H14-231_V1.0 Exam Dumps - HCIP-HarmonyOS Application Developer V1.0
The main function of EventHandler is to deliver InnerEvent events or Runnable tasks to other threads for processing.
If you need to use a composite animation, you can combine multiple animated objects and add them to the AnimatorGroup. The AnimatorGroup provides two methods: runSerially() and runParallel(). Indicates that the animation starts at the same time and that the animation starts sequentially.
When developing HarmonyOS applications, if the client and server need to communicate across processes, you can use idl to define programming interfaces that are recognized by both.
What are the following scenarios that belong to the public events of the system?
If a developer uses the startAbility() method provided in Ability to start a Service, what are the correct descriptions of starting the Service?
Which of the following descriptions of traditional Bluetooth operation is correct for HarmonyOS devices?
What are the following options that belong to the JavaScript UI framework?
A developer wants to use the list component of the JavaScript UI framework to display a table.
scrollpage="true" scrollbar="on" shapemode="round" scrolleffect="no">
A developer tries to use the word segmentation feature of HarmonyOS to tokenize a dry word article, and in this scenario, the word segmentation text exceeds 500 characters, so the parameter error will be returned.
If there are different components in the layout with the same ID, when the component is searched by ID, the last component found will be returned.
A manufacturer uses the HarmonyOS system to produce a smart oven, which is a lightweight system device in HarmonyOS.
A developer needs to read the resource file in the rawfile folder, and the following code can be used to read it successfully.
Image
image(Image)findComponentByld(ResourceTable.Id_component_image);
Image.setPixelMap (ResourceTable.Media hawei);
Mobile terminal devices have penetrated into all aspects of people's daily life, such as checking the weather, news and anecdotes of the city, traveling taxi, travel navigation, and sports records. These accustomed activities are inseparable from locating the location of the user's terminal equipment. What positioning technologies does HarmonyOS's location services subsystem provide?
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?
Which of the following properties or events does the web component support?
To publish sticky public events in armonyOS, the publisher must first apply for the permissions required to publish sticky public events in config.json.
HarmonyOS provides developers with a HiLog logging system, which of the following log levels are defined in HiLog?
In HarmomOS, when an application is launched, the system creates an execution thread named "Main Thread" for the application. The main thread, also known as the UI thread, displays and updates the UI interface on the main thread.
In the JavaScript FA development self-record, the file ending hml is used to describe the current page layout structure, the components used in the page, and the hierarchical relationship between these components, and the following code should be placed in the file.
Knowing the variable int a=123, which of the following codes can successfully print the value of variable a in the console?
HarmonyOS single-version distributed databases do not enable automatic synchronization between networked devices by default, but you can enable automatic synchronization if necessary.
What capabilities does the public event service provide for the application?
What are the common problems in uploading software packages during the listing process of HarmonyOS applications/metaservices?
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.
On the basis of the supported input events, the multi-mode input defines some input actions commonly used by users as a set of standardized events, and maps the input events of different input devices to the standardized events.
The HarmonyOS Media Management module provides capabilities for audio playback, audio recording, audio and video synthesis, and video decoding.
The network management module of HarmonyOS provides a data networkmanagement function, which can effectively manage HTTP caches to reduce data traffic.
In order to solve the problem of safety risks when walking or cycling, a travel navigation company uses HarmoryOS to push mobile navigation reminders to its watch.
A user migrated video from his mobile phone to a smart screen for playback, using the distributed task scheduling capability of HarmonyOS. In this scenario, the process of connecting the mobile phone to the playback software of the smart screen belongs to the remote connection.
If a reading app uses the language recognition capability provided by HarmonyOS, the app can automatically read a novel.
If a developer wants to implement the page swiping function in an application, which of the following components can be used to implement the function?
HarmonyOS supports on-demand elastic deployment of a variety of terminal devices.
The KV data model is a SQL-type database whose data is organized, indexed, and stored in the form of key-value pairs.
A developer wants to use JS (JavaScript) to develop an application on the smart screen,Which of the following development languages does the developer need to master?
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.
Which of the following subsystem sets are included in the basic capability subsystem of the HarmonyOS system architecture?
