CN103984510A - Method and device for prompting printer statuses based on Android - Google Patents
Method and device for prompting printer statuses based on Android Download PDFInfo
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- CN103984510A CN103984510A CN201410234312.9A CN201410234312A CN103984510A CN 103984510 A CN103984510 A CN 103984510A CN 201410234312 A CN201410234312 A CN 201410234312A CN 103984510 A CN103984510 A CN 103984510A
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Abstract
The invention provides a method and a device for prompting printer statuses based on Android. The method and the device are used for an App to refresh printer status information in real time. The technical scheme of the method and the device is as follows: Uevent events based on printing equipment plugging and pulling out are monitored at an application framework layer; when an expected Uevent event is monitored, the status information of the printing equipment is obtained; a first broadcast containing the status information is sent to an application layer by virtue of the build-in broadcasting mechanism of Android; an App registered for the first broadcast obtains the status information. Due to the implementation of the technical scheme, the App is enabled to obtain the status information of the printing equipment in real time when the printing equipment is connected or pulled out.
Description
Technical field
The present invention relates to Android systems technology field, be specifically related to a kind of printer modes reminding method and device based on Android.
Background technology
Android Android is one and take Linux as basic open source code Mobile operating system, is mainly used in mobile device, and the Open Handset Alliance(OHA being set up by Google company of Google opens handheld device alliance) continue in leader and exploitation.Android system is used as the operating system of various kinds of equipment with its characteristic of increasing income by extensive customization, comprising Medical Devices such as diasonographs.In addition, be different from general Android equipment, the general operation A pp(Application that is only used for controlling this equipment in application layer operation of Android equipment for customizing, application program), the UI(User Interface of operation A pp) will take display interface completely.
Android system can also support equipment for customizing to pass through USB(Universal Serial Bus, USB (universal serial bus)) interface connects peripheral hardware and carries out Function Extension, as printer.
But when Android equipment for customizing connects printer, operation A pp can not obtain the status information of printer, so operation A pp cannot effectively manage peripheral hardware.
Summary of the invention
In order to address the above problem, the invention provides a kind of printer modes reminding method and device based on Android, for App, refresh in real time printer modes information.By implementing technical solution of the present invention, can, when connecting or extracting printing device, make the status information of App Real-time Obtaining printing device.
A printer modes reminding method based on Android, comprising:
At application framework layer, monitor the Uevent event based on printing device plug;
When listening to the Uevent event of expection, obtain the status information of described printing device;
The broadcast mechanism carrying by Android sends the first broadcast that comprises described status information to application layer;
The App of registered described the first broadcast obtains described status information.
A printer modes suggestion device based on Android, comprises printing device and App, also comprises:
Monitor module, for monitor the Uevent event based on described printing device plug at application framework layer;
Acquisition module, for when described monitoring module listens to the Uevent event of expection, obtains the status information of described printing device;
Sending module, sends for the broadcast mechanism carrying by Android the first broadcast that comprises described status information to application layer;
Described App comprises and obtains submodule, for obtaining described status information, wherein, registered described the first broadcast of described App.
The invention has the beneficial effects as follows, utilize the plug of Uevent action listener printing device and obtain its status information, the broadcast mechanism then carrying by Android sends broadcast to registered App, thereby this status information is delivered to App.By implementing technical solution of the present invention, can make the status information of App Real-time Obtaining printing device.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention or prior art, below will be to needed accompanying drawing in embodiment or description of the Prior Art be briefly described, apparently, the accompanying drawing the following describes is only that this implements novel embodiment, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the printer modes reminding method process flow diagram of first embodiment of the invention based on Android;
Fig. 2 is the printer modes reminding method process flow diagram of second embodiment of the invention based on Android;
Fig. 3 is the printer modes suggestion device structural drawing of third embodiment of the invention based on Android;
Fig. 4 is the printer modes suggestion device structural drawing of fourth embodiment of the invention based on Android.
