如何附加片段与对话框片段? [英] How to attach fragment with dialog fragment?

问题描述

我使用下面的代码，该代码基本上是将AppCompatActivity附加到DialogFragment.我应该如何转换并将其用于将Fragment附加到DialogFragment.如果需要更多详细信息，请告诉我.

I using below code which was basically attaching the AppCompatActivity to DialogFragment. How should I convert and use it to attach Fragment to DialogFragment. If any more details are required please let me know.

@Override
public void onAttach(Context context) {
    super.onAttach(context);


    if (context instanceof FilterListener) {


        mFilterListener = (FilterListener) context;
    }
}

推荐答案

在显示DialogFragment之前，将其当前片段设置为targetFragment.

Before you will show your DialogFragment set your current fragment as a targetFragment for it.

dialog.setTargetFragment(this, getTargetRequestCode())

在您的DialogFragment实现中，覆盖onAttach(context: Context)方法:

In your DialogFragment implementation override the onAttach(context: Context) method:

override fun onAttach(context: Context) {
  super.onAttach(context)
  val targetFragment = this.targetFragment
  listener = if (targetFragment != null && targetFragment is YourDialogListener) {
    targetFragment
  } else if (context is YourDialogListener) {
    context
  } else {
    throw ClassCastException("$context must implement YourDialogListener.")
  }
}

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