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?

batchlnsert (Uri uri, ValuesBucket[]values)

query (Uri uriString[ ]columns, DataAbilityPredicates predicates)

delete(Uri uriDataAbilityPredicates predicates)

batchlnsert (Uri uri, ValuesBucket[]values)

insert (Uri uri, ValuesBucket value)

After a developer completes the development of a Harmony OS application, it needs to be published to AppGallery

Generate a key and certificate request file create an AGC project create a HarmonyOS app apply for a certificate and profile file compile and build the app, put it on the Marketplace

Apply for the release of certificates and profile files create an AGC project create a HarmonyOS app generate a key and certificate request file compile and build the app and put it on the app marketplace

Generate a key and certificate request file create an AGC project create a HarmonyOS app apply for a certificate and profile file compile and build the app, put it on the Marketplace

Apply for the release of certificates and profile files compile and build apps create AGC projects create HarmonyOS apps generate keys and certificate request files and put them on the app marketplace

Generate a key and certificate request file create an AGC project create a HarmonyOS app compile and build an app apply for a certificate and Profi1e file, and list it on the Marketplace

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?

connectAbility(intent.connection);

connectPageAbility(intent.connection)

connectAbility(intent.connection);

connectServiceAbility(intent,connection);

A developer wants to implement a registration and login function, and there are two pages, namely registration page A and login page B. When jumping from registration page A to login page B, which of the following is correct about the lifecycle of the two pages?

A(INACTIVE)B(INITIAL)B(ACTIVE)A(BACKGROUND)

B(INITIAL)B(ACTIVE)A(INITIAL)A(BACKGROUND)

A(INACTIVE)A(BACKGROUND)B(INITIAL) B(ACTIVE)

A(INACTIVE)B(INITIAL)A(BACKGROUIND) B(ACTIVE)

When the developer jumps to a new page through the button button, the following code is created. If you don't add '' Button button = (Button) findComponentByld(ResourceTable.ld_button) ;' What happens to this line of code?Public void onStart(Intent intent){super.onStart(intent);super.setUlContent(ResourceTable.Layout_ability_main);Button button =(Button)findComponentByld(ResourceTable.ld_button);button.setClickedListener(listener -> present(newSecondAbilitySlice(),new Intent()));}

button button does not show up on the layout

When you click the button again, the ability crashes

button button does not show up on the layout

Clicking the button does not respond

Click the button button to jump to a new page

What events can the next piece of code handle?

public class CustonLomponent extends Componentimplements Component.DrawTask,Component.EstimateSizeListener,Component.TouchEventListener { ...... public CustomComponent (Context context){ ... Set up a TouchEvent to respond to events setlouchEventListener(this); } ... @Override public boolean onTouchEvent(Component component,TouchEvent touchEvent){ switch (touchEvent.getAction() { case TouchEvent.PRIMARY_POINT_DOWN: circ1ePaint.setColor(Color.GREEN); invalidate() ; break; case TouchEvent.PRIMARY_POINT_UP: circlePaint.setColor(Color.YELLOWV); invalidate(); break ; } return false; } } Both DOWN and UP events can be handled normally

Only UP events can be processed

When a developer subscribes to a public event, he processes the public event in the onReceiveEvent() callback function and writes the following code.EventRunner runner = EventRunner.create();MyEventHandler myHandler = newMyEventHandler(rurner);@Overridepublic void onReceiveEvent(CommonEventDatacommonEventData){final AsyncCommonEventResultresult=goAsyncCommonEvent Runnable task = newRunnable(){@overridepub1ic void run {......The action to be performed, defined by the developerresult.finishCommonEvent();}};myHandler.postTask(task);}

implements asynchronous operations, which solves the problem that time-consuming operations cannot be performed on onReceiveEvent

sets the priority of ordered public events

The publisher has the permission to publish sticky public events

How do I define the permissions correctly when a developer needs to customize the permissions for the Harmony OS third-party application?

'module': { 'defPermissions': [ { 'name':'com.myability.permission.MYPERMISSION', 'grantMode':'system_grant' 'availableScope': ['signatures'] } }

'module': { 'reqPermissions': [ { 'name':'com.myability.permission.MYPERMISSION ' 'grantMode':'system_grant', 'availableScope': ['signatures'] } }

'module': { 'defPermissions': [ 'name':'com.myability.permission.INTERNET' 'grantMode':'user_grant' 'availableScope': ['signatures'] } }

'module': { 'defPermissions': [ { 'name':'com.myability.permission.INTERNET' 'grantMode':'system_grant' 'availableScope': ['signatures'] } }

'module': { 'defPermissions': [ { 'name':'com.myability.permission.MYPERMISSION', 'grantMode':'system_grant' 'availableScope': ['signatures'] } }

If there are 3 Ability sharing a Service instance, how can I exit the Service instance?

All abilities bound to the Service instance are exited

Which of the following is the callback behavior of the Page Ability lifecycle that can destroy the page?

triggers onStop() to notify the user to release system resources

Page is no longer visible to the user, and the system will call onBackground() to notify the developer to release the corresponding resources

triggers onStop() to notify the user to release system resources

takes the Page out of focus and calls onInactive().

Trigger onDestroy() to release system resources

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?

connectAbility(intent, connection)

connectPageAbility(intent,connection)

connectAbility(intent, connection)

connectServiceAbility(intent, connection)

A developer now needs to make a motion track recording application, which can report the user's location information in real time. Which of the following is correct?

Use RequestParam.SCENE_TRAJECTORY_TRACKING settings to locate the scene

Apply for the ohos.permission.LOCATION permission only in config.json

dynamically requests user authorization only in the code ohos.permission.LOCATION

Use RequestParam.SCENE_NO_POWER settings to locate the scene

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?

is horizontally centered and shifted to the right by 600

The parent layout is moved 600 to the top left and right

is horizontally centered and shifted 600 to the left

When a developer calls HarmonyOS Abi1ity Resources (HAR) in an application module, he or she needs to merge the config.json file of HAP and the config.json file of HAR into a single config.json file when compiling and building a HarmonyS Ability Package (HAP). During the merging process, under what circumstances will the values of tags conflict?

HAP has a label value, and the value is A. The HAR has a tag value, and the value can be B

HAP has no label value; The HAR has a tag value, and the value can be B

HAP has a label value, and the value is A; HAR has no label value

Neither HAP nor HAR had labeled values

HAP has a label value, and the value is A. The HAR has a tag value, and the value can be B

Huawei H14-231_V1.0 Practice Test 4 - Free Online Exam Prep & Questions

When a developer specifies a music playback service through an intent when closing a remote service, the developer can realize the ability to disable music playback on remote devices.

Disconnect remote FA (Feature Ability).

Disabling Remote PA (Particle Ability)

Connect to remote PA (Particle Ability)

FA (Feature Ability) is a cross-line device migration

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