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提交 7d77452b 编写于 作者: A Annie_wang
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update docs 

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>
上级 caa12d24
展开全部 隐藏空白更改
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Showing with 184 addition and 190 deletion
en/application-dev/reference/apis/js-apis-fileAccess.md
浏览文件 @ 7d77452b
......@@ -17,7 +17,7 @@ import fileAccess from '@ohos.file.fileAccess';
getFileAccessAbilityInfo( ) : Promise&lt;Array&lt;Want&gt;&gt;
Obtains information about all wants with **extension** set to **fileAcesss** in the system. A want is a basic communication component used to start services. This API uses a promise to return the result.
Obtains information about all wants with **extension** set to **fileAccess** in the system. A want is a basic communication component used to start services. This API uses a promise to return the result.
**System capability**: SystemCapability.FileManagement.UserFileService
......@@ -25,9 +25,9 @@ Obtains information about all wants with **extension** set to **fileAcesss** in
**Return value**
| Type| Description|
| --- | -- |
| Promise&lt;Array&lt;Want&gt;&gt; | Promise used to return the **want** information obtained.|
| Type| Description|
| --- | -- |
| Promise&lt;Array&lt;Want&gt;&gt; | Promise used to return the **want** information obtained.|
**Example**
......@@ -47,7 +47,7 @@ Obtains information about all wants with **extension** set to **fileAcesss** in
getFileAccessAbilityInfo(callback: AsyncCallback&lt;Array&lt;Want&gt;&gt;): void;
Obtains information about all wants with **extension** set to **fileAcesss** in the system. A want is a basic communication component used to start services. This API uses an asynchronous callback to return the result.
Obtains information about all wants with **extension** set to **fileAccess** in the system. A want is a basic communication component used to start services. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.FileManagement.UserFileService
......@@ -55,9 +55,9 @@ Obtains information about all wants with **extension** set to **fileAcesss** in
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| callback | AsyncCallback&lt;Array&lt;Want&gt;&gt; | Yes| Promise used to return the **want** information obtained.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| callback | AsyncCallback&lt;Array&lt;Want&gt;&gt; | Yes| Promise used to return the **want** information obtained.|
**Example**
......@@ -89,16 +89,16 @@ Synchronously creates a **Helper** object to connect to the specified wants. The
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| context | Context | Yes| Context of the ability.|
| wants | Array&lt;Want&gt; | Yes| Wants to connect.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| context | Context | Yes| Context of the ability.|
| wants | Array&lt;Want&gt; | Yes| Wants to connect.|
**Return value**
| Type| Description|
| --- | -- |
| FileAccessHelper | **Helper** object created.|
| Type| Description|
| --- | -- |
| FileAccessHelper | **Helper** object created.|
**Example**
......@@ -114,7 +114,7 @@ Synchronously creates a **Helper** object to connect to the specified wants. The
},
]
try {
// this.context is passed by MainAbility.
// this.context is passed by EntryAbility.
fileAccessHelper = fileAccess.createFileAccessHelper(this.context, wantInfos);
if (!fileAccessHelper)
console.error("createFileAccessHelper interface returns an undefined object");
......@@ -136,15 +136,15 @@ Synchronously creates a **Helper** object to connect to all file management serv
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| context | Context | Yes| Context of the ability.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| context | Context | Yes| Context of the ability.|
**Return value**
| Type| Description|
| --- | -- |
| FileAccessHelper | **Helper** object created.|
| Type| Description|
| --- | -- |
| FileAccessHelper | **Helper** object created.|
**Example**
......@@ -153,7 +153,7 @@ Synchronously creates a **Helper** object to connect to all file management serv
let fileAccesssHelperAllServer = null;
// Create a Helper object to interact with all file management services configured with fileAccess in the system.
try {
// this.context is passed by MainAbility.
// this.context is passed by EntryAbility.
fileAccesssHelperAllServer = fileAccess.createFileAccessHelper(this.context);
if (!fileAccesssHelperAllServer)
console.error("createFileAccessHelper interface returns an undefined object");
......@@ -167,8 +167,7 @@ Synchronously creates a **Helper** object to connect to all file management serv
getRoots( ) : Promise&lt;RootIterator&gt;
Obtains information about the device root nodes of the file management service type connected to the **Helper** object. This API uses a promise to return a **RootIterator** object, which
returns [RootInfo](#rootinfo) by using [next()](#rootiteratornext).
Obtains information about the device root nodes of the file management service type connected to the **Helper** object. This API uses a promise to return a **RootIterator** object, which returns [RootInfo](#rootinfo) by using [next()](#rootiteratornext).
**System capability**: SystemCapability.FileManagement.UserFileService
......@@ -176,9 +175,9 @@ returns [RootInfo](#rootinfo) by using [next()](#rootiteratornext).
