CN105204949B - Method and device for actively triggering system broadcast in encryption process of mobile phone secure digital card - Google Patents
Method and device for actively triggering system broadcast in encryption process of mobile phone secure digital card Download PDFInfo
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Abstract
The invention provides a method for actively triggering system broadcast in the encryption process of a mobile phone secure digital card, which comprises the following steps: setting a monitoring object in a database; monitoring the monitored object; and sending out a broadcast when the value of the monitored object changes. The invention also provides a device for actively triggering the system broadcast. The method and the device for actively triggering the system broadcast can meet the requirement of actively acquiring the system broadcast information by a user, and are simple and convenient.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a method and an apparatus for actively triggering system broadcast.
Background
Currently, an operating system such as an Android (Android) system is widely used in terminal devices such as mobile phones and tablet computers. Broadcast (Broadcast) is a mechanism for propagating information between system components, and serves as interprocess communication. In the process of developing an application product, an application developer generally needs to obtain system information, such as network state change information, battery change information, system setting change information, and the like, and such system information is provided to the application developer through broadcasting.
Taking the system broadcasting the Battery variation information as an example, the relevant variables of the Battery variation information mainly include Battery Status (e.g. un low, CHARGING, DISCHARGING, NOT CHARGING, FULL), Battery health (e.g. un low, GOOD, OVER, DEAD, OVER _ OVER, unsep Battery _ FAILURE, club), Battery level, Battery Voltage, Battery Temperature, etc. The variables are stored in a similar BatteryService. Java, the battery service is created by the SystemServer, providing battery related service in the system, registering the UE event related to the battery data change when the system server creates the constructor of Battery service, when the relevant data of the battery changes, a UEvent event is triggered, the system calls an onevent function of mPowerSuperPluyObserver, calling the update function in the onservent function, calling the native _ update function through JNI, reading the battery related data from/sys/class/power _ supply, and saved into the relevant variables of BatteryService, then the processValue function is called to send the battery change information to the application program layer by broadcasting for the application developer to use, the broadcast items related to the BATTERY change information include ACTION _ BATTERY _ CHANGED, ACTION _ POWER _ CONNECTED, ACTION _ POWER _ DISCONNECTED, ACTION _ BATTERY _ LOW, ACTION _ BATTERY _ key, among them, active _ BATTERY _ CHANGED is used more.
If the application developer wants to obtain the battery change information of the system broadcast, the application developer needs to register broadcastreserver in the Activity component or Service component through the application program, for example, an onreceivefunction can be realized by setting a new broadcastreserver object to complete the processing of the broadcast data after receiving the broadcast required to be monitored, and then the application developer registers in an onCreate constructor. After the application developer registers broadcastreserver, the relevant information of the system broadcast can be acquired through broadcastreserver.
However, the information of the system broadcast can only be obtained passively in the above manner, that is, the application developer can only obtain the relevant information when the system sends out the broadcast, and the application developer cannot actively trigger the system to send out the broadcast when the system does not send out the broadcast. Therefore, the above method cannot satisfy the requirement that an application developer wants to actively acquire the information broadcasted by the system.
Disclosure of Invention
In view of this, the present invention provides a method and an apparatus for actively triggering system broadcast, so as to satisfy the requirement of a user for actively acquiring system broadcast information.
Specifically, an embodiment of the present invention provides a method for actively triggering system broadcast, where the method includes setting a monitoring object in a database; monitoring the monitored object; and sending out a broadcast when the value of the monitored object changes.
Preferably, the setting of the interception object in the database includes adding a field related to system information as the interception object, wherein the system information includes network status change information, battery change information, or system setting change information.
Preferably, the listening to the listening object comprises: creating a content viewer; and the content observer listens to the listening object.
Preferably, the interception object is intercepted in a service component that processes the system information.
Preferably, the service component includes ConnectivityService or BatteryService.
Preferably, the database is a Settings database.
Preferably, the method further comprises: setting a permission to write data in the database; and modifying a value of the listening object to trigger the broadcast.
Preferably, the method further comprises: a broadcast recipient is registered to receive the broadcast.
An embodiment of the present invention provides an apparatus for actively triggering system broadcast, including: the monitoring object setting module is used for setting a monitoring object in the database; the monitoring module is used for monitoring the monitored object; and the broadcast module is used for sending out broadcast when the value of the monitored object changes.
Preferably, the monitoring object setting module includes a field adding module, configured to add a field related to system information as the monitoring object, where the system information includes network state change information, battery change information, or system setting change information.
