Lập trình android C12 audio video camera telephone SMS

Ch ng 12 Audio – Video - Camera – Telephone - SMS Lê V n H nh levanhanhvn@gmail.com N I DUNG 1.Gi i thi u v Media Player 2.Xây d ng Media Player Audio & Video 3.Các u n Media Player 4.Recoding Audio & Video i u n ch p hình v i Camera 6.L u t p tin media vào Media Store 7.Telephone 8.SMS GI I THI U V MEDIAPLAYER • Android cung c p l p MediaPlayer đ qu n lý tác v đa truy n thông bao g m t p tin âm thanh, hình nh, video • Có th truy xu t t p tin media thông qua vi c l u tr nh tài nguyên ng d ng, b nh thi t b , content provider ho c thơng qua URL • MediaPlayer qu n lý t p tin media lu ng x lý thông qua m t t p tr ng thái sau: o Kh i t o đ i t ng MediaPlayer o Chu n b b thu phát MediaPlayer o B t đ u th c hi n thu phát o Th c hi n thao tác Pause Stop t p tin media thu phát o Hồn thành q trình thu phát XỂY D NG MEDIAPLAYER AUDIO • Android h tr truy xu t t p tin Audio thông qua l u tr nh : tài nguyên ng d ng, b nh thi t b , content provider x lý lu ng URL • Có th đóng gói t p tin Audio vào th m c res/raw nh m t d ng tài nguyên c a ng d ng • thu phát m t t p tin Audio c n t o m t đ i t ng MediaPlayer thi t l p ngu n d li u cho đ i t ng • Th c hi n thu phát b ng ph ng th c Create() truy n vào tham s : context c a ng d ng m t nh ng d ng tài nguyên sau: o nh danh c a tài nguyên o URI tr đ n n i l u tr c a t p tin thi t b o URI tr đ n t p tin tr c n thông qua URL o URI tr đ n dòng d li u b ng c a content provider Xây d ng MediaPlayer Audio • th c thi vi c thu phát t p tin video c n t o m t hình cho vi c trình chi u Có hai cách đ th c hi n công vi c này: o S d ng thành ph n Video View, đóng gói thao tác đ i t ng MediaPlayer (t o trình chi u, chu n b c p phát t p tin) vào thành ph n View o Xây d ng hình hi n th riêng g n k t d li u thông qua đ i t ng MediaPlayer Xây d ng MediaPlayer Audio • Ví d t o đ i t ng MediaPlayer • Ví d t o b thu phát b ng Video View Xây d ng MediaPlayer Audio • Ví d t o hình hi n th Video View Xây d ng MediaPlayer Audio • T o đ i t ng Surface Holder đ h tr vi c c p nh t ngu n x lý bên d i Xây d ng MediaPlayer Audio • Kh i t o n i dung c a t p tin c n trình chi u CÁC I U KHI N TRểN MEDIAPLAYER • Kh i ch y đ i t Vd: ng b ng ph ng th c start() Mediaplayer mediaPlayer = new MediaPlayer(); mediaPlayer.start(); • MediaPlayer cung c p m t s ph ng th c cho vi c u n nh getDuration, getCurrentPositon, seekTo Vd: Telephone • Ví d đ ng kí Intent AndroidManifest Telephone • Ví d x lý cu c g i t i SMS • G i tin nh n b ng cách t o m t Intent đ g i ng d ng Message thi t b Vd: //T o tin nh n SMS Intent smsIntent = new Intent(Intent.ACTION_SENDTO, Uri.parse(“sms:123456”)); smsIntent.putExtra(“sms_body”, “Press send to send me”); startActivity(smsIntent); • G i tin nh n MMS có ch a t p tin Media Vd: //T o tin nh n MMS Uri attached_Uri = Uri.parse("content://media/external/images/media/1"); Intent mmsIntent = new Intent(Intent.ACTION_SEND,attached_Uri); mmsIntent.putExtra("sms_body", "Please see the attached image"); mmsIntent.putExtra("address", "07912355432"); mmsIntent.putExtra(Intent.EXTRA_STREAM, attached_Uri); mmsIntent.setType("image/png"); startActivity(mmsIntent); SMS • G i tin nh n MMS có ch a t p tin Media Vd: //T o tin nh n MMS Uri attached_Uri = Uri.parse("content://media/external/images/media/1"); Intent mmsIntent = new Intent(Intent.ACTION_SEND,attached_Uri); mmsIntent.putExtra("sms_body", "Please see the attached image"); mmsIntent.putExtra("address", "07912355432"); mmsIntent.putExtra(Intent.EXTRA_STREAM, attached_Uri); mmsIntent.setType("image/png"); startActivity(mmsIntent); SMS • SMS tin nh n đ c u n