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When designing an application, the program needs to include the global configuration information of the application and the configuration information of the HarmonyOS Ability Package (HAP). In which file can the developer configure this information?
When a user is traveling by car, a navigation route is planned on the mobile phone, and after getting into the car, the user migrates the mobile phone navigation to the large screen of the car machine. In this scenario, which interface is used to implement cross-device migration?
When a developer receives a new product demand and asks users to remake old documents such as paper letters into electronic versions, the application can improve the remake effect of the old documents and make the work more correct. What kind of AI-enabled capabilities can be leveraged by HarmonyOSto achieve this?
Before developing the NFC function, a HarmonyOS developer must first confirm whether the device supports the NFC function and whether the NFC is turned on.
The user migrates the video on the mobile phone to the smart screen for playback, and after the mobile phone saves the data, the smart screen calls back which of the following methods does the user recover the data?
If a developer needs to use asyncDispatchBarrier to set up a barrier asynchronously, in this scenario, in order to separate different task groups, the developer can choose which of the following task dispensers?
When the system destroys a page, which of the following callback methods will be triggered?
When the user migrates the video on the mobile phone to the smart screen for playback, there will be a pop-up prompt for the user to confirm whether to start the migration. During the migration process, which of the following methods is first called?
When the engineer is developing JS (JavaScript), the application can successfully load the local image in the common path, but cannot load the network image.
If a developer wants to achieve the effect of page swiping in an application, which of the following components does the developer need to select?
When a developer develops a JavaScript application on a smart screen. If you want to do some static animation, if you want to move a component 200px horizontally, which of the following styling configurations is correct?
A HarmonyOSuser downloads and installs a new application, which has declared some non-sensitive permissions in the config.json file, and the application may involve some sensitive permissions during running. Which of the following is correct in this scenario?
An engineer uses a local simulator for application debugging, which of the following describes the error of the local simulator?
The log content is "01-20 16:08:36.90823597-23597/com.example. myapplicition w00201/MY_TAG: Failed to visit . reason: 503." By analyzing the log, you can't get the following items?
When a developer develops a social application, he needs to develop a plug-in that generates a contact QR code. In this scenario, the developer can use the code generation Al capability provided by HarmonyOS, which can return the corresponding QR code image byte stream based on the given string information.
HarmonyOS single-version distributed databases do not enable automatic synchronization between networked devices by default, but you can enable automatic synchronization if necessary.
Which of the following descriptions of traditional Bluetooth operation is correct for HarmonyOS devices?
Which of the following options belong to the kernel layer in the HarmonyOS system architecture?
Which of the following sorting types does the trusted list of devices found by HarmonyOS Device Manager contain?
Which of the following NFC functions can developers use when developing apps based on HarmonyOS?
In the HarmonyOS distributed application scenario of multi-device collaboration, device A is often required to start and stop the service of device B, for example, start and stop the music playback of device B on device A. In the process of starting and stopping a Service, the following statement is correct
When I need to create a profile when publishing an application, what type should I choose?
HarmonyOSdefines different open scopes and authorization methods to protect data according to the sensitivity of the data involved in the interface
When designing the application, the developer added a Text component and a Button component, and the development sample is shown below. What layout does the developer not have to choose to place the components?
What files does an engineer need to use to sign the debugged module when he wants to debug a newly developed application on a real device?
A developer uses the HarmonyOS Bluetooth Low Energy function to achieve cross-distance wireless communication, how does the central device and peripheral devices interact in this scenario?
HarmonyOSadopts a multi-core design, which supports the selection of suitable OS kernels for different resource-constrained devices
Cross-terminal migration and collaboration are the capabilities of which HarmonyOS feature
What is the format of the software package when uploading and publishing a software package?
A HarmonyOS developer created two serial task distributors, dispatchera anddispatcher_b, and also created a proprietary task dispatcher. Which of the following scenarios can cause deadlocks due to improper use of syncDispatch?
If a developer wants to obtain the location information of a HarmonyOS device, which of the following methods is correct?
If a developer wants to set up a dial pad, he will use round buttons and capsule buttons, what are the shape types that will be used in the background layer?
The Minimalist Protocol is a communication protocol customized by HarmonyOS, which layers of the traditional communication protocol are simplified?
Which of the following combinations can realize the one-way state synchronization of child components from parent and child components?
ArkTS Stage model supports API Version 9, is it correct about its project directory structure?