Preferably, the monitoring module includes a creating module for creating a content observer to monitor the monitored object by the content observer.
Preferably, the monitoring module is further configured to monitor the monitored object in a service component that processes the system information.
Preferably, the apparatus further comprises: the permission setting module is used for setting permission of writing the data in the database; and a modification module for modifying the value of the listening object to trigger the broadcast.
Preferably, the apparatus further comprises a registration module for registering a broadcast recipient to receive the broadcast.
The method and the device for actively triggering the system broadcast provided by the embodiment of the invention monitor the monitoring object by setting the monitoring object in the database, and the system sends out the broadcast when the value of the monitoring object changes, so that when a user wants to acquire the related system information, the user only needs to modify the value of the monitoring object in the database through a system interface, and the system can be actively triggered to send out the broadcast of the related system information, and the method and the device are simple and convenient.
In order to make the technical solutions and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a flowchart illustrating a method for actively triggering system broadcast according to a first embodiment of the present invention.
Fig. 2 is a flow diagram illustrating major sub-steps of a step of the method for actively triggering system broadcast shown in fig. 1.
Fig. 3 is a flow chart illustrating further steps of the method of actively triggering system broadcasts shown in fig. 1.
Fig. 4 is a block diagram of an apparatus for actively triggering system broadcast according to a second embodiment of the present invention.
FIG. 5 is a diagram of an exemplary application environment provided by the present invention.
Detailed Description
To further clarify the technical measures and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given of specific embodiments, methods, steps, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
The method and the device for actively triggering the system broadcast provided by the embodiment of the invention are mainly used in an operating system of terminal equipment. The terminal device comprises a mobile phone, a tablet computer, a personal computer and the like, and the operating system can be an android system, for example.
First embodiment
A first embodiment provides a method for actively triggering system broadcast, which is applicable to an operating system. FIG. 1 is a schematic flow chart of the above method. Referring to fig. 1, the method of the present embodiment includes the following steps:
step S11, setting monitoring objects in the database;
in this step, a monitoring object is set in a database of the system according to the system information to be broadcasted. The database may be a Settings database of the system, and the system information may include network state change information, battery change information, or system setting change information, which is convenient for a user (e.g., an application developer) to know the state of the system bottom layer. Specifically, a field related to system information may be added as the interception target.
Taking the system information required to be broadcasted as the BATTERY change information as an example, in this step, a field GET _ BATTERY _ INFO may be added to the Settings database, where the storage path of the field and the related codes is frame/base/core/java/android/provider/Settings.
public static final String GET_BATTERY_INFO＝"get_battery_info"
Step S12, monitoring the monitoring object;
in this step, the interception object may be intercepted in a service component that processes system information. The service component includes, for example, ConnectivityService or BatteryService, etc. The service component ConnectivityService is mainly used for processing network state change information, such as monitoring and broadcasting the network state change information; the service component battteryservice is mainly used for processing the battery change information, such as monitoring and broadcasting the battery change information.
Referring to fig. 2, the step S12 includes the following sub-steps:
substep S121, creating a content viewer;
still taking the system information to be broadcasted as the battery change information as an example for explanation, in this step, a content observer contentobserver may be created in the service component BatteryService, and the relevant codes are as follows:
in sub-step S122, the content observer listens to the listening object.
In this step, the interception object may be intercepted by the content observer in a constructor of a service component that processes system information. For example, the content watcher contentobserver listens to the field GET _ BATTERY _ INFO in the constructor of the service component BatteryService, and the relevant codes are as follows:
mContext.getContentResolver().registerContentObserver(Settings.System.CONTENT_URI,true,mContentObserver)
in the above example, the storing path of the relevant code of the listening field GET _ BATTERY _ INFO is frames/base/services/java/com/android/server/batteryserver.
And step 13, when the value of the monitoring object changes, the system sends out a broadcast.
In this step, when the content viewer monitors that the value of the monitored object changes, the related service component is triggered to send out a broadcast. For example, when the content observer contentobserver monitors that the value of the field GET _ BATTERY _ INFO changes, the service component BatteryService reads the BATTERY related data from/sys/class/power _ supply, stores the BATTERY related data in the related variable, and then calls a related function, such as a processValue function, to send the BATTERY change information by broadcasting.
Therefore, when a user wants to actively acquire system information, the value of the monitored object in the database can be modified through the system interface, and the system is actively triggered to broadcast the related system information.