**Return value**
| Type| Description|
| --- | -- |
| Promise&lt;RootIterator&gt; | Promise used to return the **RootIterator** object obtained.|
| Type| Description|
| --- | -- |
| Promise&lt;RootIterator&gt; | Promise used to return the **RootIterator** object obtained.|
**Example**
......@@ -211,8 +210,7 @@ returns [RootInfo](#rootinfo) by using [next()](#rootiteratornext).
getRoots(callback:AsyncCallback&lt;RootIterator&gt;) : void;
Obtains information about the device root nodes of the file management service type connected to the **Helper** object. This API uses an asynchronous callback to return the result.
The callback has a **RootIterator** object, which returns [RootInfo](#rootinfo) through [next()](#rootiteratornext).
Obtains information about the device root nodes of the file management service type connected to the **Helper** object. This API uses an asynchronous callback to return the result. The callback has a **RootIterator** object, which returns [RootInfo](#rootinfo) through [next()](#rootiteratornext).
**System capability**: SystemCapability.FileManagement.UserFileService
......@@ -220,9 +218,9 @@ The callback has a **RootIterator** object, which returns [RootInfo](#rootinfo)
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| callback | AsyncCallback&lt;RootIterator&gt; | Yes| Promise used to return the **RootIterator** object obtained.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| callback | AsyncCallback&lt;RootIterator&gt; | Yes| Promise used to return the **RootIterator** object obtained.|
**Example**
......@@ -263,16 +261,16 @@ Synchronously obtains the **FileIterator** object of the first-level files (file
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | -- | -- |
| filter | Filter | No| **Filter** object. |
| Name| Type| Mandatory| Description|
| --- | --- | -- | -- |
| filter | Filter | No| **Filter** object. |
**Return value**
| Type| Description|
| --- | -- |
| FileIterator | **FileIterator** object obtained.|
| Type| Description|
| --- | -- |
| FileIterator | **FileIterator** object obtained.|
**Example**
......@@ -314,15 +312,15 @@ Recursively obtains the **FileIterator** object of the files matching the condit
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | -- | -- |
| filter | Filter | No| **Filter** object. |
| Name| Type| Mandatory| Description|
| --- | --- | -- | -- |
| filter | Filter | No| **Filter** object. |
**Return value**
| Type| Description|
| --- | -- |
| FileIterator | **FileIterator** object obtained.|
| Type| Description|
| --- | -- |
| FileIterator | **FileIterator** object obtained.|
**Example**
......@@ -364,15 +362,15 @@ Synchronously obtains the **FileIterator** object of the next-level files (file
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | -- | -- |
| filter | Filter | No| **Filter** object. |
| Name| Type| Mandatory| Description|
| --- | --- | -- | -- |
| filter | Filter | No| **Filter** object. |
**Return value**
| Type| Description|
| --- | -- |
| FileIterator | **FileIterator** object obtained.|
| Type| Description|
| --- | -- |
| FileIterator | **FileIterator** object obtained.|
**Example**
......@@ -414,16 +412,16 @@ Recursively obtains the **FileIterator** object of the files matching the condit
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | -- | -- |
| filter | Filter | No| **Filter** object. |
| Name| Type| Mandatory| Description|
| --- | --- | -- | -- |
| filter | Filter | No| **Filter** object. |
**Return value**
| Type| Description|
| --- | -- |
| FileIterator | **FileIterator** object obtained.|
| Type| Description|
| --- | -- |
| FileIterator | **FileIterator** object obtained.|
**Example**
......@@ -465,10 +463,10 @@ Creates a file in a directory. This API uses a promise to return the result.
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the parent directory for the file to create.|
| displayName | string | Yes| Name of the file to create. By default, the name of a local file must contain the file name extension.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the parent directory for the file to create.|
| displayName | string | Yes| Name of the file to create. By default, the name of a local file must contain the file name extension.|
**Return value**
......@@ -510,11 +508,11 @@ Creates a file in a directory. This API uses an asynchronous callback to return
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the parent directory for the file to create.|
| displayName | string | Yes| Name of the file to create. By default, the name of a local file must contain the file name extension.|
| callback | AsyncCallback&lt;string&gt; | Yes| Promise used to return the URI of the file created.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the parent directory for the file to create.|
| displayName | string | Yes| Name of the file to create. By default, the name of a local file must contain the file name extension.|
| callback | AsyncCallback&lt;string&gt; | Yes| Promise used to return the URI of the file created.|
**Example**
......@@ -550,10 +548,10 @@ Creates a folder in a directory. This API uses a promise to return the result.