Aoh-package.json5 is used to store application-level configuration information, including signatures, product configurations, etc
Bbuild-profile.json5 is used to configure the entry and package name of the third-party package declaration file
Cmodule.json5 contains the configuration information of HAP, the configuration information applied to a specific device, and the global configuration information of the application
Dapp.json5 is used to write application-level compilation and build task scripts
258 DevEco Studio provides an emulator for developers to run and debug HarmonyOS applications/services.
A localemulator is created and runs on the local machine and requires login authorization
BThe local emulator supports functions such as volume adjustment, battery level adjustment, screen rotation, etc
CYou don't need to sign your application/service when you install it on your local emulator
DDevEco Studio will start the compilation build of the application/service, and the application/service will run on the local simulator after completion
259. After installing Lottie through OHPM, in which file will the relevant configuration information be generated?
A HarmonyOSengineer needs to apply for a digital certificate to complete the release of the application, which of the following descriptions of digital certificates is wrong?
When a developer is developing a UI, he writes the following code, which of the following is the correct implementation effect?
When a data engineer constructs a data table, which of the following can be used as data types?
When a developer is developing an application, he creates a Checkbox component and writes the following code, which of the following descriptions of the code segment is correct?
ohos:height="match_content" ohos:width="match_content" ohos:text="This is a checkbox" ohos:marked="false" ohostext_color_on=“#000000” ohos:text_color_off="#FFFFFF" ohos:text_size="#000000"/>
Which of the following is part of the basic software service subset in HarmonyOS?
If a developer wants to develop a Data Ability for the storage and management of application data, which of the following can help the developer realize the function of inserting multiple pieces of data into the database at one time?
A developer needs to use the current data network for socket data transmission, and the development process involves the following steps:
1。Send data with sockets.
2。Bind the network with NetHandle.bindSocket().
3。Call NetManager.getDefaultNet() to get the default data network.
4。Call NetManager.getInstance(Context9) to get the instance object of network management.
When the developer combed through the development steps, the above steps were sorted according to the order in which the features were completed in the code. Which of the following is the correct order?
A user migrates video from a mobile phone to a smart screen for playback and uses the distributed task scheduling capability of HarmonyOS. Which of the following belongs to the process of opening the smart screen playback software when the mobile phone is migrated in this scenario?
If an engineer is about to debug a Harmony OS application on an emulator device, which of the following correct debugging processes is the following?
In HarmonyOS, which of the following scenarios is the application responsible for instantiation?
When developing a HarmonyOSapplication, what methods do I need to call when migrating the FA (Feature Ability) on device A to device B?
After a developer sets :ohos:layout_ alignment="horizontal _center" in the Text component, he writes: text.setTranslationX(600) in the code, where is the Text displayed in the parent layout?
The HarmonyOS video module supports the development of video services and the opening of the ecosystem, allowing developers to easily play, operate, and develop new functions of video media through the open interfaces. Video playback includes playback controls, playback settings, and playback queries, such as start/stop playback, playback speed settings, and whether to loop playback. When developing a video playback feature, which of the following steps is correct?
A developer obtains a log content: static final HiLogLabel LABEL = new HiLogLabe1 (HiLog.LOG_APP,0x00201,"MY_TAG");
Which of the following information can't be obtained?
When a developer was developing a ticket booking application, he used the sliding selector TimPicker in the time selection of air tickets, according to the requirements of the airline, the time does not need to display the second information, which of the following can meet the needs?
A developer designs a game application with MainAbility on the home page, click the game icon on the desktop, and then press the Home button to hide the game in the background, how does the life cycle of MainAbility change?
In order to ensure better responsiveness of the application, developers need to use the task distributor to design the priority of the task.
In order to help users find data in the app through the global search app, a HarmonyOSdeveloper needs to index the data of the app and configure the global search searchable entities. Which of the following interfaces can the developer choose to index their application data?
Which of the following belongs to the application layer in the HarmonyOS system architecture?
Which of the following is NOT acomponent of the Harmony OS object-relational mapping database?
If a developer needs to add the Banner function to a page, which of the following components is most suitable for implementing the function?
In the Page Ability lifecycle of HarmonyOS, when the system creates a Page instance for the first time, which of the following callback methods will be triggered first?
If a developer wants to develop a file background download function, there needs to be a Page Ability to provide UI pages, and a Service Ability to provide the background file download function. Which of the following can invoke Service Ability in Page Ability?