Embodiment
Below in conjunction with the Figure of description in the present invention, the technical scheme in invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
First embodiment of the invention will be elaborated to a kind of printer modes reminding method based on Android, and the method idiographic flow described in the present embodiment refers to Fig. 1, comprises step:
101, at application framework layer, monitor the Uevent event based on printing device plug.
Android system architecture comprises 4 levels, is respectively linux kernel layer, system Runtime Library layer, application framework layer and application layer.Uevent event, User Space Event, refers to the event notice that kernel sends to user's space, makes App can have an opportunity this event to react.
The embodiment of the present invention continues to monitor the Uevent event based on printing device plug at application framework layer, if do not hear the Uevent event of expection, continues to monitor; If listen to the Uevent event of expection, trigger execution step 102.
102,, when listening to the Uevent event of expection, obtain the status information of this printing device.
When listening to the Uevent event plugging based on printing device of expection at application framework layer, utilize the existing mechanism of Android system to obtain the status information of this printing device.Wherein, printing device is specifically as follows printer, and status information includes but not limited to: plug status information, print queue status information, printing progress status information or document feeder status information.
After obtaining the status information of printing device, described status information is write to the first broadcast.
103, the broadcast mechanism carrying by Android sends the first broadcast that comprises this status information to application layer.
In the present embodiment, without setting up specially for the finger daemon of printing device but directly use the broadcast mechanism carrying, can save a large amount of system resource.
Wherein, to have at least one App interested in the printing device status information of knowing system and connecting for application layer.
104, the App of registered the first broadcast obtains status information.
Before implementing the present embodiment, in application layer, to knowing that the interested App of printing device status information that system connects need first register the first broadcast, only have the App of registered the first broadcast just can obtain the first broadcast sending to application layer.
In this step, in application layer, the App of registered the first broadcast receives the first broadcast, and in the first broadcast, captures the status information of printing device.So far, realize the status information process of App Real-time Obtaining printing device.
In the present embodiment, utilize the plug of Uevent action listener printing device and obtain its status information, the broadcast mechanism then carrying by Android sends broadcast to registered App, thereby this status information is delivered to App.By implementing technical solution of the present invention, can make the status information of App Real-time Obtaining printing device.
Second embodiment of the invention remarks additionally the printer modes reminding method based on Android to described in the first embodiment, and the method idiographic flow described in the present embodiment refers to Fig. 2, comprises step:
201, at application framework layer, monitor the Uevent event based on printing device plug.
The embodiment of the present invention continues to monitor the Uevent event based on printing device plug at application framework layer, if do not hear the Uevent event of expection, continues to monitor; If listen to the Uevent event of expection, trigger execution step 202.
202,, when listening to the Uevent event of expection, obtain the status information of this printing device
When listening to the Uevent event plugging based on printing device of expection at application framework layer, utilize the existing mechanism of Android system to obtain the status information of this printing device.Wherein, printing device is specifically as follows printer, and status information includes but not limited to: plug status information, print queue status information, printing progress status information or document feeder status information.
After obtaining the status information of printing device, described status information is write to the first broadcast.
203, the broadcast mechanism carrying by Android sends the first broadcast that comprises this status information to application layer.
In the present embodiment, without setting up specially for the finger daemon of printing device but directly use the broadcast mechanism carrying, can save a large amount of system resource.
Wherein, to have at least one App interested in the printing device status information of knowing system and connecting for application layer.
204, the App of registered the first broadcast obtains status information.
Before implementing the present embodiment, in application layer, to knowing that the interested App of printing device status information that system connects need first register the first broadcast, only have the App of registered the first broadcast just can obtain the first broadcast sending to application layer.
In this step, in application layer, the App of registered the first broadcast receives the first broadcast, and in the first broadcast, captures the status information of printing device.So far, realize the status information process of App Real-time Obtaining printing device.
205, according to this status information, to user, point out the state of printing device.
The App of registered the first broadcast points out the state of printing device to user according to this status information, be specifically as follows the modes such as diagram prompting, text prompt, does not do concrete restriction here.
206, App sends the second broadcast that comprises print control code to application framework layer.
