Android弹出多选框下拉框的实例

1 安卓弹出对话框是复选框的代码

 package com.example.b;

 import android.os.Bundle;
 import android.preference.MultiSelectListPreference;
 import android.app.Activity;
 import android.view.Menu;

 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.app.AlertDialog.Builder;
 import android.content.DialogInterface;
 import android.view.View;
 import android.widget.Button;
 import android.widget.EditText;


 public class MainActivity extends Activity {
        private EditText editText;
         private final static int DIALOG=1;
         boolean[] flags=new boolean[]{false,false,false};//初始复选情况
         String[] items=null;

         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.activity_main);

             items=getResources().getStringArray(R.array.hobby);
             editText=(EditText)findViewById(R.id.msg);
             Button button = (Button) findViewById(R.id.button);
             button.setOnClickListener(new View.OnClickListener() {
                 @SuppressWarnings("deprecation")
                 public void onClick(View v) {
                     // 显示对话框
                     showDialog(1);
                 }
             });
         }


         @Override
         protected Dialog onCreateDialog(int id) {

             Dialog dialog = null;
             switch (id) {
             case 1:
                 Builder builder = new AlertDialog.Builder(this);
                 builder.setIcon(R.drawable.ic_launcher);
                 builder.setTitle("title");
                 builder.setMultiChoiceItems(items, flags, new DialogInterface.OnMultiChoiceClickListener() {

                     @Override
                     public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                         flags[which]=isChecked;
                         String results = "";
                         for (int i = 0; i < flags.length; i++) {
                             if(flags[i])
                             {
                                 results=results+items[i];
                             }
                         }

                         editText.setText(results);
                     }
                 });
                 builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

                     @Override
                     public void onClick(DialogInterface dialog, int which) {

                     }
                 });
                 dialog = builder.create();
                 break;

             default:
                 break;
             }

             return dialog;
         }

 }

2 layout

 "http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_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"
     android:orientation="vertical"
     tools:context=".MainActivity" >


         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/msg2"
         android:text="@string/hello_world" />

     ""
         android:id="@+id/msg"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:editable="false"
         android:cursorVisible="false" />

     "显示复选框对话框"
         android:id="@+id/button"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content" />

3 加入 多选框的选项

 "1.0" encoding="utf-8"?>

     "hobby">
      游泳
      打篮球
      登山

4 效果图