Which of the following security mechanisms can ensure that application data is not maliciously used?
When a developer uses HarmonyOS Device Manager, he wrote the following code, which code description is correct?
Vardevicelnto=dmInstance.getLocaIDevicelnfoSync () :
The logs queried by a developer are as follows. HiLog.warn(LABEL, "Failed to visit %(private) s,reason:%(public}d.",url, exrno); What kind of level does the log belong to?
When a developer designs a PA (Particle Ability) application, which of the following development steps can be omitted?
What is the process of cross-terminal migration from an application on HarmonyOS device A to the application on device B by calling the distributed task scheduling capability to continue sbility?
Which description of the HarmonyOS clipboard can be correctly interpreted in the following scenarios?
After the user migrates the navigation of the mobile phone to the smart watch, if the smart watch needs to obtain the data transmitted from the mobile phone, which of the following methods should it be obtained?
The permission scope of HarmonyOS refers to whichapplications can apply for a permission, which of the following fields does not belong to the permission open scope?
When an engineer develops an application and needs to add the function of extracting videos, which of the following interfaces should be called?
When the system creates a page instance for the first time, which method will be called?
A developer needs to cancel a task, but part of the code segment he wrote was deleted by mistake. The remaining codes are as follows, with the missing codes indicated by the dash:
TaskDispatcher dispatcher =
getUlTaskDispatcher();
Revocable revocable =
________________________(new Runnable(){
@Overide Public void run(){
HiLog.info(L . ABEL_ _LOG,"delay dispatch");
}
},10);
Boolean revoked = revocable.revoke();
HiL og.info(L _ABEL_ LOG),"%{public}b" ,revoked);
Which of the following might be missing pieces in the above code?
If a UI is no longer visible to the user, but you don't want to destroy it, which method will the system call to release the corresponding resources?
When a developer uses Page Ability to open a ServiceAbility, he needs to pass parameters through Intent, at what stage is the parameter obtained in the whole process null?
onStart( ) in A S ervice.
If a developer wants to develop a file background download function, there needs to be a Page Ability to provide UI pages, and a Service Ability to provide the background file download function. Which of the following can call Service Ability in Page Ability?
When a developer clicks the exit button of an application to release PageAbility resources, which callback method in the ability lifecycle of the Pag package will betriggered?
HarmonyOSprovides developers with different abilities according to different application scenarios, for example, if a developer plans to develop a background music playback function, which of the following is correct about the configuration of the ability in config.json?
A developer has developed with the Text component, and the effect is as follows, which piece of code can be used to achieve the effect?
When a developer develops an application based on HarmonyOS, the data used by a developer can be decomposed into multiple objects. The developer needs to add, delete, modify, and check the teaching data, but does not want to write overly complex SQL statements. In this scenario, the developer can use an object-relational mapping database to process the data.
A developer uses the Wi-Fi "Don't TrustHot-spotConfiguration" feature provided by HarmonyOS to add a specifiedhot-spotto its application, making it prioritize lower than the saved hot-spot. In this case, the system will refuse to connect to thehot-spoteven if it is the most suitablehot-spotafter the system scan.
If a third-party application has registered the callback of the airplane mode setting item in advance, when the user modifies the airplane mode status of the terminal through the system settings, the application will detect the change of this setting item and adapt it. If the airplane mode is detected to be turned off, the app will go offline, and if the airplane mode is detected and turned on, the app will recapture the online data.
HarmonyOS provides access to external storage devices, such as USB flash drives, SD cards, etc.
Sampling refers to the process of sampling a digital signal in a continuous time domain at certain time intervals to obtain a discrete signal in the discrete time domain.
AbilitySlice and Page have the same lifecycle state and callback method with the same name, and when the Lifecycle of the Page changes, the same lifecycle change will occur in AbilitySlice. Similarly, as the lifecycle of an AbilitySlice changes, the lifecycle state of a Page changes.
HarmonyOS application packages are released in the form of application packs, which are composed of one or more HAPs (HarmonyOS Ability Packages) and pack.info describing each HAP attribute.
When a time-consuming operation needs to be performed in a HarmonyOS application, it is preferable to create subthreads in FA instead of creating subthreads in Service.
The user application package of HarmonyOS may not contain a HAP package of the feature type.
