CN102411629A - File scanning method and device based on android system - Google Patents
File scanning method and device based on android system Download PDFInfo
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- CN102411629A CN102411629A CN2011104327184A CN201110432718A CN102411629A CN 102411629 A CN102411629 A CN 102411629A CN 2011104327184 A CN2011104327184 A CN 2011104327184A CN 201110432718 A CN201110432718 A CN 201110432718A CN 102411629 A CN102411629 A CN 102411629A
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Abstract
The invention discloses a file scanning method and device based on an Android system, when a mobile storage device is mounted on an Android system for the first time, full-disk scanning is carried out on the mobile storage device, an external database corresponding to the UID number of the mobile storage device is established and stored on the mobile storage device, and the corresponding external database is directly searched from the mobile storage device for scanning and reading when the mobile storage device is mounted next time. The invention provides an efficient and rapid scanning method, which can avoid repeated scanning, avoid a great deal of resources from being wasted on repeated scanning, and avoid the problem that the database is mistaken by frequent operation.
Description
Technical field
The present invention relates to electronic storage device scanning technique field, in particular a kind ofly the file of movable storage device is carried out method for scanning and device based on the android system.
Background technology
Android is the intelligent platform of a new generation, and increasing electric terminal uses Android as operating system, makes the user of electric terminal of Android system grow with each passing day.Simultaneously, along with the development of technology, memory device is tending towards variation, particularly Android system applies after TV, and for the high definition video of counting GB easily, memory device is especially from traditional SDcard, USB device, high capacity portable hard drive commonly used till now.So the scanning support for multimedia file in the multiple memory device just seems particularly important in the Android system now.
In the present android system; Scanning is exactly to add multimedia file in the external data base; And the information supplies such as metadata and thumbnail of obtaining multimedia file are used for using and show the user; In order to guarantee to show the correctness of data, the storehouse that Updates Information that will be real-time in the time of the external apparatus change.And,, also cause a lot of problems because its dirigibility can make the action in the storehouse that Updates Information more frequent for movable storage device.
Existing android system is as shown in Figure 1 to the scanning process of the file of movable storage device:
S10, beginning, carry memory device.
Behind S11, the memory device carry, Kernel (kernel) can send out mounted broadcasting and pass scanning pattern, and the notice scanner begins scanning, gets into step S12.
S12, startup scanning;
S13, get into scanning directory, get into S14 with recursive fashion.
S14, read the file under this catalogue from scanning pattern, if file then recurrence open, to find out media file, if file is arranged, execution in step S15; If do not have file then return S13.
S15, judge whether to need the file of scanning,, otherwise get into step S18, the end of scan to step S19 if get into step S16.
S16, judge file to be scanned, if belong to multimedia file, then carry out scanning, and get into S17.Then return S15 if not multimedia file
After S17, the file scan, its scanning information is inserted in database, if it exists in database, update time then.Return the S15 step.
S19, scanning aftertreatment, sync database is deleted non-existent data base entries.
S20, the end of scan.
Can find out by top step, during carry equipment, deposit scanning information in and do not exist clauses and subclauses to make database keep dynamically updating with deletion.
Analyzing existing scanning process can find, when plugging movable storage device, can scanning information and it is added in the database, and when pulling out movable storage device, can fall the data dump of respective disc.So, for movable storage device, be easy to generate the action of plug repeatedly; All need rescan each time will the labor resource, and sweep velocity can be very slow, and the operating database of repeated multiple times; Cause that easily database goes wrong, will operating of old database causes existing procedure and produces new database; And newly-generated lane database does not have original data, thereby can in application, can't see any file, causes to let the user think that equipment is out of order.
Therefore, prior art awaits to improve and development.
Summary of the invention
The technical matters that the present invention will solve is; Above-mentioned defective to prior art; Provide a kind of and the file of movable storage device is carried out method for scanning and device, a kind of efficiently scan method fast is provided, can avoid repeatability scanning based on the android system; Can not make a large amount of wastings of resources in multiple scanning yet, and the problem of having avoided frequent operating database that it is made mistakes.
