我如何在一个片段中访问getSupportFragmentManager() ?

我有一个FragmentActivity，我想在其中使用一个地图片段。我有一个问题，让支持片段管理器访问它。

 if (googleMap == null) {
            googleMap = ((SupportMapFragment) getSupportFragmentManager()
                    .findFragmentById(R.id.map1)).getMap();

            // check if map is created successfully or not
            if (googleMap == null) {
                Toast.makeText(getApplicationContext(),
                        "Sorry! unable to create maps", Toast.LENGTH_SHORT)
                        .show();
            }
        }

            // create marker
            MarkerOptions marker = new MarkerOptions().position(
                    new LatLng(latitude, longitude)).title("Hello Maps ");

            CameraPosition cameraPosition = new CameraPosition.Builder()
                    .target(new LatLng(latitude, longitude)).zoom(15).build();

            googleMap.animateCamera(CameraUpdateFactory
                    .newCameraPosition(cameraPosition));

            // adding marker
            googleMap.addMarker(marker);

当前回答

一些Kotlin代码在Fragment中使用supportFragmentManager。

  override fun onCreateView(
      inflater: LayoutInflater,
      container: ViewGroup?,
      savedInstanceState: Bundle?

  ): View? {

    super.onCreateView(inflater, container, savedInstanceState)
    val rootView = inflater.inflate(R.layout.fragment_home, container, false)

    // ....

    if (rootView.home_play_btn != null) {

      rootView.home_play_btn.setOnClickListener {
        val fragment: BaseFragment = ListFragment.newInstance()
        val fragManager: FragmentManager = (activity as AppCompatActivity).supportFragmentManager
        fragManager.beginTransaction()
            .replace(R.id.content_home_frame, fragment, TAG).commit()

      }

2020-01-09 00:13:18

其他回答

一些Kotlin代码在Fragment中使用supportFragmentManager。

  override fun onCreateView(
      inflater: LayoutInflater,
      container: ViewGroup?,
      savedInstanceState: Bundle?

  ): View? {

    super.onCreateView(inflater, container, savedInstanceState)
    val rootView = inflater.inflate(R.layout.fragment_home, container, false)

    // ....

    if (rootView.home_play_btn != null) {

      rootView.home_play_btn.setOnClickListener {
        val fragment: BaseFragment = ListFragment.newInstance()
        val fragManager: FragmentManager = (activity as AppCompatActivity).supportFragmentManager
        fragManager.beginTransaction()
            .replace(R.id.content_home_frame, fragment, TAG).commit()

      }

2020-01-09 00:13:18

我的父活动扩展了AppCompatActivity，所以我不得不将我的上下文转换为AppCompatActivity而不仅仅是Activity。

eg.

FragmentAddProduct fragmentAddProduct = FragmentAddProduct.newInstance();
FragmentTransaction fragmentTransaction = ((AppCompatActivity)mcontext).getSupportFragmentManager().beginTransaction();

2016-07-04 16:07:11

简单的新方法做它在kotlin

requireActivity().supportFragmentManager

2020-06-01 18:39:30

简单地得到它像这样-

getFragmentManager() // This will also give you the SupportFragmentManager or FragmentManager based on which Fragment class you have extended - android.support.v4.app.Fragment OR android.app.Fragment.

getActivity().getSupportFragmentManager();

在你的片段的onActivityCreated()方法和任何方法后被调用的onActivityCreated()。

2014-07-04 02:48:48

下面的代码为我完成了这个任务

 SupportMapFragment mapFragment = ((SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map));
    mapFragment.getMapAsync(this);

2018-03-07 22:43:00

我如何在一个片段中访问getSupportFragmentManager() ?

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