When a developer has multiple versions of the object-relational mapping database, and the developer calls the BookStoreUpgrade class to upgrade the database version, the version number of the BookStoreUpgrade class is configured as "2", and the actual version number of the current BookStore.db is "1".
In JavaScript UI development, for wearable projects and TV projects, the name of the homepage can be not index, and the first page in the pages configuration list is the homepage; for the litewearable project, the name of the homepage must be index.
When MainAbility and MainAbilitySlice are bound together, the lifecycles of the two are synchronized, including the callback method for transitioning between states.
Operations such as the display and update of the UI interface are carried out on the main thread, so the main thread is also called the UI thread.
Service is running in the background, and users want the application to keep running all the time when playing music, and the foreground Service cannot be used at this time.
In the process of developing an application based on HarmonyOS, in order to avoid applying for permissions that are unrelated to the user's required functions, a developer uses the UUID generated by the application instead of the device ID to reduce the permission application. The developer's actions exemplify the principle of applying for permissions in the vicinity.
In the Javascript UI framework, to realize the jump between pages, you need to specify the uri in the page routing router to find the target page.
A developer calls the terminate method in JavaScript code, which causes the Page Ability to be destroyed.
Before starting the debugging of the Entry module, the engineer needs to check whether the "visible" attribute exists in the config.jsnabilities array in the config.jsnabilities file under the Entry module, and if it does not exist, it needs to be added manually, otherwise the debugging of the Entry module cannot enter the breakpoint.
HarmonyOS provides the NFC message notification function, through which developers can obtain the message of the NFC switch state change and the NFC field strength message.
The callback mechanism provided by the Ability class can allow the Page instance to switch with the user's operation background
If a developer wants to be able to get the return result when the user returns from the navigation target AbilitySlice, they should use presentForResult() to implement the navigation. When the user returns from the navigation target AbilitySlice, the system will call onResult() to receive and process the returned result.
The input division method of HarmonyOS is different from that of traditional operating systems, and multi-dimensional inputs will be integrated, so that developers can use application frameworks, UI components or interfaces that come with the system to implement applications with multi-dimensional and natural interaction characteristics.
The callback mechanism provided by the Ability class can enable the Page instance to switch in the background following the user's operation.
When an Intent is used to initiate a request, if both BundleName and Abilitylame are specified, the application can be started directly according to the full name of the Ability (for example, "com.demcapp.FooAbility").
On the basis of the supported input events, HarmonyOS's multi-dimensional input defines some input actions commonly used by users as a set of standardized events, maps the input events of different input devices to the standardized events, and can obtain a unified experience when using multiple input devices to operate different terminal devices or applications.
The atomic service consists of one or more HAP packets, andone HAP packet corresponds to one FA or one PA. Each FA or PA can be operated independently to perform 1 specific function.
Huawei's latest mobile phones、HarmonyOS system is pre-installed in the smart screen.Among them, the mobile phone does not belong to the HarmonyOS large system device.The smart screen belongs to the large system device。
Motion sensors may be a single physical sensor, or they may be composed of multiple physical sensors.
Lightweight data storage is suitable for data storage involving a large number of data relationships and business relationships, and has better read and write performance than relational databases and object-relational mapping databases.
A manufacturer used HarmonyoS to produce a dash cam (memory is 64MB), which is small in size and light in weight, and is a lightweight system device.
When a developer uses the JS (JavaScript) UI framework to develop an application, if style =width:"10px is used in the component, the width of the component cannot be dynamically modified. If you use style="width:{{width}}" to set the width of a component, you can dynamically modify the width of the component in a JS file.
JavaScript FA (Feature Ability) lifecycle events are divided into application lifecycle and page lifecycle.
Although a Page can contain multiple AbilitySlices, when a Page enters the foreground, the interface displays only one Abilitylice by default.
The following code snippet is used to start the Service of the remote device, if it is replaced with the Service.withDeviceld("deviceld") that starts the local device, it can be deleted.
Intent intent =new Intent();
Operation operation =new Intent.OperationBuilderO
.withDeviceld("deviceld")
.withBundleName
("com.domainname.hiworld.himusic")
.withAbilityName("com.domainname.hiworld.himusic.ServiceAbility")
.withFlags(Intent.FLAG_ABILITYSLICE_MULTI_DEVICE)
.bui1d();
intent.setOperation(operation);
startAbility(intent);
The data generated by a developer's use of Data Ability can be shared between different applications on the same device, but cannot be shared across devices.
