【属性动画示例】Property Animation

最新推荐文章于 2025-08-22 17:02:47 发布

转载最新推荐文章于 2025-08-22 17:02:47 发布 · 114 阅读

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本文深入探讨了Android属性动画的多种操作技巧，包括简单的ObjectAnimator使用、组合动画、PropertyValuesHolder及ValueAnimator的应用等。通过实例展示了如何实现复杂的动画效果，如抛物线运动、自定义插值器等。

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MainActivity 属性动画常用操作

// 可操控的属性有：alpha；x/y；scaleX/scaleY；rotation/rotationX/rotationY；transitionX/transitionY；pivotX/pivotY

public class MainActivity extends ListActivity {

private ImageView iv_src;

private boolean b = true;

private String[] array = { "重启当前Activity\n启动一个新的Activity",//

"最简单的ObjectAnimator，控制scaleX\n最简单的ObjectAnimator，控制rotationX", //

"不存在get/set方法时不会有任何效果\n为Object的某个属性手动提供get/set方法", //

"只有set没有get方法时，get的值不存在，但是set可以正常使用", //

"监听动画更新：AnimatorUpdateListener\n监听动画状态：AnimatorListener", //

"组合动画：AnimatorSet.playTogether\n组合动画：AnimatorSet.with/before/after",//

"组合动画：AnimatorUpdateListener\n组合动画：PropertyValuesHolder",//

"组合动画：PVHolder + KeyFrame\nView的animate动画，最简洁的属性动画",//

"View的animate动画也可以组合动画\n可以在animate动画前/后执行一些操作",//

"最简单的ValueAnimator，控制translationY\n要明白ValueAnimator只是帮你计算插值的" };

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);//全屏

requestWindowFeature(Window.FEATURE_NO_TITLE);//取消标题栏

setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new ArrayList<String>(Arrays.asList(array))));

iv_src = new ImageView(this);

iv_src.setBackgroundColor(0x330000ff);

iv_src.setImageResource(R.drawable.icon);

getListView().addHeaderView(iv_src);

}

@Override

protected void onListItemClick(ListView l, View view, int position, long id) {

switch (position) {

case 0:

b = !b;

Toast.makeText(this, "目前为：" + b, Toast.LENGTH_SHORT).show();

break;

case 1://重启当前Activity 启动一个新的Activity

if (b) {

startActivity(new Intent(this, MainActivity.class));

finish();

} else startActivity(new Intent(this, SecondActivity.class));

break;

case 2://最简单的ObjectAnimator，控制scaleX 最简单的ObjectAnimator，控制rotationX

if (b) ObjectAnimator.ofFloat(iv_src, "scaleX", 0.1f, 3f, 0.1f, 2f).setDuration(1000).start();//X轴缩放2倍

else ObjectAnimator.ofFloat(iv_src, "rotationX", 0.0f, 360.0f).setDuration(500).start();//沿X轴旋转360度

break;

case 3://不存在get/set方法时不会有任何效果为Object的某个属性手动提供get/set方法

int i = new Random().nextInt(8) + 1;

if (b) ObjectAnimator.ofFloat(iv_src, "width", 100 * i).setDuration(500).start();//没任何效果，但并不会报错

else ObjectAnimator.ofInt(new WrapperView(iv_src), "width", 100 * i).setDuration(1000).start();

break;

case 4://只有set没有get方法时，get的值不存在，但是set可以正常使用

//View有setBackgroundColor方法，但是没有getBackgroundColor方法，所以getBackgroundColor结果为0

if (b) ObjectAnimator.ofArgb(iv_src, "backgroundColor", Color.RED).setDuration(3000).start();//startValue不存在

else ObjectAnimator.ofArgb(iv_src, "backgroundColor", Color.RED, Color.GREEN).setDuration(3000).start();

break;

case 5://监听动画更新：AnimatorUpdateListener 监听动画状态：AnimatorListener

addAnimListener();

break;

case 6://组合动画：AnimatorSet.playTogether 组合动画：AnimatorSet.with/before/after

if (b) combinedAnimPlayTogether();

else combinedAnimAfterBefore();

