android 选择系统自带铃声和选择自定义铃声

由于公司最近要开发一个闹钟，需要提供选择系统自带铃声和自定义铃声的功能，先做了一个最简单的demo

package com.example.mymusiclist;

import java.util.ArrayList;
import java.util.List;

import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

    List<String> list_ringtone = new ArrayList<String>();
    List<String> list_ringtonePath = new ArrayList<String>();
    List<String> list_music = new ArrayList<String>();
    List<String> list_musicPath = new ArrayList<String>();
    List<String> list_alarm = new ArrayList<String>();
    List<String> list_alarmPath = new ArrayList<String>();
    List<String> list_notification = new ArrayList<String>();
    List<String> list_notificationPath = new ArrayList<String>();
    
    private ListView lv_listview;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        initData();
        
        initWidget();
    }

    //实例化控件
    private void initWidget(){
        
        lv_listview = (ListView) this.findViewById(R.id.listView1);
        
        MyBaseAdapter mba = new MyBaseAdapter(list_music);
//        MyBaseAdapter mba = new MyBaseAdapter(list_ringtone);
//        MyBaseAdapter mba = new MyBaseAdapter(list_notification);
//        MyBaseAdapter mba = new MyBaseAdapter(list_alarm);
        
        lv_listview.setAdapter(mba);
        
    }
    
    //初始化数据
    private void initData(){
//            getAllMusic();
//        scannerMediaFile();
    }
    
    /**
     * 扫描android的系统铃声
     */
    private void scannerMediaFile() {
        
        //notification
        ContentResolver cr = this.getContentResolver();
        Cursor cursor = cr.query(MediaStore.Audio.Media.INTERNAL_CONTENT_URI,
                new String[] { MediaStore.Audio.Media._ID,
                        MediaStore.Audio.Media.DATA,
                        MediaStore.Audio.Media.TITLE }, "is_notification != ?",
                new String[] { "0" }, "_id asc");
        if (cursor == null) {
            return;
        }
        while (cursor.moveToNext()) {
            list_notification.add(cursor.getString(1));
        }
        
        //alarm
        cursor = cr.query(MediaStore.Audio.Media.INTERNAL_CONTENT_URI,
                new String[] { MediaStore.Audio.Media._ID,
                        MediaStore.Audio.Media.DATA,
                        MediaStore.Audio.Media.TITLE }, "is_alarm != ?",
                new String[] { "0" }, "_id asc");
        if (cursor == null) {
            return;
        }
        while (cursor.moveToNext()) {
            list_alarm.add(cursor.getString(1));
        }
        
        //ringtone
        cursor = cr.query(MediaStore.Audio.Media.INTERNAL_CONTENT_URI,
                new String[] { MediaStore.Audio.Media._ID,
                MediaStore.Audio.Media.DATA,
                MediaStore.Audio.Media.TITLE }, "is_ringtone != ?",
                new String[] { "0" }, "_id asc");
        if (cursor == null) {
            return;
        }
        while (cursor.moveToNext()) {
            list_ringtone.add(cursor.getString(1));
        }
        
        //music
        cursor = cr.query(MediaStore.Audio.Media.INTERNAL_CONTENT_URI,
                new String[] { MediaStore.Audio.Media._ID,
                MediaStore.Audio.Media.DATA,
                MediaStore.Audio.Media.TITLE }, "is_music != ?",
                new String[] { "0" }, "_id asc");
        if (cursor == null) {
            return;
        }
        while (cursor.moveToNext()) {
            list_music.add(cursor.getString(1));
        }
        
        cursor.close();
    }
    
    
    /**
     * 获取android手机中全部的音乐
     */
    private void getAllMusic(){
        
         ContentResolver cr = getContentResolver();
        //ContentProvider只能由ContentResolver发送请求
        Uri AUDIO_URI = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
//                Uri AUDIO_URI = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
        //获取音频文件的URI,
        //视频 MediaStore.Video.Media.EXTERNAL_CONTENT_URI
        //图片MediaStore.Images.Media.EXTERNAL_CONTENT_URI
        String[] columns  = new String[] {MediaStore.Audio.Media.TITLE, MediaStore.Audio.Media.DATA};//查询的字段
        //要读的列名,这些常量可以查GOOGLE官方开发文档,TITLE是标题 DATA是路径
        
        Cursor cursor = cr.query(AUDIO_URI, columns, null, null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);//查询
//        Cursor cursor = cr.query(AUDIO_URI, columns, MediaStore.Audio.Media.DURATION+">?", new String[]{"10000"}, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);//带where的查询
        //跟查询SQL一样了,除了第一个参数不同外.后面根据时长过滤小于10秒的文件
      
        if(cursor != null){

            while(cursor.moveToNext()){
                //循环读取第一列,即文件路径,0列是标题
                list_music.add(cursor.getString(1));
//                    list_musicPath.add(cursor.getString(1));
            }    
                cursor.close();
        }
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
    
    private class MyBaseAdapter extends BaseAdapter{

        private List<String> Data;
        public MyBaseAdapter(List<String> data){
            this.Data = data;
        }
        
        @Override
        public int getCount() {
            return this.Data.size();
        }

        @Override
        public Object getItem(int arg0) {
            return null;
        }

        @Override
        public long getItemId(int arg0) {
            return 0;
        }

        @Override
        public View getView(int position, View converView, ViewGroup arg2) {
            ViewHodler viewHodler;
            if(converView == null){
                viewHodler = new ViewHodler();
                converView = LayoutInflater.from(getApplicationContext()).inflate(R.layout.test_tem_textview, null);
                viewHodler.ringName = (TextView) converView.findViewById(R.id.textView1);
                converView.setTag(viewHodler);
            }else{
                viewHodler = (ViewHodler) converView.getTag();
            }
            viewHodler.ringName.setText(this.Data.get(position));
            
            return converView;
        }
        
    }
    
    private class ViewHodler{
        TextView ringName;
    }
    
}

效果图：