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| parentUri | string | Yes| URI of the parent directory for the folder to create.|
| displayName | string | Yes| Name of the folder to create.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| parentUri | string | Yes| URI of the parent directory for the folder to create.|
| displayName | string | Yes| Name of the folder to create.|
**Return value**
......@@ -595,11 +593,11 @@ Creates a folder in a directory. This API uses an asynchronous callback to retur
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| parentUri | string | Yes| URI of the parent directory for the folder to create.|
| displayName | string | Yes| Name of the folder to create.|
| callback | AsyncCallback&lt;string&gt; | Yes| Promise used to return the URI of the folder created.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| parentUri | string | Yes| URI of the parent directory for the folder to create.|
| displayName | string | Yes| Name of the folder to create.|
| callback | AsyncCallback&lt;string&gt; | Yes| Promise used to return the URI of the folder created.|
**Example**
......@@ -635,16 +633,16 @@ Opens a file. This API uses a promise to return the result.
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file to open.|
| flags | [OPENFLAGS](#openflags) | Yes| File open mode.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file to open.|
| flags | [OPENFLAGS](#openflags) | Yes| File open mode.|
**Return value**
| Type| Description|
| --- | -- |
| Promise&lt;number&gt; | Promise used to return the handle to the file opened.|
| Promise&lt;number&gt; | Promise used to return the file descriptor of the file opened.|
**Example**
......@@ -673,11 +671,11 @@ Opens a file. This API uses an asynchronous callback to return the result.
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file to open.|
| flags | [OPENFLAGS](#openflags) | Yes| File open mode.|
| callback | AsyncCallback&lt;number&gt; | Yes| Promise used to return the handle to the file opened.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file to open.|
| flags | [OPENFLAGS](#openflags) | Yes| File open mode.|
| callback | AsyncCallback&lt;number&gt; | Yes| Callback invoked to return the file descriptor of the file opened.|
**Example**
......@@ -712,9 +710,9 @@ Deletes a file or folder. This API uses a promise to return the result.
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file or folder to delete.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file or folder to delete.|
**Return value**
......@@ -751,10 +749,10 @@ Deletes a file or folder. This API uses an asynchronous callback to return the r
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file or folder to delete.|
| callback | AsyncCallback&lt;number&gt; | Yes| Promise used to return the result.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file or folder to delete.|
| callback | AsyncCallback&lt;number&gt; | Yes| Promise used to return the result.|
**Example**
......@@ -789,10 +787,10 @@ Moves a file or folder. This API uses a promise to return the result.
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| sourceFile | string | Yes| URI of the file or folder to move.|
| destFile | string | Yes| URI of the folder to which the file or folder will be moved.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| sourceFile | string | Yes| URI of the file or folder to move.|
| destFile | string | Yes| URI of the folder to which the file or folder will be moved.|
**Return value**
......@@ -829,11 +827,11 @@ Moves a file or folder. This API uses an asynchronous callback to return the res
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| sourceFile | string | Yes| URI of the file or folder to move.|
| destFile | string | Yes| URI of the folder to which the file or folder will be moved.|
| callback | AsyncCallback&lt;string&gt; | Yes| Promise used to return the URI of the file or folder in the destination directory.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| sourceFile | string | Yes| URI of the file or folder to move.|
| destFile | string | Yes| URI of the folder to which the file or folder will be moved.|
| callback | AsyncCallback&lt;string&gt; | Yes| Promise used to return the URI of the file or folder in the destination directory.|
**Example**
......@@ -869,10 +867,10 @@ Renames a file or folder. This API uses a promise to return the result.
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file or folder to rename.|
| displayName | string | Yes| New name of the file or folder, which can contain the file name extension.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file or folder to rename.|
| displayName | string | Yes| New name of the file or folder, which can contain the file name extension.|
**Return value**
......@@ -908,11 +906,11 @@ Renames a file or folder. This API uses an asynchronous callback to return the r
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file or folder to rename.|
| displayName | string | Yes| New name of the file or folder, which can contain the file name extension.|
| callback | AsyncCallback&lt;string&gt; | Yes| Promise used to return the URI of the renamed file or folder.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| uri | string | Yes| URI of the file or folder to rename.|
| displayName | string | Yes| New name of the file or folder, which can contain the file name extension.|
| callback | AsyncCallback&lt;string&gt; | Yes| Promise used to return the URI of the renamed file or folder.|
**Example**
......@@ -947,9 +945,9 @@ Checks whether a file or folder exists. This API uses a promise to return the re
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| sourceFileUri | string | Yes| URI of the file or folder.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| sourceFileUri | string | Yes| URI of the file or folder.|
**Return value**
......@@ -988,10 +986,10 @@ Checks whether a file or folder exists. This API uses an asynchronous callback t
**Parameters**
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| sourceFileUri | string | Yes| URI of the file or folder.|
| callback | AsyncCallback&lt;boolean&gt; | Yes| Promise used to return the result.|
| Name| Type| Mandatory| Description|
| --- | --- | --- | -- |
| sourceFileUri | string | Yes| URI of the file or folder.|
| callback | AsyncCallback&lt;boolean&gt; | Yes| Promise used to return the result.|
**Example**
......
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