CN105335242B - The method and system of backstage to download video files in IOS system - Google Patents

The method and system of backstage to download video files in IOS system Download PDF

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Publication number
CN105335242B
CN105335242B CN201510734223.5A CN201510734223A CN105335242B CN 105335242 B CN105335242 B CN 105335242B CN 201510734223 A CN201510734223 A CN 201510734223A CN 105335242 B CN105335242 B CN 105335242B
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downloading task
backstage
application program
execute
downloading
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CN105335242A (en
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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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    • 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

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  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

This application discloses a kind of methods of backstage to download video files in IOS system, comprising: pre-establishes the downloading task configuration of application program;It is configured based on the downloading task, and creation is directed to the downloading task of particular video file in the application program;And execute the downloading task;After the application program enters backstage, then currently performed downloading task is continued to execute;If the currently performed downloading task executes completion, the application program is waken up and enters backstage wakeup time;Judge whether the downloading task being also not carried out, if there is the downloading task being not carried out, then in the backstage wakeup time, execute preset delay event, with the downloading task being not carried out described in execution.The application realizes continuous backstage for a long time and downloads, and without violating the rule of IOS system, need not also occupy extra performance resource, the processing mode of the downloading task for executing failure is realized, so that the method is provided with good fault-tolerance.

Description

The method and system of backstage to download video files in IOS system
Technical field
This application involves fields of communication technology, specifically, being related to a kind of side of backstage to download video files in IOS system Method and system.
Background technique
In IOS system, there is very unique running background mechanism.System is capable of answering running background for intelligence It is managed with program, limits the operation of background program, to a certain extent to guarantee the stabilization and smoothness of system entirety.According to The rule of IOS system, it is most other than the minority such as positioning or music needs the program of long-time running background Program can be automatically switched off after falling back on backstage certain time.
The application program of current many network video classes, will can be seen offline in the locally downloading storage of video file It sees.But it is based on IOS system convention described above, video class application program cannot achieve for a long time, under the backstage of multitask Load process.And if downloading process is placed in front stage operation, it will affect user during downloading using other applications, lead User experience is caused to reduce.
Some application programs use, and the mode of noiseless music is played in downloading process, allows application program long-term Running background, to realize unrestricted backstage downloading.But the defect of this method is equally clearly.On the one hand it can account for With a large amount of performance resource, power consumption is improved, the stability and fluency of system are influenced.On the other hand, be also likely to it is regular Music player clashes.And importantly, taking the application program of similar mechanism, it is likely that IOS system can not be passed through The official of system audits.
As it can be seen that lacking one kind in the prior art under IOS system, long-time, the backstage downloading view of multitask can be realized The method of frequency file.
Summary of the invention
In view of this, the technical problem to be solved by the application is to provide foradownloaded video texts in backstage in a kind of IOS system The method and system of part by executing delay event within the backstage wakeup time of application program, and realize that multitask is continuous Backstage downloading.
In order to solve the above-mentioned technical problem, the application has following technical solution:
A kind of method of backstage to download video files in IOS system, which comprises
Pre-establish the downloading task configuration of application program;It is configured based on the downloading task, and in the application program Middle creation is directed to the downloading task of particular video file;And execute the downloading task;
After the application program enters backstage, then currently performed downloading task is continued to execute;If described current The downloading task of execution executes completion, then wakes up the application program and enter backstage wakeup time;
Judge whether the downloading task being also not carried out, if there is the downloading task being not carried out, is then waken up on the backstage In time, preset delay event is executed, with the downloading task being not carried out described in execution.
Preferably, the video file includes several slicing files;Then in the downloading task, including each fragment of correspondence The subtask of file;Then the currently performed downloading task executes completion specifically:
All subtasks in currently performed downloading task are performed both by completion.
Preferably, the execution of the subtask specifically:
Judge in the downloading task, if having existed the corresponding subtask in the address url of specific slicing files;
If there is and the subtask pause execute, then restore to execute the subtask;
If there is and the subtask be cancelled, then restart to execute the subtask;
If there is and the subtask be carrying out, then continue to execute the subtask;
If there is no the subtask, then according to the corresponding subtask of url address creation of the slicing files, and hold Row.
Preferably, the method also includes:
Application program is sent a notification message by completehandle interface to system, so that the application program enters Backstage halted state.
Preferably, the method also includes:
In the backstage wakeup time, the downloading task for executing and completing, the video file downloaded are saved.
Preferably, the method also includes:
If the currently performed downloading task executes failure, the application program is waken up and enters backstage and is called out It wakes up the time;
In the backstage wakeup time, preset delay event is executed, to restore to execute the downloading for executing failure Task.
Preferably, the method also includes:
It is more than preset limits value when the downloading task executes the number to fail, then stops executing the downloading task.
Preferably, the downloading task, which configures, includes:
Whether setting allows to execute downloading task under cellular network.
Preferably, the method also includes:
After changing original downloading task configuration corresponding setting, corresponding downloading task configuration is regenerated.
Preferably, the system comprises:
