声明抽象并实现接口的抽象

Question

我正在努力解决一个宣布抽象实施的抽象＆＃34;错误。我在单击自定义布局中的按钮时实现回调接口捕获数据的过程中，我收到此错误。我在我的活动中调用了覆盖方法（TestDialogInterface），但这似乎无法解决问题。以下是尝试解决特定问题时的具体信息。

错误： ＆＃34; Class＆＃39; TestActivity＆＃39;必须被声明为抽象或实现抽象方法＆on; onPositiveClick（int）＆＃39;在＆InterfaceHistener＆＃39;＆＃34;

中

TextActivity类：

public class TestActivity implements TestDialogInterface.InterfaceListener {
    @Override
    public void onClickPositive(int someNumber){
    //do something
    }
    ...
}

TestDiaologInerface.java：

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;

public class TestDialogInterface extends DialogFragment {

    public interface InterfaceListener {
        public void onPositiveClick(int someNumber);
    }

    InterfaceListener interfaceListener;

    //check to see if interface is utilized in main activity event
    @Override
    public void onAttach(Context context){
        super.onAttach(context);
        try {
            interfaceListener = (InterfaceListener) context;
        } catch (ClassCastException e){
            throw new ClassCastException(context.toString() + " must implement InterfaceListner");
        }
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the Builder class for convenient dialog construction
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle("Select Date")
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        interfaceListener.onPositiveClick(1);
                    }
                })
                .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // User cancelled the dialog
                    }
                });
        return builder.create();
    }
}