android - 将 FlutterFragment 添加到 Activity？

Question

我正在尝试将 flutter 应用程序添加为原生 android Activity 中的 fragment 。 对于 flutter，我使用了默认的计数器应用程序 在 native Android 方面，我使用了默认抽屉导航模板

我正在尝试在用户点击抽屉导航中的图库磁贴时添加 flutter 应用

class GalleryFragment : FragmentActivity() {
companion object {
    // Define a tag String to represent the FlutterFragment within this
    // Activity's FragmentManager. This value can be whatever you'd like.
    private const val TAG_FLUTTER_FRAGMENT = "flutter_fragment"
}

    // Declare a local variable to reference the FlutterFragment so that you
    // can forward calls to it later.
    private var flutterFragment: FlutterFragment? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        // Inflate a layout that has a container for your FlutterFragment. For
        // this example, assume that a FrameLayout exists with an ID of
        // R.id.fragment_container.
        setContentView(R.layout.content_main)

        // Get a reference to the Activity's FragmentManager to add a new
        // FlutterFragment, or find an existing one.
        val fragmentManager: FragmentManager = supportFragmentManager

        // Attempt to find an existing FlutterFragment, in case this is not the
        // first time that onCreate() was run.
        flutterFragment = fragmentManager
            .findFragmentByTag(TAG_FLUTTER_FRAGMENT) as FlutterFragment?

        // Create and attach a FlutterFragment if one does not exist.
        if (flutterFragment == null) {
            var newFlutterFragment = FlutterFragment.withCachedEngine("my_engine").build<FlutterFragment>()
            flutterFragment = newFlutterFragment
            fragmentManager
                .beginTransaction()
                .add(
                    R.id.nav_host_fragment,
                    newFlutterFragment,
                    TAG_FLUTTER_FRAGMENT
                )
                .commit()
        }
    }
}

当我尝试使用 fragment 管理器添加 FlutterFragment 时出现此错误。 Fragment 和 FlutterFragment 不匹配。

Answer 1

根据文档，将 Flutter 添加到 Fragment 仍然是实验性的。有关详细信息，请阅读:https://github.com/flutter/flutter/wiki/Experimental:-Add-Flutter-Fragment