Configuration module, the downloading task for pre-establishing application program configure;It is configured based on the downloading task, and Creation is directed to the downloading task of particular video file in the application program;
Execution module, for executing the downloading task;After the application program enters backstage, continue to execute current The downloading task of execution;Executed in the currently performed downloading task and complete to make, then by the application program wake up and into Enter backstage wakeup time;
Postpone event module, for judging whether the downloading task being also not carried out, if there is the downloading task being not carried out, Then in the backstage wakeup time, preset delay event is executed, with the downloading task being not carried out described in execution.
Compared with prior art, method and system described herein achieving the following effects:
It realizes continuous backstage for a long time to download, and the rule without violating IOS system, it is extra also to occupy With other players does not occur for performance resource any conflict.The processing mode for realizing the downloading task for executing failure, makes It obtains the method and is provided with good fault-tolerance.
Certainly, any product for implementing the application must be not necessarily required to reach all the above technical effect simultaneously.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the embodiment of the present application the method flow chart;
Fig. 2 is another embodiment the method flow chart of the application;
Fig. 3 is system structure diagram described in the embodiment of the present application.
Specific embodiment
As used some vocabulary to censure specific components in the specification and claims.Those skilled in the art answer It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name The difference of title is as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation.Such as logical The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit In "." substantially " refer within the acceptable error range, those skilled in the art can within a certain error range solve described in Technical problem basically reaches the technical effect.In addition, " coupling " word includes any direct and indirect electric property coupling herein Means.Therefore, if it is described herein that a first device is coupled to a second device, then representing the first device can directly electrical coupling It is connected to the second device, or the second device indirectly electrically coupled through other devices or coupling means.Specification Subsequent descriptions be implement the application better embodiment, so it is described description be for the purpose of the rule for illustrating the application, It is not intended to limit the scope of the present application.The protection scope of the application is as defined by the appended claims.
In IOS system, application program enters after backstage, can be according to the backstage rule of IOS system, in the active fortune in backstage Row a period of time, then automatically into backstage halted state.But, the downloading task which executes originally still can be after Continuous execution.After completing the downloading task that the script executes, after which can be waken up and be fed them by system Platform wakeup time.
After backstage wakeup time is system wake-up application program, for time of its one section of reserved operation, do not surpass generally Spend 30 seconds.Application program can carry out certain operation within this period, such as save and complete the obtained file of downloading task Deng.And application program also needs during this period of time, by the interface function completehandle of IOS system come legal Reenter backstage halted state.Otherwise it can be considered and violate system convention, cause application crash.
The application is based on the backstage wakeup time, and realizing long-time, multitask, continuously downloading regards from the background Frequency file.
It is shown in Figure 1, it is the specific embodiment of the method for backstage to download video files in herein described IOS system. Method described in the present embodiment the following steps are included:
Step 101, the downloading task configuration for pre-establishing application program;It is configured based on the downloading task, and described Creation is directed to the downloading task of particular video file in application program;And execute the downloading task.
The downloading task configuration is referred to for the prepared certain specific settings of video file downloading task.For example, The downloading task configuration includes: whether setting allows to execute downloading task under cellular network.The characteristics of according to IOS system, When to change original corresponding setting of downloading task configuration, can not modify in the configuration of original downloading task, and It is that must regenerate corresponding downloading task configuration.
The setting that the application program can be configured based on the downloading task, for particular video file, creation downloading Task is watched in the locally downloading storage of the video file convenient for offline.When selected video file quantity is more It is a, then it is necessary for each video file and creates a downloading task accordingly.And then execute the downloading task, that is, start into The downloading of row video file.
If application program is maintained at system front stage operation, each downloading task can necessarily remain execution shape State, and after completing a downloading task, automatically execute other downloading tasks.But how for a long time, multitask is continuous Backstage complete downloading, be the present embodiment technical problems to be solved.
It should be noted that video file generally comprises several slicing files.Then in a downloading task, need include Several subtasks, one slicing files of each corresponding downloading in subtask.And all subtasks in downloading task are performed both by When completion, this means that the downloading task is completed.
The execution of the subtask specifically:
Judge in the downloading task, if having existed the corresponding subtask in the address url of specific slicing files;
If there is and the subtask pause execute, then restore to execute the subtask;
If there is and the subtask be cancelled, then restart to execute the subtask;
If there is and the subtask be carrying out, then continue to execute the subtask;
If there is no the subtask, then according to the corresponding subtask of url address creation of the slicing files, and hold Row.
Step 102, after the application program enters backstage, then continue to execute currently performed downloading task;If The currently performed downloading task executes completion, then wakes up the application program and enter backstage wakeup time.
Application program enters after system background, can be according to the backstage rule of IOS system, when actively running one section from the background Between, then automatically into backstage halted state.The backstage active time that general IOS7 system allows is 10 minutes, and IOS8 system allows Backstage active time be 3 minutes.
But, even if application program enters after the halted state of backstage, the downloading task being currently executing still can be with It continues to execute.But in the prior art, when the application program enters system background, the downloading task being carrying out is executed After completion, application program is subject to the management of IOS system background mechanism and out of service, other downloading tasks being not carried out Just can not automatically start to continuously perform.
