What’s New in Shared Storage

- 2019년 7월 16일 Google I/O Extended 2019 수원
- 2019년 6월 22일 Google I/O Extended 2019 인천
위 행사들에서 발표한 자료입니다.

안드로이드 Q에서 새로운 저장소 권한 모델을 발표하였습니다. Q부터 완전히 바뀌는 안드로이드 공용 저장소 시스템을 소개합니다.

Transcript

1. What’s New in Shared Storage ੉थ޹ ߛ௼࢟۞٘ উ٘۽੉٘ ѐߊ੗ GDE Android Korea
2. ݾର 1. Storage ࠂण 2. Storage in Q 3. Storage Access Framework (SAF) 4. Scoped Mode 5. ੿ܻ
3. Storage ࠂण
4. What is SharedStorage?
5. What is SharedStorage? External Storage
6. What is SharedStorage? External Storage sdcard
7. Android 9 Storage
8. Android 9 Storage Internal Storage 1. Read / Write ӂೠ হ੉ оמ 2. জ ࢏ઁೞݶ ੷੢ࣗ ౵ੌٜ ࢎۄ૗ 3. ఋ জীࢲ Read / Write ࠛоמ
9. Android 9 Storage Internal Storage 1. Read / Write ӂೠ হ੉ оמ 2. জ ࢏ઁೞݶ ੷੢ࣗ ౵ੌٜ ࢎۄ૗ 3. ఋ জীࢲ Read / Write ࠛоמ ఋ জীࢲ ੽Ӕೞݶ উغח জ ؘ੉ఠ
10. Android 9 Storage External Storage of MINE 1. Read / Write ӂೠ হ੉ оמ 2. জ ࢏ઁೞݶ ੷੢ࣗ ౵ੌٜ ࢎۄ૗ 3. ఋ জীࢲ Read / Write оמ
11. Android 9 Storage External Storage of MINE 1. Read / Write ӂೠ হ੉ оמ 2. জ ࢏ઁೞݶ ੷੢ࣗ ౵ੌٜ ࢎۄ૗ 3. ఋ জীࢲ Read / Write оמ ఋ জীࢲ ੽Ӕ੉ ೙ਃೠ জ ؘ੉ఠ
12. Android 9 Storage External Storage of NOT MINE 1. Read / Write ӂೠ হ੉ ࠛоמ 2. জ ࢏ઁೞݶ ੷੢ࣗ ౵ੌٜ উࢎۄ૗ 3. ఋ জীࢲ Read / Write оמ Environment .getExternalStorageDirectory()
13. Android 9 Storage External Storage of NOT MINE 1. Read / Write ӂೠ হ੉ ࠛоמ 2. জ ࢏ઁೞݶ ੷੢ࣗ ౵ੌٜ উࢎۄ૗ 3. ఋ জীࢲ Read / Write оמ Environment .getExternalStorageDirectory() ఋ জ ߂ ҕਊ ؘ੉ఠ
14. 1. Internal Storage • ఋ জীࢲ ੽Ӕೞݶ উغח জ ؘ੉ఠ 2. External Storage • ఋ জীࢲ ੽Ӕ੉ ೙ਃೠ জ ؘ੉ఠ • ఋ জ ߂ ҕਊ ؘ੉ఠ Android 9 Storage
15. Android 9 Storage sdcard ী ૒੽ Read/Write 1. Internal Storage • ఋ জীࢲ ੽Ӕೞݶ উغח জ ؘ੉ఠ 2. External Storage • ఋ জীࢲ ੽Ӕ੉ ೙ਃೠ জ ؘ੉ఠ • ఋ জ ߂ ҕਊ ؘ੉ఠ
16. Storage in Q
17. Storage in Q - 3ਗ஗
18. Storage in Q - 3ਗ஗ (1) File੉ Owner Appਸ উ׮ জ ࢏ઁ द MediaStore ৻ ࣗࣘ ౵ੌ ࢏ઁ ੷੢ࣗ ӂೠ ੓যب ఋ জ੄ ౵ੌ ੽Ӕ ઁೠ
19. ఋ জ੄ App-Specific Data ੽Ӕ ࠛо ex) Storage in Q - 3ਗ஗ (2)
20. झ݃౟ೞѱ ࢎਊ੗ ؘ੉ఠ ҕਬ ౵ੌ ઙܨী ٮۄ ӂೠ ࣁ࠙ച জীࢲ ࢤࢿ/׮਍۽٘ೠ ౵ੌী ࢎਊ੗о যڃ জਵ۽ ঱ઁ ੽Ӕೞח૑ ঎ Storage in Q - 3ਗ஗ (3)
21. Storage in Q 1. Internal Storage • ӝઓҗ زੌ 2. MediaStore • ఋ জীࢲ ੽Ӕ੉ ೙ਃೠ জ ؘ੉ఠ 3. MediaStore.Downloads • ҕਊ ؘ੉ఠ. SystemPicker ా೧ࢲ ੽Ӕ.
