CN108241479A - Double screen dual control vehicle device display device and implementation method based on android system - Google Patents
Double screen dual control vehicle device display device and implementation method based on android system Download PDFInfo
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- CN108241479A CN108241479A CN201810012656.3A CN201810012656A CN108241479A CN 108241479 A CN108241479 A CN 108241479A CN 201810012656 A CN201810012656 A CN 201810012656A CN 108241479 A CN108241479 A CN 108241479A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
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- General Physics & Mathematics (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
Present invention is disclosed double screen dual control vehicle device display devices based on android system, including Android system module and two display screens, primary shuangping san bottom in Android system module is equipped with double screen switching interface, and the system framework layer of Android system module includes double screen logic management services module, Double-screen touch-control event distributes module, double screen stack management module, Android display service double screen handover module.Specifically realize include touch-control step, start applying step, screen in operating steps and switch screen step.Double screen dual control can be realized using a set of mainboard for carrying Android system and two display screens in the present invention, effectively reduces the cost of double screen dual control vehicle device display device.Two display screens are mutual indepedent, can simultaneously independent operating application, do not interfere with each other between each other.Also compatible third-party application.Two display screens can realize interaction, and screens switch reaches millisecond rank, and interaction response is fast, and on application operation in screen without influence.
Description
Technical field
The present invention relates to more particularly to double screen dual control vehicle device display device based on android system and implementation method, belong to
Vehicle device shows the technical field of equipment.
Background technology
Vehicle mounted multimedia recreation terminal starts more diversification, and compared to traditional vehicle device, double screen Android vehicle device is gathered around on software
There is abundanter application, the user experience of similar mobile phone and better scalability, double applications that double screen is presented also can
Give user more modish use feeling than single application.In hardware aspect, double screen can have the visual experience of more science fiction than single screen, carry
Rise in-car decorations technology sense.Therefore double screen Android vehicle device is increasingly becoming a kind of new demand, so that Android system is to multi-screen
Display and interaction support demand it is increasingly urgent, at present Android system publication 4.4.2 versions by using
Presentation starts to support shuangping san, and the version after 6.0 starts to support split screen display available, current double screen dual control vehicle device
System using two sets of main board systems and two sets of screens, causes cost higher.And its primary function can not also meet it is abundant more
The multi-screen demand of sample.
Invention content
The present invention is to solve above-mentioned the deficiencies in the prior art, and traditional multi-screen display based on android system exists
Primary function restriction can not meet demand the problem of, double screen dual control vehicle device display device based on android system and realization side are provided
Method.
First purpose of the present invention is：Double screen dual control vehicle device display device based on android system is proposed, including
Mainboard and two display screens connecting that communicate with mainboard, arbitrary display screen have control module, have a peace in the mainboard
Tall and erect system module,
It is equipped with primary shuangping san bottom in the Android system module, the primary shuangping san bottom is equipped with respectively with two
The double screen switching interface that a display screen is connected,
The system framework layer of the Android system module includes
Double screen logic management services module for receiving the touch event of control module and signal Analysis type, sends out and distributes finger
It enables,
Double-screen touch-control event distributes module, and instruction is distributed, and touch event is distributed on corresponding display screen for receiving；
Double screen stack management module, for storing the application message of two display screens respectively,
Android display service double screen handover module, exchanges for the screen display between two display screens and double screen stack manages mould
The application message of two display screens is exchanged in block.
Preferably, pass through BP communication module phases between the system framework layer and the service layer of the Android system module
Even.
Preferably, the control module is contact control module or physical button control module.
Second object of the present invention is：Propose the realization of double screen dual control vehicle device display device based on android system
Method includes the following steps：
S1 touch-control steps, the control module of the arbitrary display screen of user's touch-control, double screen logic management services module pass through the touch-control thing
Part and signal Analysis type, signal type are divided into switching screen event, start application affairs, manipulation event in screen；
S2 starts applying step, and Double-screen touch-control event, which distributes module and receives, starts application affairs generation control instruction, corresponding
Display screen starts current startup application affairs, and application message is stored to double screen stack management module；
Operating steps in S3 screens, Double-screen touch-control event distribute module and receive manipulation event in screen, and corresponding display screen carries out phase
Manipulation event response in the screen answered；
S4 switches screen step, and Android display service double screen handover module receives switching screen event, carries out two display screens
Screen display switching, and the application messages of two display screens in double screen stack management module is exchanged.
