Android-需要基本语法方面的帮助吗

我有一些代码来创建一个带有几个选项的基本对话框——如果我选择了某个选项，我会收到一条消息，说这已经被点击了——我知道非常基本的东西

这是我的代码：

public方法-public void onClick（DialogInterface dialog，int，boolean被选中）返回一个错误，指出它必须重写超类方法

谁能告诉我这个超类方法是什么吗？我好像到处都找不到。 提前谢谢

奇伦

package net.learn2develop.Dialog2;

import android.app.Activity;
import android.os.Bundle;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {
    CharSequence[] items = { "Google", "Apple", "Microsoft" };
    boolean[] itemsChecked = new boolean [items.length];

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button btn = (Button) findViewById(R.id.btn_dialog);
        btn.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                showDialog(0);
            }
        });
    }

    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
        case 0:
            return new AlertDialog.Builder(this)
            .setIcon(R.drawable.ic_launcher)
            .setTitle("This is a dialog with some simple text...")
            .setPositiveButton("OK", new
                DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        // TODO Auto-generated method stub
                        Toast.makeText(getBaseContext(), "OK clicked!", Toast.LENGTH_SHORT).show();
                    }
            })
            .setNegativeButton("Cancel", new
                DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        // TODO Auto-generated method stub
                        Toast.makeText(getBaseContext(), "Cancel clicked!", Toast.LENGTH_SHORT).show();
                    }
    })
    .setMultiChoiceItems(items, itemsChecked, new DialogInterface.OnMultiChoiceClickListener() {
                        @Override
                        **public void onClick(DialogInterface dialog, int which, boolean isChecked)** {
                        // TODO Auto-generated method stub
                        Toast.makeText(getBaseContext(), items[which] + (isChecked ? " checked!" : " unchecked!"), Toast.LENGTH_SHORT).show();   
                        }
                    }
        )
        .create();
        }
        return null;
    }
}

---

代码看起来不错。检查您的项目属性，查看您的项目符合性是否为1.6。右键单击项目->

属性

->下的

Java编译器

->

编译器符合性应设置为1.6

。Java 1.5不允许在此处使用

@Override

注释