When a developer navigates within the same page, the AbilitySlice is new, even if present(newTargetSlice(), new Intent()) is repeatedly called, it will not cause any AbilitySlice to be out of the stack.
When using the location capability of HarmonyOS, developers need to apply for the LOCATION permission, which is a non-sensitive permission and needs to be declared in config.json.
The global search portal provided on HarmonyOS has a desktop drop-down search box or a negative screen search box.
An engineer uses a simulator to debug a HarmonyOS application, which can support two types of HAP: signed and unsigned HAP (Harmomy0S Ability Package).
PositionLayout is an adaptive layout, which is mainly used in scenarios where multiple components at the same level need to automatically adjust the number of columns on different screen sizes.
A user grants permission X to application A of a certain device, and on the device, application A persists the state of this permission grant and can call all interfaces controlled by permission X at any time.
When an engineer packages an application, DevEco Studio will package all the HAP (HarmonyOS Ability Package) modules in the project directory into the application, so if there are HAP modules in the project directory that do not need to be packaged into the application, the tool will automatically delete them and then compile and build the application.
HarmonyOS not only has the system capability of a single device, but also supports deployment on multiple devices with different memory sizes based on the same set of system capabilities
A developer needs to read the resource files in the rawfile folder, and the following code can be used to read them successfully.
Image
image(Image)findComponentByld(ResourceTable.Id_cormponent_image);
Image.setPixelMap (ResourceTable.Media hawei);
HarmonyOS's relational database and object relational mapping database are both based on SQLite.
When users use mobile phones, they will find that the phone number in the text message is often highlighted, and they can dial directly. This is a typical application scenario for entity recognition Al.
A user uses the HarmonyOS distributed task scheduling capability to migrate mobile phone videos to the smart screen for playback. In this scenario, the process of finding whether the smart screen has the same playback software is a global query.
A home appliance manufacturer used HarmonyOS to produce a high-end refrigerator with a display (256MB of memory), which is not part of HarmonyOS's standard system device.
The lightweight preference database is a non-relational database, which mainly provides lightweight key-value operations and supports local applications to store a large amount of data. If a HarmonyOS developer uses a lightweight preference database to save data, the data will be stored in a local file and will not be loaded into memory.
When developers use HarmonyOS distributed terminals, which of the following items can ensure that the system is safe and reliable?
When using Bluetooth Low Energy in HarmonyOS, the peripheral device, as a client, can receive GATT connection requests from the central device, but cannotAnswer:requests for reading and writing eigenvalue content from the central device.
Barrier-free color palettes should meet the identification needs of color blindness, and safe color palettes can be found by simulating the visual effects of different similar color defects.
Which of the following functions is a lifecycle function for a custom component?
In HarmonyOS, when a subscription action is performed after an out-of-order public event is published, subscribers can also receive the out-of-order public event.
When using EventHandler to implement thread interrogation communication, if EventRurner takes out the InnerEvent event, EventRunner will directly process the event on the new thread.
If a developer wants to develop an application on a smart screen, which of thefollowing subsystems will he use?
If an engineer uses the two-way preview function of JavaScript in DevEco Studio, which of the following items can be supported after the function is enabled?
When developing an application, a developer uses the WLAN P2P function to realize point-to-point data transmission between devices. Function 2, Create and remove groups, Function 3, Initiate a connection to the peer device.Which of the above functions is correct in the following descriptions?
To publish sticky public events in armonyOS, the publisher must first apply for the permissions required to publish sticky public events in config.json.
Which of the following descriptions of traditional Bluetooth operation is correct for HarmonyOS devices?
Which of the following subsystem sets are included in the basic capability subsystem of the HarmonyOS system architecture?
When a developer is developing a flight booking application, he needs to use the sliding selector DatePicker in the date selection of air tickets, and in order to improve the user experience, he needs to set the color of a single year/month/day item in operation to blue (#0000FF), which of the following items can meet the development needs?
HarmonyOS maintains a stack of AbilitySlice instances for each Page, and each AbilitySlice instance that enters the foreground will be added to the stack.
What types of conversion functions are supported for static animations in HarmonyOS?
If a developer uses the startAbility() method provided in Ability to start a Service, what are the correct descriptions of starting the Service?