In this embodiment, in order to facilitate the user to actively trigger the system to send out the broadcast of the related system information by modifying the value of the monitored object, please refer to fig. 3, the method further includes the following steps:
step S14, setting permission for writing data in the database;
in this step, the user may be given the right to modify the value of the listener object by setting the right to allow writing of data in the database. For example, android permission write _ SETTINGS, i.e., representing setting of permissions to write data in the SETTINGS database, is added to the android manifest.
Step S15, modifying the value of the listening object to trigger the broadcast.
In this step, after the permission to write the data in the database is set, the user may modify the listening object previously set in the database to actively trigger the system to send the broadcast. For example, if the user wants to actively obtain the BATTERY variation information, the value of the field GET _ BATTERY _ INFO previously set in the Settings database may be modified, and the relevant codes are as follows:
ContentResolver contentResolver＝getContentResolver()；
Settings.System.putInt(contentResolver,battery,23)
thus, after the value of the field GET _ BATTERY _ INFO in the Settings database is modified, the content observer contentobserver in the service component BatteryService can monitor that the value of the field GET _ BATTERY _ INFO changes, thereby actively triggering the system to send out the broadcast of the BATTERY change information.
Thereafter, by registering a broadcast recipient in the system, the user can acquire the broadcast sent out by the system. For example, broadcast receiver broadcastreserver may be registered in an Activity component or a Service component through an application, for example, an onreceivefunction may be implemented by setting a new broadcastreserver object to complete processing of broadcast data after receiving a broadcast requiring monitoring, and then registration is performed in an onCreate constructor (for Activity), and after a user registers broadcastreserver, related information of system broadcast may be acquired through broadcastreserver. Taking the broadcast for acquiring the battery change information as an example, by setting a new broadcastupdate object, the relevant codes for implementing an onReceive function are as follows:
the relevant code that is then registered in the onCreate constructor is as follows:
IntentFilter filter＝new IntentFilter()；
filter.addAction(Intent.ACTION_BATTERY_CHANGED)；
mContext.registerReceiver(mIntentReceiver,filter)
after the registration is completed, the user can acquire the broadcast of the battery change information sent by the system.
In this embodiment, because the method for actively triggering system broadcast sets a monitoring object in the database to monitor the monitoring object, and the system sends out broadcast when the value of the monitoring object changes, when a user wants to acquire related system information, the system can be actively triggered to send out broadcast of related system information only by modifying the value of the monitoring object in the database through the system interface, which is simple and convenient.
Second embodiment
A second embodiment provides an apparatus for actively triggering system broadcast, which is suitable for an operating system. Fig. 4 is a block diagram showing the structure of the above-mentioned device. Referring to fig. 4, the apparatus of the present embodiment includes a monitored object setting module 21, a monitoring module 22, and a broadcasting module 23.
The interception object setting module 21 is configured to set an interception object in a database. Specifically, the interception object setting module 21 sets an interception object in a database of the system according to the system information to be broadcasted. The database may be a Settings database of the system, and the system information may include network state change information, battery change information, or system setting change information, which is convenient for a user (e.g., an application developer) to know the state of the system bottom layer.
The interception object setting module 21 includes a field adding module 210, where the field adding module 210 is configured to add a field related to system information as the interception object, for example, if the system information to be broadcasted is BATTERY change information, the interception object setting module 21 may add a field GET _ BATTERY _ INFO in a Settings database through the field adding module 210.
The listening module 22 is configured to listen to the listening object, and further configured to listen to the listening object in a service component that processes related system information. The service component includes, for example, ConnectivityService or BatteryService, etc. The service component ConnectivityService is mainly used for processing network state change information, such as monitoring and broadcasting the network state change information; the service component battteryservice is mainly used for processing the battery change information, such as monitoring and broadcasting the battery change information.
The listening module 22 includes a creation module 220, the creation module 220 being configured to create a content viewer for listening to the listening object by the content viewer. For example, if the system information to be broadcasted is BATTERY change information, the monitoring module 22 creates a content watcher contentobser in the service component BatteryService through the creating module 220, and the content watcher contentobser monitors a field GET _ BATTERY _ INFO in a constructor of the service component BatteryService.
The broadcast module 23 is used to send out broadcast when the value of the monitored object changes. For example, when the content viewer contentobserver monitors that the value of the field GET _ BATTERY _ INFO changes, the broadcast module 23 reads the BATTERY related data from/sys/class/power _ supply, stores the BATTERY related data in the related variable, and then calls a related function, such as a process value function, to transmit the BATTERY change information by broadcasting.
