我正在开发一个 android 应用程序,并在初始屏幕活动和我的登录活动之间使用共享元素过渡。 当过渡发生时,我可以看到我的手机,应用程序和Everthing的背景,我从应用程序中唯一可以看到的是徽标动画,其他所有内容都消失了。
这是我的代码:
初始屏幕(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"/>
启动画面代码:
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);
}
}
试图说明问题的 gif。
https://giphy.com/gifs/d1G6hKgTAsX5hOo0
删除 finish(( 方法解决了这个问题。显然,它会破坏动画期间的活动,使其消失。
就像@GaboSampaio说的,finish()
导致了闪烁。你可以延迟它:
Handler handler = new Handler();
handler.postDelayed(this::finish, 1000);
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());