Android アプリ アニメーション ローテーション

Reference: Android Developers

@animator/path_morph.xml

    <set xmlns:android="http://schemas.android.com/apk/res/android">
        <objectAnimator
            android:duration="3000"
            android:propertyName="pathData"
            android:valueFrom="M300,70 l 0,-70 70,70 0,0   -70,70z"
            android:valueTo="M300,70 l 0,-70 70,0  0,140 -70,0 z"
            android:valueType="pathType" />
    </set>

@animator/rotation.xml

<set　xmlns:android="http://schemas.android.com/apk/res/android">
    <objectAnimator
        android:duration="6000"
        android:propertyName="rotation"
        android:valueFrom="0"
        android:valueTo="360" />
</set>

@drawable/animated_vector_drawable.xml

<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/vector_drawable" >
    <target
        android:name="rotationGroup"
        android:animation="@animator/rotation" />
    <target
        android:name="v"
        android:animation="@animator/path_morph" />
</animated-vector>

@drawable/vector_drawable.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:height="64dp"
    android:width="64dp"
    android:viewportHeight="600"
    android:viewportWidth="600">
    <group
        android:name="rotationGroup"
        android:pivotX="300.0"
        android:pivotY="300.0"
        android:rotation="45.0" >
        <path
            android:name="v"
            android:fillColor="#000000"
            android:pathData="M300,70 l 0,-70 70,70 0,0 -70,70z" />
    </group>
</vector>

MainActivity

import androidx.appcompat.app.AppCompatActivity;
import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat;

import android.graphics.drawable.AnimatedVectorDrawable;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.widget.ImageView;

import com.google.android.material.animation.AnimationUtils;

public class MainActivity extends AppCompatActivity {
AnimationDrawable arrowAnimation;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        //using drawable vector and rotating with xml files
        AnimatedVectorDrawableCompat avdCompat = AnimatedVectorDrawableCompat.create(this, R.drawable.animated_vector_drawable);
        imageView.setImageDrawable(avdCompat);
        if (avdCompat != null) {
            avdCompat.start();
        }
    }
}