开始上手
废话不多说，直接上代码块
1、res/drawable/splash_logo.xml，静态SVG图片
核心代码就是这个pathData，此代码参考https://github.com/18601949127/DiDiCallCar，滴滴出行logo动画
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="72dp"
android:height="50dp"
android:viewportWidth="72.0"
android:viewportHeight="50.0">
<path
android:name="animate_logo_target"
android:pathData="M60,5,L10,5,V15,A1,1,0,0,0,65,20,L65,10"
android:strokeWidth="10"
android:strokeColor="@color/colorAccent" />
</vector>
2、res/animator/logo_animator.xml，动画效果
<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="3000"
android:propertyName="trimPathEnd"
android:repeatCount="0"
android:valueFrom="0"
android:valueTo="1"
android:valueType="floatType"
/>
3、res/drawable/logo_anim.xml，把上面两个结合起来
<?xml version="1.0" encoding="utf-8"?>
<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/splash_logo">
<target
android:name="animate_logo_target"
android:animation="@animator/logo_animator"/>
</animated-vector>
4、res/layout/activity_main.xml
<ImageView
android:id="@+id/image_logo"
android:layout_width="72dp"
android:layout_height="72dp"
android:layout_gravity="center"
android:focusable="true" />
5、MainActivity.java，这里可以用handler.postDelay一个runnable配合动画的播放，来达到实现欢迎动画的效果
ImageView logo = findViewById(R.id.image_logo);
AnimatedVectorDrawableCompat animatedVectorDrawableCompat = AnimatedVectorDrawableCompat.create(
this, R.drawable.logo_anim
);
logo.setImageDrawable(animatedVectorDrawableCompat);
((Animatable) logo.getDrawable()).start();
或者
AnimatedVectorDrawable anim =
(AnimatedVectorDrawable) getResources().getDrawable(R.drawable.logo_anim);
ImageView logo = findViewById(R.id.image_logo);
logo.setImageDrawable(anim);
anim.start();