Android开发本地及网络Mp3音乐播放器(十九)通知媒体库更新刚下载的MP3

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通知媒体库更新

package com.iwanghang.drmplayer;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.BroadcastReceiver;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.Cursor;
import android.graphics.Path;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v4.app.DialogFragment;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.iwanghang.drmplayer.utils.Constant;
import com.iwanghang.drmplayer.utils.DownloadUtils;
import com.iwanghang.drmplayer.utils.MediaScanner;
import com.iwanghang.drmplayer.utils.MediaUtils;
import com.iwanghang.drmplayer.utils.SearchMusicUtils;
import com.iwanghang.drmplayer.vo.SearchResult;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;

/**
 * Created by iwanghang on 16/5/3.
 * DownloadDialogFargment
 */
public class DownloadDialogFragment extends DialogFragment {

    private SearchResult searchResult;//当前要下载的歌曲对象
    private MainActivity mainActivity;
    public static DownloadDialogFragment newInstance(SearchResult searchResult){
        DownloadDialogFragment downloadDialogFragment = new DownloadDialogFragment();
        downloadDialogFragment.searchResult = searchResult;
        return downloadDialogFragment;
    }

    private String[] items;

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        mainActivity = (MainActivity) getActivity();
        //items = new String[]{"下载","取消"};
        items = new String[]{getString(R.string.download),getString(R.string.cancel)};
    }

    //创建对话框的事件方法
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        final AlertDialog.Builder builder = new AlertDialog.Builder(mainActivity);
        builder.setCancelable(true);//返回键可以取消
        builder.setItems(items,new DialogInterface.OnClickListener(){
            @Override
            public void onClick(DialogInterface dialog, int which) {
                switch (which) {
                    case 0:
                        //执行下载
                        downloadMusic();
                        break;
                    case 1://取消
                        dialog.dismiss();
                        break;
                }
            }
        });
        return builder.show();
    }

    //下载音乐
    private void downloadMusic() {
        Toast.makeText(mainActivity, "正在下载:" + searchResult.getMusicName(), Toast.LENGTH_LONG).show();
        DownloadUtils.getsInstance().setListener(new DownloadUtils.OnDownloadListener() {
            @Override
            public void onDowload(String mp3Url) { //下载成功
                Toast.makeText(mainActivity, "下载成功", Toast.LENGTH_SHORT).show();


                System.out.println("DownloadDialogFragment.downloadMusic @ = " + Environment.getExternalStorageDirectory()+Constant.DIR_MUSIC + "/" + mp3Url);
                //更新媒体库
                scanFile(mainActivity,Environment.getExternalStorageDirectory()+Constant.DIR_MUSIC + "/" + mp3Url);
                //更新 本地音乐列表



            }


            @Override
            public void onFailed(String error) { //下载失败
                Toast.makeText(mainActivity, error, Toast.LENGTH_SHORT).show();

            }
        }).download(searchResult);
    }




    //更新媒体库
    /**
     * 通知媒体库更新文件
     * @param context
     * @param filePath 文件全路径
     *
     * */
    public void scanFile(Context context, String filePath) {
        Intent scanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        scanIntent.setData(Uri.fromFile(new File(filePath)));
        context.sendBroadcast(scanIntent);
    }

}

Android开发本地及网络Mp3音乐播放器(十九)通知媒体库更新刚下载的MP3

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原文地址：http://blog.csdn.net/iwanghang/article/details/51427158