java - 在静态方法中访问 getActivity()

Question

我这里有这个调用方法setPoint的类

public class PointsList extends Fragment {    
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.listpoints, container, false);

    public static class PointCreation extends Fragment {
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                         Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.point_creation, container, false);
        setPoint(view, CREATE);
        return view;
    }
}

static final void setPoint(View view, int goal) {
final EditText SerialField = (EditText) view.findViewById(R.id.Serial);
    if(goal == CREATE) {
        Button buttonGuardar = (Button) view.findViewById(R.id.buttonGuardar);
        buttonGuardar.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String Serial = SerialField.getText().toString();
                pointsList.add(new Serial);
                //go back to R.layout.listpoints
            }
        });
    }
}

我的目标是在单击按钮将新序列号添加到列表后，我可以从

返回到上一个菜单

R.layout.point_creation to R.layout.listpoints

为了移动 fragment ，我通常使用这样的东西:

            Fragment fragment = new PointsList();
            FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
            fragmentManager.beginTransaction()
                    .replace(R.id.container, fragment)
                    .commit();

但里面:

static final void setPoint(View view, int goal)
getActivity().getSupportFragmentManager();

不能从静态上下文中引用，我不知道如何通过使静态类成为非静态来解决这个问题？我有一些我在静态类中使用的全局标志(有 2 个)，因为

public class PointCreation(int something) extends Fragment 

我做不到。

Answer 1

您可以从 View 中获取 Activity :

Activity activity = (Activity)view.getContext()

如果您使用 FragmentActivity(似乎是这样)，则将 Context 转换为 FragmentActivity(而不是常规 Activity)，然后您将能够调用 getSupportFragmentManager()

FragmentActivity activity = (FragmentActivity)view.getContext();
FragmentManager manager = activity.getSupportFragmentManager();