b i SmsManager o T ođ it ng SmsManager SmsManager smsManager = SmsManager.getDefault(); o Yêu c u quy n truy c p g i tin nh n • Vi c g i tin nh n đ c th c hi n b i ph ng th c sendTextMessage c a l p SmsManager Cú pháp: sendTextMessage( Vd: Stringdestination Address, String scAddress, String text, PendingIntent sentIntent, PendingIntent deliveryIntent) SMS • Theo dõi, xác nh n SMS tin nh n đ c g i b ng cách đ ng ký BroadcastReceiver đ l ng nghe ho t đ ng t Pending Itent đ c t o g i tin nh n o sentItent đ c g i lên tin nh n đ công hay l i c g i thành Activity.RESULT_OK SmsManager.RESULT_ERROR_GENERIC_FAILURE SmsManager.RESULT_ERROR_RADIO_OFF SmsManager.RESULT_ERROR_NULL_PDU o deliveryIntent đ đ c tin nh n c g i lên m t thi t b đích nh n SMS • Ví d v ki m sốt g i tin nh n: t o Pending Intent String SENT_SMS_ACTION = "SENT_SMS_ACTION " ; String DELIVERED_SMS_ACTION = "DELIVERED_SMS_ACTION " ; Intent sentIntent = new Intent(SENT_SMS_ACTION); PendingIntent sentPI = PendingIntent.getBroadcast(getApplicationContext(),0, sentIntent,0); Intent deliveryIntent = new Intent(DELIVERED_SMS_ACTION); PendingIntent deliverPI = PendingIntent.getBroadcast(getApplicationContext(),0, deliveryIntent,0); SMS • Ví d v ki m sốt g i tin nh n: t o Broadcast Receiver cho Send_Action registerReceiver(new BroadcastReceiver() { @Override public void onReceive(Context _context, Intent _intent) { switch (getResultCode()) { case Activity.RESULT_OK : break; case SmsManager.RESULT_ERROR_GENERIC_FAILURE: break; case SmsManager.RESULT_ERROR_RADIO_OFF : break; case SmsManager.RESULT_ERROR_NULL_PDU : break; } } },new IntentFilter(SENT_SMS_ACTION)); SMS • Ví d v ki m soát g i tin nh n: t o Broadcast Receiver cho Delivery_Action registerReceiver(new BroadcastReceiver() { @Override public void onReceive(Context _context, Intent _intent) { [ SMS delivered actions ] } }, new IntentFilter(DELIVERED_SMS_ACTION)); smsManager.sendTextMessage(sendTo, null, myMessage, sentPI, deliverPI); SMS • X lý tin nh n dài h n 160 ký t b ng ph ng th c divideMessage() sendMultipartTextMessage() o Cú pháp: sendMultipartTextMessage(Stringdestination Address, String scAddress, ArrayList parts, ArrayList sentIntents, ArrayList deliveryIntents) o Ví d : ArrayList messageArray = smsManager.divideMessage(myMessage); ArrayList sentIntents = new ArrayList(); for (int i = 0; i < messageArray.size(); i++) sentIntents.add(sentPI); smsManager.sendMultipartTextMessage(sendTo, null, messageArray sentIntents, null); SMS • G i tin nh n ch a d li u b ng m ng byte o Cú pháp: sendDataMessage(Stringdestination Address, String scAddress, short destination Port, byte[] data, PendingIntent sentIntent, PendingIntent deliveryIntent) o Ví d : Intent sentIntent = new Intent(SENT_SMS_ACTION); PendingIntent sentPI = PendingIntent.getBroadcast(getApplicationContext(), 0, sentIntent, 0); short destinationPort = 80; byte[] data = [ your data ]; smsManager.sendDataMessage(sendTo, null, destinationPort, data, sentPI, null); SMS • ng d ng nh n đ c SMS, c n đ ng ký BroadcastReceiver v i action • Cung c p quy n truy c p nh n SMS tin nh n SMS • Ví d t o Broadcast Receiver đ nh n tin nh n SMS • Làm vi c v i th m c tin nh n, c n đ ng ký quy n AndroidManifest.xml • Th c hi n truy v n đ l y thông tin v tin nh n th m c v i URI t ng ng o All : content://sms/all o Inbox : content://sms/inbox o Sent : content://sms/sent o Draft : content://sms/draft o Outbox : content://sms/outbox o Failed : content://sms/failed o Queued : content://sms/queued o Undelivered : content://sms/undelivered o Conversations : content://sms/conversations SMS • Ví d truy v n l y n i dung tin nh n Inbox