The apparatus further comprises a rights setting module 24 and a modification module 25.
The permission setting module 24 is used to set permissions allowing writing of data in the database. That is, when a user wants to actively obtain system information, the value of the monitored object in the database can be modified through the system interface, so that the user needs to set the permission for writing data in the database through the permission setting module 24 to obtain the permission for modifying the value of the monitored object in order to facilitate the user to actively trigger the system to broadcast the related system information by modifying the value of the monitored object. For example, after adding android.
The modification module 25 is used to modify the value of the listening object to trigger a broadcast. After the permission to write the data in the database is set, the user can modify the listening objects previously set in the database through the modification module 25 to actively trigger the system to send the broadcast. For example, if the user wants to actively obtain the BATTERY change information, the modification module 25 may modify the value of the field GET _ BATTERY _ INFO previously set in the Settings database, and after the value of the field GET _ BATTERY _ INFO in the Settings database is modified, the content observer contentobserver may monitor that the value of the field GET _ BATTERY _ INFO changes, thereby actively triggering the system to send out the broadcast of the BATTERY change information.
In addition, the apparatus includes a registration module 26. The registration module 26 is used to register broadcast recipients to receive broadcasts from the system. By the registration module 26 registering the broadcast receiver in the system, the user can acquire the broadcast sent by the system. For example, broadcast receiver broadcastreserver may be registered in the Activity component or Service component through the registration module 26, for example, a new broadcastreserver object may be set to implement an onReceive function to complete processing of broadcast data after receiving a broadcast requiring monitoring, and then registration is performed in an onCreate constructor (for Activity), and after a user registers broadcastreserver, relevant information of system broadcast may be acquired through broadcastreserver.
In this embodiment, since the apparatus for actively triggering system broadcast sets a monitoring object in the database through the monitoring object setting module 21, monitors the monitoring object through the monitoring module 22, and when the value of the monitoring object changes, the system sends out broadcast through the broadcasting module 23, when a user wants to obtain related system information, the user only needs to modify the value of the monitoring object in the database through the system interface, and the system can be actively triggered to send out broadcast of related system information, which is simple and convenient.
Third embodiment
Currently, an SD Card (Secure Digital Memory Card) is commonly used in a mobile phone. In order to ensure the security of the data stored in the SD card, a user can encrypt the SD card through an encryption software. The encrypted SD card can only read data through the mobile phone, and if the mobile phone or the SD card is lost, the data in the SD card cannot be obtained even if the SD card is placed in other mobile equipment. Generally, the encryption process of the SD card by the encryption software lasts for a long time, such as more than 20 minutes. In the process, if the system is powered off due to a battery problem, such as insufficient power, encryption failure is caused, and therefore, battery change information needs to be acquired in real time. The embodiment is an example of acquiring battery change information by using the method and the device for actively triggering system broadcast provided by the invention in the encryption process of the SD card, and fig. 5 is an application environment schematic diagram of the example.
As shown in fig. 5, firstly, a system customizer needs to set a monitoring object setting module 21 and a monitoring module 22 in a system (such as an android system), and set a monitoring object in a Settings database 10 of the system through the monitoring object setting module 21, where the monitoring object may be a field related to BATTERY change information, such as GET _ BATTERY _ INFO, added in the Settings database 10. The monitoring module 22 is configured to monitor the field GET _ BATTERY _ INFO in the service component BatteryService, where the monitoring module 22 creates a content watcher contentobser, and the content watcher contentobser monitors the field GET _ BATTERY _ INFO in a constructor of the service component BatteryService.
The client may then encrypt the SD card using an encryption module 30, which encryption module 30 may be encryption software installed in the system. When the client uses the encryption module 30 to encrypt the SD card, the authority allowing writing the Settings database 10, such as android. Then, if the client needs to obtain the BATTERY variation information, the modification module 25 may modify the value of the field GET _ BATTERY _ INFO in the Settings database 10, for example, set the value to another value other than 0. Once the value of the field GET _ BATTERY _ INFO changes, the monitoring module 22 can monitor and notify the broadcasting module 23 that the value of the field GET _ BATTERY _ INFO changes, and then the broadcasting module 23 reads the BATTERY related data from/sys/class/power _ supply, stores the BATTERY related data in the related variable, and then calls a related function, such as a process value function, to send the BATTERY change information to the client by broadcasting.