The App of registered the first broadcast is interested in knowing the printing device status information of system connection, and therefore the App of registered the first broadcast also generally possesses the functional module of controlling printing device.Step 201 to 205 complete the status information of App Real-time Obtaining printing device and the process pointed out after, follow-up execution step 206 to 209, controls the process of printing device to realize relevant App.
App realizes by sending print control code the control of printing device.App sends the second broadcast that comprises print control code to application framework layer, wherein, the printing device operation of print control code indication includes but not limited to: start printing, time-out printing, stop printing.
207, the first kind receives the second broadcast by Netlink mechanism, and obtains the printing control command that described print control code is corresponding.
Wherein, need be in the relevant printing control command of the newly-increased definition of application framework layer.Correspondingly, printing control command includes but not limited to: start print command, time-out printing order, stop print command.
The first kind is positioned at application framework layer, and particularly, the first kind is CommandListener class.
208, the first kind sends and prints control command to Equations of The Second Kind.
Wherein, Equations of The Second Kind is also positioned at application framework layer, and particularly, Equations of The Second Kind is VolmeManage class.
209, Equations of The Second Kind sends and prints control command to linux kernel layer, and kernel is controlled accordingly to printing device.
In the present embodiment, utilize the plug of Uevent action listener printing device and obtain its status information, the broadcast mechanism then carrying by Android sends broadcast to registered App, thereby this status information is delivered to App.By implementing technical solution of the present invention, can make the status information of App Real-time Obtaining printing device.In the present embodiment, also utilize Netlink mechanism to transmit and comprise second broadcast of printing control command, thereby do not setting up under the prerequisite of finger daemon, realize the control function of App to printing device.
Third embodiment of the invention will be elaborated to a kind of printer modes suggestion device based on Android, and the device concrete structure described in the present embodiment refers to Fig. 3, comprising:
Printing device 301, monitoring module 302, acquisition module 303, sending module 304 and App305, wherein, monitor module 302, printing device 301, acquisition module 303, sending module 304 and App305 and communicate to connect successively, acquisition module 303 and 302 communication connections of monitoring module.App305 also comprises: obtain submodule 3051.
Monitor module 302, for monitoring the Uevent event based on printing device 301 plugs at application framework layer.
The monitoring module 302 of the embodiment of the present invention continues to monitor the Uevent event based on printing device 301 plugs at application framework layer, if do not hear the Uevent event of expection, continues to monitor; If listen to the Uevent event of expection, trigger acquisition module 303 executable operations.
Acquisition module 303, for when monitoring module 302 listens to the Uevent event of expection, obtains the status information of printing device 301.
When monitoring module 302 when application framework layer listens to the Uevent event plugging based on printing device 301 of expection, acquisition module 303 utilizes the existing mechanism of Android system to obtain the status information of this printing device 301.Wherein, printing device 301 is specifically as follows printer, and status information includes but not limited to: plug status information, print queue status information, printing progress status information or document feeder status information.
At acquisition module 303, obtain after the status information of printing device 301, also described status information is write to the first broadcast.Then by the first broadcast delivery to sending module 304.
Sending module 304, sends for the broadcast mechanism carrying by Android the first broadcast that comprises described status information to application layer.
In the present embodiment, without the broadcast mechanism of setting up the special finger daemon for printing device 301 but being carried by the direct use of sending module 304, can save a large amount of system resource.
Wherein, to have at least one App305 interested in printing device 301 status informations of knowing system and connecting for application layer.
App305 obtains submodule 3051, for obtaining described status information.
Wherein, registered described the first broadcast of described App305.
Before implementing the present embodiment, in application layer, to knowing that the interested App305 of printing device 301 status information that system connects need first register the first broadcast, only have the App305 of registered the first broadcast just can obtain the first broadcast sending to application layer.
In application layer, the App305 of registered the first broadcast receives the first broadcast, and in the first broadcast, captures the status information of printing device 301 by obtaining submodule 3051.So far, realize the status information process of App305 Real-time Obtaining printing device 301.