The beneficial effects are mainly as follows：
1. double screen dual control can be realized using a set of mainboard for carrying Android system and two display screens, it is double to effectively reduce double screen
Control the cost of vehicle device display device.
2. two display screens are mutual indepedent, can simultaneously independent operating application, do not interfere with each other between each other.Also compatible
Tripartite applies.
3. two display screens can realize interaction, and screens switch reaches millisecond rank, and interaction response is fast, and to being applied in screen
Operation is without influence.
Description of the drawings
Fig. 1 is the circuit theory schematic diagram of double screen dual control vehicle device display device of the present invention.
Fig. 2 is the flow diagram of double screen dual control vehicle device display device implementation method of the present invention.
Specific embodiment
The present invention provides double screen dual control vehicle device display device and implementation method based on android system.Below in conjunction with attached drawing pair
Technical solution of the present invention is described in detail, so that it is more readily understood and grasps.
Propose double screen dual control vehicle device display device based on android system, as shown in Figure 1, including mainboard and with mainboard phase
Two display screens of connection are communicated, arbitrary display screen has control module, which presses for contact control module or physics
Key control module.Have an Android system module in mainboard, primary shuangping san bottom is equipped in Android system module, it is primary double
Screen shows that bottom is equipped with the double screen switching interface being connected respectively with two display screens.
The system framework layer of Android system module includes：Double screen logic management services module, for receiving control module
Touch event and signal Analysis type, send out and distribute instruction；Double-screen touch-control event distributes module, and instruction is distributed for receiving, and
Touch event is distributed on corresponding display screen；Double screen stack management module, for storing the application of two display screens respectively
Information；Android display service double screen handover module, exchanges for the screen display between two display screens and double screen stack manages mould
The application message of two display screens is exchanged in block.
It is connected between the system framework layer and the service layer of Android system module by BP communication modules.
The system of the present invention can become the Android vehicle system of single screen to control in the Android vehicle device that double screen dual control can interact
System so that automobile primary the passenger side can manipulate simultaneously, such as copilot can open on the second screen and navigate and set road
The second screen content, which is switched on the first screen, after line allows main driving attentively to drive, and can also listen receipts on the first screen with main driving
While sound machine tune platform, copilot is using the applications of the WPS in the second screen to carry out office document reading simultaneously.
The invention also provides the implementation method of double screen dual control vehicle device display device based on android system, as shown in Fig. 2,
Include the following steps：
Touch-control step, the control module of the arbitrary display screen of user's touch-control, double screen logic management services module pass through the touch event
And signal Analysis type, signal type be divided into switching screen event, start application affairs, screen in manipulation event；
Refinement ground, the control module of arbitrary display screen are equipped with switching key, and the signal type of touch-control switching key is to switch
Screen event, and start application affairs and refer to the touch-control opening that application software is realized by control module, shield interior manipulation event package
The application function for including application software is operated, is set in the screen of current display screen, shielding the operations such as interior setting.
Start applying step, Double-screen touch-control event, which distributes module and receives, starts application affairs generation control instruction, corresponding
Display screen start current startup application affairs, and application message is stored to double screen stack management module；
Refinement ground, Double-screen touch-control event distribute module and control instruction are sent to system, and system starts standard single-screen application, leads to
The mode for obtaining and starting using View and the binding of current display screen is shown is crossed, application will be started and be shown to current corresponding display
On screen.
Operating steps in screen, Double-screen touch-control event distribute module and receive manipulation event in screen, and corresponding display screen carries out
Manipulation event response in corresponding screen；
Refinement, action event has system directly to be responded on the display screen in screen.
Switch screen step, Android display service double screen handover module receives switching screen event, carries out two displays
The screen display switching of screen, and the application message of two display screens in double screen stack management module is exchanged；
Refinement ground, system call tangent screen interface, which leads to first with bottom Android display module Surfacefingler
News inform this system increased switching display module in Surfaceflinger, complete to show handoff functionality, secondly in system
Data in the corresponding double screen stack management module of display screen are also done corresponding exchange in ccf layer.
