This paper mainly say WP7 mobile phone an important characteristic, that is for the background of the task control, this is the most important for ordinary users, but first statement is not to say that the mango of in the new update more task switching mechanism of the tombstone, but WP7 to run in the background of the program of the various restrictions, through the understanding of these restrictions may see WP7 is how to help consumers in the Android platform out rogue software secretly run of the mouth of the background grievances.
Many tasks run all learned, from Windows system to the old Windows Mobile and Android support real-time multitasking mechanism. We can side to listen to music while surfing the Internet, playing games also could fit side out talk a QQ, but it also gives ordinary users brought troubles and the horse mouth its taobao official client, for example, all kinds of his not being backstage greeting, closed all need to push function or as open not mistake. Steal flow, accounting for memory does not say, some programs even their own join system service columns, let users can't conventional means closed, feel the developers live good tired, but WP7 chimed these people on the last day of the bell. Because the whole WP7 system for the background task a strict and harsh limit.
From system design for, WP7 background Task is divided into two kinds, Periodic Task (cycle Task) and Resource Intensive Task (Resource Intensive tasks), the former used for program update in the background Live Tile, or networking check a weather update this small tasks, the latter for online download this need long time the execution of the large Task.
(1) a program can not open the background, all depends on the choice of user
In the system constitution, specifically for a program to control the background, all want to run in the background of the program will be listed in pieces here, want to enter through the back door? Ask users to allow don't allow it, here, you can see all the program except list, also can see the program in the development in the background of the reason why, all program is like a do something wrong child waiting for their father and mother.
(2) the program for the users not attract, opened the background will shut down
WP7 system regulation, all the background of the task force time only 14 days, that is, 14 days period, if you never open the procedure, the system will automatically shut off the program of the background. For example you download a novelty to the application of the first time you open it when it opened the background mechanism, but poor it the production too poor to you for the rest of the 14 days not to open it. And because the work busy, you don't have to check the Settings of the background task list. Well that's all right, the system automatically close this boy.
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