使用共享元素动画在活动之间切换时闪烁（闪烁）屏幕

Question

我正在开发一个 Android 应用程序，并在启动屏幕活动和我的登录活动之间使用共享元素转换。当过渡发生时，我可以看到我的手机、应用程序和所有东西的背景，我可以从我的应用程序中看到的唯一东西是徽标动画，其他所有东西都消失了。

这是我的代码：

启动画面（起源）

<LinearLayout
        android:id="@+id/meofat_logo"
        android:layout_width="86dp"
        android:layout_height="86dp"
        android:layout_gravity="center"
        android:background="@drawable/meofat_logo"
        android:orientation="vertical"
        android:layout_marginTop="210dp"
        android:elevation="24dp"
        android:transitionName="logo"/>
    <LinearLayout
        android:id="@+id/meofat_tipo"
        android:layout_width="160dp"
        android:layout_height="50dp"
        android:background="@drawable/meofat_tipo"
        android:layout_gravity="center"
        android:elevation="24dp"
        android:transitionName="tipo"/>

登录屏幕（目的地）

<LinearLayout
            android:id="@+id/meofat_logo"
            android:layout_width="58dp"
            android:layout_height="58dp"
            android:layout_gravity="center"
            android:background="@drawable/meofat_logo"
            android:orientation="vertical"
            android:layout_marginTop="80dp"
            android:elevation="24dp"
            android:transitionName="logo"/>

        <LinearLayout
            android:id="@+id/meofat_tipo"
            android:layout_width="106dp"
            android:layout_height="33dp"
            android:background="@drawable/meofat_tipo"
            android:layout_gravity="center"
            android:elevation="24dp"
            android:transitionName="tipo"/>

闪屏代码：

public class RedirectActivity extends Activity {
    private static int SPLASH_TIME_OUT = 2000;
    LinearLayout logo,tipo;
    Animation upToDown;
    Animation downToUp;

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

        requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.activity_redirect);

        logo = (LinearLayout) findViewById(R.id.meofat_logo);
        tipo = (LinearLayout) findViewById(R.id.meofat_tipo);
        upToDown = AnimationUtils.loadAnimation(this,R.anim.uptodown);
        logo.setAnimation(upToDown);
        downToUp = AnimationUtils.loadAnimation(this,R.anim.downtoup);
        tipo.setAnimation(downToUp);




        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                MEOFatSession session = new MEOFatSession(RedirectActivity.this);

                if (session.isLoggedIn()){
                    Intent goToMeasurement = new Intent(RedirectActivity.this,
                            MeasurementActivity.class);
                    RetrofitInitializer.getInstance().addCredentials(session.getCredentials());
                    startActivity(goToMeasurement);
                    finish();
                } else {
                    Intent goToLogin = new Intent(RedirectActivity.this,
                            LoginActivity.class);
                    ActivityOptionsCompat optionsCompat = ActivityOptionsCompat.
                            makeSceneTransitionAnimation(RedirectActivity.this,findViewById(R.id.meofat_logo),
                                    "logo");
                    startActivity(goToLogin,  optionsCompat.toBundle());
                    finish();
                }

            }
        },SPLASH_TIME_OUT);


    }
}

一个试图说明问题的 gif。

https://giphy.com/gifs/d1G6hKgTAsX5hOo0

Answer 1

删除 finish() 方法解决了这个问题。显然它会在动画期间破坏活动，导致它消失。

Answer 2

就像@GaboSampaio 说的，finish() 导致了闪烁。你可以推迟它：

Handler handler = new Handler();
handler.postDelayed(this::finish, 1000);

Answer 3

Intent goToLogin = new Intent(RedirectActivity.this, LoginActivity.class);

ActivityOptionsCompat activityOptions = ActivityOptionsCompat.makeSceneTransitionAnimation(
    RedirectActivity.this,

    // Now we provide a list of Pair items which contain the view we can transitioning
    // from, and the name of the view it is transitioning to, in the launched activity
    new Pair<View, String>(findViewById(R.id.logo_splash),
    "tipo"));

ActivityCompat.startActivity(RedirectActivity.this, intent, activityOptions.toBundle());