我试图在max_height
和min_height
值之间移动一个对象,我发现了一段代码,我试图调整它,但是对象({{ 1}})在屏幕的整个高度移动,当我试图移动对象在移动之前重新出现在另一个位置时,我不知道如何使其适应我的需要,任何想法?
CardView
更新解决方案:
在任何卡片实例中重置public interface OnLayoutCloseListener {
void OnLayoutClosed();
}
enum Direction {
UP_DOWN,
LEFT_RIGHT,
NONE
}
private Direction direction = Direction.NONE;
private int previousFingerPositionY;
private int previousFingerPositionX;
private int baseLayoutPosition;
private boolean isScrollingUp;
private boolean isLocked = false;
private OnLayoutCloseListener listener;
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (isLocked) {
return false;
} else {
final int y = (int) ev.getRawY();
final int x = (int) ev.getRawX();
if (ev.getActionMasked() == MotionEvent.ACTION_DOWN) {
previousFingerPositionX = x;
previousFingerPositionY = y;
} else if (ev.getActionMasked() == MotionEvent.ACTION_MOVE) {
int diffY = y - previousFingerPositionY;
int diffX = x - previousFingerPositionX;
if (Math.abs(diffX) + 50 < Math.abs(diffY)) {
return true;
}
}
return false;
}
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (!isLocked) {
final int y = (int) ev.getRawY();
final int x = (int) ev.getRawX();
if (ev.getActionMasked() == MotionEvent.ACTION_DOWN) {
previousFingerPositionX = x;
previousFingerPositionY = y;
baseLayoutPosition = (int) this.getY();
} else if (ev.getActionMasked() == MotionEvent.ACTION_MOVE) {
int diffY = y - previousFingerPositionY;
int diffX = x - previousFingerPositionX;
if (direction == Direction.NONE) {
if (Math.abs(diffX) > Math.abs(diffY)) {
direction = Direction.LEFT_RIGHT;
} else if (Math.abs(diffX) < Math.abs(diffY)) {
direction = Direction.UP_DOWN;
} else {
direction = Direction.NONE;
}
}
if (direction == Direction.UP_DOWN) {
isScrollingUp = diffY <= 0;
this.setY(baseLayoutPosition + diffY);
requestLayout();
return true;
}
} else if (ev.getActionMasked() == MotionEvent.ACTION_UP) {
if (direction == Direction.UP_DOWN) {
if (isScrollingUp) {
//Calculates height according to my needs
int max_height = height - (card.getHeight() + toolbar.getHeight());
if (Math.abs(this.getY()) > max_height) {
if (listener != null) {
listener.OnLayoutClosed();
}
}
} else {
//Calculates height according to my needs
int min_height = height - ((int)(toolbar.getHeight() * 1.7));
if (Math.abs(this.getY()) > min_height) {
if (listener != null) {
listener.OnLayoutClosed();
}
}
}
ObjectAnimator positionAnimator = ObjectAnimator.ofFloat(card, "y", this.getY(), 0);
positionAnimator.setDuration(0);
positionAnimator.start();
direction = Direction.NONE;
return true;
}
direction = Direction.NONE;
}
return true;
}
return false;
}
public void setOnLayoutCloseListener(OnLayoutCloseListener closeListener) {
this.listener = closeListener;
}
public void lock() {
isLocked = true;
}
public void unLock() {
isLocked = false;
}
:
LayoutParam
使用此代码进行card.setLayoutParams(new FrameLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
和min_height
max_height
答案 0 :(得分:1)
int pressedx,pressedy;
int viewMariginX,viewMariginY;
@Override
public boolean onTouch(View v, MotionEvent event) {
int currentx=(int) event.getRawX();
int currenty=(int) event.getRawY();
//get Layout Param of your cardView
FrameLayout.LayoutParams layoutParams = (FrameLayout.LayoutParams) v.getLayoutParams();
switch(event.getAction())
{
case MotionEvent.ACTION_DOWN :
pressedx=currentx;
pressedy=currenty;
viewMariginX=layoutParams.leftMargin;
viewMariginY=layoutParams.topMargin;
break;
case MotionEvent.ACTION_MOVE :
int diffx=currentx-pressedx;
int diffy=currenty-pressedy;
int marginx=viewMariginX+diffx;
int marginy=viewMariginY+diffy;
layoutParams.leftMargin=marginx;
layoutParams.topMargin=marginy;
v.setLayoutParams(layoutParams);
break;
case MotionEvent.ACTION_UP :
int diffx2=currentx-pressedx;
int diffy2=currenty-pressedy;
int marginx2=viewMariginX+diffx2;
int marginy2=viewMariginY+diffy2;
layoutParams.leftMargin=marginx2;
layoutParams.topMargin=marginy2;
v.setLayoutParams(layoutParams);
break;
}
return true;
}
您的参考资料与我几天前所做的相似。
它需要两个位置的差异,并将它们从左侧和顶部添加到当前的视图边距。
您可以通过保存这些边距值来保留视图的位置。
注意:您必须处理MAX和MIN Bounds
希望它可以帮助你...<强>更新强>: 1) 根据需要在onTouchListners上附加任意数量的卡片视图
cardview.setOnTouchListener(本); cardview1.setOnTouchListener(本);
OnTouch(View v,MotionEvent事件) 将触摸事件调度到视图时调用。这允许侦听器有机会在目标视图之前做出响应。
由OnTouchListener中的onTouch(...)指定 参数: v:已分派触摸事件的视图。 event:包含有关事件的完整信息的MotionEvent对象。 通过文档。
将onTouch中的cardview更改为v
从你的问题
FrameLayout.LayoutParams layoutParams =(FrameLayout.LayoutParams)v.getLayoutParams();
ObjectAnimator positionAnimator = ObjectAnimator.ofFloat(v,“y”,this.getY(),marginy); positionAnimator.setDuration(0); positionAnimator.start();
以相同的方法更改进一步的引用。
2)设置边界的问题很简单在更改位置之前进行条件检查。
抱歉说不好。
答案 1 :(得分:0)
这个动画:
ObjectAnimator positionAnimator = ObjectAnimator.ofFloat(card, "y", this.getY(), 0);
将垂直轴上的视图从this.getY()
y位置移动到0(屏幕顶部)。
我看到您正在设置某些界限max_height
和min_height
,但您并未以任何方式使用它们。
我不确定您的要求是什么,但您可以这样做:
ObjectAnimator positionAnimator = ObjectAnimator.ofFloat(card, "y", this.getY(), (Math.abs(this.getY() - min_height) < Math.abs(this.getY() - max_height))?min_height:max_height);
这样做的目的是根据最接近的对象将对象移动到min_height
或max_height
。
此视图似乎也会通过此调用this.setY(baseLayoutPosition + diffY); requestLayout();
设置动画,您必须确保baseLayoutPosition + diffY
在范围内,例如:
int amount = baseLayoutPosition + diffY;
this.setY(Math.min(max_height, Math.max(min_height, amount)));