提示强制横竖屏功能实现实现竖屏应用也可以横屏显示文章目录[TOC](文章目录)前言一、需求二、相关资料三、修改文件四、实现方案属性配置作为一个开关实现屏幕方向控制方式-业务逻辑五、实际能够实现的效果实现竖屏应用也可以横屏显示做菜单功能选项-拓展丰富功能总结前言强制横竖屏什么意思呢就是字面意思强制让屏幕横屏显示、竖屏显示。 这样的好处就是 解决了竖屏应用App 也可以横屏显示一、需求让应用可以随着GSensor 屏幕旋转二实现应用的横竖屏显示。如下横屏状态下同一个应用 讯飞输入法显示的两种不同状态修改前和修改后所以对于很多应用在AndroidMenifest.xml 中配置属性android:screenOrientationport,或者android:screenOrientationlandscape都是无效的因为我们的最终目标是随GSensor 方向不由App 配置决定。二、相关资料这里有关联的关联性资料针对不同的需求相关知识点有了解的必要虽然如下知识点跟这里没有什么关系但是都是关联性的需求与知识点有掌握的必要针对不同的需求。MTK-Android13-假横屏-竖屏开机解决各类APP USB相机适配问题 : 假横屏开机案例系统起来后横屏显示或者跟随GSensor 方向显示系统实现屏幕横竖屏-180非180横竖屏切换配置 MTK、RK UBoot、Kernel、屏幕方向旋转案例MTKAndroid12-13-实现WIFI-蓝牙默认打开-自动旋转屏幕管理默认关闭-屏幕超时默认30分钟-屏幕旋转方向 MTK 自动旋转屏幕相关设置与默认三、修改文件frameworks/base/services/core/java/com/android/server/wm/DisplayRotation.java四、实现方案属性配置作为一个开关可以配置一个属性方便自己拓展功能比如属性persist.fise.rotate.lockpersist.fise.rotate.lock1\实现屏幕方向控制方式-业务逻辑路径frameworks/base/services/core/java/com/android/server/wm/DisplayRotation.java在rotationForOrientation方法中添加自己的业务逻辑判断mFiseRotationLockSystemProperties.get(persist.fise.rotate.lock,0);//Slog.d(wfc,mFiseRotationLock mFiseRotationLock);if(mFiseRotationLock.equals(0)){}elseif(mFiseRotationLock.equals(1)){returnsensorRotation;}elseif(mFiseRotationLock.equals(2)){returnmLandscapeRotation;}elseif(mFiseRotationLock.equals(3)){returnmPortraitRotation;}我把源码rotationForOrientation方法贴出来方便后续大家自己研究/** * Given an orientation constant, returns the appropriate surface rotation, taking into account * sensors, docking mode, rotation lock, and other factors. * * param orientation An orientation constant, such as * {link ActivityInfo#SCREEN_ORIENTATION_LANDSCAPE}. * param lastRotation The most recently used rotation. * return The surface rotation to use. */Surface.RotationintrotationForOrientation(ScreenOrientationintorientation,Surface.RotationintlastRotation){ProtoLog.v(WM_DEBUG_ORIENTATION,rotationForOrientation(orient%s (%d), last%s (%d)); user%s (%d) %s,ActivityInfo.screenOrientationToString(orientation),orientation,Surface.rotationToString(lastRotation),lastRotation,Surface.rotationToString(mUserRotation),mUserRotation,mUserRotationModeWindowManagerPolicy.USER_ROTATION_LOCKED?USER_ROTATION_LOCKED:);if(isFixedToUserRotation()){returnmUserRotation;}Surface.RotationintsensorRotationmOrientationListener!null?mOrientationListener.getProposedRotation()// may be -1:-1;if(mFoldController!nullmFoldController.shouldIgnoreSensorRotation()){sensorRotation-1;}if(mDeviceStateController.shouldReverseRotationDirectionAroundZAxis(mDisplayContent)){sensorRotationRotationUtils.reverseRotationDirectionAroundZAxis(sensorRotation);}mLastSensorRotationsensorRotation;if(sensorRotation0){sensorRotationlastRotation;}finalintlidStatemDisplayPolicy.getLidState();finalintdockModemDisplayPolicy.getDockMode();finalbooleanhdmiPluggedmDisplayPolicy.isHdmiPlugged();finalbooleancarDockEnablesAccelerometermDisplayPolicy.isCarDockEnablesAccelerometer();finalbooleandeskDockEnablesAccelerometermDisplayPolicy.isDeskDockEnablesAccelerometer();Surface.RotationfinalintpreferredRotation;if(!isDefaultDisplay){// For secondary displays we ignore things like displays sensors, docking mode and// rotation lock, and always prefer user rotation.preferredRotationmUserRotation;}elseif(lidStateLID_OPENmLidOpenRotation0){// Ignore sensor when lid switch is open and rotation is forced.preferredRotationmLidOpenRotation;}elseif(dockModeIntent.EXTRA_DOCK_STATE_CAR(carDockEnablesAccelerometer||mCarDockRotation0)){// Ignore sensor when in car dock unless explicitly enabled.