android动画基础（一） View动画和属性动画

view动画

1.透明度动画

//float fromAlpha, float toAlphaAlphaAnimation aa = new AlphaAnimation(0, 1);        aa.setDuration(1000);        view.startAnimation(aa);

2.旋转动画

//float fromDegrees, float toDegrees, float pivotX, float pivotY pivot为相对view左上角旋转的坐标 RotateAnimation ra = new RotateAnimation(0, 360, 100, 100);        ra.setDuration(1000);        view.startAnimation(ra);//相对于自己旋转//float fromDegrees, float toDegrees, int pivotXType,float pivotXValue,int pivotYType, float pivotYValueRotateAnimation ra = new RotateAnimation(0, 360,                RotateAnimation.RELATIVE_TO_SELF, 0.5F,                RotateAnimation.RELATIVE_TO_SELF, 0.5F);        ra.setDuration(1000);        view.startAnimation(ra);

3.位移动画

//float fromXDelta, float toXDelta, float fromYDelta, float toYDelta TranslateAnimation ta = new TranslateAnimation(0, 200, 0, 300);        ta.setDuration(1000);        view.startAnimation(ta);

4.缩放动画

//float fromX, float toX, float fromY, float toY 从0到自己的两倍大小。以左上角为基点。 ScaleAnimation sa = new ScaleAnimation(0, 2, 0, 2);        sa.setDuration(1000);        view.startAnimation(sa);//以中心为基点缩放ScaleAnimation sa = new ScaleAnimation(0, 1, 0, 1,                Animation.RELATIVE_TO_SELF, 0.5F,                Animation.RELATIVE_TO_SELF, 0.5F);        sa.setDuration(1000);        view.startAnimation(sa);

5.动画集合和监听

 AnimationSet as = new AnimationSet(true);        as.setDuration(1000);        AlphaAnimation aa = new AlphaAnimation(0, 1);        aa.setDuration(1000);        as.addAnimation(aa);        TranslateAnimation ta = new TranslateAnimation(0, 100, 0, 200);        ta.setDuration(1000);        as.addAnimation(ta);        view.startAnimation(as);as.setAnimationListener(new Animation.AnimationListener() {            @Override            public void onAnimationStart(Animation animation) {            }            @Override            public void onAnimationEnd(Animation animation) {            }            @Override            public void onAnimationRepeat(Animation animation) {            }        });

属性动画

基本api

ObjectAnimator ob = ObjectAnimator.ofFloat(object,"translationX",300);                ob.setDuration(2000);                ob.start();

属性有：translationX/Y 从view布局容器左上角坐标偏移位置
rotation rotationX/y 三个属性控制view对象围绕他的支点进行2D 3D旋转
scaleX/Y 控制的是围绕着支点的缩放
pivotX/y 控制View对象的支点 默认是中心点
x,y View 对象在容器中的最终位置，是最初左上角坐标和translationX/Y的值累计和
alpha 透明度，1 不透明 0完全透明

自定义属性动画 提供seter/getter即可

private static class WrapperView {        private View mTarget;        public WrapperView(View target) {            mTarget = target;        }        public int getWidth() {            return mTarget.getLayoutParams().width;        }        public void setWidth(int width) {            mTarget.getLayoutParams().width = width;            mTarget.requestLayout();        }    }    //使用    WrapperView vi = new WrapperView(alpha);ObjectAnimator.ofInt(vi,"width",500).setDuration(2000).start();

多个属性同时使用的api propertValuesHolder

PropertyValuesHolder pvh1 = PropertyValuesHolder.ofFloat("translationX",300f);PropertyValuesHolder pvh2 = PropertyValuesHolder.ofFloat("scaleX",1f,0,1f);PropertyValuesHolder pvh3 = PropertyValuesHolder.ofFloat("scaleY",1f,0,1f);        ObjectAnimator.ofPropertyValuesHolder(alpha,pvh1,pvh2,pvh3).setDuration(2000).start();

