FirebaseAuth不在SplashScreenActivity中运行

Question

我正在尝试创建一个初始屏幕，以检查用户是否已经注册，然后启动适当的活动，但该应用程序卡在初始屏幕上而没有任何错误。

public class SplashScreenActivity extends AppCompatActivity {

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    FirebaseAuth mAuth = FirebaseAuth.getInstance();

    int SPLASH_TIME_OUT = 1000;
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {

            FirebaseAuth.AuthStateListener mAuthStateListener = new FirebaseAuth.AuthStateListener() {
                @Override
                public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                    FirebaseUser user = firebaseAuth.getCurrentUser();
                    if (user == null) {
                        startWelcomeActivity();
                        SplashScreenActivity.this.finish();
                    } else {
                        startMainActivity();
                        SplashScreenActivity.this.finish();
                    }
                }
            };
        }
    }, SPLASH_TIME_OUT);
}

private void startMainActivity() {

    Intent intent = new Intent(SplashScreenActivity.this, MainActivity.class);
    startActivity(intent);
}

private void startWelcomeActivity() {

    Intent intent = new Intent(SplashScreenActivity.this, WelcomeActivity.class);
    startActivity(intent);
}
}