如何开始2个活动之间的共享元素转换？

Question

我刚刚了解了Android中的共享元素，我有一幅图像，其中一张在ActivitySplashScreen中，另一幅在Toolbar中，我想使用共享元素从{{ 1}}至ActivitySplashScreen

经过一番搜索并尝试实现使该功能不适用于我的代码的简单方法，例如：

style.xml：

ActivityMain

ActivitySplashScreen.java：

<style name="AppTheme" parent="BaseTheme">
    <item name="android:windowContentTransitions">true</item>
</style>

<style name="BaseTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    ...
</style>

ActivityMain.java：

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_splash_screen);

    ButterKnife.bind(this);

    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            Intent intent = new Intent(ActivitySplashScreen.this, MainActivity.class);
            ActivityOptionsCompat options = ActivityOptionsCompat.
                    makeSceneTransitionAnimation(ActivitySplashScreen.this,
                            app_logo,
                            ViewCompat.getTransitionName(app_logo));
            startActivity(intent, options.toBundle());

            finish();
        }
    }, 3000);
}

我的@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); supportPostponeEnterTransition(); } 和ImageView xml布局上的

和ActivitySplashScreen小部件：

ActivityMain

此代码无法正常运行，我不确定那到底是什么问题

已更新

<ImageView android:id="@+id/instagram_add_story" android:layout_width="40dp" android:layout_height="40dp" android:layout_marginTop="8dp" android:layout_marginEnd="16dp" android:layout_marginBottom="8dp" android:src="@drawable/img_wizard_1" android:transitionName="app_logo" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent" tools:ignore="VectorDrawableCompat" /> xml：

ActivitySplashScreen

<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:id="@+id/alachiq_header_animation" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="center" android:background="@drawable/instagram_animation_gradient_list" android:gravity="center" android:orientation="vertical" android:paddingTop="40dp"> <ImageView android:id="@+id/app_logo" android:layout_width="150dp" android:layout_height="150dp" android:transitionName="app_logo" android:tint="@android:color/white" app:srcCompat="@drawable/img_wizard_1" /> <TextView android:id="@+id/title" style="@style/TextAppearance.AppCompat.Title" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginBottom="8dp" android:fontFamily="@font/iran_sans_bold" android:gravity="center" android:text="@string/app_name" android:textColor="@color/mdtp_white" /> <TextView style="@style/TextAppearance.AppCompat.Caption" android:layout_width="match_parent" android:layout_height="wrap_content" android:fontFamily="@font/iran_sans_light" android:gravity="center" android:textColor="@color/mdtp_white" /> </LinearLayout> </android.support.constraint.ConstraintLayout> xml：

MainActivity

Answer 1

我可以以此方式使用，这是根据您的情况提供的解决方案。

样式：

login.html

Splash.XML

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

</resources>

Splash.Java

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:id="@+id/alachiq_header_animation"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:background="@drawable/ic_launcher_background"
        android:gravity="center"
        android:orientation="vertical"
        android:paddingTop="40dp">

        <ImageView
            android:id="@+id/app_logo"
            android:layout_width="150dp"
            android:layout_height="150dp"
            android:tint="@android:color/black"
            app:srcCompat="@android:drawable/ic_dialog_email" />

        <TextView
            android:id="@+id/title"
            style="@style/TextAppearance.AppCompat.Title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:fontFamily="sans-serif"
            android:gravity="center"
            android:text="@string/app_name"
            android:textColor="@android:color/background_dark" />

        <TextView
            style="@style/TextAppearance.AppCompat.Caption"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:fontFamily="sans-serif"
            android:textColor="@android:color/background_dark" />
    </LinearLayout>
</android.support.constraint.ConstraintLayout>

MainActivity.XML

public class SplashActivity extends AppCompatActivity {
    @BindView(R.id.app_logo)
    ImageView app_logo;
    Activity mActivity;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);
        ButterKnife.bind(this);
        mActivity = this;
        ViewCompat.setTransitionName(app_logo, "app_logo");
        new Handler().postDelayed(new Runnable() {
            @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
            @Override
            public void run() {
                Intent intent = new Intent(SplashActivity.this, MainActivity.class);
                intent.putExtra("transition_name", ViewCompat.getTransitionName(app_logo));
                ActivityOptionsCompat options = ActivityOptionsCompat.makeSceneTransitionAnimation(mActivity,app_logo,ViewCompat.getTransitionName(app_logo));
                startActivity(intent, options.toBundle());

                finish();
            }
        }, 3000);
    }
}

MainActivity.Java

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:slidingLayer="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/darker_gray"
    android:orientation="vertical">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:elevation="5dp">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/white"
            app:contentInsetStartWithNavigation="0dp"
            >

            <android.support.constraint.ConstraintLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <TextView
                    android:id="@+id/activityTitle"
                    android:layout_width="90dp"
                    android:layout_height="30dp"
                    android:layout_marginTop="8dp"
                    android:layout_marginEnd="8dp"
                    android:layout_marginBottom="8dp"
                    android:gravity="center|right"
                    android:text="@string/app_name"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintEnd_toStartOf="@+id/application_logo"
                    app:layout_constraintTop_toTopOf="parent"
                    android:layout_marginRight="8dp" />

                <ImageView
                    android:id="@+id/application_logo"
                    android:layout_width="40dp"
                    android:layout_height="40dp"
                    android:layout_marginTop="8dp"
                    android:layout_marginEnd="8dp"
                    android:scaleType="centerCrop"
                    android:layout_marginBottom="8dp"
                    android:tint="@android:color/black"
                    app:srcCompat="@android:drawable/ic_dialog_email"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintTop_toTopOf="parent"
                    app:layout_constraintVertical_bias="0.0"
                    android:layout_marginRight="8dp" />

            </android.support.constraint.ConstraintLayout>
        </android.support.v7.widget.Toolbar>

    </android.support.design.widget.AppBarLayout>

</android.support.design.widget.CoordinatorLayout>

这是根据您的方案的public class MainActivity extends AppCompatActivity { @BindView(R.id.toolbar) Toolbar mToolbar; Activity mActivity; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.bind(this); mActivity = this; setSupportActionBar(mToolbar); ActivityCompat.postponeEnterTransition(this); ImageView application_logo = (ImageView) mToolbar.findViewById(R.id.application_logo); if (getIntent() != null) { Bundle extras = getIntent().getExtras(); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { String imageTransitionName = extras.getString("transition_name"); application_logo.setTransitionName(imageTransitionName); ActivityCompat.startPostponedEnterTransition(mActivity); } } } } 的示例代码。每当您使用某种样式时，请始终将其写入样式文件中。

  

注意：SharedElementTransition用于Java文件中的工具栏。一切正常。