CN109144809A - A kind of focal variation monitoring method, storage medium, electronic equipment and system - Google Patents
A kind of focal variation monitoring method, storage medium, electronic equipment and system Download PDFInfo
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- CN109144809A CN109144809A CN201710507777.0A CN201710507777A CN109144809A CN 109144809 A CN109144809 A CN 109144809A CN 201710507777 A CN201710507777 A CN 201710507777A CN 109144809 A CN109144809 A CN 109144809A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 18
- 230000008859 change Effects 0.000 claims abstract description 8
- 230000006870 function Effects 0.000 claims description 33
- 238000004590 computer program Methods 0.000 claims description 11
- 230000001960 triggered effect Effects 0.000 claims description 8
- 238000012217 deletion Methods 0.000 claims description 7
- 230000037430 deletion Effects 0.000 claims description 7
- 239000000571 coke Substances 0.000 claims description 6
- 230000007480 spreading Effects 0.000 abstract description 2
- 230000002452 interceptive effect Effects 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/302—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system component is a software system
Abstract
A kind of focal variation monitoring method of the present invention, storage medium, electronic equipment and system, it is related to the focus monitoring field of Android system, method includes: that OnPreDrawListener monitor is added before DecorView is drawn, the growth course of entire Views tree ViewTree under monitoring activity component Activity；It is grabbed in ViewTree by OnPreDrawListener monitor and obtains burnt View positioned at the bottom, as the RootView for monitoring global focus variation；OnFocusChangeListener monitor is set in the RootView as Sentinel point, has focus to trigger Sentinel point by RootView every time, illustrates have focus to change.The present invention is arranged without frequently repeating, and avoids monitor from spreading unchecked, can monitor focal variation.
Description
Technical field
The present invention relates to the focus monitoring field of Android system, in particular to a kind of focal variation monitoring method is deposited
Storage media, electronic equipment and system.
Background technique
It is different from mobile phone/plate touch interactive mode, it needs to rely in Android TV (TV)/box interactive mode
Remote controler/mobile phone.The interactive mode of entire Android TV is: user presses remote controller key, and television equipment receives remote control
After device push button signalling, analytic signal source is key-press event instruction set；Then, system makes focus according to key-press event instruction set
Search operation；Finally, search focus View can make the response for updating view after obtaining focus.
In above process, it obtains key-press event instruction set and its operation before is all Framework layers of (Android of Android
Framework layer) complete, and subsequent processing key-press event instruction set, determine focus search direction, search for focus View, focus View
View refreshing etc. is all completed at Application layers (Android application program layer).
In the sequence of events such as processing key-press event and focus distribution, the variation of focus is feedback key-press event and focus
Distribute the evidence being effectively addressed, therefore it is particularly important to establish perfect and efficient focal variation monitoring system.In Android
In system, Google provides OnFocusChangeListener monitor (focus monitor) to monitor some View's
Focus condition variation, but the monitor has the following problems in use:
1, it needs that OnFocusChangeListener monitor is separately provided to each View, once View is weighed
It draws, monitor needs re-create and are arranged, if View quantity excessively can also cause monitor and spread unchecked.
2, OnFocusChangeListener monitor can only monitor View itself, can not downwards (sub- View) or upward
The variation of (father View) monitoring focus.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of focal variation monitoring method, deposit
Storage media, electronic equipment and system are arranged without frequently repeating, avoid monitor from spreading unchecked, can monitor focal variation.
To achieve the above objectives, the present invention takes a kind of focal variation monitoring method, includes the following steps:
S1. monitor OnPreDrawListener is drawn in addition before top-level windows view DecorView is drawn, and is monitored
The growth course of entire Views tree ViewTree under movable component Activity；
S2. the view View for being located at the bottom in ViewTree is grabbed by OnPreDrawListener, it is complete as monitoring
The Root View RootView of the focal variation of office；
S3., focus monitor OnFocusChangeListener is set in the RootView as Sentinel point, is had every time
Focus triggers Sentinel point by RootView, illustrates have focus to change.
Based on the above technical solution, the specific steps of the S2 are as follows:, will be every in OnPreDrawListener
One View is indexed calibration in sequence, then all index calibration values and corresponding View is saved in set, most
Starting index calibration value and its corresponding View are taken out afterwards, and the corresponding View of index calibration value is RootView.
Based on the above technical solution, the OnPreDrawListener monitor is adding new View or is deleting
It is triggered when except View, when triggering returns to the id of the View of new View or deletion, is obtained by way of looking into id corresponding
The specifying information of View, there are in View memory.
