属性动画

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SplashActivity

package ncp.bwie.com.gwc;import android.animation.Animator;import android.animation.AnimatorSet;import android.animation.ObjectAnimator;import android.annotation.SuppressLint;import android.content.Intent;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.ImageView;public class SplashActivity extends AppCompatActivity {    private ImageView img;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_splash);        img = (ImageView) findViewById(R.id.Splash_img);        //设置动画        ObjectAnimator translationY = ObjectAnimator.ofFloat(img, "translationY", 0f, 300f);        ObjectAnimator alpha = ObjectAnimator.ofFloat(img, "alpha", 0f, 1f);        ObjectAnimator rotation = ObjectAnimator.ofFloat(img, "rotation", 0f, 360f);        ObjectAnimator scaleY = ObjectAnimator.ofFloat(img, "scaleY", 2f, 1f);        ObjectAnimator scaleX = ObjectAnimator.ofFloat(img, "scaleX", 2f, 1f);        //组合动画        AnimatorSet animatorSet = new AnimatorSet();        animatorSet.play(translationY).with(alpha).with(rotation).with(scaleY).with(scaleX);        animatorSet.setDuration(3000);        animatorSet.start();        //动画监听        animatorSet.addListener(new Animator.AnimatorListener() {            @Override            public void onAnimationStart(Animator animator) {            }            @Override            public void onAnimationEnd(Animator animator) {                //结束后跳转                Intent intent = new Intent(SplashActivity.this, DetailsActivity.class);                startActivity(intent);                finish();            }            @Override            public void onAnimationCancel(Animator animator) {            }            @Override            public void onAnimationRepeat(Animator animator) {            }        });    }}

布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout 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"    android:orientation="vertical"    >    <ImageView        android:id="@+id/Splash_img"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:src="@mipmap/ic_launcher" /></LinearLayout>

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