我希望在使用动画时获得视图的位置。检查我使用view.getBottom（）的位置;而是显示不同的位置，它显示一个恒定的值。我想知道如何在使用动画时更改视图的位置。我在android中从上到下移动视图。
move.xml
<?xml version="1.0" encoding="utf-8"?>
<set
xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/linear_interpolator"
android:fillAfter="true">
<!-- android:repeatCount="infinite" -->
<translate
android:fromYDelta="0%p"
android:toYDelta="90%p"
android:duration="800"
/>
</set>
onCreate(){
anim = AnimationUtils.loadAnimation(getApplicationContext(), R.drawable.move);
anim.setAnimationListener(new AnimationListener() {
int t=0,b=0,k=0; `
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
bullet[0].layout(0, 0, bullet[0].getWidth(), bullet[0].getBottom());
bullet[0].startAnimation(animation);
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
t=t+k;
b=b+k;
bullet[0].layout(0, t+bullet[0].getHeight(), bullet[0].getWidth(), b+bullet[0].getHeight());
bullet[0].startAnimation(animation);
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
k=-k;
onAnimationRepeat(animation);
}
});
bullet[0].startAnimation(anim);
答案 0 :(得分：0)
您可以使用像此一样的getLocation方法获取任何视图的位置
int location[] = new int[2];
view.getLocationOnScreen(location);
System.out.println("x="+location[0] + "y=" + location[1]);
此处视图可以是按钮或imageview任何内容..基于此，您可以更改视图的位置..
编辑1： 你可以制作你的自定义翻译动画类...并使用一个回调监听器来获取坐标...从CustomTranslate动画类的应用转换方法调用监听器的方法。只需使用与TranslateAnimation.java中相同的代码.. < / p>
public class CustomTranslateAnimation extends Animation {
private int mFromXType = ABSOLUTE;
private int mToXType = ABSOLUTE;
private int mFromYType = ABSOLUTE;
private int mToYType = ABSOLUTE;
private float mFromXValue = 0.0f;
private float mToXValue = 0.0f;
private float mFromYValue = 0.0f;
private float mToYValue = 0.0f;
private float mFromXDelta;
private float mToXDelta;
private float mFromYDelta;
private float mToYDelta;
private Context mContext;
/**
* Constructor used when a TranslateAnimation is loaded from a resource.
*
* @param context
* Application context to use
* @param attrs
* Attribute set from which to read values
*/
public CustomTranslateAnimation(Context context, AttributeSet attrs) {
super(context, attrs);
// TypedArray a = context.obtainStyledAttributes(attrs,
// com.android.internal.R.styleable.TranslateAnimation);
//
// Description d = Description.parseValue(a.peekValue(
// com.android.internal.R.styleable.TranslateAnimation_fromXDelta));
// mFromXType = d.type;
// mFromXValue = d.value;
//
// d = Description.parseValue(a.peekValue(
// com.android.internal.R.styleable.TranslateAnimation_toXDelta));
// mToXType = d.type;
// mToXValue = d.value;
//
// d = Description.parseValue(a.peekValue(
// com.android.internal.R.styleable.TranslateAnimation_fromYDelta));
// mFromYType = d.type;
// mFromYValue = d.value;
//
// d = Description.parseValue(a.peekValue(
// com.android.internal.R.styleable.TranslateAnimation_toYDelta));
// mToYType = d.type;
// mToYValue = d.value;
//
// a.recycle();
}
/**
* Constructor to use when building a TranslateAnimation from code
*
* @param fromXDelta
* Change in X coordinate to apply at the start of the animation
* @param toXDelta
* Change in X coordinate to apply at the end of the animation
* @param fromYDelta
* Change in Y coordinate to apply at the start of the animation
* @param toYDelta
* Change in Y coordinate to apply at the end of the animation
*/
public CustomTranslateAnimation(float fromXDelta, float toXDelta,
float fromYDelta, float toYDelta, Context context) {
mFromXValue = fromXDelta;
mToXValue = toXDelta;
mFromYValue = fromYDelta;
mToYValue = toYDelta;
mContext = context;
mFromXType = ABSOLUTE;
mToXType = ABSOLUTE;
mFromYType = ABSOLUTE;
mToYType = ABSOLUTE;
}
/**
* Constructor to use when building a TranslateAnimation from code
*
* @param fromXType
* Specifies how fromXValue should be interpreted. One of
* Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or
* Animation.RELATIVE_TO_PARENT.