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.
Which of the following processes does the HarmonyOS data lifecycle consist of?
What are the reasons why a developer wants to use the previewer in DevEco Studio to view the application interface of the design, but the previewer cannot be used?
When a developer is developing a smart home application, the Switch component will be used to represent the switch of some devices, and ON should be displayed on the ON status component, and 0FF should be displayed on the closed state component. You can use the following code to meet your needs:
Switch btnSwitch=
(Switch)findComponentByld(ResourceTable.
ld_btn_switch);
btnSwitch.setStateOffText("ON");
btnSwitch.setStateOnText("OFF");
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.
Which of the following decorators can be used to manage the state of variables in custom components?
Which of the following functions does the HarmonyOS network management module provide?
How do I define the permissionscorrectly when a developer needs to customize the permissions for a third-party application forHarmony OS?
Which of the following is the callback behavior of the Page Ability lifecycle that can destroy the page?
When developing a HarmonyOSapplication, what methods do I need to call when migrating the FA (Feature Ability) on device A to device B?
Which of the following belongs to the application layer in the HarmonyOS system architecture?
Which of the following belongs to the lifecycle of starting a Service Ability?
When a developer clicks the exit button of an application to release Page Ability resources, which callback method in the Page Ability lifecycle will be triggered?
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?
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?
In the process of coding, software development engineers need to detect whether the Butfer data is read and whether an exception occurs, which of the following methods can be called?
When a developer is developing a game application, in order to display the download progress of game resources, it is necessary to use a circular progress bar, which of the following components can help the developer complete this function?
WhenthePage of Harmony OS executes the onForeground() callback, which of the following states will the Page return to first?
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?
In HarmonyOS application development, where can commonly used backgrounds, such as common text backgrounds and button backgrounds, be placed?
How do I define the permissionscorrectly when a developer needs to customize the permissions for the Harmony OS third-party application?
If a developer wants to use the JavaScript UI framework to develop a graffiti application that allows users to draw custom graphics, which of the following components can be used by the developer?
The distributed soft bus is the base for communication between various devices, which of the following does not belong to the bus hub of the distributed soft bus?
A developer obtains a log content: static finalHiLogLabel LABEL = new HiLogLabe1
(HiLog.LOG_APP,Ox00201, "MY_TAG"); Which of the following information can't be obtained?
When a developer designs a news browsing application, he needs to achieve the effect that the news list and news details are not displayed on the same page, which of the following needs to be created by the developer?
If an engineer needs to determine whether a device supports the corresponding decoder of the specified MIME (Multipurpose Internet Mail Extensions), which of the following interfaces should be selected?
A developer defines an entity class Student.java and uses the following code to construct a teaching table:
Entity(tableName="student",ignoredColums =["ignoredColumn1"," ignoredColumn2", indices =(@Index(value =("firstName." ,"lastName",name="name_index", unique = true)))
Public class User extends OrmObject{
@PrimaryKey(autoGenerate= true)
Private Integer userld;
Private String firstName;
Private String lastName;
Private int age;
Private double balance;
Private int ignoredColumnl;
Private int ignoredColumn2;
}
Which of the following descriptions of this code is wrong?
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 HarmonyOS engineer is about to debug a HarmonyOS application on an emulator device, which of the following debugging processes is correct?
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.
Which of the following does not belong to the system service layer in the HarmonyOS system architecture?
Which of the following is NOT a capability provided by Distributed Device Virtualization in HarmonyOS?
Which of the following modules does a developer need to call to check whether the HarmonyOS cellular data service is enabled?
When a developer needs to create a Service Ability when developing a background service, which of the following processes is NOT the step to create the Ability?
In order to cope with complex application business logic, a developer needs to create multiple threads to perform multiple tasks. In this case, the code is complex and difficult to maintain, and the interaction between tasks and threads becomes more complex. To solve this problem, which of the following interfaces can the developer use to distribute different tasks?
A developer usestheAI capabilities provided by Harmony OS to achieve the following functions: 1. Perform text detection and recognition of image sources such as document remakes and street view reproductions, and provide translation, search and other related services based on the recognition results. 2. Convert various bills into image information by taking pictures, and then use text recognition technology to convert image information into character information that can be used by computers and other equipment. In order to implement the above functions, which of the following I capabilities is most likely to be used by the developer?