22. Storage in Q 1. Internal Storage • ӝઓҗ زੌ 2. MediaStore • ఋ জীࢲ ੽Ӕ੉ ೙ਃೠ জ ؘ੉ఠ 3. MediaStore.Downloads • ҕਊ ؘ੉ఠ. SystemPicker ా೧ࢲ ੽Ӕ. SAF ా೧ Read/Write *Storage Access Framework
23. Storage in Q 1. Internal Storage • ӝઓҗ زੌ 3. MediaStore.Downloads • ҕਊ ؘ੉ఠ. SystemPicker ా೧ࢲ ੽Ӕ. 2. MediaStore • ఋ জীࢲ ੽Ӕ੉ ೙ਃೠ জ ؘ੉ఠ SAF ా೧ Read/Write
24. Storage in Q MediaStore 1. Read / Write ӂೠ হ੉ оמ. জҗ োѾغয ੓਺ 2. জ ࢏ઁೞݶ ౵ੌٜ উࢎۄ૗. োѾ Րয૗ 3. োѾ੉ Րয૓ MediaStoreח ఋ জ੄ MediaStore৬ ݃ଲо૑. 4. ఋ জীࢲ Read / Write द ੷੢ࣗ ӂೠ ৻ ౵ੌઙܨ ੽Ӕ ӂೠ ೙ਃ
25. Storage Access Framework (SAF) (MediaStore ׮ܖӝ)
26. ࢎਊ੗ীѱ ࣘೠ ؘ੉ఠ ׮ܲ জীѱ ࠁৈ૑ӝ ਗೞח ؘ੉ఠ MediaStore
27. • ࢎਊ੗ীѱ ഒۆਸ ઴ ࣻ ੓ח ؘ੉ఠ MediaStore ੉۠ ؘ੉ఠח উظਃ! ex) চߧই౟, झ౭ழ৬ э਷ জ ղ ܻࣗझ
28. MediaStore ׮ܖӝ - ղ জ
29. MediaStore ׮ܖӝ - ղ জ ۠ఋ੐ ӂೠ ೙ਃহ਺ !
30. Write MediaStore // Create a new image in the user's collection val values = ContentValues().apply { put(MediaStore.Images.Media.RELATIVE_PATH, “Pictures/Maryang Album/“) put(MediaStore.Images.Media.DISPLAY_NAME, name) put(MediaStore.Images.Media.MIME_TYPE, “image/jpeg") put(MediaStore.Images.Media.IS_PENDING, 1) } val resolver = context.contentResolver val collection = MediaStore.Images.Media .getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY) val item = resolver.insert(collection, values)
31. Write MediaStore ౵ੌ ࢤࢿ // Create a new image in the user's collection val values = ContentValues().apply { put(MediaStore.Images.Media.RELATIVE_PATH, “Pictures/Maryang Album/“) put(MediaStore.Images.Media.DISPLAY_NAME, name) put(MediaStore.Images.Media.MIME_TYPE, “image/jpeg") put(MediaStore.Images.Media.IS_PENDING, 1) } val resolver = context.contentResolver val collection = MediaStore.Images.Media .getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY) val item = resolver.insert(collection, values)
32. // Create a new image in the user's collection val values = ContentValues().apply { put(MediaStore.Images.Media.RELATIVE_PATH, “Pictures/Maryang Album/“) put(MediaStore.Images.Media.DISPLAY_NAME, name) put(MediaStore.Images.Media.MIME_TYPE, “image/jpeg") put(MediaStore.Images.Media.IS_PENDING, 1) } val resolver = context.contentResolver val collection = MediaStore.Images.Media .getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY) val item = resolver.insert(collection, values) Write MediaStore ౵ੌ ࢤࢿ
33. // Create a new image in the user's collection val values = ContentValues().apply { put(MediaStore.Images.Media.RELATIVE_PATH, “Pictures/Maryang Album/“) put(MediaStore.Images.Media.DISPLAY_NAME, name) put(MediaStore.Images.Media.MIME_TYPE, “image/jpeg") put(MediaStore.Images.Media.IS_PENDING, 1) } val resolver = context.contentResolver val collection = MediaStore.Images.Media .getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY) val item = resolver.insert(collection, values) Write MediaStore ౵ੌ ࢤࢿ
34. // Write bitmap into pending image output stream resolver.openOutputStream(item).use { stream -> bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream) } // Now that we're finished, reveal to other apps values.clear() values.put(MediaStore.Images.Media.IS_PENDING, 0) resolver.update(item, values, null, null) Write MediaStore ౵ੌ ੑ۱