In the present embodiment, monitoring module 302 utilizes the plug of Uevent action listener printing device 301 and obtains its status information, then the broadcast mechanism that sending module 304 carries by Android sends broadcast to registered App305, thereby this status information is delivered to App305.By implementing technical solution of the present invention, can make the status information of App305 Real-time Obtaining printing device 301.
Fourth embodiment of the invention remarks additionally the printer modes suggestion device based on Android to described in the 3rd embodiment, and the device concrete structure described in the present embodiment refers to Fig. 4, comprising:
Printing device 401, monitoring module 402, acquisition module 403, sending module 404, App405, first kind module 406 and Equations of The Second Kind module 407, wherein, printing device 401, acquisition module 403, sending module 404, App405, first kind module 406, Equations of The Second Kind module 407 communicate to connect successively, printing device 401 and 402 communication connections of monitoring module.App405 also comprises: obtain submodule 4051, prompting submodule 4052 and send submodule 4053.
Monitor module 402, for monitoring the Uevent event based on printing device 401 plugs at application framework layer.
The monitoring module 402 of the embodiment of the present invention continues to monitor the Uevent event based on printing device 401 plugs at application framework layer, if do not hear the Uevent event of expection, continues to monitor; If listen to the Uevent event of expection, trigger acquisition module 403 executable operations.
Acquisition module 403, for when monitoring module 402 listens to the Uevent event of expection, obtains the status information of printing device 401.
When monitoring module 402 when application framework layer listens to the Uevent event plugging based on printing device 401 of expection, acquisition module 403 utilizes the existing mechanism of Android system to obtain the status information of this printing device 401.Wherein, printing device 401 is specifically as follows printer, and status information includes but not limited to: plug status information, print queue status information, printing progress status information or document feeder status information.
At acquisition module 403, obtain after the status information of printing device 401, also described status information is write to the first broadcast.Then by the first broadcast delivery to sending module 404.
Sending module 404, sends for the broadcast mechanism carrying by Android the first broadcast that comprises described status information to application layer.
In the present embodiment, without the broadcast mechanism of setting up the special finger daemon for printing device 401 but being carried by the direct use of sending module 404, can save a large amount of system resource.
Wherein, to have at least one App405 interested in printing device 401 status informations of knowing system and connecting for application layer.
App405 obtains submodule 4051, for obtaining described status information.
Wherein, registered described the first broadcast of described App.
Before implementing the present embodiment, in application layer, to knowing that the interested App405 of printing device 401 status information that system connects need first register the first broadcast, only have the App405 of registered the first broadcast just can obtain the first broadcast sending to application layer.
In application layer, the App405 of registered the first broadcast receives the first broadcast, and in the first broadcast, captures the status information of printing device 401 by obtaining submodule 4051.
The prompting submodule 4052 of App405, for pointing out the state of printing device 401 to user according to status information.
The prompting submodule 4052 of the App405 of registered the first broadcast is pointed out the state of printing device 401 to user according to this status information, be specifically as follows the modes such as diagram prompting, text prompt, does not do concrete restriction here.
The transmission submodule 4053 of App405, for sending the second broadcast that comprises print control code to application framework layer.
The App405 of registered the first broadcast is interested in knowing printing device 401 status informations of system connection, and therefore the App405 of registered the first broadcast also generally possesses the functional module of controlling printing device 401, as sent submodule 4053.
App405 sends print control code realization to the control of printing device 401 by sending submodule 4053.App405 sends the second broadcast that comprises print control code to application framework layer, wherein, printing device 401 operations of print control code indication include but not limited to: start printing, time-out printing, stop printing.
First kind module 406, for being received and sent the second broadcast that submodule 4053 sends by Netlink mechanism, and obtains the printing control command that print control code is corresponding, also for sending this to Equations of The Second Kind module 407, prints control command.
Wherein, need be in the relevant printing control command of the newly-increased definition of application framework layer.Correspondingly, printing control command includes but not limited to: start print command, time-out printing order, stop print command.
First kind module 406 is positioned at application framework layer, and particularly, first kind module 406 is CommandListener class.Wherein, Equations of The Second Kind is also positioned at application framework layer, and particularly, Equations of The Second Kind is VolmeManage class.