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 is used to recover the data?
How should a developer choose the Debug Type if he needs to debug JAVA code separately in a JS+JAVA hybrid project?
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.
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?
A developer uses HarmonyOS to write half of an email on his mobile phone and click the transfer button to the tablet to continue editing the email.
Which description of the HarmonyOS clipboard can be correctly interpreted in the following scenarios?
A HarmonyOS developerdevelops an application based on distributed data services, and the developer uses device A, device B, and device C to test the functionality of the application in a distributed scenario. In the test, after device A successfully adds, deletes, and modifies data, device B and device C cannot read the updated data immediately, but after a certain time window, the data of the three devices will reach the same state. In the preceding scenario, what kind of consistency does the application conform to in a distributed database?
Which of the following interfaces can repeatedly call a function with a fixed time delay between each call?
If a developer wants to develop a page with a tab function, the developer can use the TabList component provided by HarmonyOS. If you want to set the color of unchecked text to black. Which of the following codes is correct?
In the declarative development paradigm, which of the following decorator decorated state variables needs to be initialized locally, and the initialized value can be overridden by the construction parameters?
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?
When a developer is developing a JavaSriptUI page of a shopping software,he needs to use the list component to display the product information, and which method of the list can be used to scroll to the specified item?
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?
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?
Which of the following atomic layout capabilities does not belong to the position of the control element?
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?
TaskDispatcher is the basic interface for Ability to distribute tasks, which hides the implementation details of the thread where the task is located. To ensure that the application is more responsive, we respond to the priority of the design task, which of the following is not the priority of the task?
A developer is developing an online education application, and there are multiple choice questions and multiple choice questions in the studentAnswer:interface, which of the following components is suitable for displaying multiple choice questions?
When an engineer develops an application and needs to add the function of extracting videos, which of the following interfaces should be called?
When a developer develops a HarmomyOSapplication, if a Text component is used as the title bar of the page, and its width is set to match_parent and its height is set to 50vp, how can the text content in the Text be centered when setting its properties in the layout file?
If a developer wants to develop a page with a tab function, the developer can use theTabList component provided by HarmomyOS. If you want to set the horizontal center alignment of text, which of the following codes is correct?
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 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.
There is a button on the main interface of a HarmonyOS application, and the display text on the button is "Start Download", after clicking this button, a sub-thread is created to perform time-consuming download operations. After the download is over, you can change the button in the subthread to "Download End".
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.
With the help of the AI-enabled capabilities of HarmonyOS, it can detect and recognize the textof image sources such as document remakes and street view reproductions, and can also be integrated into other applications to provide text detection and recognition functions, and provide translation, search and other related services based on the recognition results. This is by taking advantage of the super-resolution of text and images in AI.
If a developer wants to develop a file background download function, there needs to be a Page Ability to provide UI pages, and a ServiceAbility to provide a background file download function. If you want to perform some operations in the Service Ability after connecting to the Service Ability in the Page Ability, you need to implement the onConnect() method in the Service Ability.
In HarmonyOS's "1+8+N" strategy, smart microwave oven devices belong to "N" devices.
An engineer uses the WLAN P2P function, and the engineer can establish a P2P group.
If the third-party library used by the developer involves permission management, the permission needs to be declared one by one in the config.json file of the application.
When a developer starts a music player on a remote device, he or she may not fill in the Deviceld of the remote device.
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 an application calls a service, the service will check the permissions of the application, and the service cannot be used if there is no corresponding permission.
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);
After the user enters a piece of text, with the help of the part-of-speech annotation interface, the application can perform automatic word segmentation, and label each word in the word segmentation result with a correct part of speech. However, the part-of-speech tagging feature provided by HarmonyOS only provides a fixed word segmentation granularity, and developers cannot customize the word segmentation granularity as needed when developing applications.
HarmonyOS's relational database and object relational mapping database are both based on SQLite.
