像这样吗
public class CustomNumberPicker extends DialogFragment { private NoticeDialogListener ndl; public interface NoticeDialogListener { public void onDialogPositiveClick(DialogFragment dialog); public void onDialogNegativeClick(DialogFragment dialog); } //add a custom constructor so that you have an initialised NoticeDialogListener public CustomNumberPicker(NoticeDialogListener ndl){ super(); this.ndl=ndl; } //make sure you maintain an empty constructor public CustomNumberPicker( ){ super(); } // Use this instance of the interface to deliver action events NoticeDialogListener mListener; // Override the Fragment.onAttach() method to instantiate the NoticeDialogListener @Override public void onAttach(Activity activity) { super.onAttach(activity); //remove the check that verfis if your activity has the DialogListener Attached because you want to attach it into your list view onClick() } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { // Use the Builder class for convenient dialog construction alertDialog.Builder builder = new alertDialog.Builder(getActivity()); builder.setMessage("Sets") .setPositiveButton("set", new DialogInterface.onClickListener() { public void onClick(DialogInterface dialog, int id) { ndl.onDialogPositiveClick(dialog); } }) .setNegativeButton("cancle", new DialogInterface.onClickListener() { public void onClick(DialogInterface dialog, int id) { ndl.onDialogNegativeClick(dialog); } }); // Create the alertDialog object and return it return builder.create(); }}然后您的listView onClick变为：
tvSets.setonClickListener(new View.onClickListener() { @Override public void onClick(View v) { // This is where the Dialog should be called and // the user input from the Dialog should be returned // // DialogFragment numberpicker = new CustomNumberPicker(new NoticeDialogListener() { @Override public void onDialogPositiveClick(DialogFragment dialog) { //What you want to do incase of positive click } @Override public void onDialogNegativeClick(DialogFragment dialog) { //What you want to do incase of negative click } };); numberpicker.show(MainActivity.this.getSupportFragmentManager(), "NoticeDialogFragment"); } // Here I would like to implement the interface of CustomNumberPicker // in order to get the user input entered in the Dialog });请阅读我添加的注释。由于您确实不需要整个对话框实例来获取所需的值，因此甚至可以对其进行进一步优化。
编辑 可能的优化可能是：
将侦听器界面更改为：
public interface NoticeDialogListener { public void onDialogPositiveClick(String output); public void onDialogNegativeClick(String output); //or whatever form of output that you want }然后相应地修改已实现的方法。