属性动画的核心 ValueAnimator

ValueAnimator va = ValueAnimator.ofFloat(0,100);                va.setTarget(value);                va.setDuration(2000).start();                va.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {                    @Override                    public void onAnimationUpdate(ValueAnimator animation) {                        float values = (float) animation.getAnimatedValue();                        Log.i("数值",values+"");                    }                });

属性动画的监听

ob.addListener(new Animator.AnimatorListener() {                    @Override                    public void onAnimationStart(Animator animation) {                    }                    @Override                    public void onAnimationEnd(Animator animation) {                    }                    @Override                    public void onAnimationCancel(Animator animation) {                    }                    @Override                    public void onAnimationRepeat(Animator animation) {                    }                });                //简单实现                va.addListener(new AnimatorListenerAdapter() {                    @Override                    public void onAnimationEnd(Animator animation) {                        super.onAnimationEnd(animation);                    }                });

更好的set集合动画控制
其他方法 playTogether(),playSequentially(),animSet.play().width()、before()、after()

ObjectAnimator animator1 = ObjectAnimator.ofFloat(alpha, "translationX", 300f);        ObjectAnimator animator2 = ObjectAnimator.ofFloat(alpha, "scaleX", 1f, 0, 1f);        ObjectAnimator animator3 = ObjectAnimator.ofFloat(alpha, "scaleY", 1f, 0, 1f);        AnimatorSet set = new AnimatorSet();        set.setDuration(2000);        set.playTogether(animator1,animator2,animator3);        set.start();

xml使用属性动画

<?xml version="1.0" encoding="utf-8"?><objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"    android:duration="2000"    android:propertyName="scaleX"    android:valueFrom="1.0"    android:valueTo="2.0"    android:valueType="floatType"></objectAnimator> private void scaleX(View v){        Animator anim = AnimatorInflater                .loadAnimator(this,R.animator.animator);        anim.setTarget(v);        anim.start();    }

View的animate方法

animate.animate().alpha(0).y(300).setDuration(2000).withStartAction(new Runnable() {                    @Override                    public void run() {                    }                }).withEndAction(new Runnable() {                    @Override                    public void run() {                        runOnUiThread(new Runnable() {                            @Override                            public void run() {                            }                        });                    }                }).start();

android布局动画 即addView时的动画 默认的是

android:animateLayoutChanges="true"//不可自定义 逐渐显示的过渡动画

自定义

ll = (LinearLayout) findViewById(R.id.ll);        //设置过渡动画        ScaleAnimation sa = new ScaleAnimation(0, 1, 0, 1);        sa.setDuration(2000);        LayoutAnimationController lc = new LayoutAnimationController(sa, 0.5f);        lc.setOrder(LayoutAnimationController.ORDER_NORMAL);        //设置布局动画        ll.setLayoutAnimation(lc);

LayoutAnimationController.ORDER_NORMAL 顺序
LayoutAnimationController.ORDER_RANDOM 随机
LayoutAnimationController.ORDER_REVEESE 反序

自定义动画

@Override    protected void applyTransformation(float interpolatedTime, Transformation t) {        super.applyTransformation(interpolatedTime, t);        Matrix matrix = t.getMatrix();        xxxxxxx    }

电视机关闭效果

 @Override    protected void applyTransformation(float interpolatedTime, Transformation t) {        Matrix matrix = t.getMatrix();        matrix.preScale(1, 1 - interpolatedTime, width,height);        super.applyTransformation(interpolatedTime, t);    }

@Override
public void initialize(int width, int height, int parentWidth, int parentHeight) {

    super.initialize(width, height, parentWidth, parentHeight);    setDuration(2000);    setFillAfter(true);    setInterpolator(new BounceInterpolator());    w = width / 2;    h = height / 2;}@Overrideprotected void applyTransformation(float interpolatedTime, Transformation t) {    Matrix matrix = t.getMatrix();//  matrix.preScale(1, 1 - interpolatedTime, w,h);    mCamera.save();    //设置旋转角度    mCamera.rotate(0, 180, 360);    mCamera.restore();    //通过pre方法设置矩形作用前的偏移量来改变旋转中心    matrix.preTranslate(w, h);    matrix.postTranslate(-w, -h);    super.applyTransformation(interpolatedTime, t);}