android 選擇系統內建鈴聲和選擇自訂鈴聲

由於公司最近要開發一個鬧鐘，需要提供選擇系統內建鈴聲和自訂鈴聲的功能，先做了一個最簡單的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();    }    //執行個體化控制項    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);            }        //初始化資料    private void initData(){//            getAllMusic();//        scannerMediaFile();    }        /**     * 掃描android的系統鈴聲     */    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();    }            /**     * 擷取android手機中全部的音樂     */    private void getAllMusic(){                 ContentResolver cr = getContentResolver();        //ContentProvider只能由ContentResolver發送請求        Uri AUDIO_URI = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;//                Uri AUDIO_URI = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;        //擷取音頻檔案的URI,        //視頻 MediaStore.Video.Media.EXTERNAL_CONTENT_URI        //圖片MediaStore.Images.Media.EXTERNAL_CONTENT_URI        String[] columns  = new String[] {MediaStore.Audio.Media.TITLE, MediaStore.Audio.Media.DATA};//查詢的欄位        //要讀的列名,這些常量可以查GOOGLE官方開發文檔,TITLE是標題 DATA是路徑                Cursor cursor = cr.query(AUDIO_URI, columns, null, null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);//查詢//        Cursor cursor = cr.query(AUDIO_URI, columns, MediaStore.Audio.Media.DURATION+">?", new String[]{"10000"}, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);//帶where的查詢        //跟查詢SQL一樣了,除了第一個參數不同外.後面根據時間長度過濾小於10秒的檔案              if(cursor != null){            while(cursor.moveToNext()){                //迴圈讀取第一列,即檔案路徑,0列是標題                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;    }    }

：