如何在片段中访问 getSupportFragmentManager()? [英] How can I access getSupportFragmentManager() in a fragment?

问题描述

我有一个 FragmentActivity，我想在其中使用一个地图片段.我在让支持片段管理器访问它时遇到问题.

I have a FragmentActivity and I want to use a map fragment within it. I'm having a problem getting the support fragment manager to access it.

 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);

推荐答案

可以直接拨打

getFragmentManager() 

获取片段管理器.

或

在你的片段中，

创建字段:

private FragmentActivity myContext;

覆盖片段的 onAttach 方法:

override onAttach method of your fragment :

@Override
public void onAttach(Activity activity) {
    myContext=(FragmentActivity) activity;
    super.onAttach(activity);
}

当您需要获取支持片段管理器调用时:

When you need to get Support fragment manager call :

FragmentManager fragManager = myContext.getSupportFragmentManager(); //If using fragments from support v4

或

FragmentManager fragManager = myContext.getFragmentManager();

大功告成.

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