1e41f4b71Sopenharmony_ci# @ohos.bundle.defaultAppManager (默认应用管理)
2e41f4b71Sopenharmony_ci
3e41f4b71Sopenharmony_ci本模块提供查询默认应用的能力,支持查询当前应用是否是默认应用。
4e41f4b71Sopenharmony_ci
5e41f4b71Sopenharmony_ci> **说明:**
6e41f4b71Sopenharmony_ci>
7e41f4b71Sopenharmony_ci> 本模块首批接口从API version 9开始支持。后续版本的新增接口,采用上角标单独标记接口的起始版本。
8e41f4b71Sopenharmony_ci
9e41f4b71Sopenharmony_ci## 导入模块
10e41f4b71Sopenharmony_ci
11e41f4b71Sopenharmony_ci```ts
12e41f4b71Sopenharmony_ciimport { defaultAppManager } from '@kit.AbilityKit';
13e41f4b71Sopenharmony_ci```
14e41f4b71Sopenharmony_ci
15e41f4b71Sopenharmony_ci## defaultAppManager.ApplicationType
16e41f4b71Sopenharmony_ci
17e41f4b71Sopenharmony_ci默认应用的应用类型。
18e41f4b71Sopenharmony_ci
19e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.BundleManager.BundleFramework.DefaultApp
20e41f4b71Sopenharmony_ci
21e41f4b71Sopenharmony_ci| 名称   | 值 | 说明                                   |
22e41f4b71Sopenharmony_ci| -------- | -------------------------------------- | -------------------------------------- |
23e41f4b71Sopenharmony_ci| BROWSER  | 'Web Browser' | 默认浏览器。                            |
24e41f4b71Sopenharmony_ci| IMAGE    | 'Image Gallery' | 默认图片查看器。                         |
25e41f4b71Sopenharmony_ci| AUDIO    | 'Audio Player' | 默认音频播放器。                         |
26e41f4b71Sopenharmony_ci| VIDEO    | 'Video Player' | 默认视频播放器。                         |
27e41f4b71Sopenharmony_ci| PDF      | 'PDF Viewer' | 默认PDF文档查看器。                      |
28e41f4b71Sopenharmony_ci| WORD     | 'Word Viewer' | 默认WORD文档查看器。                     |
29e41f4b71Sopenharmony_ci| EXCEL    | 'Excel Viewer' | 默认EXCEL文档查看器。                    |
30e41f4b71Sopenharmony_ci| PPT      | 'PPT Viewer' | 默认PPT文档查看器。                      |
31e41f4b71Sopenharmony_ci| EMAIL<sup>12+</sup>    | 'Email' | 默认邮件。                      |
32e41f4b71Sopenharmony_ci
33e41f4b71Sopenharmony_ci## defaultAppManager.isDefaultApplication
34e41f4b71Sopenharmony_ci
35e41f4b71Sopenharmony_ciisDefaultApplication(type: string): Promise\<boolean>
36e41f4b71Sopenharmony_ci
37e41f4b71Sopenharmony_ci以异步方法根据系统已定义的应用类型或者[UniformDataType](../apis-arkdata/js-apis-data-uniformTypeDescriptor.md)类型判断当前应用是否是该类型的默认应用,使用Promise形式返回结果。
38e41f4b71Sopenharmony_ci
39e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.BundleManager.BundleFramework.DefaultApp
40e41f4b71Sopenharmony_ci
41e41f4b71Sopenharmony_ci**参数:**
42e41f4b71Sopenharmony_ci
43e41f4b71Sopenharmony_ci| 参数名         | 类型     | 必填   | 说明                                      |
44e41f4b71Sopenharmony_ci| ----------- | ------ | ---- | --------------------------------------- |
45e41f4b71Sopenharmony_ci| type  | string | 是    | 要查询的应用类型,取[ApplicationType](#defaultappmanagerapplicationtype)或者[UniformDataType](../apis-arkdata/js-apis-data-uniformTypeDescriptor.md)类型中的值。                           |
46e41f4b71Sopenharmony_ci
47e41f4b71Sopenharmony_ci**返回值:**
48e41f4b71Sopenharmony_ci
49e41f4b71Sopenharmony_ci| 类型                        | 说明                 |
50e41f4b71Sopenharmony_ci| ------------------------- | ------------------ |
51e41f4b71Sopenharmony_ci| Promise\<boolean> | Promise形式返回当前应用是否是默认应用,true表示是默认应用,false表示不是默认应用。 |
52e41f4b71Sopenharmony_ci
