从一个单独的类中调用一个片段的方法 [英] Calling a method in a fragment from a separate class

问题描述

什么是调用一个片段内的方法从不同类的最佳方式？我通过通过 getActivity（）的背景下进级。沿着

What's the best way to call a method inside a fragment from a different class? I passed the context via getActivity() into the class. Something along the lines of

（（片段）（（活动）上下文）.getMainFragment（））方法（）;

这只是看起来不正确....

This just doesn't look right....

推荐答案

我觉得你可以做这样的事情：

I think you can do something like this:

创建界面 OnMyDialogClickListener 和类 MyDialogFragment ，它会调用创建接口的方法

Create interface OnMyDialogClickListener and class MyDialogFragment, which will call methods of created interface

public class MyDialogFragment extends DialogFragment {

private OnMyDialogClickListener listener;

public static DialogFragment newInstance(OnMyDialogClickListener listener) {
    DialogFragment fragment = new MyDialogFragment(listener);
    return fragment;
}

private MyDialogFragment(OnMyDialogClickListener listener) {
    this.listener = listener;
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    ....
    dialog.findViewById(R.id.button).setOnClickListener(new DialogButtonsClickListener);
    return dialog
}

private final class DialogButtonsClickListener implements View.OnClickListener {

    @Override
    public void onClick(View view) {
       listener.Method();
    }
}

public static interface OnMyDialogClickListener {

    void Method();

}

}


在你的目标实现片断接口：

Implement interface in your target fragment:

public class AlbumsFragment extends BaseFragment implements OnMyDialogClickListener {

    .....

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
       //show dialog
        DialogFragment myDialogFragment = MyDialogFragment.newInstance(this);
        myDialogFragment.show(getFragmentManager(), ALBUM_ACTION_TAG);
    }

    @Override
    public void Method() {
         //some code
    }
}

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