我想设置通过我的Andr​​oid应用程序铃声。我试着用这个code

 公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.main）;
    字符串的文件路径=/ SD卡/ sound.mp3;
    文件ringtoneFile =新的文件（文件路径）;

    ContentValues​​内容=新ContentValues​​（）;
    content.put（MediaStore.MediaColumns.DATA，ringtoneFile.getAbsolutePath（））;
    的System.out.println（ringtoneFile.getAbsolutePath（）++++++++++++++++++++++++++）;
    content.put（MediaStore.MediaColumns.TITLEchinnu）;
    content.put（MediaStore.MediaColumns.SIZE，215454）;
    content.put（MediaStore.MediaColumns.MIME_TYPEsound.mp3）;
    content.put（MediaStore.Audio.Media.ARTIST，麦当娜）;
    content.put（MediaStore.Audio.Media.DURATION，230）;
    content.put（MediaStore.Audio.Media.IS_RINGTONE，真正的）;
    content.put（MediaStore.Audio.Media.IS_NOTIFICATION，假）;
    content.put（MediaStore.Audio.Media.IS_ALARM，假）;
    content.put（MediaStore.Audio.Media.IS_MUSIC，假）;


    //把它插入到数据库
    字符串变量=;
    Log.i（TAG的文件的绝对路径是：+
    ringtoneFile.getAbsolutePath（））;
    开放的我们的uri = MediaStore.Audio.Media.getContentUriForPath（
    ringtoneFile.getAbsolutePath（））;
    乌里newUri = Context.getContentResolver（）插入（URI，内容）。
    ringtoneUri = newUri;
   Log.i（TAG的铃声URI是：+ ringtoneUri）;
   RingtoneManager.setActualDefaultRingtoneUri（背景下，
   RingtoneManager.TYPE_RINGTONE，newUri）;


}
}
 

但我得到的错误：上下文不能被解析为一个类型。这是什么意思？我与Android开发的初学者。我把写_ external_storage许可也。 还有什么做我必须做才能成功运行此应用程序？在此先感谢

 字符串的文件路径=/ SD卡/ Fast_N_Furious_2009.mp3;
    文件ringtoneFile =新的文件（文件路径）;

    ContentValues​​内容=新ContentValues​​（）;
    content.put（MediaStore.MediaColumns.DATA，ringtoneFile.getAbsolutePath（））;
    content.put（MediaStore.MediaColumns.TITLEchinnu）;
    content.put（MediaStore.MediaColumns.SIZE，215454）;
    content.put（MediaStore.MediaColumns.MIME_TYPE，音频/ *）;
    content.put（MediaStore.Audio.Media.ARTIST，麦当娜）;
    content.put（MediaStore.Audio.Media.DURATION，230）;
    content.put（MediaStore.Audio.Media.IS_RINGTONE，真正的）;
    content.put（MediaStore.Audio.Media.IS_NOTIFICATION，假）;
    content.put（MediaStore.Audio.Media.IS_ALARM，假）;
    content.put（MediaStore.Audio.Media.IS_MUSIC，假）;


    //把它插入到数据库
    Log.i（TAG的文件的绝对路径是：+
    ringtoneFile.getAbsolutePath（））;
    开放的我们的uri = MediaStore.Audio.Media.getContentUriForPath（ringtoneFile.getAbsolutePath（））;
    //乌里newUri = context.getContentResolver（）插入（URI，内容）。
    乌里newUri = getContentResolver（）插入（URI，内容）。
    串ringtoneUri = newUri.toString（）;

    Log.i（TAG的铃声URI是：+ ringtoneUri）;
    RingtoneManager.setActualDefaultRingtoneUri（getBaseContext（），RingtoneManager.TYPE_RINGTONE，newUri）;
 

I am trying set a ringtone through my android application. I tried with this code

  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    String filepath ="/sdcard/sound.mp3";
    File ringtoneFile = new File(filepath);

    ContentValues content = new ContentValues();
    content.put(MediaStore.MediaColumns.DATA,ringtoneFile.getAbsolutePath());
    System.out.println(ringtoneFile.getAbsolutePath()+"+++++++++++++++++++++++++");
    content.put(MediaStore.MediaColumns.TITLE, "chinnu");
    content.put(MediaStore.MediaColumns.SIZE, 215454);
    content.put(MediaStore.MediaColumns.MIME_TYPE, "sound.mp3");
    content.put(MediaStore.Audio.Media.ARTIST, "Madonna");
    content.put(MediaStore.Audio.Media.DURATION, 230);
    content.put(MediaStore.Audio.Media.IS_RINGTONE, true);
    content.put(MediaStore.Audio.Media.IS_NOTIFICATION, false);
    content.put(MediaStore.Audio.Media.IS_ALARM, false);
    content.put(MediaStore.Audio.Media.IS_MUSIC, false);


    //Insert it into the database
    String TAG="";
    Log.i(TAG, "the absolute path of the file is :"+
    ringtoneFile.getAbsolutePath());
    Uri uri = MediaStore.Audio.Media.getContentUriForPath(
    ringtoneFile.getAbsolutePath());
    Uri newUri = Context.getContentResolver().insert(uri, content);
    ringtoneUri = newUri; 
   Log.i(TAG,"the ringtone uri is :"+ringtoneUri);
   RingtoneManager.setActualDefaultRingtoneUri(context,
   RingtoneManager.TYPE_RINGTONE,newUri);


}
}

But I get the error: context cannot be resolved to a type. What does this mean? I am a beginner with android development. I set write_external_storage permission also.What more do I have to do to run this application successfully?Thanks in advance

    String filepath ="/sdcard/Fast_N_Furious_2009.mp3";
    File ringtoneFile = new File(filepath);

    ContentValues content = new ContentValues();
    content.put(MediaStore.MediaColumns.DATA,ringtoneFile.getAbsolutePath());
    content.put(MediaStore.MediaColumns.TITLE, "chinnu");
    content.put(MediaStore.MediaColumns.SIZE, 215454);
    content.put(MediaStore.MediaColumns.MIME_TYPE, "audio/*");
    content.put(MediaStore.Audio.Media.ARTIST, "Madonna");
    content.put(MediaStore.Audio.Media.DURATION, 230);
    content.put(MediaStore.Audio.Media.IS_RINGTONE, true);
    content.put(MediaStore.Audio.Media.IS_NOTIFICATION, false);
    content.put(MediaStore.Audio.Media.IS_ALARM, false);
    content.put(MediaStore.Audio.Media.IS_MUSIC, false);


    //Insert it into the database
    Log.i(TAG, "the absolute path of the file is :"+
    ringtoneFile.getAbsolutePath());
    Uri uri = MediaStore.Audio.Media.getContentUriForPath(ringtoneFile.getAbsolutePath());
    //Uri newUri = context.getContentResolver().insert(uri, content);
    Uri newUri = getContentResolver().insert(uri, content); 
    String ringtoneUri = newUri.toString();

    Log.i(TAG,"the ringtone uri is :"+ringtoneUri);
    RingtoneManager.setActualDefaultRingtoneUri(getBaseContext(),RingtoneManager.TYPE_RINGTONE,newUri);