* @param fromXValue
* Change in X coordinate to apply at the start of the animation.
* This value can either be an absolute number if fromXType is
* ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise.
* @param toXType
* Specifies how toXValue should be interpreted. One of
* Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or
* Animation.RELATIVE_TO_PARENT.
* @param toXValue
* Change in X coordinate to apply at the end of the animation.
* This value can either be an absolute number if toXType is
* ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise.
* @param fromYType
* Specifies how fromYValue should be interpreted. One of
* Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or
* Animation.RELATIVE_TO_PARENT.
* @param fromYValue
* Change in Y coordinate to apply at the start of the animation.
* This value can either be an absolute number if fromYType is
* ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise.
* @param toYType
* Specifies how toYValue should be interpreted. One of
* Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF, or
* Animation.RELATIVE_TO_PARENT.
* @param toYValue
* Change in Y coordinate to apply at the end of the animation.
* This value can either be an absolute number if toYType is
* ABSOLUTE, or a percentage (where 1.0 is 100%) otherwise.
*/
public CustomTranslateAnimation(int fromXType, float fromXValue,
int toXType, float toXValue, int fromYType, float fromYValue,
int toYType, float toYValue) {
mFromXValue = fromXValue;
mToXValue = toXValue;
mFromYValue = fromYValue;
mToYValue = toYValue;
mFromXType = fromXType;
mToXType = toXType;
mFromYType = fromYType;
mToYType = toYType;
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
float dx = mFromXDelta;
float dy = mFromYDelta;
if (mFromXDelta != mToXDelta) {
dx = mFromXDelta + ((mToXDelta - mFromXDelta) * interpolatedTime);
}
if (mFromYDelta != mToYDelta) {
dy = mFromYDelta + ((mToYDelta - mFromYDelta) * interpolatedTime);
}
t.getMatrix().setTranslate(dx, dy);
((CheckCollosion) mContext).check(dx, dy);
}
@Override
public void initialize(int width, int height, int parentWidth,
int parentHeight) {
super.initialize(width, height, parentWidth, parentHeight);
mFromXDelta = resolveSize(mFromXType, mFromXValue, width, parentWidth);
mToXDelta = resolveSize(mToXType, mToXValue, width, parentWidth);
mFromYDelta = resolveSize(mFromYType, mFromYValue, height, parentHeight);
mToYDelta = resolveSize(mToYType, mToYValue, height, parentHeight);
}
}
编辑2：
此链接将指导您Moving the image according to the Button click
逐步移动视图..
答案 1 :(得分：0)
我使用ValueAnimator
解决了这个问题 va=ValueAnimator.ofFloat(0.0f,size.y);
va.setDuration(5000);
va.setRepeatCount(va.INFINITE);
va.setRepeatMode(va.REVERSE);
va.start();
va.addUpdateListener(new AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
// TODO Auto-generated method stub
bullet[0].setTranslationY((Float) va.getAnimatedValue());
Rect R11=new Rect(bullet[0].getLeft(),bullet[0].getTop()+(int)bullet[0].getTranslationY(),bullet[0].getRight(),bullet[0].getBottom()+(int)bullet[0].getTranslationY());
Rect R21=new Rect(ball.getLeft(), ball.getTop(), ball.getRight(), ball.getBottom());
if(R11.intersect(R21))
va.cancel();
}
});