In order to avoid affecting the startup speed, developers need to postpone the execution of non-essential time-consuming tasks until the time of use, instead of performing all initializations in the onStart() method.
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.
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.
In DevEco Studio, engineers can log in to the emulator after passing the real-name authentication of their HUAWEI ID.
A Page Instance can contain a group of related pages, and each page is represented by an AbilitySlice instance.
When MainAbility and MainAbiitySlice are bound together, the lifecycles of the two are synchronized, including the callback method for transitioning between states.
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.
A HarmonyOS developer uses syncDispatch to synchronously dispatch tasks when developing applications. In this scenario, syncDispatch dispatches the task and waits for the task to complete on the current thread, so the current thread is not blocked until it returns.
When MainAbility and MainAbilitySlice are bound together, the lifecycles of the two are synchronized, including the callback method for transitioning between states.
When developing the list component in the JavaScript UI framework, you can use the data of the Map type to dynamically bind the data.
In order to improve the user experience, a developer uses ScrollView to realize the scrolling display of photos in an album application, and in order to improve the user experience, the developer sets the ScrollView rebound_effect property to true, so that the photo has a rebound effect when sliding to the bottom.
If a developer wants to develop a file background download function, there needs to be a Page Ability to provide U pages, and a Service Ability to provide the background file download function. If you want to perform some operations after connecting to the Service Ability in the Page Ability, you need to implement the onAbilityConnectDone() method in the Page Ability.
HarmonyOS's Data Ability is used to provide an interface for operation data, but cannot provide file-related operations.
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.
In the HarmonyOS system architecture, the distributed data management module belongs to the framework layer.
An engineer uses a simulator to debug a HarmonyOS application, which can support two types of HAP: signed and unsigned HAP (Harmomy0S Ability Package).
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 the user is driving a car, he cannot use the mobile phone with his hands free, but he can control the mobile phone through voice assistant interaction. The abovescenarios belong to a typical class of applications of entity recognition.
A Page Ability (hereinafter referred to as a "Page") may consist of one or more AbilitySlice, which refers to the sum of a single page of an application and its controllogic.
Static animation has a start state, an end state and an intermediate state, if you need to set the transition state and transition effect in the middle, you can use static animation to achieve it.
When using EventHandler to implement inter-thread communication, if EventRunner takes out the InnerEvent event, EventRunner will directly process the event on the new thread.
Frame rate is the frequency (rate) at which a bitmap image appears continuously on a display in frames, measured in hertz (Hz).
The object relational mapping database mainly provides light-grade Key-Value exploration, which supports local applications to store less data, and the data is stored in local files and also loaded in memory, so the access speed is faster and more efficient.
The Service Ability created by a developer does not have a user interface. Can be launched by other apps. When the user switches to another application, the Service will be killed in the background.
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 needs to make a list of the minimum necessary permissions for the application he develops. If the minimum necessary permissions list is output correctly, the lack of one of these permissions will cause the application-related services to be unable to implement or run normally.
A HarmonyOS application may not contain a hap package of the feature type.
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.
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.
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.
Suppose that multiple AbilitySlice are associated in MainAbility, and multiple AbilitySlice are switched in the same page, the lifecycle of MainAbility and all AbilitySlice is synchronized.
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.
HarmonyOS maintains a stack of AbilitySlice instances for each Page, and each AbilityS1ice instance that enters the foreground will be added to the stack.
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").
The ListContainer grid layout can be realized through the setLayoutManager() method
When a developer uses mobile phones and smart screens to develop applications, he can select two device types, smartphones and smart screens, in the AppGallery project.
In HarmonyOS, by default, the UI interface is displayed and updated in the main thread
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.
In HarmonyOS, there are some applications that can call out universal cards, which can bring you the experience of using ().
The library file is the third-party code that the application depends, which are the correct ways to use the following library files?
A HarmonyOS application developer displays three flowers in the form of a list, and the interaction logic code of the page is as follows.
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?
In the stage model, what are the following configuration files that belong to the AppScope folder?
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?
Which of the following databases uses SQLite as the persistent storage engine in HarmonyOS data management?
If a user wants to migrate the video of his mobile phone to the smart screen for display on a video call, what are the correct items in the description of the scene?
