1# application_context.h 2 3 4## 概述 5 6声明应用级别的上下文能力。 7 8**库**：libability_runtime.so 9 10**系统能力**：SystemCapability.Ability.AbilityRuntime.Core 11 12**起始版本**：13 13 14**相关模块**：[AbilityRuntime](_ability_runtime.md) 15 16 17## 汇总 18 19### 文件 20 21| 名称 | 描述 | 22| --------------------------------------------------- | ------------------------------------------------------------ | 23| [application_context.h](application__context_8h.md) | 声明应用级别的上下文能力。<br/>**引用文件**：<AbilityKit/ability_runtime/application_context.h><br/>**库**：libability_runtime.so | 24 25### 函数 26 27| 名称 | 描述 | 28| ------------------------------------------------------------ | ---------------------------- | 29| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetCacheDir](_ability_runtime.md#oh_abilityruntime_applicationcontextgetcachedir)(char* buffer, int32_t bufferSize, int32_t* writeLength) | 获取应用级别的缓存目录。 | 30| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetAreaMode](_ability_runtime.md#oh_abilityruntime_applicationcontextgetareamode)([AbilityRuntime_AreaMode](_ability_runtime.md#abilityruntime_areamode)* areaMode) | 获取应用级别的数据加密等级。 | 31| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetBundleName](_ability_runtime.md#oh_abilityruntime_applicationcontextgetbundlename)(char* buffer, int32_t bufferSize, int32_t* writeLength) | 获取应用包名。 | 32| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetTempDir](_ability_runtime.md#oh_abilityruntime_applicationcontextgettempdir)(char* buffer, const int32_t bufferSize, int32_t* writeLength) | 获取应用级别的临时文件目录。 | 33| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetFilesDir](_ability_runtime.md#oh_abilityruntime_applicationcontextgetfilesdir)(char* buffer, const int32_t bufferSize, int32_t* writeLength) | 获取应用级别的通用文件目录。 | 34| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetDatabaseDir](_ability_runtime.md#oh_abilityruntime_applicationcontextgetdatabasedir)(char* buffer, const int32_t bufferSize, int32_t* writeLength) | 获取应用级别的数据库文件目录。 | 35| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetPreferencesDir](_ability_runtime.md#oh_abilityruntime_applicationcontextgetpreferencesdir)(char* buffer, const int32_t bufferSize, int32_t* writeLength) | 获取应用级别的首选项文件目录。 | 36| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetBundleCodeDir](_ability_runtime.md#oh_abilityruntime_applicationcontextgetbundlecodedir)(char* buffer, const int32_t bufferSize, int32_t* writeLength) | 获取应用级别的安装文件目录。 | 37| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetDistributedFilesDir](_ability_runtime.md#oh_abilityruntime_applicationcontextgetdistributedfilesdir)(char* buffer, const int32_t bufferSize, int32_t* writeLength) | 获取应用级别的分布式文件目录。 | 38| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_ApplicationContextGetCloudFileDir](_ability_runtime.md#oh_abilityruntime_applicationcontextgetcloudfiledir)(char* buffer, const int32_t bufferSize, int32_t* writeLength) | 获取应用级别的云文件目录。 | 39| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_StartSelfUIAbility](_ability_runtime.md#oh_abilityruntime_startselfuiability)([AbilityBase_Want](_ability_base.md#abilitybase_want) *want) | 启动当前应用的UIAbility。 | 40| [AbilityRuntime_ErrorCode](_ability_runtime.md#abilityruntime_errorcode) [OH_AbilityRuntime_StartSelfUIAbilityWithStartOptions](_ability_runtime.md#oh_abilityruntime_startselfuiabilitywithstartoptions)([AbilityBase_Want](_ability_base.md#abilitybase_want) *want, [AbilityRuntime_StartOptions](_ability_runtime.md#abilityruntime_startoptions) *options) | 启动当前应用的UIAbility。 |