
} else if (isDisplaying
&& downY > mMarginTop
&& mDisplayingCard >= 0
&& downY < getChildAt(mDisplayingCard).getMeasuredHeight() + mMarginTop) {
whichCardOnTouch = mDisplayingCard;
isTouchOnCard = true;
} else if (isDisplaying
&& (downY < mMarginTop
|| (mDisplayingCard >= 0
&& (downY > mMarginTop + getChildAt(mDisplayingCard).getMeasuredHeight())))) {
hideCard(mDisplayingCard);
}
if (isExistBackground && whichCardOnTouch == 0) {
isTouchOnCard = false;
}
return isConsume;
}
private void displayCard(int which) {
if (isDisplaying || isAnimating) return;
if (isFade && mDarkFrameLayout != null) mDarkFrameLayout.fade(true);
List<Animator> animators = new ArrayList<>(mChildCount);
final float distance = ViewHelper.getY(getChildAt(which)) - mMarginTop;
ValueAnimator displayAnimator =
ValueAnimator.ofFloat(ViewHelper.getY(getChildAt(which)), mMarginTop)
.setDuration(mDuration);
displayAnimator.setTarget(getChildAt(which));
final View displayingView = getChildAt(which);
displayAnimator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
float value = (float) valueAnimator.getAnimatedValue();
ViewHelper.setY(displayingView, value);
if (mDarkFrameLayout != null && isFade) {
mDarkFrameLayout.fade(
(int) ((1 - (value - mMarginTop) / distance) * DarkFrameLayout.MAX_ALPHA));
}
}
});
animators.add(displayAnimator);
int n = isExistBackground ? (mChildCount - 1) : mChildCount;
for (int i = 0, j = 1; i < mChildCount; i++) {
if (i == 0 && isExistBackground) continue;
if (i != which) {
animators.add(
ObjectAnimator.ofFloat(
getChildAt(i),
"y",
ViewHelper.getY(getChildAt(i)),
getMeasuredHeight() - mTitleBarHeightDisplay * (n - j))
.setDuration(mDuration));
j++;
}
}
AnimatorSet set = new AnimatorSet();
set.addListener(
new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animator) {
isAnimating = true;
}
@Override
public void onAnimationEnd(Animator animator) {
isAnimating = false;
}
@Override
public void onAnimationCancel(Animator animator) {
isAnimating = false;
}
@Override
public void onAnimationRepeat(Animator animator) {}
});
set.setInterpolator(mOpenAnimatorInterpolator);
set.playTogether(animators);
set.start();
isDisplaying = true;
mDisplayingCard = which;
if (mOnDisplayOrHideListener != null)
mOnDisplayOrHideListener.onDisplay(isExistBackground ? (which - 1) : which);
}