break;

case 7://组合动画：AnimatorUpdateListener 组合动画：PropertyValuesHolder

if (b) combinedAnimUpdate();

else propertyValuesHolder();

break;

case 8://组合动画：PVHolder + KeyFrame View的animate动画，最简洁的属性动画

if (b) pVHolderKeyFrame();

else iv_src.animate().setDuration(500).y(100 * (new Random().nextInt(12)));//链式调用返回值类型为ViewPropertyAnimator

break;

case 9://View的animate动画也可以组合动画可以在animate动画前/后执行一些操作

int j = new Random().nextInt(8) + 1;

if (b) iv_src.animate().setDuration(1000).rotation(360 * j).scaleX(j * 0.5f).setInterpolator(new DecelerateInterpolator());

else iv_src.animate().alpha(0).y(1200).setDuration(500).withStartAction(new Runnable() {

@Override

public void run() {

iv_src.setX(200);

}

}).withEndAction(new Runnable() {

@Override

public void run() {

iv_src.setX(0);

iv_src.setY(0);

iv_src.setAlpha(1f);

}

}).start();

break;

case 10://最简单的ValueAnimator，控制translationY 要明白ValueAnimator只是帮你计算插值的

if (b) valueAnimator();

else valueAnimator(position);

break;

}

//监听动画绘制过程

public void addAnimListener() {

ObjectAnimator anim = ObjectAnimator.ofFloat(iv_src, "alpha", 0.1f).setDuration(1000);

anim.addUpdateListener(new AnimatorUpdateListener() {

@Override

public void onAnimationUpdate(ValueAnimator animation) {

Float value = (Float) animation.getAnimatedValue();

iv_src.setRotationX((1 - value) * 360);

Log.i("bqt", "onAnimationUpdate--" + value);

}

});

//方法一，实现AnimatorListener接口，定义自己的开始、结束、被取消、重复事件

if (b) anim.addListener(new AnimatorListener() {

@Override

public void onAnimationStart(Animator animation) {

Log.i("bqt", "【onAnimationStart】");

}

@Override

public void onAnimationRepeat(Animator animation) {

Log.i("bqt", "【onAnimationRepeat】");

}

@Override

public void onAnimationEnd(Animator animation) {

Log.i("bqt", "【onAnimationEnd】");

}

@Override

public void onAnimationCancel(Animator animation) {

Log.i("bqt", "【onAnimationCancel】");

}

});

//方法二，继承AnimatorListenerAdapter，只实现自己想实现的事件

else anim.addListener(new AnimatorListenerAdapter() {

@Override

public void onAnimationEnd(Animator animation) {

Log.i("bqt", "【继承AnimatorListenerAdapter--onAnimationEnd】");

}

});

anim.start();

}

public void combinedAnimPlayTogether() {

ObjectAnimator anim1 = ObjectAnimator.ofFloat(iv_src, "scaleX", 0.5f, 0.1f, 2f);

ObjectAnimator anim2 = ObjectAnimator.ofFloat(iv_src, "alpha", 0.5f, 1f, 0.5f);

ObjectAnimator anim3 = ObjectAnimator.ofFloat(iv_src, "rotationX", 500);

AnimatorSet animSet = new AnimatorSet().setDuration(2000);

animSet.playTogether(anim1, anim2, anim3);

animSet.start();

}

public void combinedAnimAfterBefore() {

ObjectAnimator anim1 = ObjectAnimator.ofFloat(iv_src, "scaleX", 1.0f, 2f);

ObjectAnimator anim2 = ObjectAnimator.ofFloat(iv_src, "scaleY", 0.1f, 1f);

ObjectAnimator anim3 = ObjectAnimator.ofFloat(iv_src, "x", 0, -iv_src.getWidth(), 0);

ObjectAnimator anim4 = ObjectAnimator.ofFloat(iv_src, "y", 0, iv_src.getY() + 500f, 0);

ObjectAnimator anim5 = ObjectAnimator.ofFloat(iv_src, "rotationX", 360 * 2);

