Android 属性动画

不多说直接上代码

main类

import android.animation.AnimatorSet;import android.animation.ObjectAnimator;import android.animation.PropertyValuesHolder;import android.animation.TypeEvaluator;import android.animation.ValueAnimator;import android.graphics.Color;import android.graphics.PointF;import android.os.Build;import android.os.Bundle;import android.support.annotation.RequiresApi;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.view.animation.LinearInterpolator;import android.widget.Button;import android.widget.ImageView;public class MainActivity extends AppCompatActivity implements View.OnClickListener {    private ImageView mImage;    private Button mButAlpha;    private Button mButScale;    private Button mButTranslatatin;    private Button mBuRotation;    private Button mButSR;    private Button mButRT;    private Button mButAlphaRepeat;    private Button mBuBGcolor;    private Button mButPaoWuxian;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();    }    private void initView() {        mImage = (ImageView) findViewById(R.id.image);        mButAlpha = (Button) findViewById(R.id.butAlpha);        mButAlpha.setOnClickListener(this);        mButScale = (Button) findViewById(R.id.butScale);        mButScale.setOnClickListener(this);        mButTranslatatin = (Button) findViewById(R.id.butTranslatatin);        mButTranslatatin.setOnClickListener(this);        mBuRotation = (Button) findViewById(R.id.buRotation);        mBuRotation.setOnClickListener(this);        mButSR = (Button) findViewById(R.id.butSR);        mButSR.setOnClickListener(this);        mButRT = (Button) findViewById(R.id.butRT);        mButRT.setOnClickListener(this);        mButAlphaRepeat = (Button) findViewById(R.id.butAlphaRepeat);        mButAlphaRepeat.setOnClickListener(this);        mBuBGcolor = (Button) findViewById(R.id.buBGcolor);        mBuBGcolor.setOnClickListener(this);        mButPaoWuxian = (Button) findViewById(R.id.butPaoWuxian);        mButPaoWuxian.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.butAlpha://透明                ObjectAnimator                        .ofFloat(mImage, "alpha", 0.0f, 1.0f)                        .setDuration(1000)                        .start();                break;            case R.id.butScale://缩放   同时播放俩种 XY并存的都可以这样写                ObjectAnimator                        .ofFloat(mImage, "scaleX", 0.0f, 1.0f)                        .setDuration(1000)                        .start();                break;            case R.id.butTranslatatin://位移                PropertyValuesHolder translationX = PropertyValuesHolder.ofFloat("translationX", 20f, 80f);                PropertyValuesHolder translationY = PropertyValuesHolder.ofFloat("translationY", 20f, 80f);                ObjectAnimator                        .ofPropertyValuesHolder(mImage, translationX, translationY)                        .setDuration(1000)                        .start();                break;            case R.id.buRotation://旋转                ObjectAnimator                        .ofFloat(mImage,"rotationY",0.0f,360f)                        .setDuration(1000)                        .start();                break;            case R.id.butSR://先播放缩放动画，完成后播放旋转动画                AnimatorSet animatorSetGroup1 = new AnimatorSet();                ObjectAnimator objectAnimatorScaleX1 = ObjectAnimator.ofFloat(mImage, "scaleX", 0f, 1f);                ObjectAnimator objectAnimatorScaleY1 = ObjectAnimator.ofFloat(mImage, "scaleY", 0f, 1f);                ObjectAnimator objectAnimatorRotateX1 = ObjectAnimator.ofFloat(mImage, "rotationX", 0f, 360f);                ObjectAnimator objectAnimatorRotateY1 = ObjectAnimator.ofFloat(mImage, "rotationY", 0f, 360f);                animatorSetGroup1.setDuration(1000);                animatorSetGroup1.play(objectAnimatorScaleX1).with(objectAnimatorScaleY1)                        .before(objectAnimatorRotateX1).before(objectAnimatorRotateY1);                animatorSetGroup1.start();                break;            case R.id.butRT://先播放旋转动画，完成后播放位移动画                AnimatorSet animatorSetGroup2 = new AnimatorSet();                ObjectAnimator objectAnimatorTranslate2 = ObjectAnimator.ofFloat(mImage, "translationX", 0f, 500f);                ObjectAnimator objectAnimatorRotateX2 = ObjectAnimator.ofFloat(mImage, "rotationX", 0f, 360f);                ObjectAnimator objectAnimatorRotateY2 = ObjectAnimator.ofFloat(mImage, "rotationY", 0f, 360f);                animatorSetGroup2.setDuration(1000);                animatorSetGroup2.play(objectAnimatorTranslate2).after(objectAnimatorRotateX2)                        .after(objectAnimatorRotateY2);                animatorSetGroup2.start();                break;            case R.id.butAlphaRepeat://重复的透明度动画  闪烁效果                //TODO                ObjectAnimator objectAnimator2 = ObjectAnimator.ofFloat(mImage, "alpha", 0f, 1f);                objectAnimator2.setDuration(500);                objectAnimator2.setRepeatCount(3);                objectAnimator2.start();                break;            case R.id.buBGcolor://背景颜色不断改变                //TODO                ObjectAnimator objectAnimatorBg = ObjectAnimator.ofInt(mImage, "backgroundColor", Color.BLUE, Color.YELLOW, Color.RED);                objectAnimatorBg.setDuration(3000);                objectAnimatorBg.start();                break;            case R.id.butPaoWuxian://背景颜色不断改变                //TODO                parabola();                break;            default:                break;        }    }    /**     * 抛物线动画     */    @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)    public void parabola()    {        ValueAnimator valueAnimator = new ValueAnimator();        valueAnimator.setDuration(3000);        valueAnimator.setObjectValues(new PointF(0, 0));        valueAnimator.setInterpolator(new LinearInterpolator());        valueAnimator.setEvaluator(new TypeEvaluator<PointF>()        {            @Override            public PointF evaluate(float fraction, PointF startValue,                                   PointF endValue)            {                /**x方向200px/s ，则y方向0.5 * 200 * t**/                PointF point = new PointF();                point.x = 200 * fraction * 3;                point.y = 0.5f * 200 * (fraction * 3) * (fraction * 3);                return point;            }        });        valueAnimator.start();        valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener()        {            @Override            public void onAnimationUpdate(ValueAnimator animation)            {                PointF point = (PointF) animation.getAnimatedValue();                mImage.setX(point.x);                mImage.setY(point.y);            }        });    }}

