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Device implementations:
[C-0-3] MUST support the TextureView API, and MUST exhibit consistent behavior with
the upstream Android implementation.
7.1.4.5 Wide-gamut Displays
If device implementations claim support for wide-gamut displays through
Configuration.isScreenWideColorGamut() , they:
[C-1-1] MUST have a color-calibrated display.
[C-1-2] MUST have a display whose gamut covers the sRGB color gamut entirely in CIE
1931 xyY space.
[C-1-3] MUST have a display whose gamut has an area of at least 90% of DCI-P3 in CIE
1931 xyY space.
[C-1-4] MUST support OpenGL ES 3.1 or 3.2 and report it properly.
[C-1-5] MUST advertise support for the EGL_KHR_no_config_context ,
EGL_EXT_pixel_format_float , EGL_KHR_gl_colorspace , EGL_EXT_gl_colorspace_scrgb ,
EGL_EXT_gl_colorspace_scrgb_linear , EGL_EXT_gl_colorspace_display_p3 , and
EGL_KHR_gl_colorspace_display_p3 extensions.
[SR] Are STRONGLY RECOMMENDED to support GL_EXT_sRGB .
Conversely, if device implementations do not support wide-gamut displays, they:
[C-2-1] SHOULD cover 100% or more of sRGB in CIE 1931 xyY space, although the screen
color gamut is undefined.
7.1.5. Legacy Application Compatibility Mode
Android specifies a “compatibility mode” in which the framework operates in a 'normal' screen size
equivalent (320dp width) mode for the benefit of legacy applications not developed for old versions
of Android that pre-date screen-size independence.
7.1.6. Screen Technology
The Android platform includes APIs that allow applications to render rich graphics to the display.
Devices MUST support all of these APIs as defined by the Android SDK unless specifically allowed in
this document.
Device implementations:
[C-0-1] MUST support displays capable of rendering 16-bit color graphics.
SHOULD support displays capable of 24-bit color graphics.
[C-0-2] MUST support displays capable of rendering animations.
[C-0-3] MUST use the display technology that have a pixel aspect ratio (PAR) between 0.9
and 1.15. That is, the pixel aspect ratio MUST be near square (1.0) with a 10 ~ 15%
tolerance.
7.1.7. Secondary Displays
Android includes support for secondary display to enable media sharing capabilities and developer
APIs for accessing external displays.
If device implementations support an external display either via a wired, wireless, or an embedded
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Содержание
- Compatibility definition p.1
- Android 9 p.1
- Device types p.2
- Device configurations p.2
- Background restriction p.2
- Web compatibility p.2
- Automotive requirements p.2
- Watch requirements p.2
- Api namespaces p.2
- User interface compatibility p.2
- Api behavioral compatibility p.2
- Television requirements p.2
- Android library p.2
- Tablet requirements p.2
- Android extensions p.2
- Software p.2
- Soft api compatibility p.2
- Runtime compatibility p.2
- Native api compatibility p.2
- Managed api compatibility p.2
- Introduction p.2
- Handheld requirements p.2
- Document structure p.2
- Multimedia compatibility p.3
- Audio latency p.3
- Media ui p.3
- Application packaging compatibility p.3
- Media codecs p.3
- Accessibility p.3
- Managed user support p.3
- Instant apps p.3
- Heavyweight apps p.3
- Hardware compatibility p.3
- Video encoding p.3
- Display and graphics p.3
- Video decoding p.3
- Device administration p.3
- Tv input framework p.3
- Developer tools and options compatibility p.3
- Text to speech p.3
- Developer tools p.3
- Secure media p.3
- Developer options p.3
- Quick settings p.3
- Companion device pairing p.3
- Professional audio p.3
- Capture for unprocessed p.3
- Network protocols p.3
- Audio recording p.3
- Musical instrument digital interface midi p.3
- Audio playback p.3
- Sensors p.4
- Pose sensor p.4
- Memory and storage p.4
- Input devices p.4
- Data connectivity p.4
- Cameras p.4
- Contact us p.5
- Updatable software p.5
- Software compatibility testing p.5
- Security model compatibility p.5
- Performance and power p.5
- Document changelog p.5
- Requirements by device type p.6
- Requirement id p.6
- Introduction p.6
- Document structure p.6
- Requirement id in section 2 p.7
- Hardware p.7
- Handheld requirements p.7
- Device types p.7
- Device configurations p.7
- Multimedia p.10
- Software p.11
- Performance and power p.12
- Television requirements p.13
- Security model p.13
- Hardware p.14
- Multimedia p.15
- Software p.16
- Performance and power p.17
- Watch requirements p.18
- Software p.18
- Multimedia p.18
- Hardware p.18
- Performance and power p.19
- Hardware p.19
- Automotive requirements p.19
- Software p.22
- Multimedia p.22
- Performance and power p.23