The technical scheme that technical solution problem of the present invention is adopted is following:
A kind ofly the file of movable storage device is carried out method for scanning, wherein, comprises step based on the android system:
A, when movable storage device is mounted in the Android system for the first time; Said movable storage device is carried out scan full hard disk; And foundation and UID number of said movable storage device corresponding external data base; Be stored on the said movable storage device, the external data base of when the said movable storage device of next carry, directly searching said correspondence from said movable storage device scans and reads.
Saidly based on the android system file of movable storage device is carried out scan method, wherein, said steps A specifically comprises:
A1, after movable storage device is mounted in the Android system, authorize broadcasting in the Android system and upload scanning pattern, the notice scanner begins scanning;
A2, entering scanning pattern, the specified file that is used to deposit the sweep record clauses and subclauses that initialization has been set up;
A3, search and whether have in the scanning pattern and UID number of said movable storage device corresponding external data base, if execution in step A4 is arranged, otherwise execution in step A5;
A4, will with original entry record in UID number of said movable storage device corresponding external data base to the specified file that is used for depositing the sweep record clauses and subclauses, jump to steps A 6 again;
A5, foundation and UID number of said movable storage device corresponding external data base are stored on the said movable storage device;
A6, with recursive fashion traverse scanning catalogue, search the file in the scanning directory;
A7, do comparison to clauses and subclauses in file that traverses and the said specified file, need to judge whether the file of scanning,, otherwise jump to steps A 10 if the file that needs scanning is arranged then execution in step A8;
A8, scanning document;
A9, scanning aftertreatment, the storehouse that Updates Information, and return steps A 7;
A10, the end of scan are deleted non-existent data base entries;
A11, empty the said specified file that is used to deposit the sweep record clauses and subclauses, finish.
Saidly based on the android system file of movable storage device is carried out scan method, wherein, said steps A 1 also comprises:
As the movable storage device carry on the Android system the time, set up in advance one be used to deposit the sweep record clauses and subclauses specified file.
Saidly based on the android system file of movable storage device is carried out scan method, wherein, the said file of searching in the scanning directory is a media file.
Saidly based on the android system file of movable storage device is carried out scan method, wherein, the said specified file that is used to deposit the sweep record clauses and subclauses is the table form document.
Saidly based on the android system file of movable storage device is carried out scan method, wherein, the said specified file that is used to deposit the sweep record clauses and subclauses is the TXT file
Saidly based on the android system file of movable storage device is carried out scan method, wherein, said movable storage device is USB flash disk or portable hard drive.
A kind of based on the android system to the device that the file of movable storage device scans, wherein, comprising:
External data base is set up module; Be used for when movable storage device is mounted in the Android system for the first time; Said movable storage device is carried out scan full hard disk, and foundation and UID number of said movable storage device corresponding external data base, be stored on the said movable storage device;
Scan module is used for when the said movable storage device of next carry directly scanning from the external data base that said movable storage device is searched said correspondence and reads.
The said device that the file of movable storage device is scanned based on the android system, wherein, it also comprises:
Judge and control module; Be used for when the said movable storage device of carry; Whether search has in the scanning pattern and UID number of said movable storage device corresponding external data base; If the external data base that has control directly to search said correspondence from said movable storage device through said scan module scans read, set up module and set up and UID number of said movable storage device corresponding external data base, be stored on the said movable storage device otherwise control said external data base.
The said device that the file of movable storage device is scanned based on the android system, wherein, said movable storage device is USB flash disk or portable hard drive.