布局

<LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.example.q.MainActivity">    <LinearLayout        android:orientation="horizontal"        android:layout_width="wrap_content"        android:layout_height="wrap_content">        <Button            android:layout_weight="1"            android:id="@+id/butAlpha"            android:text="透明"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>        <Button            android:layout_weight="1"            android:id="@+id/butScale"            android:text="缩放"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>        <Button            android:layout_weight="1"            android:id="@+id/butTranslatatin"            android:text="位移"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>        <Button            android:layout_weight="1"            android:id="@+id/buRotation"            android:text="旋转"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>    </LinearLayout>    <LinearLayout        android:orientation="horizontal"        android:layout_width="wrap_content"        android:layout_height="wrap_content">        <Button            android:layout_weight="1"            android:id="@+id/butSR"            android:text="先缩放后旋转"            android:textSize="14sp"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>        <Button            android:layout_weight="1"            android:textSize="14sp"            android:id="@+id/butRT"            android:text="先旋转后位移"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>        <Button            android:layout_weight="1"            android:id="@+id/butAlphaRepeat"            android:text="透明重放:闪烁"            android:textSize="14sp"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>        <Button            android:layout_weight="1"            android:textSize="14sp"            android:id="@+id/buBGcolor"            android:text="背景色改变"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>    </LinearLayout>    <Button        android:id="@+id/butPaoWuxian"        android:text="抛物线动画"        android:textSize="14sp"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>    <ImageView        android:layout_marginTop="200dp"        android:layout_gravity="center"        android:id="@+id/image"        android:src="@drawable/aaa"        android:layout_width="200dp"        android:layout_height="250dp"/></LinearLayout>