Screen lock control method and device for mobile terminal

Abstract

The invention discloses a method and a device for locking a screen of a mobile terminal. The method comprises: after a power management module receives a screen locking instruction, the screen of the mobile terminal is shut off through a mobile phone window management module, calling the screen of a screen locking module to shut off a motion interface, and shutting off light of the screen and update of and screen, the screen locking module establishing a screen locking interface; the screen locking module sending a first application for a lock to awaken a CPU and a second application for a lock to awaken the CPU to the power management module, and establishing a screen locking interface during the awakening period of the first application for a lock to awaken a CPU, refreshing a new screen locking interface during the awakening period of the second application for a lock to awaken the CPU; the screen locking module respectively sending a first lock for releasing CPU awakening and a second lock for releasing CPU awakening to the power management module, and the power management module shutting off the CPU after the power management module releases the lock for awakening the CPU, shutting off the CPU. The method makes a user see a screen locking interface at first time of lightening of the screen.

Description

technical field [0001] The present invention relates to the technical field of mobile terminal equipment, in particular to a method and device for controlling a lock screen of a mobile terminal. Background technique [0002] At present, the lock screen process of the mobile terminal of the Android operating system is mainly completed through the following steps: first, when the user presses the power button and wants to sleep the mobile terminal, the power management module PowerManager in the mobile terminal will detect that the power button is pressed, And judge whether to sleep the mobile terminal or wake up the mobile terminal according to the current system state. If the mobile terminal sleeps, PowerManager will start the sleep process method sendGoToSleepBroadcast(). In this process method, the process interface screenTurnedOff() for creating the lock screen will be called first, and then the process interface ActivityManagerNative.getDefault().goingToSleep() for syst...

AI Technical Summary

Problems solved by technology

[0004] However, the current problems are: (1) Since the original process of Android uses a separate process for the creation and display of the lock screen, it will cause some problems with the main thread that cannot guarantee the order of work; (2) In the sleep process of the mobile terminal in the above process, the closing process of the CPU and screen of the mobile terminal and the creation process of the lock screen interface are carried out at the same time. Although the lock screen has applied for a CPU lock to ensure that its own code can be completed, the lock screen interface It is very likely that it will not be able to draw completely and the whole system will sleep

And, if the mobile terminal screen has a half-bright mode, then when the mobile terminal enters sleep, the user cannot see the interface of the lock screen; The screen can only be refreshed after waking up. This process will delay the display of the lock screen interface. If the mobile terminal is stuck in the system, it may not be able to see the lock screen when the screen is turned on, but it will be delayed for hundreds of milliseconds before seeing the lock screen. screen interface

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