AnimatorSet animSet = new AnimatorSet();

animSet.play(anim1).with(anim2);//anim1,anim2同时执行

animSet.play(anim2).with(anim3);//anim1,anim2,anim3同时执行

animSet.play(anim4).after(anim3).before(anim5);//anim4在anim1,anim2,anim3之后，在anim5之前

animSet.setDuration(1000);

animSet.start();

}

public void combinedAnimUpdate() {

ObjectAnimator anim = ObjectAnimator.ofFloat(iv_src, "包青天", 0.5f, 0.1f, 2f).setDuration(2000);

anim.addUpdateListener(new AnimatorUpdateListener() {

@Override

public void onAnimationUpdate(ValueAnimator animation) {

float cVal = (Float) animation.getAnimatedValue();

iv_src.setScaleX(cVal);

iv_src.setAlpha(cVal);

iv_src.setRotationX(cVal * 360);

}

});

anim.start();

}

public void propertyValuesHolder() {

PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat("alpha", 0.2f, 1f);

PropertyValuesHolder pvhY = PropertyValuesHolder.ofFloat("scaleX", 0.8f, 0, 2f);

PropertyValuesHolder pvhZ = PropertyValuesHolder.ofFloat("rotationY", 360 * 2f, 0);

ObjectAnimator.ofPropertyValuesHolder(iv_src, pvhX, pvhY, pvhZ).setDuration(1000).start();//三个动画是同时执行的

}

public void pVHolderKeyFrame() {

Keyframe kf0 = Keyframe.ofFloat(0f, 0f);

Keyframe kf1 = Keyframe.ofFloat(.5f, 360f);

kf1.setInterpolator(new AccelerateInterpolator());

Keyframe kf2 = Keyframe.ofFloat(1f, 0f);

PropertyValuesHolder pvhRotation = PropertyValuesHolder.ofKeyframe("rotation", kf0, kf1, kf2);

ObjectAnimator.ofPropertyValuesHolder(iv_src, pvhRotation).setDuration(1000).start();

}

public void valueAnimator() {

ValueAnimator animator = ValueAnimator.ofFloat(0, 1200, 0).setDuration(500);//这里并没有设置要操作的【对象】及【对象的属性】

animator.addUpdateListener(new AnimatorUpdateListener() {//对ValueAnimator来说，这是必要的，否则没有任何意义

@Override

public void onAnimationUpdate(ValueAnimator animation) {//在这里可以根据属性值定义自己想要的动作

Float f = (Float) animation.getAnimatedValue();//这里只能强转为of**时指定的类型，甚至不能强转为Integer类型(因为不是基本类型 int)

iv_src.setTranslationY(f);//设置要操作的对象的属性。或者你可以使用获取到的值做任何事情

}

});

animator.start();

}

public void valueAnimator(final int position) {

ValueAnimator animator = ValueAnimator.ofArgb(Color.RED).setDuration(5000);

animator.setTarget(iv_src);//设置要操作的对象，对ValueAnimator来说，这个方法是空方法，因为它不会作用在任何View上

animator.addUpdateListener(new AnimatorUpdateListener() {

@Override

public void onAnimationUpdate(ValueAnimator animation) {

Integer color = (Integer) animation.getAnimatedValue();

iv_src.setRotationY(color);

for (int j = 1; j < position; j++) {

if (j % 2 == 0) getListView().getChildAt(j).setBackgroundColor(color);

else getListView().getChildAt(j).setBackgroundColor(color | Color.GREEN);

}

});

animator.start();

}

SecondActivity 属性动画补充

包含以下演示

自定义TypeEvaluator实现抛物线动画效果
使用LayoutTransition为布局容器中子View的显示与消失设置过渡动画
使用LayoutAnimationController为布局容器中的控件播放同样的动画

public class SecondActivity extends ListActivity {

private final String[][] array = { INTERPOLATORS1, INTERPOLATORS2, INTERPOLATORS3, INTERPOLATORS4, INTERPOLATORS5, INTERPOLATORS6, };