// This case can override the behavior of NOSENSOR, and can also// enable 180 degree rotation while docked.preferredRotationcarDockEnablesAccelerometer?sensorRotation:mCarDockRotation;}elseif((dockModeIntent.EXTRA_DOCK_STATE_DESK||dockModeIntent.EXTRA_DOCK_STATE_LE_DESK||dockModeIntent.EXTRA_DOCK_STATE_HE_DESK)(deskDockEnablesAccelerometer||mDeskDockRotation0)!(orientationActivityInfo.SCREEN_ORIENTATION_LOCKED||orientationActivityInfo.SCREEN_ORIENTATION_NOSENSOR)){// Ignore sensor when in desk dock unless explicitly enabled.// This case can enable 180 degree rotation while docked.preferredRotationdeskDockEnablesAccelerometer?sensorRotation:mDeskDockRotation;}elseif(hdmiPluggedmDemoHdmiRotationLock){// Ignore sensor when plugged into HDMI when demo HDMI rotation lock enabled.// Note that the dock orientation overrides the HDMI orientation.preferredRotationmDemoHdmiRotation;}elseif(hdmiPluggeddockModeIntent.EXTRA_DOCK_STATE_UNDOCKEDmUndockedHdmiRotation0){// Ignore sensor when plugged into HDMI and an undocked orientation has// been specified in the configuration (only for legacy devices without// full multi-display support).// Note that the dock orientation overrides the HDMI orientation.preferredRotationmUndockedHdmiRotation;}elseif(mDemoRotationLock){// Ignore sensor when demo rotation lock is enabled.// Note that the dock orientation and HDMI rotation lock override this.preferredRotationmDemoRotation;}elseif(mDisplayPolicy.isPersistentVrModeEnabled()){// While in VR, apps always prefer a portrait rotation. This does not change// any apps that explicitly set landscape, but does cause sensors be ignored,// and ignored any orientation lock that the user has set (this conditional// should remain above the ORIENTATION_LOCKED conditional below).preferredRotationmPortraitRotation;}elseif(orientationActivityInfo.SCREEN_ORIENTATION_LOCKED){// Application just wants to remain locked in the last rotation.preferredRotationlastRotation;}elseif(!mSupportAutoRotation){if(mFixedToUserRotationIWindowManager.FIXED_TO_USER_ROTATION_IF_NO_AUTO_ROTATION){preferredRotationmUserRotation;}else{// If we dont support auto-rotation then bail out here and ignore// the sensor and any rotation lock settings.preferredRotation-1;}}elseif(((mUserRotationModeWindowManagerPolicy.USER_ROTATION_FREE||isTabletopAutoRotateOverrideEnabled())(orientationActivityInfo.SCREEN_ORIENTATION_USER||orientationActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED||orientationActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE||orientationActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT||orientationActivityInfo.SCREEN_ORIENTATION_FULL_USER))||orientationActivityInfo.SCREEN_ORIENTATION_SENSOR||orientationActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR||orientationActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE||orientationActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT){// Otherwise, use sensor only if requested by the application or enabled// by default for USER or UNSPECIFIED modes. Does not apply to NOSENSOR.if(sensorRotation!Surface.ROTATION_180||getAllowAllRotations()ALLOW_ALL_ROTATIONS_ENABLED||orientationActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR||orientationActivityInfo.SCREEN_ORIENTATION_FULL_USER){preferredRotationsensorRotation;}else{preferredRotationlastRotation;}}elseif(mUserRotationModeWindowManagerPolicy.USER_ROTATION_LOCKEDorientation!ActivityInfo.SCREEN_ORIENTATION_NOSENSORorientation!ActivityInfo.SCREEN_ORIENTATION_LANDSCAPEorientation!ActivityInfo.SCREEN_ORIENTATION_PORTRAITorientation!ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPEorientation!ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT){// Apply rotation lock. Does not apply to NOSENSOR or specific rotations.// The idea is that the user rotation expresses a weak preference for the direction// of gravity and as NOSENSOR is never affected by gravity, then neither should// NOSENSOR be affected by rotation lock (although it will be affected by docks).// Also avoid setting user rotation when app has preference over one particular rotation// to avoid leaving the rotation to the reverse of it which has the compatible// orientation, but isnt what app wants, when the user rotation is the reverse of the// preferred rotation.preferredRotationmUserRotation;}else{// No overriding preference.// We will do exactly what the application asked us to do.preferredRotation-1;}//huanghb addmFiseRotationLockSystemProperties.get(persist.fise.rotate.lock,0);//Slog.d(huanghb,mFiseRotationLock mFiseRotationLock);if(mFiseRotationLock.equals(0)){//huanghb}elseif(mFiseRotationLock.equals(1)){returnsensorRotation;}elseif(mFiseRotationLock.equals(2)){returnmLandscapeRotation;}elseif(mFiseRotationLock.equals(3)){returnmPortraitRotation;}//huanghb endswitch(orientation){caseActivityInfo.SCREEN_ORIENTATION_PORTRAIT:// Return portrait unless overridden.if(isAnyPortrait(preferredRotation)){returnpreferredRotation;}returnmPortraitRotation;caseActivityInfo.SCREEN_ORIENTATION_LANDSCAPE:// Return landscape unless overridden.if(isLandscapeOrSeascape(preferredRotation)){returnpreferredRotation;}returnmLandscapeRotation;caseActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT:// Return reverse portrait unless overridden.if(isAnyPortrait(preferredRotation)){returnpreferredRotation;}returnmUpsideDownRotation;caseActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE:// Return seascape unless overridden.if(isLandscapeOrSeascape(preferredRotation)){returnpreferredRotation;}returnmSeascapeRotation;caseActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE:caseActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE:// Return either landscape rotation.if(isLandscapeOrSeascape(preferredRotation)){returnpreferredRotation;}if(isLandscapeOrSeascape(lastRotation)){returnlastRotation;}returnmLandscapeRotation;caseActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT:caseActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT:// Return either portrait rotation.if(isAnyPortrait(preferredRotation)){returnpreferredRotation;}if(isAnyPortrait(lastRotation)){returnlastRotation;}returnmPortraitRotation;default:// For USER, UNSPECIFIED, NOSENSOR, SENSOR and FULL_SENSOR,// just return the preferred orientation we already calculated.if(preferredRotation0){returnpreferredRotation;}returnSurface.ROTATION_0;}}五、实际能够实现的效果实现竖屏应用也可以横屏显示如上讯飞语音效果竖屏应用直接横屏显示。常见场景车载、TV、PC模式、桌面模式忽略APP方向请求做菜单功能选项-拓展丰富功能如下可以实现的基本需求总结这里只是一个案例最基本需求就是让竖屏应用也可以横屏显示强制横竖屏在大多数平板、车载、KTV中是最基本的需求需要掌握这里没有研究源码有兴趣的可以了解一下源码很有意思的。
