CN105335242A - Method and system for downloading video file at background in IOS system - Google Patents

Method and system for downloading video file at background in IOS system Download PDF

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Publication number
CN105335242A
CN105335242A CN201510734223.5A CN201510734223A CN105335242A CN 105335242 A CN105335242 A CN 105335242A CN 201510734223 A CN201510734223 A CN 201510734223A CN 105335242 A CN105335242 A CN 105335242A
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China
Prior art keywords
downloading task
application program
downloading
perform
subtask
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Granted
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CN201510734223.5A
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Chinese (zh)
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CN105335242B (en
Inventor
陈磊
王涛
顾思斌
潘柏宇
王冀
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Alibaba China Co Ltd
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Chuanxian Network Technology Shanghai Co Ltd
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Priority to CN201510734223.5A priority Critical patent/CN105335242B/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46Multiprogramming arrangements
    • G06F9/54Interprogram communication
    • G06F9/545Interprogram communication where tasks reside in different layers, e.g. user- and kernel-space
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46Multiprogramming arrangements
    • G06F9/48Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806Task transfer initiation or dispatching
    • G06F9/4843Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
    • G06F9/485Task life-cycle, e.g. stopping, restarting, resuming execution
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2209/00Indexing scheme relating to G06F9/00
    • G06F2209/48Indexing scheme relating to G06F9/48
    • G06F2209/482Application

Abstract

The invention discloses a method and a system for downloading a video file at the background in an IOS system. The method comprises the following steps of making downloading task configuration of an application program in advance; on the basis of the downloading task configuration, creating a downloading task aiming at a specific video file in the application program; executing the download task; after the application program enters the background, continuously executing the currently executing download task; if the execution of the currently execution download task is completed, waking up the application program and entering the background waking time; judging whether an unexecuted download task exists or not; if the unexecuted download task exists, executing a preset delay event in the background waking time so as to execute the unexecuted download task. The method and the system have the advantages that the long-time continuous background downloading is realized; the IOS system rule does not need to be disobeyed; excessive performance resources do not need to be occupied; the processing mode on the download task of execution failure is realized, so that the method has good fault tolerance.