Under the rule of IOS system, after the downloading task, which executes, to be completed, system will be by the application program It wakes up and enters backstage wakeup time.Application program needs the interface letter by IOS system in the backstage wakeup time Number completehandle sends a notification message to system, so that legal the reentering of the application program stops shape from the background State.
And it should be noted that will also be executed using the backstage wakeup time certain corresponding subsequent in the present embodiment Operation continuously downloads other unfinished downloading tasks to realize.
Preferably, in the backstage wakeup time, the video for executing the downloading task of completion and downloading will be saved File.
Step 103 judges whether the downloading task being also not carried out, if there is the downloading task being not carried out, then described In the wakeup time of backstage, preset delay event is executed, with the downloading task being not carried out described in execution.
In order to realize that multitask continuously completes downloading on backstage in the present embodiment, can be held in the wakeup time of backstage The preset delay event of row.Even if the application program utilizes backstage wakeup time, preset operation is executed, is started described The downloading task being not carried out.After application program reenters backstage halted state, the downloading task of execution is had begun i.e. It can similarly continue to download.And so on the circulation above process, just can be realized the continuous backstage of multiple downloading tasks Downloading, and the rule without violating IOS system, need not also occupy extra performance resource, not occur to appoint with other players What conflicts.
If application program normally enters backstage and stops shape otherwise when judging the downloading task that discovery is not carried out without other State.
As seen through the above technical solutions, beneficial effect existing for the present embodiment is: realizing continuous backstage for a long time Downloading, and the rule without violating IOS system, need not also occupy extra performance resource, not occur to appoint with other players What conflicts.
Embodiment shown in FIG. 1 is the basic embodiment of herein described method.It can be with shown in Fig. 1 in the application Embodiment on, further combined with other optimal technical schemes, obtain another embodiment, as shown in Figure 2.Institute in the present embodiment State method will the following steps are included:
Step 201, the downloading task configuration for pre-establishing application program;It is configured based on the downloading task, and described Creation is directed to the downloading task of particular video file in application program;And execute the downloading task.
Step 202, after the application program enters backstage, then continue to execute currently performed downloading task;If The currently performed downloading task executes completion, then wakes up the application program and enter backstage wakeup time.
Step 203 judges whether the downloading task being also not carried out, if there is the downloading task being not carried out, then described In the wakeup time of backstage, preset delay event is executed, with the downloading task being not carried out described in execution.
Step 204, application program are sent a notification message by completehandle interface to system, so that the application Program enters backstage halted state.
Method described in 201~step 204 of above step, it is identical as embodiment illustrated in fig. 1, do not do duplicate retouch herein It states.
If step 205, the currently performed downloading task execute failure, by the application program wake up and into Enter backstage wakeup time.
Step 206, in the backstage wakeup time, execute preset delay event, described execute mistake to restore to execute The downloading task lost.
Step 207, when the downloading task execute failure number be more than preset limits value, then stop executing the downloading Task enters step 203.
In 205~step 207 of above-mentioned steps, the processing method that failure is executed for downloading task is described.Once some Downloading task executes failure, then can similarly wake up the application program and enter backstage wakeup time.It is called out on the backstage It wakes up within the time, restores the downloading task for executing the failure using preset delay event.If the downloading task is continuously held The number of row failure has been more than preset limits value, then the recovery being not repeated executes the task, but is transferred to step 203, opens The execution process for other downloading tasks that begin.
As seen through the above technical solutions, the present embodiment is further existing beneficial to effect on the basis of previous embodiment Fruit is: the processing mode of the downloading task for executing failure is realized, so that the method is provided with good fault-tolerance.
It is shown in Figure 3, it is the specific embodiment of the system of backstage to download video files in herein described IOS system. System described in the present embodiment, for realizing method described in embodiment illustrated in fig. 1.Its technical solution substantially with Fig. 1 institute Show that embodiment is consistent, the corresponding description in embodiment illustrated in fig. 1 is equally applicable in the present embodiment.Described in the present embodiment System includes:
Configuration module 301, the downloading task for pre-establishing application program configure;It is configured based on the downloading task, And creation is directed to the downloading task of particular video file in the application program.
Execution module 302, for executing the downloading task;After the application program enters backstage, continue to execute Currently performed downloading task;It is executed in the currently performed downloading task and completes to make, then waken up the application program simultaneously And enter backstage wakeup time.
Postpone event module 303, for judging whether the downloading task being also not carried out, if there is the downloading being not carried out is appointed Business, then in the backstage wakeup time, execute preset delay event, with the downloading task being not carried out described in execution.
As seen through the above technical solutions, beneficial effect existing for the present embodiment is: realizing continuous backstage for a long time Downloading, and the rule without violating IOS system, need not also occupy extra performance resource, not occur to appoint with other players What conflicts.
It should be understood by those skilled in the art that, embodiments herein can provide as method, apparatus or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.
Above description shows and describes several preferred embodiments of the present application, but as previously described, it should be understood that the application Be not limited to forms disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through within that scope of the inventive concept describe herein It is modified.And changes and modifications made by those skilled in the art do not depart from spirit and scope, then it all should be in this Shen It please be in the protection scope of appended claims.

