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Android includes APIs that allow applications to make use of text-to-speech (TTS) services and
allows service providers to provide implementations of TTS services.
If device implementations reporting the feature android.hardware.audio.output, they:
[C-1-1] MUST support the Android TTS framework APIs.
If device implementations support installation of third-party TTS engines, they:
[C-2-1] MUST provide user affordance to allow the user to select a TTS engine for use at
system level.
3.12. TV Input Framework
The Android Television Input Framework (TIF) simplifies the delivery of live content to Android
Television devices. TIF provides a standard API to create input modules that control Android
Television devices.
If device implementations support TIF, they:
[C-1-1] MUST declare the platform feature android.software.live_tv .
[C-1-2] MUST support all TIF APIs such that an application which uses these APIs and the
third-party TIF-based inputs service can be installed and used on the device.
3.13. Quick Settings
Android provides a Quick Settings UI component that allows quick access to frequently used or
urgently needed actions.
If device implementations include a Quick Settings UI component, they:
[C-1-1] MUST allow the user to add or remove the tiles provided through the quicksettings
APIs from a third-party app.
[C-1-2] MUST NOT automatically add a tile from a third-party app directly to the Quick
Settings.
[C-1-3] MUST display all the user-added tiles from third-party apps alongside the system-
provided quick setting tiles.
3.14. Media UI
If device implementations include the UI framework that supports third-party apps that depend on
MediaBrowser and MediaSession , they:
[C-1-1] MUST display MediaItem icons and notification icons unaltered.
[C-1-2] MUST display those items as described by MediaSession, e.g., metadata, icons,
imagery.
[C-1-3] MUST show app title.
[C-1-4] MUST have a drawer or other mechanism to present MediaBrowser hierarchy and
provide user affordance for the MediaBrowser hierarchy.
[C-1-5] MUST consider double tap of KEYCODE_HEADSETHOOK or
KEYCODE_MEDIA_PLAY_PAUSE as KEYCODE_MEDIA_NEXT for
MediaSession.Callback#onMediaButtonEvent .
3.15. Instant Apps
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Содержание
- Android 9 1
- Compatibility definition 1
- Android extensions 2
- Android library 2
- Api behavioral compatibility 2
- Api namespaces 2
- Automotive requirements 2
- Background restriction 2
- Device configurations 2
- Device types 2
- Document structure 2
- Handheld requirements 2
- Introduction 2
- Managed api compatibility 2
- Native api compatibility 2
- Runtime compatibility 2
- Soft api compatibility 2
- Software 2
- Tablet requirements 2
- Television requirements 2
- User interface compatibility 2
- Watch requirements 2
- Web compatibility 2
- Accessibility 3
- Application packaging compatibility 3
- Audio latency 3
- Audio playback 3
- Audio recording 3
- Capture for unprocessed 3
- Companion device pairing 3
- Developer options 3
- Developer tools 3
- Developer tools and options compatibility 3
- Device administration 3
- Display and graphics 3
- Hardware compatibility 3
- Heavyweight apps 3
- Instant apps 3
- Managed user support 3
- Media codecs 3
- Media ui 3
- Multimedia compatibility 3
- Musical instrument digital interface midi 3
- Network protocols 3
- Professional audio 3
- Quick settings 3
- Secure media 3
- Text to speech 3
- Tv input framework 3
- Video decoding 3
- Video encoding 3
- Cameras 4
- Data connectivity 4
- Input devices 4
- Memory and storage 4
- Pose sensor 4
- Sensors 4
- Contact us 5
- Document changelog 5
- Performance and power 5
- Security model compatibility 5
- Software compatibility testing 5
- Updatable software 5
- Document structure 6
- Introduction 6
- Requirement id 6
- Requirements by device type 6
- Device configurations 7
- Device types 7
- Handheld requirements 7
- Hardware 7
- Requirement id in section 2 7
- Multimedia 10
- Software 11
- Performance and power 12
- Security model 13
- Television requirements 13
- Hardware 14
- Multimedia 15
- Software 16
- Performance and power 17
- Hardware 18
- Multimedia 18
- Software 18
- Watch requirements 18
- Automotive requirements 19
- Hardware 19
- Performance and power 19
- Multimedia 22
- Software 22