RK3568-Android15-强制横竖屏-默认App应用界面显示方向-屏幕显示方向跟随Sensor旋转
提示强制横竖屏功能实现实现竖屏应用也可以横屏显示文章目录[TOC](文章目录)前言一、需求二、相关资料三、修改文件四、实现方案属性配置作为一个开关实现屏幕方向控制方式-业务逻辑五、实际能够实现的效果实现竖屏应用也可以横屏显示做菜单功能选项-拓展丰富功能总结前言强制横竖屏什么意思呢就是字面意思强制让屏幕横屏显示、竖屏显示。 这样的好处就是 解决了竖屏应用App 也可以横屏显示一、需求让应用可以随着GSensor 屏幕旋转二实现应用的横竖屏显示。如下横屏状态下同一个应用 讯飞输入法显示的两种不同状态修改前和修改后所以对于很多应用在AndroidMenifest.xml 中配置属性android:screenOrientationport,或者android:screenOrientationlandscape都是无效的因为我们的最终目标是随GSensor 方向不由App 配置决定。二、相关资料这里有关联的关联性资料针对不同的需求相关知识点有了解的必要虽然如下知识点跟这里没有什么关系但是都是关联性的需求与知识点有掌握的必要针对不同的需求。MTK-Android13-假横屏-竖屏开机解决各类APP USB相机适配问题 : 假横屏开机案例系统起来后横屏显示或者跟随GSensor 方向显示系统实现屏幕横竖屏-180非180横竖屏切换配置 MTK、RK UBoot、Kernel、屏幕方向旋转案例MTKAndroid12-13-实现WIFI-蓝牙默认打开-自动旋转屏幕管理默认关闭-屏幕超时默认30分钟-屏幕旋转方向 MTK 自动旋转屏幕相关设置与默认三、修改文件frameworks/base/services/core/java/com/android/server/wm/DisplayRotation.java四、实现方案属性配置作为一个开关可以配置一个属性方便自己拓展功能比如属性persist.fise.rotate.lockpersist.fise.rotate.lock1\实现屏幕方向控制方式-业务逻辑路径frameworks/base/services/core/java/com/android/server/wm/DisplayRotation.java在rotationForOrientation方法中添加自己的业务逻辑判断mFiseRotationLockSystemProperties.get(persist.fise.rotate.lock,0);//Slog.d(wfc,mFiseRotationLock mFiseRotationLock);if(mFiseRotationLock.equals(0)){}elseif(mFiseRotationLock.equals(1)){returnsensorRotation;}elseif(mFiseRotationLock.equals(2)){returnmLandscapeRotation;}elseif(mFiseRotationLock.equals(3)){returnmPortraitRotation;}我把源码rotationForOrientation方法贴出来方便后续大家自己研究/** * Given an orientation constant, returns the appropriate surface rotation, taking into account * sensors, docking mode, rotation lock, and other factors. * * param orientation An orientation constant, such as * {link ActivityInfo#SCREEN_ORIENTATION_LANDSCAPE}. * param lastRotation The most recently used rotation. * return The surface rotation to use. */Surface.RotationintrotationForOrientation(ScreenOrientationintorientation,Surface.RotationintlastRotation){ProtoLog.v(WM_DEBUG_ORIENTATION,rotationForOrientation(orient%s (%d), last%s (%d)); user%s (%d) %s,ActivityInfo.screenOrientationToString(orientation),orientation,Surface.rotationToString(lastRotation),lastRotation,Surface.rotationToString(mUserRotation),mUserRotation,mUserRotationModeWindowManagerPolicy.USER_ROTATION_LOCKED?USER_ROTATION_LOCKED:);if(isFixedToUserRotation()){returnmUserRotation;}Surface.RotationintsensorRotationmOrientationListener!null?mOrientationListener.getProposedRotation()// may be -1:-1;if(mFoldController!nullmFoldController.shouldIgnoreSensorRotation()){sensorRotation-1;}if(mDeviceStateController.shouldReverseRotationDirectionAroundZAxis(mDisplayContent)){sensorRotationRotationUtils.reverseRotationDirectionAroundZAxis(sensorRotation);}mLastSensorRotationsensorRotation;if(sensorRotation0){sensorRotationlastRotation;}finalintlidStatemDisplayPolicy.getLidState();finalintdockModemDisplayPolicy.getDockMode();finalbooleanhdmiPluggedmDisplayPolicy.isHdmiPlugged();finalbooleancarDockEnablesAccelerometermDisplayPolicy.isCarDockEnablesAccelerometer();finalbooleandeskDockEnablesAccelerometermDisplayPolicy.isDeskDockEnablesAccelerometer();Surface.RotationfinalintpreferredRotation;if(!isDefaultDisplay){// For secondary displays we ignore things like displays sensors, docking mode and// rotation lock, and always prefer user rotation.preferredRotationmUserRotation;}elseif(lidStateLID_OPENmLidOpenRotation0){// Ignore sensor when lid switch is open and rotation is forced.preferredRotationmLidOpenRotation;}elseif(dockModeIntent.EXTRA_DOCK_STATE_CAR(carDockEnablesAccelerometer||mCarDockRotation0)){// Ignore sensor when in car dock unless explicitly enabled.