android 属性动画实例,Android 属性动画Animator工具类代码案例
代碼分享->
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package?com.ldw.dreamblinkfeed.util;
import?com.ldw.dreamblinkfeed.R;
import?android.animation.Animator;
import?android.animation.Animator.AnimatorListener;
import?android.animation.ObjectAnimator;
import?android.view.View;
/**
*?屬性動(dòng)畫工具類
*?@author?ldw
*/
public?class?AnimatorUtil?{
/**
*?Y軸移動(dòng)view
*?@param?view
*?@param?fromY
*?@param?toY
*?@param?duration
*/
public?static?void?translateY(View?view,?float?fromY,?float?toY,?long?duration){
view.setVisibility(View.VISIBLE);
ObjectAnimator?translateAnimator?=?ObjectAnimator.ofFloat(view,?"translationY",?fromY,?toY);
translateAnimator.setDuration(duration);
translateAnimator.start();
}
/**
*?X軸移動(dòng)view
*?@param?view
*?@param?fromX
*?@param?toX
*?@param?duration
*/
public?static?void?translateX(View?view,?float?fromX,?float?toX,?long?duration){
view.setVisibility(View.VISIBLE);
ObjectAnimator?translateAnimator?=?ObjectAnimator.ofFloat(view,?"translationX",?fromX,?toX);
translateAnimator.setDuration(duration);
translateAnimator.start();
}
/**
*?view在Y軸移動(dòng)后，把view設(shè)置為Gone狀態(tài)
*?@param?view
*?@param?fromY
*?@param?toY
*?@param?duration
*/
public?static?void?translateYToGone(final?View?view,?float?fromY,?float?toY,?long?duration){
animatorToGone("translationY",?view,?fromY,?toY,?duration);
}
/**
*?View透明度漸變后，設(shè)置為Gone狀態(tài)
*?@param?view
*?@param?fromAlpha
*?@param?toAlpha
*?@param?duration
*/
public?static?void?alphaToGone(final?View?view,?float?fromAlpha,?float?toAlpha,?long?duration){
animatorToGone("alpha",?view,?fromAlpha,?toAlpha,?duration);
}
/**
*?指定的view做完指定動(dòng)畫后消失
*?@param?animator
*?@param?view
*?@param?from
*?@param?to
*?@param?duration
*/
private?static?void?animatorToGone(String?animator,?final?View?view,?float?from,?float?to,?long?duration){
view.setVisibility(View.VISIBLE);
ObjectAnimator?objectAnimator?=?ObjectAnimator.ofFloat(view,?animator,?from,?to);
objectAnimator.setDuration(duration);
objectAnimator.start();
view.setTag(R.id.view_animator_tag,?"start");
objectAnimator.addListener(new?AnimatorListener()?{
@Override
public?void?onAnimationStart(Animator?animation)?{
}
@Override
public?void?onAnimationRepeat(Animator?animation)?{
}
@Override
public?void?onAnimationEnd(Animator?animation)?{
view.setTag(R.id.view_animator_tag,?"end");
view.setVisibility(View.GONE);
view.setAlpha(1);
}
@Override
public?void?onAnimationCancel(Animator?animation)?{
}
});
}
/**
*?獲取該view是否正在執(zhí)行動(dòng)畫。該view執(zhí)行的動(dòng)畫必須是有監(jiān)聽動(dòng)畫結(jié)束的，例如調(diào)用了animatorToGone方法的
*?@param?view
*?@returntrue?正在執(zhí)行動(dòng)畫，false?動(dòng)畫執(zhí)行完畢或者沒有執(zhí)行動(dòng)畫
*/
public?static?boolean?isAnimatorWithView(final?View?view){
String?tag?=?(String)?view.getTag(R.id.view_animator_tag);
if(tag?!=?null?&&?tag.equalsIgnoreCase("start")){
return?true;
}
return?false;
}
}
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其中R.id.view_animator_tag必須是定義在Strings.xml中
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