It further illustrates, the Android shuangping san and switching method used in the present invention can't steer clear of
This system service of SurfaceFlinger, because of the core that SurfaceFlinger, which is Android, to be shown, in system layer
Double screen switching method can also modify in the compass of competency of SurfaceFlinger, will be raw at postFramebuffer
Into buffer be sent in corresponding Framebuffer and shown, method of the invention is exactly by buffer pairs of transmission
It should be related to exchange.
Application stack is established in system framework layer, and the present invention increases double screen in Android system ccf layer WindowManager
Stack management module, signal code are as follows
public ActivityStack mMainStack;
public ActivityStack mSecondStack;
ActivityManagerService m = thr.mService;
m.mMainStack = new ActivityStack(m, context, true);
m.mSecondStack = new ActivityStack(m, context, true);
It exchanges and shows that the code of middle layer communication writes row according to the Binder mechanism of Android, in exchange method in the text,
The communication class for being responsible for connection system framework layer and system services layer communication is ISurfaceComposer, it is therefore desirable in such
Add corresponding communication mechanism（Beeper system and BN mechanism）Code, the signal code of Binder communications are as follows:
iWindowManager= WindowManagerGlobal.getWindowManagerService();
./…
class BpSurfaceComposer : public BpInterface<ISurfaceComposer>
{
public:
BpSurfaceComposer(const sp<IBinder>& impl)
: BpInterface<ISurfaceComposer>(impl)
………
Virtual void SwapDisplayId()
{
parcel data, reply;
data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor
());
remote()->transact::(BnSurfaceComposer::SWAP_DISPLAY,data,&reply)
}
status_t BnSurfaceComposer::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case SWAP::DISPLAY：
{
CHECK_INTERFACE(ISurfaceComposer,data,reply);
status_t res = SwapDisplayId();
reply->writeInt32(res);
}break;
}
The shuangping san introduced in the present invention is considered to expand to apply more, so can run different applications on two screens
Program, and for Android in itself for, the touch event of double screen is all temporarily only supported to distribute in the main application of main screen, so
For touch event, it is also necessary to go to distribute manually, distributing touch event can set about from many aspects, can introduce from application layer in text
Distribute the method for touch event.Here touch event is divided into two classes, touchscreen events and physical button touch event.Example generation
Code is as follows：
dispatchTouchEvent(MotionEvent event) {
//
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
//-=
return super.dispatchKeyEvent(event);
}
Two pieces of display screens can open different applications respectively in the present invention, so as to show different contents.Tradition cannot be used
Android open the method for application, need to use by specially treated, apply and be pressed into corresponding stack so as to which system layer is allowed to recognize
Illustrate code as follows：
Class<> clazz = Class.forName("android.app.ActivityView");
mStartActivityMethod = clazz.getMethod("startActivity", Intent.class);
public void startActivityWrapper(Intent intent) {
…….
mStartActivityMethod.invoke(mActivityView, intent);
}
By above description it can be found that the present invention is based on Android system double screen dual control vehicle device display device and implementation method,
Double screen dual control can be realized using a set of mainboard for carrying Android system and two display screens, effectively reduce double screen dual control vehicle device
The cost of display device.Two display screens are mutual indepedent, can simultaneously independent operating application, do not interfere with each other between each other.May be used also
Compatible third-party application.Two display screens can realize interaction, and screens switch reaches millisecond rank, and interaction response is fast, and to screen
Interior application operation is without influence.
Technical scheme of the present invention is fully described above, it should be noted that specific embodiment party of the invention
Formula is simultaneously not limited by the description set out above, the Spirit Essence of those of ordinary skill in the art according to the present invention structure, method or
All technical solutions that function etc. is formed using equivalents or equivalent transformation, all fall within protection scope of the present invention
Within.