Provided by the present inventionly the file of movable storage device is carried out method for scanning and device based on the android system; Owing to adopted the action of plug repeatedly that when being connected to equipment such as computer, TV, occurs to movable storage devices such as USB flash disk commonly used, portable hard drives, a kind of efficiently scan method fast is provided, can avoid repeatability scanning; Can not make a large amount of wastings of resources in multiple scanning yet; And avoided frequent operating database can make its problem of makeing mistakes, thus the generation of labile factor avoided, and on second time carry after the equipment; Greatly reduce sweep time; Saved a large amount of scannings the ample resources that will expend, improved scan efficiency, guaranteed the stability of scanning.
Description of drawings
Fig. 1 is the scanning process synoptic diagram of memory device of the android system of prior art.
Fig. 2 be the embodiment of the invention based on the android system file of movable storage device is carried out the method for scanning process flow diagram.
Fig. 3 is the principle of device block diagram that the file of movable storage device is scanned based on the android system of the embodiment of the invention.
Embodiment
Provided by the present inventionly the file of movable storage device is carried out method for scanning and device based on the android system; For making the object of the invention, technical scheme and advantage clearer, clear and definite, below develop simultaneously embodiment to further explain of the present invention with reference to accompanying drawing.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
To the problem that existing many movable storage devices need data storage capacity of frequent operation to be prone to, provided by the present inventionly the file of movable storage device is carried out method for scanning based on the android system, mainly may further comprise the steps:
S1, when movable storage device is mounted in the Android system for the first time; Said movable storage device is carried out scan full hard disk; And foundation and UID number of said movable storage device corresponding external data base, be stored in external data base that said movable storage device directly searches said correspondence from said movable storage device when being taken in the said movable storage device of next carry and scan and read.
Said method also comprises: after existing a plurality of movable storage devices to be mounted in the Android system simultaneously, then each movable storage device correspondence build one with its UID number corresponding external data base, store movable storage device separately respectively into.
Adopt the scheme of setting up a plurality of databases in the embodiment of the invention; And be based upon database on the corresponding movable storage device; The corresponding database of movable storage device; In the movable storage device carry, set up its corresponding external data base according to UID (the only identifier of unique identifier) number of movable storage device, be stored on the corresponding movable storage device.
Use this method, in scanning, be based upon the multimedia document information on the said movable storage device in its corresponding database.Unloading time, movable storage device just visit less than, so do not need the content of delete database yet.
And; The place of full blast is exactly; General user's movable storage device can be not too many yet, carries out scanning process during carry in the first time and set up database, and next time, this movable storage device was again carry the time; Just need not lose time and rescan again, directly the file of reading database.
Below will be through concrete application implementation example, based on the android system file of movable storage device is carried out method for scanning and do further detailed explanation of the present invention.
As shown in Figure 2, said method specifically may further comprise the steps:
S101, beginning, the carry movable storage device.
After S102, memory device were mounted in the Android system, the kernel of Android system can be sent out mounted broadcasting and upload scanning pattern, and the notice scanner begins scanning.
S103, startup scanning.
S104, obtain the scanning pattern of uploading, get into scanning directory.
S105, get into scanning pattern, the specified file that is used to deposit the sweep record clauses and subclauses that initialization has been set up, adopting the said specified file that is used to deposit the sweep record clauses and subclauses in the present embodiment is the table form document, can certainly be the TXT file.Promptly need among this step S105 the initialization of table form document.
S106, search and whether have in the scanning pattern and UID number of said movable storage device corresponding external data base; Database file is the external.db file in the present embodiment; Whether promptly search has the external.db file, if execution in step S107 is arranged, otherwise execution in step S108.
S107, will with original entry record in UID number of the said movable storage device corresponding external data base (like the external.db file) to the specified file that is used for depositing the sweep record clauses and subclauses (in the table form document), jump to step S109 again.
S108, foundation and UID number of said movable storage device corresponding external data base (promptly setting up external data base external.db database) are stored on the corresponding movable storage device.
S109, with recursive fashion traverse scanning catalogue, search the file (like media file) in the scanning directory, be the ergodic data storehouse, find out media file.