Based on the above technical solution, focus search focusSearch function of the Sentinel point in RootView
It is added before return value, when there is focus to fall coke to new View, focusSearch function can be adjusted back, and adjust back the letter
Several object references is the new View.
Based on the above technical solution, the specifying information that new View is read from View memory, as focus
The information of variation, and exported after the return value of the focusSearch function of RootView.
The present invention also provides a kind of storage medium, computer program, the computer program are stored on the storage medium
Focal variation monitoring method is realized when being executed by processor.
The present invention also provides a kind of electronic equipment, including memory and processor, stored on a processor on memory
The computer program of operation, processor realize above-mentioned focal variation monitoring method when executing computer program.
The present invention also provides a kind of focal variation monitoring system, including DecorView drafting module,
OnPreDrawListener module and Sentinel point module, DecorView drafting module are entire under Activity for drawing
The growth course of ViewTree；OnPreDrawListener module is used to monitor the growth course of entire ViewTree；It is also used to
Crawl ViewTree is located at the View of the bottom, as the RootView for monitoring global focus variation；Sentinel point module is set to institute
It states in RootView, is triggered by the focus of RootView, for showing there is focus to change.
Based on the above technical solution, the system also includes View memory modules, for storing triggering
The specifying information of the View of OnPreDrawListener, the View for triggering OnPreDrawListener is that the ViewTree adds
The View of the new View or deletion added.
Based on the above technical solution, the system also includes an output modules, are used for from View memory mould
The specifying information of new View is read in block, and is exported after the return value of the focusSearch function of RootView；It is wherein new
The specifying information of View refer to: focus fall it is burnt on new View when, adjust back the object reference of focusSearch function.
The beneficial effects of the present invention are:
1, it is drawn by monitoring DecorView (top-level windows view), to monitor entire ViewTree under Activity
Growth course, and then realize that single monitor monitors all View creations, it permanently uses after primary setting, is set without frequently repeating
It sets, and avoids excessively using OnFocusChangeListener monitor.
2, when having focus every time by RootView, Sentinel point is triggered, illustrates have focus to change.
3, when focus changes, the memory address of the specific focus View of focus transmitting is intercepted and captured by Sentinel point, by interior
It deposits address accurately to search the detailed variation of focus, to obtain the information of specific focal variation.
4, in such a way that the start node RootView combination focusSearch for monitoring focus transmitting beats storehouse, dynamic
Export the information of focal variation.
Detailed description of the invention
Fig. 1 is focal variation of embodiment of the present invention monitoring method flow chart；
The focus that Fig. 2 is ViewTree of the embodiment of the present invention distributes schematic diagram；
Fig. 3 is the connection block diagram of electronic equipment of the embodiment of the present invention.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Term explanation:
View: being a superclass of android system, it is basic group of android system application layer interface visualization
Part unit.
Focus (Focus): refer to that android system after receiving the push button signalling source of the equipment such as remote controler or mobile phone, is located
Reason corresponding instruction makes special display effect of UI level, such as scaling, offset, background switching etc..
Focus search (FocusSearch) refers to android system according to focusing after remote controler or mobile phone key signal instruction
Point is relocated, it is possible to specify specific View receives focus, and otherwise, system will carry out focus according to default algorithm and reset
Position.
Key-press event (KeyEvent): being also key-press event instruction set, refers to that android system is receiving remote controler or hand
Corresponding signal is converted into instruction set after the push button signalling instruction of machine.
Key-press event distribution (KeyEvent Dispatch): refer to that android system receives key command post-processing focus
Node during reorientation, each View includes such node, once need to terminate the reorientation of focus
Operation only needs that the node is truncated.
Activity: movable component, the big component of the four of Android system (Activity, Service,
One of BroadcastReceiver, ContentProvider), Activity is usually exactly an individual screen, above it
It can show some controls or monitor and handle the event of user and respond.
As shown in Figure 1, focal variation monitoring method of the present invention, specifically comprises the following steps:
S1. addition OnPreDrawListener monitor (draws prison before DecorView (top-level windows view) is drawn
Listen device), the growth course of entire ViewTree (Views tree) under Activity (movable component) is monitored,
OnPreDrawListener monitor is triggered when adding new View or deletion View.
S2. the View for being located at the bottom in ViewTree is grabbed by OnPreDrawListener monitor, as monitoring
The RootView (Root View) of global focus variation, wherein all View can obtain coke under ViewTree.