Description

The method and system of backstage downloading video files in IOS system
Technical field
The application relates to communication technical field, specifically, relates to the method and system of backstage downloading video files in a kind of IOS system.
Background technology
In IOS system, there is very unique running background mechanism.System can the managing the application program of running background of intelligence, limits the operation of background program to a certain extent, to ensure the stable and smooth of entire system.According to the rule of IOS system, except the minorities such as location or music need except the program of long-time running background, most program, after falling back on backstage certain hour, can be automatically switched off.
The application program of current a lot of Internet video class, can download to video file in local storage and carry out off-line viewing.But based on IOS system convention described above, video class application program cannot realize for a long time, the backstage downloading process of multitask.And if downloading process is placed in front stage operation, then can affect user uses other application programs during downloading, and causes Consumer's Experience to reduce.
Some application program adopts, and plays the mode of noiseless music in downloading process, makes application program can running background for a long time, thus realizes the download of unrestricted backstage.But the defect of this method equally clearly.A large amount of performance resources can be taken on the one hand, improve power consumption, the stability of influential system and fluency.On the other hand, also probably clash with regular music player.And the more important thing is, take the application program of similar mechanism, probably cannot be audited by the official of IOS system.
Visible, lack a kind of under IOS system in prior art, the method for the backstage downloading video files of long-time, multitask can be realized.
Summary of the invention
In view of this, technical problems to be solved in this application there is provided the method and system of backstage downloading video files in a kind of IOS system, by within the backstage wakeup time of application program, perform delay event, and realize the download of multitask continuous print backstage.
In order to solve the problems of the technologies described above, the application has following technical scheme:
A method for backstage downloading video files in IOS system, described method comprises:
Pre-establish the downloading task configuration of application program; Configure based on described downloading task, and in described application program, create the downloading task for particular video file; And perform described downloading task;
After described application program enters backstage, then continue the downloading task performing current execution; If the downloading task of described current execution is complete, then described application program is waken up and enter backstage wakeup time;
Judge whether in addition unenforced downloading task, if there is unenforced downloading task, then, in the rear in platform wakeup time, perform the delay event preset, to perform described unenforced downloading task.
Preferably, described video file comprises some slicing files; Then in described downloading task, comprise the subtask of each slicing files corresponding; Then the downloading task of described current execution is complete is specially:
All subtasks in the downloading task of current execution are all complete.
Preferably, the execution of described subtask is specially:
Judge in described downloading task, whether there is the subtask that the url address of specific slicing files is corresponding;
If existed and the time-out execution of this subtask, then recover to perform this subtask;
If exist and this subtask be cancelled, then restart to perform this subtask;
If exist and this subtask perform, then continue perform this subtask;
If there is no this subtask, then corresponding according to the url address creation of described slicing files subtask, and perform.
Preferably, described method also comprises:
Application program is sent a notification message to system by completehandle interface, enters backstage halted state to make described application program.
Preferably, described method also comprises:
In the rear in platform wakeup time, preserve complete downloading task, download the video file obtained.
Preferably, described method also comprises:
If the downloading task of described current execution performs failure, then described application program waken up and enter backstage wakeup time;
In the rear in platform wakeup time, perform the delay event preset, to recover to perform the failed downloading task of described execution.
Preferably, described method also comprises:
Exceed default limits value when described downloading task performs failed number of times, then stop performing this downloading task.
Preferably, described downloading task configuration comprises:
Arrange and whether allow to perform downloading task under cellular network.
Preferably, described method also comprises:
After the original downloading task of change configures arranging of correspondence, regenerate the configuration of corresponding downloading task.
Preferably, described system comprises:
Configuration module, for pre-establishing the downloading task configuration of application program; Configure based on described downloading task, and in described application program, create the downloading task for particular video file;
Execution module, for performing described downloading task; After described application program enters backstage, continue the downloading task performing current execution; Make the downloading task of described current execution is complete, then described application program waken up and enter backstage wakeup time;
Postponing event module, for judging whether in addition unenforced downloading task, if there is unenforced downloading task, then, in the rear in platform wakeup time, performing the delay event preset, to perform described unenforced downloading task.
Compared with prior art, the method and system described in the application, reaches following effect:
The backstage achieving long-time continuous is downloaded, and without the need to running counter to the rule of IOS system, also need not take unnecessary performance resource, with other players, not occurring any conflict.Achieving the processing mode for performing failed downloading task, making described method be provided with good fault-tolerance.
Certainly, the arbitrary product implementing the application must not necessarily need to reach above-described all technique effects simultaneously.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present application, and form a application's part, the schematic description and description of the application, for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:
Fig. 1 is method flow diagram described in the embodiment of the present application;
Fig. 2 is method flow diagram described in another embodiment of the application;
Fig. 3 is system architecture schematic diagram described in the embodiment of the present application.
Embodiment
As employed some vocabulary to censure specific components in the middle of instructions and claim.Those skilled in the art should understand, and hardware manufacturer may call same assembly with different noun.This specification and claims are not used as with the difference of title the mode distinguishing assembly, but are used as the criterion of differentiation with assembly difference functionally." comprising " as mentioned in the middle of instructions and claim is in the whole text an open language, therefore should be construed to " comprise but be not limited to "." roughly " refer to that in receivable error range, those skilled in the art can solve the technical problem within the scope of certain error, reach described technique effect substantially.In addition, " couple " word and comprise directly any and indirectly electric property coupling means at this.Therefore, if describe a first device in literary composition to be coupled to one second device, then represent described first device and directly can be electrically coupled to described second device, or be indirectly electrically coupled to described second device by other devices or the means that couple.Instructions subsequent descriptions is implement the better embodiment of the application, and right described description is for the purpose of the rule that the application is described, and is not used to the scope limiting the application.The protection domain of the application is when being as the criterion depending on the claims person of defining.
In IOS system, after application program enters backstage, can according to the backstage rule of IOS system, active operation a period of time on backstage, more automatically enter backstage halted state.But, the execution that the downloading task that this application program performs originally still can continue.After the downloading task completing the execution of described script, this application program can be waken up and make it to enter backstage wakeup time by system.
After backstage wakeup time is system wake-up application program, is the time of its one section of reserved operation, is generally no more than 30 seconds.During this period of time, application program can carry out certain operation, as preserved downloading task the file etc. that obtains.And application program also needs during this period of time, come legal to reenter backstage halted state by the interface function completehandle of IOS system.Otherwise can be considered and violate system convention, cause application crash.
The application, just based on described backstage wakeup time, achieves long-time, multitask continuous print backstage downloading video files.
Shown in Figure 1, be the specific embodiment of the method for backstage downloading video files in IOS system described in the application.Described in the present embodiment, method comprises the following steps:
Step 101, pre-establish application program downloading task configuration; Configure based on described downloading task, and in described application program, create the downloading task for particular video file; And perform described downloading task.