S110, do comparison to the clauses and subclauses in the file that traverses (like media file) and the said specified file (like the table form document); Need to judge whether the file of scanning; If the file execution in step S111 then that needs scanning is promptly arranged, otherwise jumps to step S113.
S111, scanning document, i.e. the new file that scanning did not have originally.
S112, scanning aftertreatment, the storehouse that Updates Information, and return step S110.
S113, the end of scan, and get into S114, the non-existent data base entries of deletion;
S115, empty the said specified file that is used to deposit the sweep record clauses and subclauses, finish.
By on can find out because in movable storage device plug process, might increase or deleted file; So, also added a synchronizing process of data in the embodiment of the invention, on the movable storage device database is arranged even after plugging, find; Check once; See whether database and movable storage device be synchronous,, only need the new file of scanning to get final product if increase file newly; If deleted partial document, will delete the corresponding database record.Certainly the record and the existing file of database before this process need contrasts, the entry record that adopts database before table in the present invention just can contrast out in cache when the traversal existing equipment.
From above-mentioned steps, can find out; For the scanning of mobile device, only when plugging for the first time, just can spend more resource and time to remove to scan foundation and UID number of said movable storage device corresponding external data base;, be stored on the corresponding movable storage device.The change of the media file of common mobile memory is fewer, in the time of once more on the carry, can directly use exactly basically; File change is just all arranged at last each time; Just the file that increases newly of scanning or deletion more than data, compare with all rebuliding with original Delete All, workload is very little; The lifting of relative efficiency is apparent in view, and has avoided the generation of some problems.
It is thus clear that; The invention described above embodiment provides a kind ofly carries out method for scanning based on the android system to the file of movable storage device; A kind of efficiently scan method fast is provided; Can avoid repeatability scanning, also can not make a large amount of wastings of resources in multiple scanning, and the problem of having avoided frequent operating database that it is made mistakes.
Based on the foregoing description, the embodiment of the invention also provides a kind of device that the file of movable storage device is scanned based on the android system, and as shown in Figure 3, said device mainly comprises:
External data base is set up module 310; Be used for when movable storage device is mounted in the Android system for the first time; Said movable storage device is carried out scan full hard disk, and foundation and UID number of said movable storage device corresponding external data base, be stored on the said movable storage device; Specifically as stated.
Judge and control module 330; Be used for when the said movable storage device of carry; Whether search has in the scanning pattern and UID number of said movable storage device corresponding external data base; If the external data base that has control directly to search said correspondence from said movable storage device through said scan module scans read, set up module and set up and UID number of said movable storage device corresponding external data base, be stored on the said movable storage device otherwise control said external data base; Specifically as stated.
Wherein, said movable storage device is USB flash disk or portable hard drive.
In sum, provided by the present inventionly the file of movable storage device is carried out method for scanning and device, owing to adopted the action of plug repeatedly that when being connected to equipment such as computer, TV, occurs to movable storage devices such as USB flash disk commonly used, portable hard drives based on the android system; A kind of efficiently scan method fast is provided; Can avoid repeatability scanning, also can not make a large amount of wastings of resources in multiple scanning, and the problem of having avoided frequent operating database that it is made mistakes; Thereby avoided the generation of labile factor; And on second time carry, after the equipment, greatly reduce sweep time, saved a large amount of scannings the ample resources that will expend; Improve scan efficiency, guaranteed the stability of scanning.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, concerning those of ordinary skills, can improve or conversion that all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.
Claims (10)
1. one kind is carried out method for scanning based on the android system to the file of movable storage device, it is characterized in that, comprises step:
A, when movable storage device is mounted in the Android system for the first time; Said movable storage device is carried out scan full hard disk; And foundation and UID number of said movable storage device corresponding external data base; Be stored on the said movable storage device, the external data base of when the said movable storage device of next carry, directly searching said correspondence from said movable storage device scans and reads.
