Android_属性动画-白红宇

Android_属性动画

阅读量：4290 次

发布时间：2019-05-27

本文共 2685 字，大约阅读时间需要 8 分钟。

属性动画

// Added in API level 11

public abstract class Animator extends Object implements Cloneable{}

//Known Direct Subclasses

AnimatorSet

ValueAnimator

//Known Indirect Subclasses

ObjectAnimator

TimeAnimator

//Animator的方法

addListener(Animator.AnimatorListener listener);

isPaused(); isRunning(); isStarted();

Animator clone();

start();

end();

cancel();

resume();

setDuration(long duration);

setStartDelay(long startDelay);

setTarget(Object target);

ObjectAnimator:

ObjectAnimator.ofFloat(Object target, String propertyName, float... values);

ObjectAnimator.ofInt(Object target, String propertyName, int... values);

ObjectAnimator.ofObject(T target, Property<T, V> property, TypeEvaluator<V> evaluator, V... values);

setFloatValues(float... values);

setIntValues(int... values);

setPropertyName(String propertyName);

setTarget(Object target);

//ObjectAnimator() 逐个添加参数

ValueAnimator:

//a simple timing engine for running animations which calculate animated values and set them on target objects

AnimatorSet:

playSequentially(List<Animator> items);

play(Animator anim);

playTogether(Animator... items);

playSequentially(Animator... items);

ObjectAnimator oa = ObjectAnimator.ofFloat(iv, "translationY", 10, 50,20,150);

ObjectAnimator oa = ObjectAnimator.ofFloat(iv, "scaleY", 1, 2, 1, 2,3,5,1);

ObjectAnimator oa = ObjectAnimator.ofFloat(iv, "alpha", 0, 0.5f, 0, 1,0,1,0,0);

ObjectAnimator oa = ObjectAnimator.ofFloat(iv, "rotationX", 0, 180, 90, 360);

AnimatorSet as = new AnimatorSet();

ObjectAnimator oa = ObjectAnimator.ofFloat(iv, "translationX", 10, 50, 20, 100);

ObjectAnimator oa2 = ObjectAnimator.ofFloat(iv, "scaleY", 0.1f, 2, 1, 2);

ObjectAnimator oa3 = ObjectAnimator.ofFloat(iv, "alpha", 0, 0.5f, 0, 1);

ObjectAnimator oa4 = ObjectAnimator.ofFloat(iv, "rotationY", 0, 180, 90, 360);

as.setDuration(2000);

as.setTarget(iv);

as.playSequentially(oa, oa2, oa3, oa4);

//往集合中添加动画

//挨个飞

as.playTogether(oa, oa2, oa3, oa4);

//一起飞

as.start();

xml

/res/animator/^^.xml

AnimatorInflater:

static Animator loadAnimator(Context context, int id) ;

<objectAnimator

android:propertyName="translationX"

//backgroundColor

android:duration="2000"

android:valueFrom="10"

android:valueTo="100"

android:startOffset="int"

android:repeatCount="int"

android:repeatMode="reverse"

android:valueType=""/>

<animator

android:duration=""

android:valueFrom=""

android:valueTo=""

android:repeatCount=""

android:repeatMode=""

android:interpolator=""

android:valueType=""

</set>

//代码示例

ObjectAnimator colorAnim = (ObjectAnimator)AnimatorInflater.loadAnimator(MainActivity.this,R.animator.color_anim);

color.setTarget(this);

colorAnim.start();

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