Wie zu beheben "Kann Symbolfehler nicht auflösen"?

Question

package project.judil.com.demo; 

import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 

import com.airbnb.lottie.LottieAnimationView; 

public class MainActivity extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
    } 
    LottieAnimationView animationView = (LottieAnimationView) findViewById(R.id.animation_view); 
    animationView.setAnimation("muzli.json"); 
    animationView.loop(true); 
    animationView.playAnimation(); 
} 

Answer 1

bewegen, die ganze animationView innerhalb onCreate() nach setContentView()