分享一个有趣的鸿蒙分布式小游戏

今天给大家分享一个有趣的鸿蒙分布式小游戏：你画我猜。

开发心得（如有错误还请大佬及时指正）：

• 分布式流转：一个 APP 应用在设备之间互相拉起迁移，只在一个终端上运行。

• 分布式协同：一个 APP 同时在多个设备上运行，画面实时共享，数据实时传输。

在工程创立之后，首先有个很重要的事情那就是验权。

①这个分布式协同会用到一个权限接口，去 MainAbilitySlice 里面申请

voidgrantPermission(){//获取验证权限数据交互允许不同设备间的数据交换。if(verifySelfPermission(DISTRIBUTED_DATASYNC)!=IBundleManager.PERMISSION_GRANTED){if(canRequestPermission(DISTRIBUTED_DATASYNC)){requestPermissionsFromUser(newString[]{DISTRIBUTED_DATASYNC},PERMISSION_CODE);}}}

权限接口文档链接：

https://developer.harmonyos.com/cn/docs/documentation/doc-guides/security-permissions-available-0000001051089272

开发者需要在 config.json 文件中的“reqPermissions”字段中声明所需要的权限。

{"module":{"reqPermissions":[{"name":"ohos.permission.CAMERA","reason":"$string:permreason_camera","usedScene":{"ability":["com.mycamera.Ability","com.mycamera.AbilityBackground"],"when":"always"}},{...}]}}}

{"name":"ohos.permission.DISTRIBUTED_DEVICE_STATE_CHANGE"//允许获取分布式组网内设备的状态变化。},{"name":"ohos.permission.GET_DISTRIBUTED_DEVICE_INFO"//允许获取分布式组网内的设备列表和设备信息。},{"name":"ohos.permission.GRT_BUNDLE_INFO"//查询其他应用的信息。},{"name":"ohos.permission.INTERNET"//允许使用网络socket。}

应用权限列表文档链接：

https://developer.harmonyos.com/cn/docs/documentation/doc-guides/security-permissions-guidelines-0000000000029886

再看页面结构：

• graphic：页面样式效果调配

• layoput：此 demo 的 java UI 页面布局结构

主页面入口布局代码 ability_main：

<?xml version="1.0" encoding="utf-8"?><DirectionalLayoutxmlns:ohos="http://schemas.huawei.com/res/ohos"ohos:height="match_parent"ohos:width="match_parent"ohos:orientation="vertical"ohos:background_element="$graphic:background_button"><Textohos:height="match_content"ohos:width="match_content"ohos:top_margin="150px"ohos:layout_alignment="horizontal_center"ohos:text="你好鸿蒙_你画我猜"ohos:text_size="38fp"/><Imageohos:id="$+id:imageComponent"ohos:height="200vp"ohos:width="1080"ohos:top_margin="150px"ohos:image_src="$media:HM"/><Buttonohos:id="$+id:help_btn"ohos:height="100vp"ohos:width="300vp"ohos:background_element="$graphic:background_button"ohos:layout_alignment="horizontal_center"ohos:left_padding="15vp"ohos:right_padding="15vp"ohos:text="进入游戏"ohos:text_size="30vp"ohos:top_margin="20vp">Button>DirectionalLayout>

游戏匹配页面布局 math_game：

<?xml version="1.0" encoding="utf-8"?><DirectionalLayoutxmlns:ohos="http://schemas.huawei.com/res/ohos"ohos:height="match_parent"ohos:width="match_parent"ohos:orientation="vertical"><Buttonohos:id="$+id:help_btn"ohos:height="match_content"ohos:width="500px"ohos:background_element="$graphic:background_begin"ohos:layout_alignment="horizontal_center"ohos:left_padding="15vp"ohos:right_padding="15vp"ohos:text="匹配对手"ohos:text_size="30vp"ohos:top_margin="200vp">Button><Imageohos:id="$+id:imageComponent"ohos:height="200vp"ohos:width="1080"ohos:top_margin="100px"ohos:image_src="$media:NHWC"/>DirectionalLayout>