53e41f4b71Sopenharmony_ci**错误码:**
54e41f4b71Sopenharmony_ci
55e41f4b71Sopenharmony_ci以下错误码的详细介绍请参见[通用错误码](../errorcode-universal.md)。
56e41f4b71Sopenharmony_ci
57e41f4b71Sopenharmony_ci| 错误码ID | 错误信息                                                    |
58e41f4b71Sopenharmony_ci| -------- | ---------------------------------------------------------- |
59e41f4b71Sopenharmony_ci| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types. |
60e41f4b71Sopenharmony_ci| 801 | Capability not supported. |
61e41f4b71Sopenharmony_ci
62e41f4b71Sopenharmony_ci**示例:**
63e41f4b71Sopenharmony_ci
64e41f4b71Sopenharmony_ci```ts
65e41f4b71Sopenharmony_ciimport { defaultAppManager } from '@kit.AbilityKit';
66e41f4b71Sopenharmony_ciimport { BusinessError } from '@kit.BasicServicesKit';
67e41f4b71Sopenharmony_ci
68e41f4b71Sopenharmony_cidefaultAppManager.isDefaultApplication(defaultAppManager.ApplicationType.BROWSER)
69e41f4b71Sopenharmony_ci  .then((data) => {
70e41f4b71Sopenharmony_ci    console.info('Operation successful. IsDefaultApplication ? ' + JSON.stringify(data));
71e41f4b71Sopenharmony_ci  }).catch((error: BusinessError) => {
72e41f4b71Sopenharmony_ci    console.error('Operation failed. Cause: ' + JSON.stringify(error));
73e41f4b71Sopenharmony_ci  });
74e41f4b71Sopenharmony_ci```
75e41f4b71Sopenharmony_ci
76e41f4b71Sopenharmony_ci## defaultAppManager.isDefaultApplication
77e41f4b71Sopenharmony_ci
78e41f4b71Sopenharmony_ciisDefaultApplication(type: string, callback: AsyncCallback\<boolean>): void
79e41f4b71Sopenharmony_ci
80e41f4b71Sopenharmony_ci以异步方法根据系统已定义的应用类型或者[UniformDataType](../apis-arkdata/js-apis-data-uniformTypeDescriptor.md)类型判断当前应用是否是该类型的默认应用,使用callback形式返回结果。
81e41f4b71Sopenharmony_ci
82e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.BundleManager.BundleFramework.DefaultApp
83e41f4b71Sopenharmony_ci
84e41f4b71Sopenharmony_ci**参数:**
85e41f4b71Sopenharmony_ci
86e41f4b71Sopenharmony_ci| 参数名         | 类型                              | 必填   | 说明                                      |
87e41f4b71Sopenharmony_ci| ----------- | ------------------------------- | ---- | --------------------------------------- |
88e41f4b71Sopenharmony_ci| type  | string                          | 是    | 要查询的应用类型,取[ApplicationType](#defaultappmanagerapplicationtype)或者[UniformDataType](../apis-arkdata/js-apis-data-uniformTypeDescriptor.md)类型中的值。                            |
89e41f4b71Sopenharmony_ci| callback    | AsyncCallback\<boolean> | 是    | 程序启动作为入参的回调函数,返回当前应用是否是默认应用,true表示是默认应用,false表示不是默认应用。 |
90e41f4b71Sopenharmony_ci
91e41f4b71Sopenharmony_ci**错误码:**
92e41f4b71Sopenharmony_ci
93e41f4b71Sopenharmony_ci以下错误码的详细介绍请参见[通用错误码](../errorcode-universal.md)。
94e41f4b71Sopenharmony_ci
95e41f4b71Sopenharmony_ci| 错误码ID | 错误信息                                                    |
96e41f4b71Sopenharmony_ci| -------- | ---------------------------------------------------------- |
97e41f4b71Sopenharmony_ci| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types. |
98e41f4b71Sopenharmony_ci| 801 | Capability not supported. |
99e41f4b71Sopenharmony_ci
100e41f4b71Sopenharmony_ci**示例:**
101e41f4b71Sopenharmony_ci
102e41f4b71Sopenharmony_ci```ts