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);//全屏

requestWindowFeature(Window.FEATURE_NO_TITLE);//取消标题栏

String[] names = { "-1-", "-2-", "-3-", "-4-", "-5-", "-6-", //

"自定义TypeEvaluator实现抛物线动画效果", //

"使用LayoutTransition为布局容器中子View的显示与消失设置过渡动画", //

"使用LayoutAnimationController为布局容器中的控件播放同样的动画", };

setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new ArrayList<String>(Arrays.asList(names))));

}

@Override

protected void onListItemClick(ListView l, View v, int position, long id) {

switch (position) {

case 6:

startActivity(new Intent(this, TypeEvaluatorActivity.class));

break;

case 7:

startActivity(new Intent(this, LayoutTransitionActivity.class));

break;

case 8:

startActivity(new Intent(this, LayoutAnimationControllerActivity.class));

break;

default:

Intent intent = new Intent(this, InterpolatorActivity.class);

intent.putExtra(InterpolatorActivity.EXTRA_NAME, array[position]);

startActivity(intent);

break;

}

public static final String[] INTERPOLATORS1 = new String[] { "EaseBackInInterpolator", "EaseBackInOutInterpolator", "EaseBackOutInterpolator",

"EaseBounceInInterpolator", "EaseBounceInOutInterpolator", "EaseBounceOutInterpolator", "EaseBreathInterpolator", "EaseCircularInInterpolator",

"EaseCircularInOutInterpolator", "EaseCircularOutInterpolator", };

public static final String[] INTERPOLATORS2 = new String[] { "EaseCubicInInterpolator", "EaseCubicInOutInterpolator", "EaseCubicOutInterpolator",

"EaseExponentialInInterpolator", "EaseExponentialInOutInterpolator", "EaseExponentialOutInterpolator", "EaseInBackInterpolator",

"EaseInBounceInterpolator", "EaseInCircInterpolator", "EaseInCubicInterpolator", };

public static final String[] INTERPOLATORS3 = new String[] { "EaseInElasticInterpolator", "EaseInExpoInterpolator", "EaseInOutBackInterpolator",

"EaseInOutBounceInterpolator", "EaseInOutCircInterpolator", "EaseInOutCubicInterpolator", "EaseInOutElasticInterpolator",

"EaseInOutExpoInterpolator", "EaseInOutQuadInterpolator", "EaseInOutQuartInterpolator", };

public static final String[] INTERPOLATORS4 = new String[] { "EaseInOutQuintInterpolator", "EaseInOutSineInterpolator", "EaseInQuadInterpolator",

"EaseInQuartInterpolator", "EaseInQuintInterpolator", "EaseInSineInterpolator", "EaseOutBackInterpolator", "EaseOutBounceInterpolator",

"EaseOutCircInterpolator", "EaseOutCubicInterpolator", };

public static final String[] INTERPOLATORS5 = new String[] { "EaseOutElasticInterpolator", "EaseOutExpoInterpolator", "EaseOutQuadInterpolator",

"EaseOutQuartInterpolator", "EaseOutQuintInterpolator", "EaseOutSineInterpolator", "EaseQuadInInterpolator", "EaseQuadInOutInterpolator",

"EaseQuadOutInterpolator", "EaseQuartInInterpolator", };

public static final String[] INTERPOLATORS6 = new String[] { "EaseQuartInOutInterpolator", "EaseQuartOutInterpolator", "EaseQuintInInterpolator",

"EaseQuintInOutInterpolator", "EaseQuintOutInterpolator", };

}

自定义TypeEvaluator 实现抛物线效果

public class TypeEvaluatorActivity extends Activity {

private ImageView iv_src;

private boolean b = true;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);//全屏

requestWindowFeature(Window.FEATURE_NO_TITLE);//取消标题栏

Bitmap bitmap = Bitmap.createBitmap(20, 20, Bitmap.Config.ARGB_8888);

Canvas canvas = new Canvas(bitmap);

Paint paint = new Paint();

paint.setColor(Color.RED);

paint.setAntiAlias(true);

paint.setDither(true);

canvas.drawCircle(10, 10, 10, paint);

iv_src = new ImageView(this);

iv_src.setImageBitmap(bitmap);

setContentView(iv_src, new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

}

@Override

public boolean onTouchEvent(MotionEvent event) {

if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {

b = !b;