35. Write MediaStore ౵ੌ ੑ۱ // Write bitmap into pending image output stream resolver.openOutputStream(item).use { stream -> bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream) } // Now that we're finished, reveal to other apps values.clear() values.put(MediaStore.Images.Media.IS_PENDING, 0) resolver.update(item, values, null, null)
36. MediaStore ׮ܖӝ - Write IS_PENDING 1 ౵ੌ ࢤࢿ ౵ੌ ղਊ ੑ۱ IS_PENDING 0 ౵ੌ ੷੢ ✏
37. Read MediaStore // Find images (both published and pending) val collection = getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY) val collectionWithPending = MediaStore.setIncludePending(collection) resolver.query(collectionWithPending).use { // Get a specific media item uri ContentUris.withAppendedId( collection, it.getLong(it.getColumnIndex(ImageColumns._ID)) ) }.let { // Open a specific media item resolver.openFileDescriptor(Uri.parse(it), "w").use { // ... do something } }
38. Read MediaStore // Find images (both published and pending) val collection = getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY) val collectionWithPending = MediaStore.setIncludePending(collection) resolver.query(collectionWithPending).use { // Get a specific media item uri ContentUris.withAppendedId( collection, it.getLong(it.getColumnIndex(ImageColumns._ID)) ) }.let { // Open a specific media item resolver.openFileDescriptor(Uri.parse(it), "w").use { // ... do something } }
39. Read MediaStore // Find images (both published and pending) val collection = getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY) val collectionWithPending = MediaStore.setIncludePending(collection) resolver.query(collectionWithPending).use { // Get a specific media item uri ContentUris.withAppendedId( collection, it.getLong(it.getColumnIndex(ImageColumns._ID)) ) }.let { // Open a specific media item resolver.openFileDescriptor(Uri.parse(it), "w").use { // ... do something } }
40. MediaStore ׮ܖӝ - Read Query & OpenFile
41. MediaStore ׮ܖӝ - ఋ জ
42. MediaStore ׮ܖӝ - ఋ জ • ۠ఋ੐ ӂೠ ೙ਃೣ • ӂೠ ੓ਵݶ query() оמ • Read / Writeח ӂೠ ੓যب RecoverableSecurityException ؍૗ update(), delete(), openFileDescriptor() (۠ఋ੐ ӂೠҗ ࠺तೞѱ दझమ Dialogܳ ڸਕ ౵ੌী ؀೧ Write ӂೠਸ ঳ח׮)
43. Access Other App’s MediaStore try { resolver.openFileDescriptor(Uri.parse(it), "w").use { // ... do something } } catch (e: RecoverableSecurityException) { AlertDialog.Builder(context) .setMessage(e.userMessage) .setPositiveButton(e.userAction.title) { try { e.userAction.actionIntent.send() } catch (ignored: PendingIntent.CanceledException) { } } .setNegativeButton("ஂࣗ", null) .show() }
44. Access Other App’s MediaStore try { resolver.openFileDescriptor(Uri.parse(it), "w").use { // ... do something } } catch (e: RecoverableSecurityException) { AlertDialog.Builder(context) .setMessage(e.userMessage) .setPositiveButton(e.userAction.title) { try { e.userAction.actionIntent.send() } catch (ignored: PendingIntent.CanceledException) { } } .setNegativeButton("ஂࣗ", null) .show() }