As shown in Fig. 2, since the focus distribution of the ViewTree of Activity is a kind of transmission similar to neural network
Mode, focus are equivalent to conducted signal, therefore whenever having focus to change, and the distribution of focus can be along ViewTree first
A Root View (RootView) starts to transmit.So as the RootView for monitoring global focus variation, it is necessary to be ViewTree
In be located at the bottom View.Therefore, in OnPreDrawListener monitor, each View is carried out in sequence
All index calibration values and corresponding View, are then saved in set by index calibration, finally take out starting index calibration value
Corresponding View, as selected RootView.
S3. in the RootView, setting OnFocusChangeListener monitor (focus monitor) is used as the whistle
Point has focus to trigger Sentinel point by RootView every time, illustrates have focus to change.
In above-mentioned steps S1, OnPreDrawListener monitor is touched when adding new View or deletion View
Hair, when triggering, can return to the id of corresponding View (View of i.e. new View or deletion), can pass through findViewById function
(searching view functions Id) obtains the specifying information of corresponding View in a manner of looking into id, and specifying information includes corresponding View
Id, type, memory address etc..And by the specifying information of corresponding View there are in View memory (i.e. ViewStorage),
View memory is dique data structure, carries out information verification and reading when focus being facilitated to change, and View memory can be with
It is arranged in the function readjustment of onPreDrawListener monitor.
In Activity, the distribution of focus depends on the distribution of key-press event (KeyEvent), and only key-press event is not having
There is intercepted and key-press event successfully to distribute completion, just will do it the distribution (i.e. focus changes) of focus, therefore focus
Successful distribution whether depend on key-press event distribution.Activity is that can not capture focal variation when focus is distributed
Specifying information, especially receive the specifying information of the View of focus；It is intercepted in key-press event and key-press event is distributed
In the case of failure, focus will appear loss problem, and focus changes at this time, but android system can not be in this case
The information for feeding back focal variation out, the View for needing to handle key-press event is also the subsequent View that will receive focus.
Therefore, it is necessary to the specifying information of focal variation is obtained by the value of feedback for monitoring key-press event.By using
The dispatchKeyEvent function of RootView carries out capture and output that focus changes information, dispatchKeyEvent
Function can feedback reception and handle key-press event View specifying information, which is also that subsequent will receive focus
View。
In step S3, the focal variation of Activity is monitored by the Sentinel point being arranged in RootView.Sentinel point needs
It is added before the return value of the focusSearch function of RootView, when there is focus to fall coke to new View,
The object reference that focusSearch function can be adjusted back, and adjust back the function is the new View, wherein object reference
It is to being a kind of guide to the object.Specifically, a stack information output function, the calling of the function is arranged for Sentinel point
Before the focusSearch return value of RootView, stack information output function can directly export the object memory for calling it
Address, to realize the focusSearch function for receiving the View object reference RootView of focus, focusSearch function
Allocating stack information output function, the output of stack information output function receives the memory address of the View of focus, finally by interior
It deposits address and the specifying information for receiving the View of focus, and the specifying information that will be read out is checked and read from View memory
(including id, type, memory address and receive focus condition) saved, facilitate subsequent output.
The present invention can also export the specifying information of focal variation after monitoring focal variation, and RootView's
It is exported after the return value of focusSearch function.Its principle is: the information output of focal variation is needed RootView's
It is exported after focusSearch return value, principle is that focusSearch function can be called repeatedly, and return value also can
It frequently changes or is always fixed value, each return value can be all saved, and when focusSearch function stops calling, be needed
Compare first return value (RFocusFirst) and the last one return value (RFocusLast).
If RFocusFirst=RFocusLast, then it represents that focus simultaneously has not been changed, and does not need to export any information.
If RFocusFirst ≠ RFocusLast, then it represents that focus changes, and exports the specific letter of focal variation
Breath.
The embodiment of the present invention also provides a kind of storage medium, and computer program, computer program are stored on storage medium
The method that above-mentioned suspension shows self-defined information is realized when being executed by processor.It should be noted that the storage medium includes U
Disk, mobile hard disk, ROM (Read-Only Memory, read-only memory), (Random Access Memory, is deposited RAM at random
Access to memory), the various media that can store program code such as magnetic or disk.
As shown in figure 3, the embodiment of the present invention also provides a kind of electronic equipment, including memory and processor, on memory
The computer program run on a processor is stored, it is customized that processor realizes that above-mentioned suspension is shown when executing computer program
The method of information.