The configuration of described downloading task refers to some that formulate for video file downloading task and specifically arranges.Such as, whether described downloading task configuration comprises: arrange and allow to perform downloading task under cellular network.According to the feature of IOS system, when original downloading task will be changed configure arranging of correspondence, cannot modify in the configuration of original downloading task, but the configuration of corresponding downloading task must be regenerated.
The setting that described application program can configure based on described downloading task, for particular video file, creates downloading task, to be downloaded to by this video file in local storage, is convenient to off-line viewing.When selected video file quantity is multiple, be then necessary for each video file and create a downloading task accordingly.And then the downloading task described in performing, namely start the download carrying out video file.
If application program remains on system front stage operation, then each downloading task must remain executing state, and after completing a downloading task, performs other downloading task automatically.But how long-time, multitask continuous print completes download on backstage, is namely the technical matters that the present embodiment will solve.
It should be noted that, video file generally comprises some slicing files.Then in a downloading task, need to comprise some subtasks, download slicing files that each subtask is corresponding.And all subtasks in downloading task all complete time, namely mean that this downloading task completes.
The execution of described subtask is specially:
Judge in described downloading task, whether there is the subtask that the url address of specific slicing files is corresponding;
If existed and the time-out execution of this subtask, then recover to perform this subtask;
If exist and this subtask be cancelled, then restart to perform this subtask;
If exist and this subtask perform, then continue perform this subtask;
If there is no this subtask, then corresponding according to the url address creation of described slicing files subtask, and perform.
Step 102, after described application program enters backstage, then continue to perform the downloading task of current execution; If the downloading task of described current execution is complete, then described application program is waken up and enter backstage wakeup time.
After application program enters system background, can according to the backstage rule of IOS system, active operation a period of time on backstage, more automatically enter backstage halted state.The backstage active time that general IOS7 system allows is 10 minutes, and the backstage active time that IOS8 system allows is 3 minutes.
But, even if after application program enters backstage halted state, the current downloading task performed still can continue to perform.But in the prior art, when described application program enters system background, after the downloading task performed is complete, application program just can be subject to the management of IOS system background mechanism and out of service, and other unenforced downloading task just can not start continuous execution automatically.
Under the rule of IOS system, after described downloading task is complete, described application program will be waken up and enter backstage wakeup time by system.In platform wakeup time, application program needs to be sent a notification message to system by the interface function completehandle of IOS system in the rear, with make described application program legal reenter backstage halted state.
And it should be noted that, in the present embodiment, described backstage wakeup time also will be utilized to perform some corresponding subsequent operation, download other downloading task do not completed to realize continuous print.
Preferably, in the rear in platform wakeup time, by preserve complete downloading task download the video file obtained.
Step 103, judge whether in addition unenforced downloading task, if there is unenforced downloading task, then, in the rear in platform wakeup time, perform the delay event preset, to perform described unenforced downloading task.
Completing download in order to realize multitask continuous print on backstage in the present embodiment, in the wakeup time of backstage, the delay event preset can be performed.Even if described application program utilizes backstage wakeup time, perform the operation preset, start described unenforced downloading task.After application program reenters backstage halted state, the downloading task having started to perform can in like manner proceed to download.Circulation said process by that analogy, just can realize multiple downloading task continuous print backstage and download, and without the need to running counter to the rule of IOS system, also need not take unnecessary performance resource, with other players, not occurring any conflict.
If otherwise when judging that discovery does not have other unenforced downloading task, then application program normally enters backstage halted state.
As seen through the above technical solutions, the beneficial effect that the present embodiment exists is: the backstage achieving long-time continuous is downloaded, and without the need to running counter to the rule of IOS system, also need not take unnecessary performance resource, with other players, not occurring any conflict.
Embodiment shown in Fig. 1 is the basic embodiment of method described in the application.On the embodiment shown in Fig. 1, further combined with other optimal technical scheme, another embodiment can also be obtained, as shown in Figure 2 in the application.Method described in the present embodiment will comprise the following steps:
Step 201, pre-establish application program downloading task configuration; Configure based on described downloading task, and in described application program, create the downloading task for particular video file; And perform described downloading task.
Step 202, after described application program enters backstage, then continue to perform the downloading task of current execution; If the downloading task of described current execution is complete, then described application program is waken up and enter backstage wakeup time.
Step 203, judge whether in addition unenforced downloading task, if there is unenforced downloading task, then, in the rear in platform wakeup time, perform the delay event preset, to perform described unenforced downloading task.
Step 204, application program are sent a notification message to system by completehandle interface, enter backstage halted state to make described application program.
The method described in above step 201 ~ step 204, identical with embodiment illustrated in fig. 1, the description of repetition is not done at this.
If the downloading task of the described current execution of step 205 performs failure, then described application program waken up and enter backstage wakeup time.
In step 206, in the rear platform wakeup time, perform the delay event preset, to recover to perform the failed downloading task of described execution.
Step 207, exceed default limits value when described downloading task performs failed number of times, then stop this downloading task of execution, enter step 203.
In above-mentioned steps 205 ~ step 207, describe and failed disposal route is performed for downloading task.Once certain downloading task performs failure, then can in like manner described application program be waken up and enter backstage wakeup time.In the rear within platform wakeup time, the delay event preset is utilized to recover to perform described failed downloading task.If this downloading task performs failed number of times continuously exceeded the limits value preset, then not Reduplicated recovery performs this task, but proceeds to step 203, starts the execution flow process of other downloading task.
As seen through the above technical solutions, the present embodiment is on the basis of previous embodiment, and the beneficial effect existed further is: achieving the processing mode for performing failed downloading task, making described method be provided with good fault-tolerance.
Shown in Figure 3, be the specific embodiment of the system of backstage downloading video files in IOS system described in the application.System described in the present embodiment, for realize embodiment illustrated in fig. 1 described in method.Its technical scheme is consistent with embodiment illustrated in fig. 1 in essence, and the corresponding description in embodiment illustrated in fig. 1, is equally applicable in the middle of the present embodiment.Described in the present embodiment, system comprises:
Configuration module 301, for pre-establishing the downloading task configuration of application program; Configure based on described downloading task, and create the downloading task for particular video file in described application program.
Execution module 302, for performing described downloading task; After described application program enters backstage, continue the downloading task performing current execution; Make the downloading task of described current execution is complete, then described application program waken up and enter backstage wakeup time.
Postponing event module 303, for judging whether in addition unenforced downloading task, if there is unenforced downloading task, then, in the rear in platform wakeup time, performing the delay event preset, to perform described unenforced downloading task.
As seen through the above technical solutions, the beneficial effect that the present embodiment exists is: the backstage achieving long-time continuous is downloaded, and without the need to running counter to the rule of IOS system, also need not take unnecessary performance resource, with other players, not occurring any conflict.
Those skilled in the art should understand, the embodiment of the application can be provided as method, device or computer program.Therefore, the application can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the application can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
Above-mentioned explanation illustrate and describes some preferred embodiments of the application, but as previously mentioned, be to be understood that the application is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the application, then all should in the protection domain of the application's claims.

