我的AlertDialog没有setMultiChoiceItems和setSingleChoiceItems方法，怎么办？

[YXTS122]

MainActivity.java

package com.example.ch02_dan;
  
  
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
  
  
public class MainActivity extends Activity implements OnClickListener {
      
    final String[] arrayFruit=new String[]{"苹果","橘子","草莓","香蕉"};
    private int selectedFruitIndex;
    final boolean [] arrayFruitSelected=new boolean[]{true,true,false,false};


     
     
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button=(Button)findViewById(R.id.bt1);
        button.setOnClickListener(this);
        Button butt=(Button)findViewById(R.id.bt2);
        butt.setOnClickListener(this);
        Button but=(Button)findViewById(R.id.bt3);
        but.setOnClickListener(this);
  
  
    }
      
    @Override
    public void onClick(View v)
    {
       switch (v.getId())
       {
       case R.id.bt1:
                  
                AlertDialog dia=new AlertDialog.Builder(this ).create();
                dia.setTitle("你喜欢吃哪种水果？");
                // dia.setSingleChoiceItems(arrayFruit,0,listen);
                dia.setButton(AlertDialog.BUTTON_POSITIVE,"确定",listener);
                dia.setButton(AlertDialog.BUTTON_NEGATIVE,"取消",liss);
                dia.show();
                break;
       case R.id.bt2:
            
           AlertDialog di=new AlertDialog.Builder(this ).create();
           di.setTitle("请输入:");
            di.setView(new EditText(this));
           di.setButton(AlertDialog.BUTTON_POSITIVE,"确定",listener);
           di.setButton(AlertDialog.BUTTON_NEGATIVE,"取消",liss);
           di.show();    
           break;
       case R.id.bt3:
    	   AlertDialog diast=new AlertDialog.Builder(this ).create();
           diast.setTitle("你喜欢吃哪种水果？");
          // diast.setMultiChoiceItems(arrayFruit,arrayFruitSelected,sten);
           diast.setButton(AlertDialog.BUTTON_POSITIVE,"确定",stener);
           diast.setButton(AlertDialog.BUTTON_NEGATIVE,"取消",liss);
           diast.show();
           break;
       }
     }

    
    DialogInterface.OnMultiChoiceClickListener sten=new DialogInterface.OnMultiChoiceClickListener()
    {
    	public void onClick(DialogInterface  dialog,int which,boolean isChecked)
    	{
    	   arrayFruitSelected[which]=isChecked;
    	}
    };
    

DialogInterface.OnClickListener stener=new DialogInterface.OnClickListener()
{
	public void onClick(DialogInterface  dialog,int which)
	{
		StringBuilder stringBuilder=new StringBuilder();
		for (int i=0;i<arrayFruitSelected.length;i++)
		{
			if (arrayFruitSelected[i]==true )
			{
				stringBuilder.append(arrayFruit[i]+"、");
			}
		}
		Toast toast1=Toast.makeText(MainActivity.this,stringBuilder.toString(),Toast.LENGTH_SHORT);
		toast1.show();
	}
	
};
		
		

    

  
  
DialogInterface.OnClickListener listen=new DialogInterface.OnClickListener()
{
    public void onClick(DialogInterface  dialog,int which)
    {
        selectedFruitIndex=which;
    }
};
  
  
DialogInterface.OnClickListener listener=new DialogInterface.OnClickListener()
{
    public void onClick(DialogInterface  dialog,int which)
    {
        Toast toast1=Toast.makeText(MainActivity.this,arrayFruit[selectedFruitIndex],Toast.LENGTH_SHORT);
        toast1.show();
    }
};
  
  
  
  
DialogInterface.OnClickListener liss=new DialogInterface.OnClickListener()
{
    public void onClick(DialogInterface  dialog,int which)
    {
    }
};
  
  
  
  
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
  
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}
    
     

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.ch02_jsq.MainActivity"
    android:orientation="vertical">
     
    
     
    <Button 
        android:id="@+id/bt1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/xuan"
         android:textSize="20sp"/>
    
    <Button
    android:id="@+id/bt2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
      android:text="@string/xua"
       android:textSize="20sp"/>
    
    <Button 
        android:id="@+id/bt3"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/uan"
         android:textSize="20sp"/>
    
 
 
 
     
     
    </LinearLayout>
   
  

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">dan</string>
    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
    <string name="xuan">选择</string>
    <string name="xua">选项</string>
    <string name="uan">复选</string>
    
    
</resources>
  

[YXTS122]

我的AlertDialog没有setSingleChoiceItems和setMultiChoiceItems，怎么办啊？？？？？？？

[YXTS122]

解决了

 public void onClick(View v)
    {
       switch (v.getId())
       {
       case R.id.bt1:
                   
                new AlertDialog.Builder(this )
                .setTitle("你喜欢吃哪种水果？")
                .setSingleChoiceItems(arrayFruit,0,listen)
                .setPositiveButton("确定",listener)
                .setNegativeButton("取消",liss)
                .show();
                break;
       case R.id.bt2:
             
           AlertDialog di=new AlertDialog.Builder(this ).create();
           di.setTitle("请输入:");
            di.setView(new EditText(this));
           di.setButton(AlertDialog.BUTTON_POSITIVE,"确定",listener);
           di.setButton(AlertDialog.BUTTON_NEGATIVE,"取消",liss);
           di.show();    
           break;
       case R.id.bt3:
           new AlertDialog.Builder(this )
           .setTitle("你喜欢吃哪种水果？")
           .setMultiChoiceItems(arrayFruit,arrayFruitSelected,sten)
           .setPositiveButton("确定",stener)
           .setNegativeButton("取消",liss)
           .show();
           break;
       }
     }