The embodiment of the present invention also provides a kind of focal variation monitoring system, including DecorView drafting module,
OnPreDrawListener (drawing monitor) module and Sentinel point module.
DecorView drafting module is used to draw the growth course of entire ViewTree under Activity.
OnPreDrawListener module is used to monitor the growth course of entire ViewTree；It is also used to grab
ViewTree is located at the View of the bottom, as the RootView for monitoring global focus variation.
Sentinel point module is set in the RootView, is triggered by the focus of RootView, for showing there is focus
It changes.
Above system can also include that a View memory module and an output module, View memory module are used for
The specifying information of the View of storage triggering OnPreDrawListener module, mainly new View information.When there is focus to fall coke
When on to new View, focus changes, and output module from View memory module for reading the specific of new View
Information exports the specifying information of focal variation.
It should be understood that system provided in an embodiment of the present invention is when carrying out intermodule communication, only with above-mentioned each function
The division progress of module can according to need and for example, in practical application by above-mentioned function distribution by different function moulds
Block is completed, i.e., the internal structure of system is divided into different functional modules, to complete all or part of function described above
Energy.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of focal variation monitoring method, which comprises the steps of:
S1. monitor OnPreDrawListener, monitoring activity are drawn in addition before top-level windows view DecorView is drawn
The growth course of entire Views tree ViewTree under component Activity；
S2. the view View for being located at the bottom in ViewTree is grabbed by OnPreDrawListener, global as monitoring
The Root View RootView of focal variation；
S3., focus monitor OnFocusChangeListener is set in the RootView as Sentinel point, there is focus every time
Sentinel point is triggered by RootView, illustrates have focus to change.
2. focal variation monitoring method as described in claim 1, which is characterized in that the specific steps of the S2 are as follows:
In OnPreDrawListener, each View is indexed calibration in sequence, then by all index calibration values and right
The View answered is saved in set, finally takes out starting index calibration value and its corresponding View, and index calibration value is corresponding
View is RootView.
3. focal variation monitoring method as described in claim 1, it is characterised in that: the OnPreDrawListener is monitored
Device is triggered when adding new View or deleting View, and when triggering returns to the id of the View of new View or deletion, is passed through
The mode for looking into id obtains the specifying information of corresponding View, and there are in View memory.
4. focal variation monitoring method as claimed in claim 3, it is characterised in that: focus of the Sentinel point in RootView is searched
It is added before the return value of rope focusSearch function, when there is focus to fall coke to new View, focusSearch function meeting
The object reference adjusted back, and adjust back the function is the new View.
5. focal variation monitoring method as claimed in claim 4, it is characterised in that: read new View from View memory
Specifying information, exported as the information of focal variation, and after the return value of the focusSearch function of RootView.
6. a kind of storage medium, computer program is stored on the storage medium, it is characterised in that: the computer program is located
Reason device realizes method described in any one of claim 1 to 5 when executing.
7. a kind of electronic equipment, including memory and processor, the computer journey run on a processor is stored on memory
Sequence, it is characterised in that: processor realizes method described in any one of claim 1 to 5 when executing computer program.
8. a kind of focal variation monitoring system, it is characterised in that: including DecorView drafting module, OnPreDrawListener
Module and Sentinel point module,
DecorView drafting module is used to draw the growth course of entire ViewTree under Activity；
OnPreDrawListener module is used to monitor the growth course of entire ViewTree；It is also used to grab ViewTree
In the View of the bottom, as the RootView for monitoring global focus variation；
Sentinel point module is set in the RootView, is triggered by the focus of RootView, for showing there is focus
Variation.
9. focal variation monitoring system as claimed in claim 8, it is characterised in that: the system also includes View memory moulds
Block, the specifying information of the View for storing triggering OnPreDrawListener, triggers the View of OnPreDrawListener
It is the View of the new View or deletion of the ViewTree addition.
10. focal variation monitoring system as claimed in claim 9, it is characterised in that: the system also includes an output moulds
Block, for reading the specifying information of new View from View memory module, and in the focusSearch function of RootView
Return value after export；Wherein the specifying information of new View refers to: when focus falls coke to new View, readjustment
The object reference of focusSearch function.
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| CN201710507777.0A CN109144809B (en) | 2017-06-28 | 2017-06-28 | Focus change monitoring method, storage medium, electronic device and system |
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| CN113254140A (en) * | 2021-06-21 | 2021-08-13 | 杭州涂鸦信息技术有限公司 | Floating window control method and device, computer equipment and readable storage medium |
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| CN109144809B (en) | 2022-03-25 |
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