Equations of The Second Kind module 407, for send described printing control command to linux kernel layer, controls 408 pairs of printing device 401 of kernel accordingly.
Wherein, Equations of The Second Kind module 407 is also positioned at application framework layer, and particularly, Equations of The Second Kind module 407 is VolmeManage class.
In the present embodiment, monitoring module 402 utilizes the plug of Uevent action listener printing device 401 and obtains its status information, then the broadcast mechanism that sending module 404 carries by Android sends broadcast to registered App405, thereby this status information is delivered to App405.By implementing technical solution of the present invention, can make the status information of App405 Real-time Obtaining printing device 401.In the present embodiment, also first kind module 406 utilizes the reception of Netlink mechanism to comprise second broadcast of printing control command, thereby is not setting up under the prerequisite of finger daemon, realizes the control function of App405 to printing device 401.
A kind of printer modes reminding method and the device based on the Android above embodiment of the present invention being provided is described in detail, but the explanation of above embodiment is just understood structure of the present invention and core concept thereof for helping, and should not be construed as limitation of the present invention.In the technical scope that those skilled in the art disclose in the present invention, the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. the printer modes reminding method based on Android, is characterized in that, comprising:
At application framework layer, monitor the Uevent event based on printing device plug;
When listening to the Uevent event of expection, obtain the status information of described printing device;
The broadcast mechanism carrying by Android sends the first broadcast that comprises described status information to application layer;
The App of registered described the first broadcast obtains described status information.
2. the printer modes reminding method based on Android according to claim 1, is characterized in that, described status information comprises:
Plug status information, print queue status information, printing progress status information or document feeder status information.
3. the printer modes reminding method based on Android according to claim 1 and 2, is characterized in that, the App of described registered described the first broadcast also comprises after obtaining described status information:
According to described status information, to user, point out the state of described printing device.
4. the printer modes reminding method based on Android according to claim 1 and 2, is characterized in that, also comprises:
Described App sends the second broadcast that comprises print control code to application framework layer;
The first kind receives described the second broadcast by Netlink mechanism, and obtains the printing control command that described print control code is corresponding;
The described first kind sends described printing control command to Equations of The Second Kind;
Described Equations of The Second Kind sends described printing control command to linux kernel layer, checks described printing device and control accordingly in making.
5. the printer modes reminding method based on Android according to claim 4, is characterized in that,
The described first kind is CommandListener class, and described Equations of The Second Kind is VolmeManage class.
6. the printer modes suggestion device based on Android, comprises printing device and App, it is characterized in that, also comprises:
Monitor module, for monitor the Uevent event based on described printing device plug at application framework layer;
Acquisition module, for when described monitoring module listens to the Uevent event of expection, obtains the status information of described printing device;
Sending module, sends for the broadcast mechanism carrying by Android the first broadcast that comprises described status information to application layer;
Described App comprises and obtains submodule, for obtaining described status information, wherein, registered described the first broadcast of described App.
7. the printer modes suggestion device based on Android according to claim 6, is characterized in that, described status information comprises:
Plug status information, print queue status information, printing progress status information or document feeder status information.
8. according to the printer modes suggestion device based on Android described in claim 6 or 7, it is characterized in that, described App also comprises:
Prompting submodule, for pointing out the state of described printing device to user according to described status information.
9. according to the printer modes suggestion device based on Android described in claim 6 or 7, it is characterized in that,
Described App also comprises transmission submodule, for send the second broadcast that comprises print control code to application framework layer;
Described device also comprises:
First kind module, for receive described the second broadcast by Netlink mechanism, and obtains the printing control command that described print control code is corresponding; Described first kind module, also for sending described printing control command to Equations of The Second Kind module;
Described Equations of The Second Kind module, for send described printing control command to linux kernel layer, checks described printing device and controls accordingly in making.
10. the printer modes suggestion device based on Android according to claim 9, is characterized in that,
Described first kind module is CommandListener class, and described Equations of The Second Kind module is VolmeManage class.
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| CN103984510B (en) | 2019-11-01 |
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