我需要沿着圆形路径移动圆圈，因为我正在使用Object Animator和Path评估器。所有信息都是动态的，这意味着当我收到响应时它会发生变化，因此可以在运行时更改圆的总数。这是方法的一部分，其中所有圆圈根据它们在屏幕上的位置定位自己，即如果用户释放触摸，则此方法被调用 - ：
public void slideDownSetToCenter() {
for (int i = 0; i < leftCurrentRunningAnimation.length; i++) {
Logger.i(TAG, "in slide down animation");
if (leftReadyToMove[i]) {
if (leftUpQueue.contains(i)) {
leftUpQueue.remove(i);
}
leftAngle = leftSlice * ++leftAllCirclesAngles[i];
Logger.i("circle leftAngle points of curve down", String.valueOf(leftAllCirclesAngles[i]));
if (leftAngle > leftAngleTop) {
if (i < leftCurrentRunningAnimation.length - 1) {
leftReadyToMove[i + 1] = true; // set next circle to
// move
}
}
Arrays.fill(leftCurrentRunningAnimation, false);
leftCurrentRunningAnimation[i] = true;
Logger.i(TAG, "leftAngle" + leftAngle);
if (leftReadyToMove[i] == true && leftAngle == leftAngleDownOut) {
leftReadyToMove[i] = false;
leftDownStack.add(i);
}
xPosition = (int) (leftCircleCenterX + leftCircleX * Math.cos(leftAngle));
yPosition = (int) (leftCircleCenterY + leftCircleY * Math.sin(leftAngle));
Path = new AnimatorPath();
Path.moveTo(xPosition, yPosition);
Path.lineTo(xPosition, yPosition);
while (true) {
if (leftAngle == leftAngleDownOut) {
break;
}
leftAngle = leftSlice * ++leftAllCirclesAngles[i];
xPosition = (int) (leftCircleCenterX + leftCircleX * Math.cos(leftAngle));
yPosition = (int) (leftCircleCenterY + leftCircleY * Math.sin(leftAngle));
Path.lineTo(xPosition, yPosition);
Logger.i(TAG, "path.........");
}
slideCircleAnimator = ObjectAnimator.ofObject(DynamicCircleSwipeAnimation.this, "leftButtonLocationDynamic", new PathEvaluator(), Path.getPoints().toArray());
slideCircleAnimator.setInterpolator(linearInterpolator);
slideCircleAnimator.setDuration(500);
context.runOnUiThread(new Runnable() {
@Override
public void run() {
slideCircleAnimator.start();
}
});
}
break;
}
}
这是Object animator的动画方法 - ：
public void setLeftButtonLocationDynamic(final PathPoint newLoc) {
for (int i = 0; i < leftCurrentRunningAnimation.length; i++) {
if (leftCurrentRunningAnimation[i] == true) {
Logger.i("current button id", String.valueOf(i));
leftArrayOfButtons[i].setTranslationX(newLoc.mX);
leftArrayOfButtons[i].setTranslationY(newLoc.mY);
break;
}
}
}
这里我的动画没有以正确的方式发生'为什么我需要从Object.OfObject（）方法传递我的视图引用，以便我可以在setLeftButtonLocationDynamic（最终的PathPoint newLoc，View v）中获取它。有人有任何想法我怎么能这样做？我搜索了很多并尝试开发自定义类的ObjectAnimator，ValueAnimator和ProperyViewHolder类但是当我从谷歌开源复制它然后我得到错误。任何帮助是可观的？
答案 0 :(得分：-1)
为了达到这个目的，我改变了移动所有圆圈的方法。之前，我正在使用ObjectAnimator逐个移动圆圈，现在我正在使用Animator设置x位置和y位置。我同时播放两个动画。
以下是示例 - ：
public void SlideDownFromRightAnimation() {
int rightArrayOfButtonsLength = rightArrayOfButtons.length;
Logger.i(TAG, "queue " + rightUpQueue.size() + "= stack " + rightDownStack.size());
if (rightUpQueue.size() == rtNumberOfButtons) {
Arrays.fill(rightReadyToMove, false);
rightReadyToMove[0] = true;
rightUpQueue.poll();
} else if (rightDownStack.size() == rtNumberOfButtons) {
rightUpQueue.clear();
for (int i = 0; i < rightArrayOfButtonsLength; i++) {
rightUpQueue.add(rightDownStack.pop());
rightAllCirclesAngles[i] = rightCircleUpOutPosition;
}
Arrays.fill(rightReadyToMove, false);
rightReadyToMove[0] = true;
}
for (int i = 0; i < rightArrayOfButtonsLength; i++) {
Logger.i(TAG, "in slide down animation");
if (rightReadyToMove[i]) {
if (rightUpQueue.contains(rightArrayOfButtons[i].getTag())) {
rightUpQueue.remove(i);
}
rightAngle = rightSlice * --rightAllCirclesAngles[i];
Logger.i("circle rightAngle points of curve down", String.valueOf(rightAllCirclesAngles[i]));
if (rightAngle <= rightAngleTop) {
if (i < rightArrayOfButtonsLength - 1) {
rightReadyToMove[i + 1] = true; // set next circle to
// move
}
}
Logger.i(TAG, "rightAngle" + rightAngle);
if (rightAngle <= rightAngleDownOut) {
rightReadyToMove[i] = false;
rightDownStack.add((Integer)rightArrayOfButtons[i].getTag());
rightAllCirclesAngles[i] = rightCircleDownOutPosition;
rightStartAnimation(rightAngle, null, i);
} else {
double rightAngleNext = rightSlice * rightAllCirclesAngles[i];
if (rightAngleNext <= rightAngleDownOut) {
rightReadyToMove[i] = false;
rightDownStack.add((Integer)rightArrayOfButtons[i].getTag());
}
rightStartAnimation(rightAngle, rightAngleNext, i);
}
}
}
}
这里是右轮动画功能 - ：
public void rightStartAnimation(Double rightAngle, Double rightAngleNext, int bttnId) {
xPosition = (int) (rightCircleCenterX + rightCircleX * Math.cos(rightAngle));
yPosition = (int) (rightCircleCenterY + rightCircleY * Math.sin(rightAngle));
if (rightAngleNext != null) {
xPosition = (int) (rightCircleCenterX + rightCircleX * Math.cos(rightAngleNext));
yPosition = (int) (rightCircleCenterY + rightCircleY * Math.sin(rightAngleNext));
}
final ObjectAnimator animation1 = ObjectAnimator.ofFloat(rightArrayOfButtons[bttnId], "x", rightArrayOfButtons[bttnId].getX(), xPosition);
animation1.setDuration(0);
animation1.setInterpolator(linearInterpolator);
final ObjectAnimator animation2 = ObjectAnimator.ofFloat(rightArrayOfButtons[bttnId], "y", rightArrayOfButtons[bttnId].getY(), yPosition);
animation2.setDuration(0);
animation2.setInterpolator(linearInterpolator);
final AnimatorSet set = new AnimatorSet();
set.setInterpolator(linearInterpolator);
context.runOnUiThread(new Runnable() {
@Override
public void run() {
set.playTogether(animation1, animation2);
set.start();
}
});
}