Claims (10)

1. the method for backstage downloading video files in IOS system, it is characterized in that, described method comprises:
Pre-establish the downloading task configuration of application program; Configure based on described downloading task, and in described application program, create the downloading task for particular video file; And perform described downloading task;
After described application program enters backstage, then continue the downloading task performing current execution; If the downloading task of described current execution is complete, then described application program is waken up and enter backstage wakeup time;
Judge whether in addition unenforced downloading task, if there is unenforced downloading task, then, in the rear in platform wakeup time, perform the delay event preset, to perform described unenforced downloading task.
2. method according to claim 1, it is characterized in that, described video file comprises some slicing files; Then in described downloading task, comprise the subtask of each slicing files corresponding; Then the downloading task of described current execution is complete is specially:
All subtasks in the downloading task of current execution are all complete.
3. method according to claim 2, it is characterized in that, the execution of described subtask is specially:
Judge in described downloading task, whether there is the subtask that the url address of specific slicing files is corresponding;
If existed and the time-out execution of this subtask, then recover to perform this subtask;
If exist and this subtask be cancelled, then restart to perform this subtask;
If exist and this subtask perform, then continue perform this subtask;
If there is no this subtask, then corresponding according to the url address creation of described slicing files subtask, and perform.
4. method according to claim 1, it is characterized in that, described method also comprises:
Application program is sent a notification message to system by completehandle interface, enters backstage halted state to make described application program.
5. method according to Claims 1 to 4 any one, is characterized in that, described method also comprises:
In the rear in platform wakeup time, preserve complete downloading task, download the video file obtained.
6. method according to Claims 1 to 4 any one, is characterized in that, described method also comprises:
If the downloading task of described current execution performs failure, then described application program waken up and enter backstage wakeup time;
In the rear in platform wakeup time, perform the delay event preset, to recover to perform the failed downloading task of described execution.
7. method according to claim 6, it is characterized in that, described method also comprises:
Exceed default limits value when described downloading task performs failed number of times, then stop performing this downloading task.
8. method according to Claims 1 to 4 any one, is characterized in that, described downloading task configuration comprises:
Arrange and whether allow to perform downloading task under cellular network.
9. method according to claim 8, it is characterized in that, described method also comprises:
After the original downloading task of change configures arranging of correspondence, regenerate the configuration of corresponding downloading task.
10. the system of backstage downloading video files in IOS system, it is characterized in that, described system comprises:
Configuration module, for pre-establishing the downloading task configuration of application program; Configure based on described downloading task, and in described application program, create the downloading task for particular video file;
Execution module, for performing described downloading task; After described application program enters backstage, continue the downloading task performing current execution; Make the downloading task of described current execution is complete, then described application program waken up and enter backstage wakeup time;
Postponing event module, for judging whether in addition unenforced downloading task, if there is unenforced downloading task, then, in the rear in platform wakeup time, performing the delay event preset, to perform described unenforced downloading task.
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