Which of the following positioning capabilities does the location service subsystem of HarmonyOS provide?
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?
If a developer uses custom components when developing a HarmonyOS application, what are the correct descriptions of custom components below?
Which of the following APIs can I use to query the information of Ability?
When a developer receives a new product demand and asks the user to remake old documents such as paper letters into electronic versions, the application can improve the remake effect of old documents and make the work more correct. What kind of AI-enabled capabilities can be leveraged by HarmonyOSto achieve this?
The Minimalist Protocol is a communication protocol customized by HarmonyOS, which layers of the traditional communication protocol are simplified?
The library file is the third-party code that the application depends on, which of the following library files are correct?
A developer has developed a HarmonyOS application that remotely launches a Page on phone B, and which of the following permissions does not need to request the user to grant permission by sending a pop-up window at runtime?
Which of the following modules does the HarmonyOS forwarding architecture consist of?
HarmonyOS Capabilities are divided into two types: Feature Ability and Particle Ability.
Distributed task scheduling builds a unified distributed service management (discovery, synchronization, registration, and call) mechanism based on technical characteristics such as distributed soft bus, distributed data management, and distributed profile.
Which of the following is an event method that can obtain the offset of the List slide
If the HarmonyOS user displays the navigation information on the mobile phone and the smart watchat the same time, if the smart watch is out of power, causing the navigation information to stop displaying, which callback will the navigation app on the mobile phone distribute to receive the termination notification?
NetworkID is the communication identifier of distributed network device nodes in distributed networking, and is used to identify network device nodes in distributed services. To meet the privacy requirements in distributed scenarios, in which of thefollowing scenarios will NetworkID change?
If a developer develops a HarmonyOS application and remotely launches a Page on phone B, which of the following permissions does not require the user to request authorization by sending a pop-up window at runtime?
What is the format of the software package when uploading and publishing a software package?
When using HarmonyOS distributed terminals, which of the following items can ensure that the system is safe and reliable?
Whichof the following does not belong to the application framework layer in the Harmony OS system architecture?
Which of the following development languages can a developer use when developing a HarmonyOS smart screen application?
Which of the following resource directories should the pictures, audios, videos and other media files involved in the application development process be placed in?
In order to complete the release of the application, an engineer needs to apply for a digital certificate, which of the following options is correct about the description of the digital certificate?
Which of the following items is an asynchronous task dispatch method in HarmonyOS threads?
Which of the following features does HarmonyOS smart home devices include?
Which of the following sorting types does the trusted list of devices found by HarmonyOS Device Manager contain?
Which of the following is part of the basic software service subset in HarmonyOS?
What data types are supported for the storage of preference preferences values
Regarding the Button component, which of the following styles is a capsule-type button?
Which of the following languages does HarmonyOS support for creating application projects?
Which of the following permissions is required to load network images with the Image component?
There is a configuration file named "config.json" in the root directory of each HAP package of the HarmonyOS application, which mainly covers the following three aspects:
What kind of struct is used to decoratively indicate that the structure has the ability to be componentized?
If the user migrates the video on the machine to the smart screen for playback, which of the following callback methods can save the video playback data on the mobile phone?
What functions does HarmonyOS provide in app data management to enable developers to seamlessly connect app data between different devices?
When I need to create a profile when publishing an application, what type should I choose?
The meta-service package consists of one or more HAP packages, and each HAP package shall not exceed ( ) to provide a second-to-open experience.
Which of the following descriptions is wrong when it comes to the simultaneous development of JS (JavaScript) and Java languages in HarmonyOS application development?
Which of the following modules provides a full-duplex communication co-ordination?
Which of the following classes is the base class for JavaScript FA (Feature Ability) to run on HarmonyOS?
In order to ensure that the application has better responsiveness, the developer has designed different priorities for tasks A, B, and C. Task A maintains the default priority, Task B has HICH, and Task C has LOW. Which of the following descriptions of tasks A.B, and C is correct?
HarmonyOS provides two mechanisms for calling JavaPA (ParticleAbility) by JSFA(FeatureAbility), namely Ability and InternalAbility.