2. based on the android system file of movable storage device is carried out scan method according to claim 1 is said, it is characterized in that said steps A specifically comprises:
A1, after movable storage device is mounted in the Android system, authorize broadcasting in the Android system and upload scanning pattern, the notice scanner begins scanning;
A2, entering scanning pattern, the specified file that is used to deposit the sweep record clauses and subclauses that initialization has been set up;
A3, search and whether have in the scanning pattern and UID number of said movable storage device corresponding external data base, if execution in step A4 is arranged, otherwise execution in step A5;
A4, will with original entry record in UID number of said movable storage device corresponding external data base to the specified file that is used for depositing the sweep record clauses and subclauses, jump to steps A 6 again;
A5, foundation and UID number of said movable storage device corresponding external data base are stored on the said movable storage device;
A6, with recursive fashion traverse scanning catalogue, search the file in the scanning directory;
A7, do comparison to the clauses and subclauses in file that traverses and the said specified file, need to judge whether the file of scanning,, otherwise jump to steps A 10 if the file that needs scanning is arranged then execution in step A8;
A8, scanning document;
A9, scanning aftertreatment, the storehouse that Updates Information, and return steps A 7;
A10, the end of scan are deleted non-existent data base entries;
A11, empty the said specified file that is used to deposit the sweep record clauses and subclauses, finish.
3. based on the android system file of movable storage device is carried out scan method according to claim 2 is said, it is characterized in that said steps A 1 also comprises:
As the movable storage device carry on the Android system the time, set up in advance one be used to deposit the sweep record clauses and subclauses specified file.
4. based on the android system file of movable storage device is carried out scan method according to claim 2 is said, it is characterized in that the said file of searching in the scanning directory is a media file.
5. based on the android system file of movable storage device is carried out scan method according to claim 2 is said, it is characterized in that, the said specified file that is used to deposit the sweep record clauses and subclauses is table form document or TXT file.
6. based on the android system file of movable storage device is carried out scan method according to claim 1 is said; It is characterized in that; Said steps A also comprises: after existing a plurality of movable storage devices to be mounted in the Android system simultaneously; Then each movable storage device correspondence build one with its UID number corresponding external data base, store movable storage device separately respectively into.
7. based on the android system file of movable storage device is carried out scan method according to claim 1 is said, it is characterized in that said movable storage device is USB flash disk or portable hard drive.
One kind based on the android system to the device that the file of movable storage device scans, it is characterized in that, comprising:
External data base is set up module; Be used for when movable storage device is mounted in the Android system for the first time; Said movable storage device is carried out scan full hard disk, and foundation and UID number of said movable storage device corresponding external data base, be stored on the said movable storage device;
Scan module is used for when the said movable storage device of next carry directly scanning from the external data base that said movable storage device is searched said correspondence and reads.
9. said according to Claim 8 based on the android system to the device that the file of movable storage device scans, it is characterized in that it also comprises:
Judge and control module; Be used for when the said movable storage device of carry; Whether search has in the scanning pattern and UID number of said movable storage device corresponding external data base; If the external data base that has control directly to search said correspondence from said movable storage device through said scan module scans read, set up module and set up and UID number of said movable storage device corresponding external data base, be stored on the said movable storage device otherwise control said external data base.
10. said according to Claim 8 based on the android system to the device that the file of movable storage device scans, it is characterized in that said movable storage device is USB flash disk or portable hard drive.
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| CN2011104327184A CN102411629A (en) | 2011-12-21 | 2011-12-21 | File scanning method and device based on android system |
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| CN2011104327184A CN102411629A (en) | 2011-12-21 | 2011-12-21 | File scanning method and device based on android system |
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| CN107491269B (en) * | 2017-08-07 | 2021-02-23 | 深圳前海茂佳软件科技有限公司 | External memory file scanning display method, display terminal and storage medium |
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Application publication date: 20120411 |