Claims (10)

1. a kind of method of backstage to download video files in IOS system, which is characterized in that the described method includes:
Pre-establish the downloading task configuration of application program;It is configured based on the downloading task, and is created in the application program Build the downloading task for particular video file;And execute the downloading task;
After the application program enters backstage, then currently performed downloading task is continued to execute;If the current execution Downloading task execute completion, then by the application program wake up and enter backstage wakeup time;
Judge whether the downloading task being also not carried out, if there is the downloading task being not carried out, then in the backstage wakeup time It is interior, preset delay event is executed, with the downloading task being not carried out described in execution.
2. method according to claim 1, which is characterized in that the video file includes several slicing files;Under then described In load task, the subtask including each slicing files of correspondence;Then the currently performed downloading task executes completion specifically:
All subtasks in currently performed downloading task are performed both by completion.
3. method according to claim 2, which is characterized in that the execution of the subtask specifically:
Judge in the downloading task, if having existed the corresponding subtask in the address url of specific slicing files;
If there is and the subtask pause execute, then restore to execute the subtask;
If there is and the subtask be cancelled, then restart to execute the subtask;
If there is and the subtask be carrying out, then continue to execute the subtask;
If there is no the subtask, then according to the corresponding subtask of url address creation of the slicing files, and execute.
4. method according to claim 1, which is characterized in that the method also includes:
Application program is sent a notification message by completehandle interface to system, so that the application program enters backstage Halted state.
5. any one the method according to claim 1~4, which is characterized in that the method also includes:
In the backstage wakeup time, the video file that the downloading task for executing and completing is downloaded is saved.
6. any one the method according to claim 1~4, which is characterized in that the method also includes:
If the currently performed downloading task executes failure, when the application program being waken up and entering backstage wake-up Between;
In the backstage wakeup time, preset delay event is executed, to restore to execute the downloading task for executing failure.
7. method according to claim 6, which is characterized in that the method also includes:
It is more than preset limits value when the downloading task executes the number to fail, then stops executing the downloading task.
8. any one the method according to claim 1~4, which is characterized in that the downloading task, which configures, includes:
Whether setting allows to execute downloading task under cellular network.
9. method according to claim 8, which is characterized in that the method also includes:
After changing original downloading task configuration corresponding setting, corresponding downloading task configuration is regenerated.
10. the system of backstage to download video files in a kind of IOS system, which is characterized in that the system comprises:
Configuration module, the downloading task for pre-establishing application program configure;It is configured based on the downloading task, and described Creation is directed to the downloading task of particular video file in application program;
Execution module, for executing the downloading task;After the application program enters backstage, current execution is continued to execute Downloading task;When the currently performed downloading task executes completion, then after the application program being waken up and is entered Platform wakeup time;
Delay event module if there is the downloading task being not carried out, then exists for judging whether the downloading task being also not carried out In the backstage wakeup time, preset delay event is executed, with the downloading task being not carried out described in execution.
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