Claims (4)
1. double screen dual control vehicle device display device based on android system, communicate including mainboard and with mainboard two displays connecting
Screen, arbitrary display screen have control module, have an Android system module in the mainboard,
It is characterized in that：Primary shuangping san bottom is equipped in the Android system module, on the primary shuangping san bottom
Equipped with the double screen switching interface being connected respectively with two display screens,
The system framework layer of the Android system module includes
Double screen logic management services module for receiving the touch event of control module and signal Analysis type, sends out and distributes finger
It enables,
Double-screen touch-control event distributes module, and instruction is distributed, and touch event is distributed on corresponding display screen for receiving；
Double screen stack management module, for storing the application message of two display screens respectively,
Android display service double screen handover module, exchanges for the screen display between two display screens and double screen stack manages mould
The application message of two display screens is exchanged in block.
2. double screen dual control vehicle device display device based on android system according to claim 1, it is characterised in that：The system
It is connected between system ccf layer and the service layer of the Android system module by BP communication modules.
3. double screen dual control vehicle device display device based on android system according to claim 1, it is characterised in that：The control
Molding block is contact control module or physical button control module.
It is 4. special based on the implementation method of the double screen dual control vehicle device display device based on android system described in claims 1 to 3
Sign is to include the following steps：
S1 touch-control steps, the control module of the arbitrary display screen of user's touch-control, double screen logic management services module pass through the touch-control thing
Part and signal Analysis type, signal type are divided into switching screen event, start application affairs, manipulation event in screen；
S2 starts applying step, and Double-screen touch-control event, which distributes module and receives, starts application affairs generation control instruction, corresponding
Display screen starts current startup application affairs, and application message is stored to double screen stack management module；
Operating steps in S3 screens, Double-screen touch-control event distribute module and receive manipulation event in screen, and corresponding display screen carries out phase
Manipulation event response in the screen answered；
S4 switches screen step, and Android display service double screen handover module receives switching screen event, carries out two display screens
Screen display switching, and the application messages of two display screens in double screen stack management module is exchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810012656.3A CN108241479A (en) | 2018-01-06 | 2018-01-06 | Double screen dual control vehicle device display device and implementation method based on android system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810012656.3A CN108241479A (en) | 2018-01-06 | 2018-01-06 | Double screen dual control vehicle device display device and implementation method based on android system |
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|---|---|
| CN108241479A true CN108241479A (en) | 2018-07-03 |
Family
ID=62699370
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521921A (en) * | 2018-11-07 | 2019-03-26 | 深圳市布谷鸟科技有限公司 | The onboard system and method for supporting double key logic functions are realized based on operating system |
| CN109992193A (en) * | 2019-03-29 | 2019-07-09 | 佛吉亚好帮手电子科技有限公司 | A kind of winged screen interactive approach of car touch screen |
| CN110386089A (en) * | 2019-06-24 | 2019-10-29 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle device multi-screen interactive display system |
| CN110989957A (en) * | 2019-12-12 | 2020-04-10 | 深圳市深智电科技有限公司 | Multi-screen display method, terminal and storage medium |
| CN111857516A (en) * | 2020-07-24 | 2020-10-30 | 上海擎感智能科技有限公司 | Interface interchange method and device and computer storage medium |
| CN112242122A (en) * | 2020-10-09 | 2021-01-19 | 北京如影智能科技有限公司 | Dual-screen display method, device and system based on android system |
| CN113619647B (en) * | 2021-08-27 | 2024-03-22 | 中车唐山机车车辆有限公司 | Vehicle-mounted display device and train |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521921A (en) * | 2018-11-07 | 2019-03-26 | 深圳市布谷鸟科技有限公司 | The onboard system and method for supporting double key logic functions are realized based on operating system |
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| CN110989957A (en) * | 2019-12-12 | 2020-04-10 | 深圳市深智电科技有限公司 | Multi-screen display method, terminal and storage medium |
| CN111857516A (en) * | 2020-07-24 | 2020-10-30 | 上海擎感智能科技有限公司 | Interface interchange method and device and computer storage medium |
| CN112242122A (en) * | 2020-10-09 | 2021-01-19 | 北京如影智能科技有限公司 | Dual-screen display method, device and system based on android system |
| CN113619647B (en) * | 2021-08-27 | 2024-03-22 | 中车唐山机车车辆有限公司 | Vehicle-mounted display device and train |
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Application publication date: 20180703 |
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