Regarding the Tabs component and the TabContent component, the following description is correct
A developer is using CommonEventData to encapsulate information about ordered public events for data processing when publishing, distributing, and receiving. What do I need to pay attention to when developing?
What are the following types of task dispensers that HarmonyOS provides for developers?
What services will be automatically activated after a HarmonyOS Cloud development project is created?
. If a developer wants to use the distributed device virtualization capabilities of HarmonyOS, which of the following hardware can be selected by the developer?
Which modules in the following figure can be installed and operated independently?
A developer has multiple versions of the object-relational mapping database, and the developer calls the BOOKstoreUpgrade class to upgrade the database version, and the version number of the BOOKstoreUpgrade class is configured as "3", and the actual version number of the current BOOKstore.db is "1", in this case, TestormMigration12, TestormMigration23 The onMigration method is automatically called to complete the database upgrade.
HarmonyOS is classified according to the size of the device's memory, which of the following categories can be divided into?
When testing the Bluetooth Low Energy feature of HarmonyOS, a developer needs to make the central device perform Bluetooth scanning. Which of the following descriptions of the developer's actions are correct?
If a reading app uses the language recognition capability provided by HarmonyOS, the app can automatically read a novel.
The Ark Development Framework of HarmonyOS includes a Web-like development paradigm based on TS extensions and a declarative development paradigm based on JS extensions.
The distributed database is based on the KV data model and provides KV access interfaces.
Which of the following descriptions of the global concurrent task distributor and the concurrent task distributor is correct?
A software development engineer will debug a piece of code, which of the following methods can be used?
Relational databases provide the ability to add, delete, modify, and query local data.
To publish an app, a HarmonyOS developer needs to use a certificate request file (Cerificate Signing Request) to apply for a digital certificate from AppGallery Connect.
To publish a public event with permissions in HarmonyOS, you need to set subscriber permissions in the code.
In the stage model, what are the following configuration files that belong to the AppScope folder?
When publishing an application, I need to create a certificate, and what type of certificate type should I choose?
What data types are supported for the storage of preference preferences values
A user migrates video playback from his mobile phone to a smart screen and uses the distributed task scheduling capability of HarmonyOS. Which of the following is the process of connecting the video to the smart screen playback in this scenario?
Which of the following subsystems in HarmonyOS is part of the basic software servicesubsystem set?
A HarmonyOS developer uses the EventHandler mechanism to process four events: A, B, C, and D, where event D retains the default priority, and the priority properties of the other three events are set as follows: Event A: Priority.INTERMEDIATE Event B: Priority.HIGH Event C: Priority.IDLEWhich of the following statements about the above events are correct?
A HarmonyOS application developer creates two pages, indlex and detai1, so that the two pages jump to each other. The code of the index page is as follows, which of the following descriptions are correct?
The log content filtered by a developer through relevant information is: 01-20 16:08:36.908
23597/com.example.myapplication W
00201/MY-TAG:Failed to visit,reason:503.Which of the following cannot be obtained by analyzing this log?
Ability and InternalAbility are two different ways to call PA (ParticleAbility) by FA (FeatureAbility).
A developer designed an application, when the user receives a notification, if the user clicks on the notification, it will jump to a new page, and if the notification is not clicked, the new page will not be triggered.
Which of the following permissions is required to initiate a network request using HTTP?
In HarmonyOS, Intents are the carriers for transferring information between objects, and which of the following items can be set through Intents?
The software engineer will encode the data, which can take two coding methods: ordinary and pipeline, which of the following are the differences between these two coding methods?
Which of the following databases uses SQLite as the persistent storage engine in HarmonyOS data management?
An engineer uses a local simulator for application debugging, which of the following describes the wrong local simulator?
If a developer wants to use the device virtualization feature of HarmonyOS, which subsystem will he use?
Regarding the position setting of the Tabs component tab, the following is the wrong description
In the collaborative office scenario, project the document on the mobile phone to the smart screen, and perform page turning and zoom operations on the document on the smart screen. What distributed capabilities are used in the preceding scenarios?
If a developer uses the startAbility() method provided in Ability to start a Service, what are the correct descriptions of starting the Service?
HarmonyOS provides developers with data management functions, which of the following are the following?
When creating a test user for a meta-service, you need to select the storage location of the user list
Regarding the callback event of the Video component, the following statement is incorrect
What kind of custom component can be used as a page entry component with a decorator?
TESTED 23 Nov 2024