新的AdapterView.OnItemClickListener（）{}類型必須實現繼承的抽象方法AdapterView.OnItemClickListener）

Question

新的AdapterView.OnItemClickListener（）{}類型必須實現繼承的抽象方法AdapterView.OnItemClickListener.onItemClick（AdapterView，View，int，long）

為什么我在嘗試構建教程時收到此消息

package Fedail.Hello.Layout;

import android.app.Activity;
import android.os.Bundle;
import android.widget.*;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView.OnItemClickListener;


public class Layout_Feras extends Activity {
    /** Called when the activity is first created. */

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        GridView gridview = (GridView) findViewById(R.id.gridview);
        gridview.setAdapter(new ImageAdapter(this));

        gridview.setOnItemClickListener(new OnItemClickListener(){
         public void onItemClick(AdapterView<?> parent, View v, int position, Long id){
          Toast.makeText(Layout_Feras.this,"" + position, Toast.LENGTH_SHORT).show();
         }
        }
        );
    } 
}

Answer 1

改變這個：

public void onItemClick(AdapterView<?> parent, View v, int position, Long id)

對此：

public void onItemClick(AdapterView<?> parent, View v, int position, long id)

覆蓋超級方法時，必須確保所有數據類型都與原始類型匹配。

Answer 2

在onItemClick()您的Long更改為long ，看看是否有幫助。