Point point = new Point();

((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getSize(point);

ValueAnimator animator = new ValueAnimator().setDuration(1000);

//通过new创建的ValueAnimator要明确的setObjectValues和setEvaluator，并且一定要先setObjectValues，再setEvaluator

if (b) animator.setObjectValues(new PointF(0, 0), new PointF(point.x - iv_src.getWidth(), point.y - iv_src.getHeight()));

else animator.setObjectValues(new PointF(0, point.y - iv_src.getHeight()), new PointF(point.x - iv_src.getWidth(), 0));

animator.setEvaluator(new PointFEvaluator());//PointFEvaluator为自定义的估值器，其实就是用来封装你需要的数据用的

animator.addUpdateListener(new AnimatorUpdateListener() {

@Override

public void onAnimationUpdate(ValueAnimator animation) {

PointF point = (PointF) animation.getAnimatedValue();

iv_src.setX(point.x);

iv_src.setY(point.y);

}

});

animator.start();

}

return super.onTouchEvent(event);

}

自定义的PointFEvaluator

public class PointFEvaluator implements TypeEvaluator<PointF> {

@Override

public PointF evaluate(float fraction, PointF startValue, PointF endValue) {

//只要能保证：当fraction=0时返回值为startValue，并且当fraction=1时返回值为endValue，就是一个比较合理的函数

PointF pointF = new PointF();

pointF.x = startValue.x + fraction * (endValue.x - startValue.x);// x方向匀速移动

pointF.y = startValue.y + fraction * fraction * (endValue.y - startValue.y);// y方向抛物线加速移动

return pointF;

}

LayoutTransition 属性动画_布局动画

public class LayoutTransitionActivity extends Activity implements OnCheckedChangeListener, OnClickListener {

private GridLayout gl_container;//父布局

//布局动画，当容器中的视图发生变化时存在过渡的动画效果。默认为全部开启状态，使用的是默认的动画效果，但是这些都是可以更改的

private LayoutTransition mTransition = new LayoutTransition();

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.layout);

gl_container = (GridLayout) findViewById(R.id.gl_container);

findViewById(R.id.btn).setOnClickListener(this);

((CheckBox) findViewById(R.id.appear)).setOnCheckedChangeListener(this);

((CheckBox) findViewById(R.id.change_appear)).setOnCheckedChangeListener(this);

((CheckBox) findViewById(R.id.disappear)).setOnCheckedChangeListener(this);

((CheckBox) findViewById(R.id.change_disappear)).setOnCheckedChangeListener(this);

((CheckBox) findViewById(R.id.layout_attr)).setOnCheckedChangeListener(this);

gl_container.setLayoutTransition(mTransition);

}

@Override

public void onCheckedChanged(CompoundButton view, boolean isChecked) {

if (view.getId() == R.id.layout_attr) {//等价于xml中【animateLayoutChanges】属性为false(默认)还是true

gl_container.setLayoutTransition(isChecked ? new LayoutTransition() : null);

return;

} else {

mTransition = new LayoutTransition();

switch (view.getId()) {

case R.id.appear://当一个View在ViewGroup中【出现】时，对【此View】设置的动画

mTransition.setAnimator(LayoutTransition.APPEARING, isChecked ? mTransition.getAnimator(LayoutTransition.APPEARING) : null);

break;

case R.id.change_appear://当一个View在ViewGroup中【出现】时，对此View对其他View位置造成影响，对【其他View】设置的动画

mTransition.setAnimator(LayoutTransition.CHANGE_APPEARING, isChecked ? mTransition.getAnimator(LayoutTransition.CHANGE_APPEARING) : null);

break;

case R.id.disappear://当一个View在ViewGroup中【消失】时，对【此View】设置的动画

mTransition.setAnimator(LayoutTransition.DISAPPEARING, isChecked ? mTransition.getAnimator(LayoutTransition.DISAPPEARING) : null);

break;

case R.id.change_disappear:////当一个View在ViewGroup中【消失】时，对此View对其他View位置造成影响，对【其他View】设置的动画

mTransition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, isChecked ? mTransition.getAnimator(LayoutTransition.CHANGE_DISAPPEARING) : null);

break;

