private final BroadcastReceiver broadcastRec = new BroadcastReceiver() 
{
　　@Override
　　public void onReceive(Context context, Intent intent) {
　　if(intent.getAction().equals("android.intent.action.MEDIA_MOUNTED"))
  //SD卡已經(jīng)成功掛載
　　{
　　imagepath = 
android.os.Environment.getExternalStorageDirectory();//你的SD卡路徑
　　}else 
   if(intent.getAction().equals("android.intent.action.MEDIA_REMOVED")
   //各種未掛載狀態(tài)
　　||intent.getAction().equals("android.intent.action.ACTION_MEDIA_UNMOUNTED")
　　||intent.getAction().equals("android.intent.action.ACTION_MEDIA_BAD_REMOVAL"))
　　{
　　imagepath = android.os.Environment.getDataDirectory();//你的本地路徑
　　}
　　}
　　};
　　//在IntentFilter中選擇你要監(jiān)聽(tīng)的行為
　　IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
　　intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
　　intentFilter.addAction(Intent.ACTION_MEDIA_REMOVED);
　　//intentFilter.addAction(Intent.ACTION_MEDIA_SHARED);
　　intentFilter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
　　//intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
　　//intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
　　intentFilter.addDataScheme("file");
　　registerReceiver(broadcastRec, intentFilter);//注冊(cè)監(jiān)聽(tīng)函數(shù)
　　unregisterReceiver(broadcastRec);//使用完注銷(xiāo)廣播監(jiān)聽(tīng)函數(shù)