45. Access Other App’s MediaStore try { resolver.openFileDescriptor(Uri.parse(it), "w").use { // ... do something } } catch (e: RecoverableSecurityException) { AlertDialog.Builder(context) .setMessage(e.userMessage) .setPositiveButton(e.userAction.title) { try { e.userAction.actionIntent.send() } catch (ignored: PendingIntent.CanceledException) { } } .setNegativeButton("ஂࣗ", null) .show() }
46. Access Other App’s MediaStore try { resolver.openFileDescriptor(Uri.parse(it), "w").use { // ... do something } } catch (e: RecoverableSecurityException) { AlertDialog.Builder(context) .setMessage(e.userMessage) .setPositiveButton(e.userAction.title) { try { e.userAction.actionIntent.send() } catch (ignored: PendingIntent.CanceledException) { } } .setNegativeButton("ஂࣗ", null) .show() }
47. Access Other App’s MediaStore try { resolver.openFileDescriptor(Uri.parse(it), "w").use { // ... do something } } catch (e: RecoverableSecurityException) { AlertDialog.Builder(context) .setMessage(e.userMessage) .setPositiveButton(e.userAction.title) { try { e.userAction.actionIntent.send() } catch (ignored: PendingIntent.CanceledException) { } } .setNegativeButton("ஂࣗ", null) .show() } അ੤ ߬ఋীࢲח ੜ ز੘ೞ૑ ঋ਺
48. MediaStore Deprecated MediaStore.LATITUDE MediaStore.LONGITUDE Location Use ExifInterface
49. MediaStore.LOCATION Deprecated - ExifInterface
50. Scoped Mode
51. ౵ੌ҃۽ /sdcard/ ੽Ӕࠛо Scoped Mode Environment .getExternalStorageDirectory() জ ౵ੌ ࢞٘߅झ Ѻܻ SAF۽ MediaStore ੽Ӕ
52. Intent ACTION_OPEN_DOCUMENT ACTION_CREATE_DOCUMENT Scoped Mode - Beyond Local ҕਊҕр(MediaStore.Downloads) Read
53. ҕਊҕр ੽Ӕ startActivityForResult( Intent(Intent.ACTION_OPEN_DOCUMENT), REQUEST_CODE_READ ) override fun onActivityResult() { val result: Uri = resultIntent.data val pickedFile: DocumentFile = DocumentFile.fromSingleUri(this, result) }
54. Scoped Mode - Beyond Local MediaStore.Downloads ӂೠ হ੉ оמ ҕਊҕр(MediaStore.Downloads) Write
55. Write MediaStore.Downloads // Create a new image in the user's collection val values = ContentValues().apply { put(MediaStore.Images.Media.DISPLAY_NAME, name) put(MediaStore.Images.Media.MIME_TYPE, “image/jpeg") put(MediaStore.Images.Media.IS_PENDING, 1) } val resolver = context.contentResolver val collection = MediaStore.Downloads .getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY) val item = resolver.insert(collection, values)
56. ղ֙ࠗఠ Target SDK সؘ੉౟ ೙ࣻ Ӓٸө૑ ੐द Opt Out оמ Scoped Mode - Opt Out
57. Scoped Mode Storage ੐द Opt Out
58. Scoped Mode ੢੼
59. Scoped Mode ੢੼
60. ౵ੌҗ Owner Appਸ োѾೣਵ۽ॄ ࠁৈ઴ ౵ੌҗ ࠁৈ઱૑ ঋਸ ౵ੌਸ ݺഛ൤ ҳ࠙ Scoped Mode ੢੼
61. ੿ܻ
62. Android 9 Storage sdcard ী ૒੽ Read/Write 1. Internal Storage • ఋ জীࢲ ੽Ӕೞݶ উغח জ ؘ੉ఠ 2. External Storage • ఋ জীࢲ ੽Ӕ੉ ೙ਃೠ জ ؘ੉ఠ • ఋ জ ߂ ҕਊ ؘ੉ఠ
63. Storage in Q 1. Internal Storage • ӝઓҗ زੌ 2. MediaStore • ఋ জীࢲ ੽Ӕ੉ ೙ਃೠ জ ؘ੉ఠ 3. MediaStore.Downloads • ҕਊ ؘ੉ఠ. SystemPicker ా೧ࢲ ੽Ӕ. SAF ా೧ Read/Write *Storage Access Framework
64. জ ղীࢲ݅ ࢎਊೠ׮ݶ? Internal Storage۽ ޷ܻ ৤ѹفࣁਃ ݃੉Ӓۨ੉࣌ ఋ জ ౵ੌী ੽Ӕ੉ ೙ਃ೧ਃ! SAF۽ ੽Ӕೞࣁਃ ҅ࣘ ੽Ӕ೧ঠ ೠ׮ݶ Internal Storage۽ ৤ѹفࣁਃ ఋ জী ࠁৈઉঠ ೧ਃ Ӓ؀۽ فযب ҡଳইਃ (ղо ੽Ӕೡ ٸ ೠߣ ӂೠਸ ਃ୒ೡ ࣻ ੓਺) ✅ ✅ ✅
65. ԙ ز੘ਸ Qীࢲ ഛੋೞࣁਃ! ݃੉Ӓۨ੉࣌ &
66. Reference Google I/O 2019 Shared Storage ৔࢚ Google ޙࢲ Android Q privacy change: Scoped storage নଲࢳש Scoped Storage ࠶۽Ӓ উݺ਌ש Shared Storage ߊ಴੗ܐ ࢠ೒௏٘ ۨನ૑షܻ
67. хࢎ೤פ׮! ੉थ޹ ߛ௼࢟۞٘ উ٘۽੉٘ ѐߊ੗ GDE Android Korea