103e41f4b71Sopenharmony_ciimport { defaultAppManager } from '@kit.AbilityKit';
104e41f4b71Sopenharmony_ciimport { BusinessError } from '@kit.BasicServicesKit';
105e41f4b71Sopenharmony_ci
106e41f4b71Sopenharmony_cidefaultAppManager.isDefaultApplication(defaultAppManager.ApplicationType.BROWSER, (err: BusinessError, data) => {
107e41f4b71Sopenharmony_ci  if (err) {
108e41f4b71Sopenharmony_ci    console.error('Operation failed. Cause: ' + JSON.stringify(err));
109e41f4b71Sopenharmony_ci    return;
110e41f4b71Sopenharmony_ci  }
111e41f4b71Sopenharmony_ci  console.info('Operation successful. IsDefaultApplication ? ' + JSON.stringify(data));
112e41f4b71Sopenharmony_ci});
113e41f4b71Sopenharmony_ci```
114e41f4b71Sopenharmony_ci
115e41f4b71Sopenharmony_ci## defaultAppManager.isDefaultApplicationSync<sup>10+</sup>
116e41f4b71Sopenharmony_ci
117e41f4b71Sopenharmony_ciisDefaultApplicationSync(type: string): boolean
118e41f4b71Sopenharmony_ci
119e41f4b71Sopenharmony_ci以同步方法根据系统已定义的应用类型或者[UniformDataType](../apis-arkdata/js-apis-data-uniformTypeDescriptor.md)类型判断当前应用是否是该类型的默认应用,使用boolean形式返回结果。
120e41f4b71Sopenharmony_ci
121e41f4b71Sopenharmony_ci**系统能力:** SystemCapability.BundleManager.BundleFramework.DefaultApp
122e41f4b71Sopenharmony_ci
123e41f4b71Sopenharmony_ci**参数:**
124e41f4b71Sopenharmony_ci
125e41f4b71Sopenharmony_ci| 参数名 | 类型   | 必填 | 说明                                     |
126e41f4b71Sopenharmony_ci| -------| ------ | ---- | --------------------------------------- |
127e41f4b71Sopenharmony_ci|  type  | string | 是   | 要查询的应用类型,取[ApplicationType](#defaultappmanagerapplicationtype)或者[UniformDataType](../apis-arkdata/js-apis-data-uniformTypeDescriptor.md)类型中的值。   |
128e41f4b71Sopenharmony_ci
129e41f4b71Sopenharmony_ci**返回值:**
130e41f4b71Sopenharmony_ci
131e41f4b71Sopenharmony_ci| 类型    | 说明                 |
132e41f4b71Sopenharmony_ci| ------- | -------------------- |
133e41f4b71Sopenharmony_ci| boolean | 返回当前应用是否是默认应用,true表示是默认应用,false表示不是默认应用。 |
134e41f4b71Sopenharmony_ci
135e41f4b71Sopenharmony_ci**错误码:**
136e41f4b71Sopenharmony_ci
137e41f4b71Sopenharmony_ci以下错误码的详细介绍请参见[通用错误码](../errorcode-universal.md)。
138e41f4b71Sopenharmony_ci
139e41f4b71Sopenharmony_ci| 错误码ID | 错误信息                                                    |
140e41f4b71Sopenharmony_ci| -------- | ---------------------------------------------------------- |
141e41f4b71Sopenharmony_ci| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types. |
142e41f4b71Sopenharmony_ci| 801 | Capability not supported. |
143e41f4b71Sopenharmony_ci
144e41f4b71Sopenharmony_ci**示例:**
145e41f4b71Sopenharmony_ci
146e41f4b71Sopenharmony_ci```ts
147e41f4b71Sopenharmony_ciimport { defaultAppManager } from '@kit.AbilityKit';
148e41f4b71Sopenharmony_ci
149e41f4b71Sopenharmony_citry {
150e41f4b71Sopenharmony_ci  let data = defaultAppManager.isDefaultApplicationSync(defaultAppManager.ApplicationType.BROWSER)
151e41f4b71Sopenharmony_ci  console.info('Operation successful. IsDefaultApplicationSync ? ' + JSON.stringify(data));
152e41f4b71Sopenharmony_ci} catch(error) {
153e41f4b71Sopenharmony_ci  console.error('Operation failed. Cause: ' + JSON.stringify(error));
154e41f4b71Sopenharmony_ci};
155e41f4b71Sopenharmony_ci```