Android系統下監聽SD卡的插入并讀取內容

Android系統下監聽SD卡的插入并讀取內容

//自己寫一個廣播監聽函數

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
                 ||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中選擇你要監聽的行為
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);//注冊監聽函數


unregisterReceiver(broadcastRec);//使用完注銷廣播監聽函數</pre>