// This case can override the behavior of NOSENSOR, and can also// enable 180 degree rotation while docked.preferredRotationcarDockEnablesAccelerometer?sensorRotation:mCarDockRotation;}elseif((dockModeIntent.EXTRA_DOCK_STATE_DESK||dockModeIntent.EXTRA_DOCK_STATE_LE_DESK||dockModeIntent.EXTRA_DOCK_STATE_HE_DESK)(deskDockEnablesAccelerometer||mDeskDockRotation0)!(orientationActivityInfo.SCREEN_ORIENTATION_LOCKED||orientationActivityInfo.SCREEN_ORIENTATION_NOSENSOR)){// Ignore sensor when in desk dock unless explicitly enabled.// This case can enable 180 degree rotation while docked.preferredRotationdeskDockEnablesAccelerometer?sensorRotation:mDeskDockRotation;}elseif(hdmiPluggedmDemoHdmiRotationLock){// Ignore sensor when plugged into HDMI when demo HDMI rotation lock enabled.// Note that the dock orientation overrides the HDMI orientation.preferredRotationmDemoHdmiRotation;}elseif(hdmiPluggeddockModeIntent.EXTRA_DOCK_STATE_UNDOCKEDmUndockedHdmiRotation0){// Ignore sensor when plugged into HDMI and an undocked orientation has// been specified in the configuration (only for legacy devices without// full multi-display support).// Note that the dock orientation overrides the HDMI orientation.preferredRotationmUndockedHdmiRotation;}elseif(mDemoRotationLock){// Ignore sensor when demo rotation lock is enabled.// Note that the dock orientation and HDMI rotation lock override this.preferredRotationmDemoRotation;}elseif(mDisplayPolicy.isPersistentVrModeEnabled()){// While in VR, apps always prefer a portrait rotation. This does not change// any apps that explicitly set landscape, but does cause sensors be ignored,// and ignored any orientation lock that the user has set (this conditional// should remain above the ORIENTATION_LOCKED conditional below).preferredRotationmPortraitRotation;}elseif(orientationActivityInfo.SCREEN_ORIENTATION_LOCKED){// Application just wants to remain locked in the last rotation.preferredRotationlastRotation;}elseif(!mSupportAutoRotation){if(mFixedToUserRotationIWindowManager.FIXED_TO_USER_ROTATION_IF_NO_AUTO_ROTATION){preferredRotationmUserRotation;}else{// If we dont support auto-rotation then bail out here and ignore// the sensor and any rotation lock settings.preferredRotation-1;}}elseif(((mUserRotationModeWindowManagerPolicy.USER_ROTATION_FREE||isTabletopAutoRotateOverrideEnabled())(orientationActivityInfo.SCREEN_ORIENTATION_USER||orientationActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED||orientationActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE||orientationActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT||orientationActivityInfo.SCREEN_ORIENTATION_FULL_USER))||orientationActivityInfo.SCREEN_ORIENTATION_SENSOR||orientationActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR||orientationActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE||orientationActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT){// Otherwise, use sensor only if requested by the application or enabled// by default for USER or UNSPECIFIED modes. Does not apply to NOSENSOR.if(sensorRotation!Surface.ROTATION_180||getAllowAllRotations()ALLOW_ALL_ROTATIONS_ENABLED||orientationActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR||orientationActivityInfo.SCREEN_ORIENTATION_FULL_USER){preferredRotationsensorRotation;}else{preferredRotationlastRotation;}}elseif(mUserRotationModeWindowManagerPolicy.USER_ROTATION_LOCKEDorientation!ActivityInfo.SCREEN_ORIENTATION_NOSENSORorientation!ActivityInfo.SCREEN_ORIENTATION_LANDSCAPEorientation!ActivityInfo.SCREEN_ORIENTATION_PORTRAITorientation!ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPEorientation!ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT){// Apply rotation lock. Does not apply to NOSENSOR or specific rotations.// The idea is that the user rotation expresses a weak preference for the direction// of gravity and as NOSENSOR is never affected by gravity, then neither should// NOSENSOR be affected by rotation lock (although it will be affected by docks).// Also avoid setting user rotation when app has preference over one particular rotation// to avoid leaving the rotation to the reverse of it which has the compatible// orientation, but isnt what app wants, when the user rotation is the reverse of the// preferred rotation.preferredRotationmUserRotation;}else{// No overriding preference.// We will do exactly what the application asked us to do.preferredRotation-1;}//huanghb addmFiseRotationLockSystemProperties.get(persist.fise.rotate.lock,0);//Slog.d(huanghb,mFiseRotationLock mFiseRotationLock);if(mFiseRotationLock.equals(0)){//huanghb}elseif(mFiseRotationLock.equals(1)){returnsensorRotation;}elseif(mFiseRotationLock.equals(2)){returnmLandscapeRotation;}elseif(mFiseRotationLock.equals(3)){returnmPortraitRotation;}//huanghb endswitch(orientation){caseActivityInfo.SCREEN_ORIENTATION_PORTRAIT:// Return portrait unless overridden.if(isAnyPortrait(preferredRotation)){returnpreferredRotation;}returnmPortraitRotation;caseActivityInfo.SCREEN_ORIENTATION_LANDSCAPE:// Return landscape unless overridden.if(isLandscapeOrSeascape(preferredRotation)){returnpreferredRotation;}returnmLandscapeRotation;caseActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT:// Return reverse portrait unless overridden.if(isAnyPortrait(preferredRotation)){returnpreferredRotation;}returnmUpsideDownRotation;caseActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE:// Return seascape unless overridden.if(isLandscapeOrSeascape(preferredRotation)){returnpreferredRotation;}returnmSeascapeRotation;caseActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE:caseActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE:// Return either landscape rotation.if(isLandscapeOrSeascape(preferredRotation)){returnpreferredRotation;}if(isLandscapeOrSeascape(lastRotation)){returnlastRotation;}returnmLandscapeRotation;caseActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT:caseActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT:// Return either portrait rotation.if(isAnyPortrait(preferredRotation)){returnpreferredRotation;}if(isAnyPortrait(lastRotation)){returnlastRotation;}returnmPortraitRotation;default:// For USER, UNSPECIFIED, NOSENSOR, SENSOR and FULL_SENSOR,// just return the preferred orientation we already calculated.if(preferredRotation0){returnpreferredRotation;}returnSurface.ROTATION_0;}}五、实际能够实现的效果实现竖屏应用也可以横屏显示如上讯飞语音效果竖屏应用直接横屏显示。常见场景车载、TV、PC模式、桌面模式忽略APP方向请求做菜单功能选项-拓展丰富功能如下可以实现的基本需求总结这里只是一个案例最基本需求就是让竖屏应用也可以横屏显示强制横竖屏在大多数平板、车载、KTV中是最基本的需求需要掌握这里没有研究源码有兴趣的可以了解一下源码很有意思的。