}

gl_container.setLayoutTransition(mTransition);

}

@Override

public void onClick(View view) {

final Button button = new Button(this);

button.setText(gl_container.getChildCount() + 1 + "");

gl_container.addView(button, gl_container.getChildCount());//放置在最后那个位置

button.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

gl_container.removeView(button);

}

});

}

LayoutAnimationController 布局动画

public class LayoutAnimationControllerActivity extends ListActivity {

String[] array = { "添加HeaderView", "移除HeaderView", "添加移除View时没任何卵用",//

"delay位间隔时间，单位为秒", "animation为设置动画的文件", "animationOrder为进入方式" };

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new ArrayList<String>(Arrays.asList(array))));

Animation animation = AnimationUtils.loadAnimation(this, android.R.anim.slide_in_left);//先加载【补间动画】

LayoutAnimationController lac = new LayoutAnimationController(animation);//再设置布局动画

lac.setOrder(LayoutAnimationController.ORDER_NORMAL);//设置控件显示的顺序；normal=0 默认，reverse=1 倒序，random=2 随机

lac.setDelay(0.6f);//设置控件显示间隔时间，注意单位是秒；可以为70%，也可以是一个浮点数

getListView().setLayoutAnimation(lac);//在XML中设置时是使用 android:layoutAnimation="@anim/layout_anim"

}

@Override

protected void onListItemClick(ListView l, View v, int position, long id) {

switch (position - getListView().getHeaderViewsCount()) {

case 0:

ImageView iv = new ImageView(this);

iv.setImageResource(R.drawable.ic_launcher);

getListView().addHeaderView(iv);

break;

case 1:

if (getListView().getHeaderViewsCount() > 0) getListView().removeHeaderView(getListView().getChildAt(0));

break;

}

自定义Interpolator 实现各种加速效果

public class InterpolatorActivity extends ListActivity {

private ImageView iv_src;

private ObjectAnimator mAnimator;

private static final String IN_PG_NAME = "com.bqt.anim.interpolator.";

public static final String EXTRA_NAME = "interpolators";

private String[] mInterpolators;

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);//全屏

requestWindowFeature(Window.FEATURE_NO_TITLE);//取消标题栏

mInterpolators = getIntent().getStringArrayExtra(EXTRA_NAME);

setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new ArrayList<String>(Arrays.asList(mInterpolators))));

iv_src = new ImageView(this);

iv_src.setBackgroundColor(0x330000ff);

iv_src.setImageResource(R.drawable.icon);

getListView().addHeaderView(iv_src);

DisplayMetrics metric = new DisplayMetrics();

((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getMetrics(metric);

mAnimator = ObjectAnimator.ofFloat(iv_src, "y", 0, metric.heightPixels, 0).setDuration(1500);

}

@Override

protected void onListItemClick(ListView l, View v, int position, long id) {

if (position == 0) {

Intent intent = new Intent(this, InterpolatorActivity.class);

intent.putExtra(InterpolatorActivity.EXTRA_NAME, mInterpolators);

startActivity(intent);

finish();

} else selectDrawerItem(position-1);

}

private void selectDrawerItem(int position) {

String name = mInterpolators[position];

TimeInterpolator interpolator = null;

try {

Class<?> clazz = Class.forName(IN_PG_NAME + name);

interpolator = (TimeInterpolator) clazz.newInstance();

} catch (ClassNotFoundException e) {

e.printStackTrace();

} catch (InstantiationException e) {

e.printStackTrace();

} catch (IllegalAccessException e) {

e.printStackTrace();

}

if (interpolator != null) {

mAnimator.cancel();

mAnimator.setInterpolator(interpolator);

mAnimator.start();

}

【属性动画示例】Property Animation

MainActivity 属性动画常用操作

SecondActivity 属性动画补充

自定义TypeEvaluator 实现抛物线效果

自定义的PointFEvaluator

LayoutTransition 属性动画_布局动画

LayoutAnimationController 布局动画

自定义Interpolator 实现各种加速效果

附件列表