- Tablet requirements p.24
- Software p.24
- Security model p.24
- Hardware p.24
- Managed api compatibility p.25
- Android library p.25
- Android extensions p.25
- Soft api compatibility p.26
- Permissions p.26
- Build parameters p.26
- Intent compatibility p.29
- Activities on secondary displays p.31
- Application binary interfaces p.32
- Native api compatibility p.32
- Bit arm native code compatibility p.33
- Webview compatibility p.34
- Web compatibility p.34
- Browser compatibility p.34
- Api behavioral compatibility p.35
- Background restriction p.36
- Api namespaces p.36
- Runtime compatibility p.37
- User interface compatibility p.39
- Launcher home screen p.39
- Widgets p.40
- Notifications p.40
- Search p.42
- Alerts and toasts p.42
- Themes p.43
- Live wallpapers p.43
- Activity switching p.44
- Lock screen media control p.44
- Input management p.44
- Unicode and font p.45
- Screen savers previously dreams p.45
- Multi windows p.45
- Location p.45
- Display cutout p.46
- Device administration p.46
- Device provisioning p.47
- Managed profile support p.48
- Text to speech p.49
- Managed user support p.49
- Accessibility p.49
- Quick settings p.50
- Media ui p.50
- Instant apps p.50
- Tv input framework p.50
- Heavyweight apps p.51
- Companion device pairing p.51
- Application packaging compatibility p.51
- Multimedia compatibility p.52
- Media codecs p.53
- Audio encoding p.53
- Audio decoding p.53
- Audio codecs details p.54
- Image encoding p.55
- Image decoding p.55
- Video codecs list p.56
- Video codecs p.56
- Image codecs details p.56
- Video encoding p.57
- Mpeg 2 p.59
- Video decoding p.59
- Mpeg 4 p.59
- H 65 hevc p.60
- Raw audio capture p.61
- Audio recording p.61
- Capture for voice recognition p.62
- Capture for rerouting of playback p.62
- Raw audio playback p.63
- Audio playback p.63
- Audio output volume p.63
- Audio latency p.63
- Audio effects p.63
- Network protocols p.65
- Secure media p.66
- Professional audio p.66
- Musical instrument digital interface midi p.66
- Capture for unprocessed p.68
- Developer tools and options compatibility p.69
- Developer tools p.69
- Hardware compatibility p.71
- Display and graphics p.71
- Developer options p.71
- Screen configuration p.72
- Screen orientation p.74
- Display metrics p.74
- D and 3d graphics acceleration p.74
- Secondary displays p.77
- Screen technology p.77
- Legacy application compatibility mode p.77
- Navigation keys p.78
- Keyboard p.78
- Input devices p.78
- Non touch navigation p.78
- Touchscreen input p.79
- Fake touch input p.80
- Game controller support p.81
- Sensors p.82
- Remote control p.82
- Accelerometer p.83
- Magnetometer p.84
- Gyroscope p.86
- Thermometer p.87
- Photometer p.87
- Barometer p.87
- Proximity sensor p.88
- High fidelity sensors p.88
- Biometric sensors p.90
- Android automotive only sensors p.92
- Telephony p.93
- Pose sensor p.93
- Data connectivity p.93
- Ieee 802 1 wi fi p.94
- Bluetooth p.97
- Near field communications p.98
- Minimum network capability p.100
- Sync settings p.101
- Secure elements p.101
- Rear facing camera p.101
- Data saver p.101
- Cameras p.101
- Front facing camera p.102
- External camera p.103
- Camera api behavior p.103
- Camera orientation p.104
- Memory and storage p.104
- Minimum memory and storage p.105
- Application shared storage p.105
- Usb peripheral mode p.106
- Adoptable storage p.106
- Usb host mode p.107
- Microphone p.108
- Audio output p.108
- Near ultrasound p.109
- Virtual reality mode high performance p.110
- Virtual reality mode p.110
- Virtual reality p.110
- User experience consistency p.112
- Power saving modes p.112
- Performance and power p.112
- File i o access performance p.112
- Power consumption accounting p.113
- Consistent performance p.113
- Security model compatibility p.114
- Permissions p.114
- Uid and process isolation p.115
- Filesystem permissions p.115
- Multi user support p.116
- Alternate execution environments p.116
- Security features p.117
- Premium sms warning p.117
- Usage history p.119
- Recording p.119
- Privacy p.119
- Network traffic p.120
- Data storage encryption p.120
- Connectivity p.120
- File based encryption p.121
- Direct boot p.121
- Full disk encryption p.122
- Device integrity p.122
- Keys and credentials p.123
- Secure lock screen p.124
- Strongbox p.127
- Safe boot mode p.128
- Data deletion p.128
- Subscription plans p.129
- Software compatibility testing p.129
- Compatibility test suite p.129
- Automotive vehicle system isolation p.129
- Updatable software p.130
- Cts verifier p.130
- Changelog viewing tips p.131
- Document changelog p.131
- Contact us p.132
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