Android动画Animation/Animator/LayoutTransition

动画Animation

1.Animation有5个子类： AlphaAnimation, AnimationSet, RotateAnimation, ScaleAnimation, TranslateAnimation 分别代表透明度动画，动画集合，旋转动画，缩放动画，平移动画

2.透明度动画AlphaAnimation：

//透明度显示，第一个参数是开始时的透明度，第二个参数是结束时的透明度，0代表完全透明
                Animation animation=new AlphaAnimation(0.0f,1.0f);
                animation.setDuration(3000);//设置播放时间
                mImage.startAnimation(animation);//在Image上添加动画

3.平移动画TranslateAnimation

 //平移，前两个参数是设置x轴从第一个参数位置平移到第二个参数位置，后两个参数设置y轴从第三个参数平移到第四个参数
                TranslateAnimation translateAnimation=new TranslateAnimation(-mImage.getMeasuredWidth(),0,0,0);
                translateAnimation.setDuration(3000);//设置播放时间
                mImage.startAnimation(translateAnimation);//在Image上添加动画

4.旋转动画RotateAnimation

//旋转，第一个参数是设置起始角度，第二参数是旋转角度，第三个和第四个参数设置旋转中心
                RotateAnimation rotateAnimation=new RotateAnimation(0,360,360,360);
                rotateAnimation.setDuration(3000);
                mImage.startAnimation(rotateAnimation);

5.缩放动画ScaleAnimation

//缩放，第一个和第二个参数表示沿x轴从第一个参数的比例缩放到第二个参数的比例，第三个和第四个是沿y轴进行缩放
                ScaleAnimation scaleAnimation=new ScaleAnimation(1.0f,1.5f,1.0f,1.5f);
                scaleAnimation.setDuration(3000);
                mImage.startAnimation(scaleAnimation);

6.动画集合AnimationSet

AnimationSet animationSet=new AnimationSet(false);
                Animation animation1=new AlphaAnimation(0.0f,1.0f);//透明度显示
                animation1.setDuration(3000);
                TranslateAnimation translateAnimation1=new TranslateAnimation(0,0,0,mImage.getMeasuredWidth());//平移
                translateAnimation1.setDuration(3000);
                RotateAnimation rotateAnimation1=new RotateAnimation(0,360,360,360);
                rotateAnimation1.setDuration(3000);
                ScaleAnimation scaleAnimation1=new ScaleAnimation(1.0f,0.5f,1.0f,0.5f);
                scaleAnimation1.setDuration(3000);
                animationSet.addAnimation(animation1);
                animationSet.addAnimation(translateAnimation1);
                animationSet.addAnimation(rotateAnimation1);
                animationSet.addAnimation(scaleAnimation1);
                mImage.startAnimation(animationSet);

利用xml来添加动画集合

1.在res文件夹下创建文件命名为anim，选择文件类型为animation

2.在anim文件下创建一个xml文档在里面可以添加动画集合

3.android:interpolator=”@android:anim/cycle_interpolator”表示Android自带的播放动画

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/cycle_interpolator">
    <rotate
        android:duration="3000"
        android:fromDegrees="0"
        android:pivotX="360"
        android:pivotY="360"
        android:repeatCount="2"
        android:toDegrees="360"></rotate>
    <scale
        android:startOffset="3000"
        android:duration="3000"
        android:fromXScale="1.0"
        android:toXScale="0.5"
        android:fromYScale="1.0"
        android:toYScale="0.5"
        android:pivotX="50%"
        android:pivotY="50%"
        ></scale>
</set>

4.调用方法

  Animation animaitonxml= AnimationUtils.loadAnimation(getApplicationContext(),R.anim.animi_rotate);
                mImage.startAnimation(animaitonxml);

Animator

Animator通常用来改变动画的某个属性，但是不一定只用于动画，还可以用到其他的地方##
1.在res文件夹下创建animator文件，选择文件类型为animator

2.创建一个xml文档

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:ordering="together">
    <objectAnimator
        android:duration="2000"
        android:repeatCount="0"
        android:propertyName="scaleX"
        android:valueFrom="0.5"
        android:valueTo="1"
        >
    </objectAnimator>
    <objectAnimator
        android:duration="2000"
        android:repeatCount="0"
        android:propertyName="scaleY"
        android:valueFrom="0.5"
        android:valueTo="1"
        >
    </objectAnimator>
</set>

3.调用

Animator animator=AnimatorInflater.loadAnimator(getApplicationContext(), R.animator.animator_translate);
        animator.setTarget(mImage);
        animator.start();

LayoutTransition

1.用来给布局添加一个View时添加的动画

2.在布局中创建一个LinearLayout，然后在该LinearLayout中添加button

 count++;
                final Button button=new Button(getApplicationContext());
                ViewGroup.LayoutParams params=new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
                button.setLayoutParams(params);
                button.setText("按钮"+count);
                button.setScaleX(0f);
                button.setScaleY(0f);
                button.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mLinear.removeView(button);
                    }
                });
                mLinear.addView(button);

3.添加button和删去button时添加的动画

LayoutTransition transition=new LayoutTransition();
        transition.getDuration(2000);
        transition.setAnimator(LayoutTransition.APPEARING,AnimatorInflater.loadAnimator(getApplicationContext(),R.animator.animator_translate));
        transition.setAnimator(LayoutTransition.CHANGE_APPEARING,transition.getAnimator(LayoutTransition.CHANGE_APPEARING));
        transition.setAnimator(LayoutTransition.CHANGING,transition.getAnimator(LayoutTransition.CHANGE_APPEARING));
        transition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING,transition.getAnimator(LayoutTransition.CHANGE_APPEARING));
        transition.setAnimator(LayoutTransition.DISAPPEARING,transition.getAnimator(LayoutTransition.CHANGE_APPEARING));
        mLinear.setLayoutTransition(transition);