MainAbilitySlice：

packagecom.huawei.codelab.slice;importstaticohos.security.SystemPermission.DISTRIBUTED_DATASYNC;importcom.huawei.codelab.ResourceTable;importcom.huawei.codelab.utils.CommonData;importcom.huawei.codelab.utils.LogUtil;importohos.aafwk.ability.AbilitySlice;importohos.aafwk.content.Intent;importohos.aafwk.content.Operation;importohos.agp.components.Component;importohos.bundle.IBundleManager;publicclassMainAbilitySliceextendsAbilitySlice{privatestaticfinalStringTAG=CommonData.TAG+MainAbilitySlice.class.getSimpleName();privatestaticfinalintPERMISSION_CODE=10000000;@OverridepublicvoidonStart(Intentintent){super.onStart(intent);super.setUIContent(ResourceTable.Layout_ability_main);grantPermission();initView();}voidgrantPermission(){//获取验证权限数据交互允许不同设备间的数据交换。if(verifySelfPermission(DISTRIBUTED_DATASYNC)!=IBundleManager.PERMISSION_GRANTED){if(canRequestPermission(DISTRIBUTED_DATASYNC)){requestPermissionsFromUser(newString[]{DISTRIBUTED_DATASYNC},PERMISSION_CODE);}}}//privatevoidinitView(){findComponentById(ResourceTable.Id_help_btn).setClickedListener(newButtonClick());}privatevoidmathGame(){//数学游戏LogUtil.info(TAG,"ClickResourceTableId_math_game");IntentmathGameIntent=newIntent();OperationoperationMath=newIntent.OperationBuilder().withBundleName(getBundleName()).withAbilityName(CommonData.ABILITY_MAIN).withAction(CommonData.MATH_PAGE).build();mathGameIntent.setOperation(operationMath);startAbility(mathGameIntent);}//进入游戏privateclassButtonClickimplementsComponent.ClickedListener{@OverridepublicvoidonClick(Componentcomponent){mathGame();}}}

MathGameAbilitySlice：

packagecom.huawei.codelab.slice;importcom.huawei.codelab.ResourceTable;importcom.huawei.codelab.devices.SelectDeviceDialog;importcom.huawei.codelab.utils.CommonData;importcom.huawei.codelab.utils.LogUtil;importohos.aafwk.ability.AbilitySlice;importohos.aafwk.content.Intent;importohos.aafwk.content.Operation;importohos.agp.components.Button;importohos.agp.components.Component;importohos.data.distributed.common.KvManagerConfig;importohos.data.distributed.common.KvManagerFactory;importohos.distributedschedule.interwork.DeviceInfo;importohos.distributedschedule.interwork.DeviceManager;importjava.util.ArrayList;importjava.util.List;publicclassMathGameAbilitySliceextendsAbilitySlice{privatestaticfinalStringTAG=CommonData.TAG+MathGameAbilitySlice.class.getSimpleName();privateButtonhelpBtn;privateListdevices=newArrayList<>();@OverridepublicvoidonStart(Intentintent){super.onStart(intent);super.setUIContent(ResourceTable.Layout_math_game);initView();}privatevoidinitView(){if(findComponentById(ResourceTable.Id_help_btn)instanceofButton){helpBtn=(Button)findComponentById(ResourceTable.Id_help_btn);}helpBtn.setClickedListener(newButtonClick());}privatevoidgetDevices(){if(devices.size()>0){devices.clear();}ListdeviceInfos=DeviceManager.getDeviceList(ohos.distributedschedule.interwork.DeviceInfo.FLAG_GET_ONLINE_DEVICE);LogUtil.info(TAG,"MathGameAbilitySlicedeviceInfossizeis:"+deviceInfos.size());devices.addAll(deviceInfos);showDevicesDialog();}privatevoidshowDevicesDialog(){newSelectDeviceDialog(this,devices,deviceInfo->{startLocalFa(deviceInfo.getDeviceId());startRemoteFa(deviceInfo.getDeviceId());}).show();}privatevoidstartLocalFa(StringdeviceId){LogUtil.info(TAG,"startLocalFa......");Intentintent=newIntent();intent.setParam(CommonData.KEY_REMOTE_DEVICEID,deviceId);intent.setParam(CommonData.KEY_IS_LOCAL,true);Operationoperation=newIntent.OperationBuilder().withBundleName(getBundleName()).withAbilityName(CommonData.ABILITY_MAIN).withAction(CommonData.DRAW_PAGE).build();intent.setOperation(operation);startAbility(intent);}privatevoidstartRemoteFa(StringdeviceId){LogUtil.info(TAG,"startRemoteFa......");StringlocalDeviceId=KvManagerFactory.getInstance().createKvManager(newKvManagerConfig(this)).getLocalDeviceInfo().getId();Intentintent=newIntent();intent.setParam(CommonData.KEY_REMOTE_DEVICEID,localDeviceId);intent.setParam(CommonData.KEY_IS_LOCAL,false);Operationoperation=newIntent.OperationBuilder().withDeviceId(deviceId).withBundleName(getBundleName()).withAbilityName(CommonData.ABILITY_MAIN).withAction(CommonData.DRAW_PAGE).withFlags(Intent.FLAG_ABILITYSLICE_MULTI_DEVICE).build();intent.setOperation(operation);startAbility(intent);}privateclassButtonClickimplementsComponent.ClickedListener{@OverridepublicvoidonClick(Componentcomponent){getDevices();//启动机器匹配}}}

责任编辑：haq

小游戏分享数据系统

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