动画

//旋转掉落动画

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.a123.liangqiqi1221yk.DonghuaActivity">
    <ImageView
        android:id="@+id/img"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true" />
</RelativeLayout>

package com.example.a123.liangqiqi1221yk;

import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.widget.ImageView;

public class DonghuaActivity extends AppCompatActivity {
    private ImageView img;
    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if(msg.what == 1){
                Intent intent = new Intent(DonghuaActivity.this,MainActivity.class);
                startActivity(intent);
                finish();
            }

        }
    };


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_donghua);
        img = (ImageView) findViewById(R.id.img);


        ObjectAnimator animator1 = ObjectAnimator.ofFloat(
                img,
                "translationY",
                0, 400
        );
        ObjectAnimator animator2 = ObjectAnimator.ofFloat(
                img,
                "alpha",
                0, 1
        );
        ObjectAnimator animator3 = ObjectAnimator.ofFloat(
                img,
                "scaleY",
                1, 2
        );
        ObjectAnimator animator4 = ObjectAnimator.ofFloat(
                img,
                "rotationY",
                0, 360
        );

        AnimatorSet animatorSet = new AnimatorSet();
        animatorSet.setDuration(3000);
        animatorSet.play(animator1)
                .with(animator2)
                .with(animator3)
                .with(animator4);
        animatorSet.start();


        new Thread(){
            @Override
            public void run() {
                super.run();
                Message msg = new Message();
                msg.what = 1;
                handler.sendMessageDelayed(msg,3000);
            }
        }.start();

    }



}

//旋转消失

package com.example.a123.liangqiqi1221yk;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;

public class DonghuaActivity extends AppCompatActivity {
    private ImageView img;
    private AnimationSet animationSet;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_donghua);
        img = (ImageView) findViewById(R.id.img);
        initAnimates();//初始化动画
        /**
         * 动画的监听事件
         */
        animationSet.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                /**
                 * 结束监听的事件
                 */
                Intent intent = new Intent(DonghuaActivity.this, MainActivity.class);
                startActivity(intent);
                finish();
            }

            @Override
            public void onAnimationRepeat(Animation animation) {
            }
        });
    }

    //初始化动画
    private void initAnimates() {
        //创建属性动画对象
        animationSet = new AnimationSet(true);
        /** 参数1：从哪个旋转角度开始
         * 参数2：转到什么角度
         * 后4个参数用于设置围绕着旋转的圆的圆心在哪里
         * 参数3：确定x轴坐标的类型，有ABSOLUT绝对坐标、RELATIVE_TO_SELF相对于自身坐标、RELATIVE_TO_PARENT相对于父控件的坐标
         * 参数4：x轴的值，0.5f表明是以自身这个控件的一半长度为x轴
         * 参数5：确定y轴坐标的类型
         * 参数6：y轴的值，0.5f表明是以自身这个控件的一半长度为x轴
         */
        RotateAnimation rotateAnimation = new RotateAnimation(0, 360,
                Animation.RELATIVE_TO_SELF, 0.5f,
                Animation.RELATIVE_TO_SELF, 0.5f);
        rotateAnimation.setDuration(3000);
//        rotateAnimation.setFillAfter(true);
        animationSet.addAnimation(rotateAnimation);
        /**
         * 移动
         * 参数1～2：x轴的开始位置
         * 参数3～4：y轴的开始位置
         * 参数5～6：x轴的结束位置
         * 参数7～8：x轴的结束位置
         */
        TranslateAnimation translateAnimation =
                new TranslateAnimation(
                        Animation.RELATIVE_TO_SELF, 0f,
                        Animation.RELATIVE_TO_SELF, 0f,
                        Animation.RELATIVE_TO_SELF, 0f,
                        Animation.RELATIVE_TO_SELF, 3f);
        translateAnimation.setDuration(3000);
//        translateAnimation.setFillAfter(true);
        animationSet.addAnimation(translateAnimation);

        //创建一个AnimationSet对象，参数为Boolean型，
        //true表示使用Animation的interpolator，false则是使用自己的
        //创建一个AlphaAnimation对象，参数从完全的透明度，到完全的不透明
        AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0);
        //设置动画执行的时间
        alphaAnimation.setDuration(3000);
//        alphaAnimation.setFillAfter(true);
        animationSet.addAnimation(alphaAnimation);

        //参数1：x轴的初始值
        //参数2：x轴收缩后的值
        //参数3：y轴的初始值
        //参数4：y轴收缩后的值
        //参数5：确定x轴坐标的类型
        //参数6：x轴的值，0.5f表明是以自身这个控件的一半长度为x轴
        //参数7：确定y轴坐标的类型
        //参数8：y轴的值，0.5f表明是以自身这个控件的一半长度为x轴
        ScaleAnimation scaleAnimation = new ScaleAnimation(
                2, 1f, 2, 1f,
                Animation.RELATIVE_TO_SELF, 0.5f,
                Animation.RELATIVE_TO_SELF, 0.5f);
        scaleAnimation.setDuration(3000);
//        scaleAnimation.setFillAfter(true);
        animationSet.addAnimation(scaleAnimation);
        //使动画静止
        animationSet.setFillAfter(true);
        img.startAnimation(animationSet);
    }

}