- Performance and power 23
- Hardware 24
- Security model 24
- Software 24
- Tablet requirements 24
- Android extensions 25
- Android library 25
- Managed api compatibility 25
- Build parameters 26
- Permissions 26
- Soft api compatibility 26
- Intent compatibility 29
- Activities on secondary displays 31
- Application binary interfaces 32
- Native api compatibility 32
- Bit arm native code compatibility 33
- Browser compatibility 34
- Web compatibility 34
- Webview compatibility 34
- Api behavioral compatibility 35
- Api namespaces 36
- Background restriction 36
- Runtime compatibility 37
- Launcher home screen 39
- User interface compatibility 39
- Notifications 40
- Widgets 40
- Alerts and toasts 42
- Search 42
- Live wallpapers 43
- Themes 43
- Activity switching 44
- Input management 44
- Lock screen media control 44
- Location 45
- Multi windows 45
- Screen savers previously dreams 45
- Unicode and font 45
- Device administration 46
- Display cutout 46
- Device provisioning 47
- Managed profile support 48
- Accessibility 49
- Managed user support 49
- Text to speech 49
- Instant apps 50
- Media ui 50
- Quick settings 50
- Tv input framework 50
- Application packaging compatibility 51
- Companion device pairing 51
- Heavyweight apps 51
- Multimedia compatibility 52
- Audio decoding 53
- Audio encoding 53
- Media codecs 53
- Audio codecs details 54
- Image decoding 55
- Image encoding 55
- Image codecs details 56
- Video codecs 56
- Video codecs list 56
- Video encoding 57
- Mpeg 2 59
- Mpeg 4 59
- Video decoding 59
- H 65 hevc 60
- Audio recording 61
- Raw audio capture 61
- Capture for rerouting of playback 62
- Capture for voice recognition 62
- Audio effects 63
- Audio latency 63
- Audio output volume 63
- Audio playback 63
- Raw audio playback 63
- Network protocols 65
- Musical instrument digital interface midi 66
- Professional audio 66
- Secure media 66
- Capture for unprocessed 68
- Developer tools 69
- Developer tools and options compatibility 69
- Developer options 71
- Display and graphics 71
- Hardware compatibility 71
- Screen configuration 72
- D and 3d graphics acceleration 74
- Display metrics 74
- Screen orientation 74
- Legacy application compatibility mode 77
- Screen technology 77
- Secondary displays 77
- Input devices 78
- Keyboard 78
- Navigation keys 78
- Non touch navigation 78
- Touchscreen input 79
- Fake touch input 80
- Game controller support 81
- Remote control 82
- Sensors 82
- Accelerometer 83
- Magnetometer 84
- Gyroscope 86
- Barometer 87
- Photometer 87
- Thermometer 87
- High fidelity sensors 88
- Proximity sensor 88
- Biometric sensors 90
- Android automotive only sensors 92
- Data connectivity 93
- Pose sensor 93
- Telephony 93
- Ieee 802 1 wi fi 94
- Bluetooth 97
- Near field communications 98
- Minimum network capability 100
- Cameras 101
- Data saver 101
- Rear facing camera 101
- Secure elements 101
- Sync settings 101
- Front facing camera 102
- Camera api behavior 103
- External camera 103
- Camera orientation 104
- Memory and storage 104
- Application shared storage 105
- Minimum memory and storage 105
- Adoptable storage 106
- Usb peripheral mode 106
- Usb host mode 107
- Audio output 108
- Microphone 108
- Near ultrasound 109
- Virtual reality 110
- Virtual reality mode 110
- Virtual reality mode high performance 110
- File i o access performance 112
- Performance and power 112
- Power saving modes 112
- User experience consistency 112
- Consistent performance 113
- Power consumption accounting 113
- Permissions 114
- Security model compatibility 114
- Filesystem permissions 115
- Uid and process isolation 115
- Alternate execution environments 116
- Multi user support 116
- Premium sms warning 117
- Security features 117
- Privacy 119
- Recording 119
- Usage history 119
- Connectivity 120
- Data storage encryption 120
- Network traffic 120
- Direct boot 121
- File based encryption 121
- Device integrity 122
- Full disk encryption 122
- Keys and credentials 123
- Secure lock screen 124
- Strongbox 127
- Data deletion 128
- Safe boot mode 128
- Automotive vehicle system isolation 129
- Compatibility test suite 129
- Software compatibility testing 129
- Subscription plans 129
- Cts verifier 130
- Updatable software 130
- Changelog viewing tips 131
- Document changelog 131
- Contact us 132
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