Therefore, by the method and the device for actively triggering the system broadcast, the client can acquire the battery change information in time according to the requirement in the encryption process, and the encryption process is ensured to be carried out smoothly.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device-like embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood by those skilled in the art that all or part of the steps, all or part of the modules for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, and the program may be stored in a computer readable storage medium, which may be a read-only memory, a magnetic disk or an optical disk, etc.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for actively triggering system broadcast in the encryption process of a mobile phone secure digital card is characterized by comprising the following steps:
setting a field related to battery change information in a database of the system as a monitoring object;
creating a content viewer to listen to the listening object;
setting a right allowing writing of data in the database before an encryption process;
registering a broadcast recipient to receive a broadcast of the battery change information prior to an encryption process;
an encryption module of the system is adopted to carry out encryption process for the secure digital card;
modifying the value of the monitored object in the encryption process to trigger the broadcast of the battery change information; and
and when the value of the monitored object changes, reading the battery power related data, storing the battery power related data into related variables, and sending out the broadcast of the battery change information.
2. The method for actively triggering system broadcasting in the encryption process of the secure digital card of the mobile phone according to claim 1, wherein the setting the field related to the battery change information in the database of the system as the monitored object comprises:
adding a field related to the battery change information as the monitored object.
3. The method for actively triggering system broadcasting in the encryption process of the mobile phone secure digital card according to claim 1, wherein the monitoring object is monitored in a service component for processing the battery change information.
4. The method according to claim 3, wherein the service component comprises a BatteryService.
5. The method for actively triggering system broadcasting in the encryption process of the mobile phone secure digital card according to claim 1, wherein the database is a Settings database.
6. An apparatus for actively triggering system broadcasting during encryption of a secure digital card of a mobile phone, the apparatus comprising:
the monitoring object setting module is used for setting fields related to the battery change information in a database of the system as monitoring objects;
the monitoring module is used for monitoring the monitored object and comprises a creating module used for creating a content observer so as to monitor the monitored object by the content observer;
the authority setting module is used for setting the authority for writing the data in the database before the encryption process;
a registration module for registering a broadcast recipient to receive a broadcast of the battery change information prior to an encryption process;
the encryption module is used for carrying out encryption process on the secure digital card in the system;
a modification module for modifying the value of the monitored object in the encryption process to trigger the broadcast of the battery change information; and
and the broadcasting module is used for reading the data related to the battery power and storing the data into related variables when the value of the monitored object changes, and sending out the broadcast of the battery change information.
7. The device for actively triggering system broadcasting during the encryption process of the secure digital card of mobile phone according to claim 6, wherein the monitored object setting module comprises:
and the field adding module is used for adding a field related to the battery change information as the monitoring object.
8. The apparatus for actively triggering system broadcasting during encryption of a secure digital card for mobile phones according to claim 6, wherein said monitor module is further configured to monitor said monitored object in a service component for processing said battery change information.
9. The apparatus according to claim 8, wherein the service component comprises a BatteryService.
10. The device for actively triggering system broadcasting in the encryption process of a mobile phone secure digital card according to claim 6, wherein the database is a Settings database.
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| GB2558583A (en) | 2017-01-06 | 2018-07-18 | Nec Corp | Communication system |
| CN106850307B (en) * | 2017-02-21 | 2020-07-07 | 青岛海信移动通信技术股份有限公司 | Attribute information processing method and device |
| CN106874131B (en) | 2017-03-10 | 2020-06-09 | Oppo广东移动通信有限公司 | Broadcast queue adjusting method and device and terminal equipment |
| CN106878957B (en) | 2017-03-10 | 2019-05-14 | Oppo广东移动通信有限公司 | Broadcast queue's generation method, device and terminal device |
| CN106936826B (en) | 2017-03-10 | 2020-01-14 | Oppo广东移动通信有限公司 | Registration method and device of broadcast receiver and terminal equipment |
| CN107295179A (en) * | 2017-06-29 | 2017-10-24 | 青岛海信移动通信技术股份有限公司 | The method and apparatus that a kind of short message is shown |
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| CN110427302A (en) * | 2019-07-29 | 2019-11-08 | 努比亚技术有限公司 | Trigger method, mobile terminal and the computer readable storage medium of content observer |
| CN112035115B (en) * | 2020-06-17 | 2022-09-13 | 厦门盈趣科技股份有限公司 | System API setting and calling method and system based on Android system platform calling |
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