Skip to content

D
Docs

OpenHarmony / Docs
1 年多 前同步成功

通知 159
Star 292
Fork 28
D
Docs
未验证 提交 6519ac1b 编写于 作者: O openharmony_ci 提交者： Gitee
浏览文件
操作

!5977 文档修改 

Merge pull request !5977 from wangbo/master
上级 333f5c8a 8ff04328
显示空白变更内容
内联 并排
Showing with 141 addition and 239 deletion
zh-cn/application-dev/reference/apis/js-apis-document.md
浏览文件 @ 6519ac1b
......@@ -12,7 +12,7 @@ import document from '@ohos.document';
## document.choose
choose(type:string[]): Promise<string>
choose(types:string[]): Promise<string>
通过文件管理器选择文件，异步返回文件URI，使用promise形式返回结果。
......@@ -22,7 +22,7 @@ choose(type:string[]): Promise<string>
| 参数名 | 类型 | 必填 | 说明 |
| ------ | ------ | ---- | ---------------------------- |
| type | string[] | 否 | 限定文件选择的类型 |
| types | string[] | 否 | 限定文件选择的类型 |
- 返回值：
......@@ -33,7 +33,8 @@ choose(type:string[]): Promise<string>
- 示例：
```js
await document.choose(type);
let tpyes = [];
document.choose(types);
```
## document.choose
......@@ -52,13 +53,14 @@ choose(callback:AsyncCallback<string>): void
- 示例：
```js
await document.choose(function(err, uri) {
let uri = "";
document.choose(function(err, uri) {
//do something with uri
});
```
## document.choose
choose(type:string[], callback:AsyncCallback<string>): void
choose(types:string[], callback:AsyncCallback<string>): void
通过文件管理器选择文件，异步返回文件URI，使用callback形式返回结果。
......@@ -68,20 +70,22 @@ choose(type:string[], callback:AsyncCallback<string>): void
| 参数名 | 类型 | 必填 | 说明 |
| -------- | --------------------------- | ---- | ---------------------------- |
| type | string[] | 否 | 限定选择文件的类型 |
| types | string[] | 否 | 限定选择文件的类型 |
| callback | AsyncCallback<string> | 是 | 异步获取对应文件URI（注：当前返回错误码） |
- 示例：
```js
await document.choose(type, function(err, uri) {
let types = [];
let uri = "";
document.choose(types, function(err, uri) {
//do something with uri
});
```
## document.show
show(url:string, type:string):Promise<number>
show(url:string, types:string):Promise<number>
异步打开URI对应的文件，使用promise形式返回结果。
......@@ -92,7 +96,7 @@ show(url:string, type:string):Promise<number>
| 参数 | 类型 | 必填 | 说明 |
| ---- | ------ | ---- | ---------------------------- |
| uri | string | 是 | 待打开的文件URI |
| type | string | 是 | 待打开文件的类型 |
| types | string | 是 | 待打开文件的类型 |
- 返回值：
......@@ -103,12 +107,14 @@ show(url:string, type:string):Promise<number>
- 示例：
```js
await document.show(uri, type);
let types = "";
let uri = "";
document.show(uri, types);
```
## document.show
show(url:string, type:string, callback:AsyncCallback<void>): void
show(url:string, types:string, callback:AsyncCallback<void>): void
异步打开URI对应的文件，使用callback形式返回结果。
......@@ -119,13 +125,15 @@ show(url:string, type:string, callback:AsyncCallback<void>): void
| 参数名 | 类型 | 必填 | 说明 |
| -------- | --------------------------- | ---- | ---------------------------- |
| uri | string | 是 | 待打开的文件URI |
| type | string | 是 | 待打开文件的类型 |
| types | string | 是 | 待打开文件的类型 |
| callback | AsyncCallback<void> | 是 | 异步打开uri对应文件（注：当前返回错误码） |
- 示例：
```js
await document.show(uri, type, function(err) {
let types = "";
let uri = "";
document.show(uri, types, function(err) {
//do something
});
```
......
zh-cn/application-dev/reference/apis/js-apis-fileio.md
浏览文件 @ 6519ac1b
......@@ -18,10 +18,7 @@ import fileio from '@ohos.fileio';
```js
import featureAbility from '@ohos.ability.featureAbility';
let context = featureAbility.getContext();
let path = '';
context.getFilesDir().then((data) => {
path = data;
})
let path = context.getFilesDir();
```
......@@ -327,52 +324,11 @@ closeSync(fd: number): void
**示例：**
```js
let fd = fileio.openSync(path);
fileio.closeSync(fd);
```
## fileio.close<sup>7+</sup>
close(): Promise&lt;void&gt;
关闭文件流，使用Promise异步回调。
**系统能力**：SystemCapability.FileManagement.File.FileIO
**返回值：**
| 类型 | 说明 |
| ------------------- | ---------------------------- |
| Promise&lt;void&gt; | Promise对象。无返回值。 |
**示例：**
```js
fileio.close().then(function(){
console.info("close file stream succeed");
}).catch(function(err){
console.info("close file stream failed with error:"+ err);
});
```
## fileio.close<sup>7+</sup>
close(callback: AsyncCallback&lt;void&gt;): void
关闭文件流，使用callback异步回调。
**系统能力**：SystemCapability.FileManagement.File.FileIO
**参数：**
| 参数名 | 类型 | 必填 | 说明 |
| -------- | ------------------------- | ---- | ------------- |
| callback | AsyncCallback&lt;void&gt; | 是 | 异步关闭文件流之后的回调。 |
**示例：**
```js
fileio.close(function(err){
// do something
});
```
## fileio.copyFile
......@@ -397,7 +353,8 @@ copyFile(src:string | number, dest:string | number, mode?:number):Promise&lt;voi
**示例：**
```js
fileio.copyFile(src, dest).then(function(){
let dest = "";
fileio.copyFile(path, dest).then(function(){
console.info("copyFile succeed");
}).catch(function(err){
console.info("copyFile failed with error:"+ err);
......@@ -423,7 +380,8 @@ copyFile(src: string | number, dest: string | number, mode: number, callback: As
**示例：**
```js
fileio.copyFile(src, dest, function (err) {
let dest = "";
fileio.copyFile(path, dest, function (err) {
// do something
});
```
......@@ -446,7 +404,8 @@ copyFileSync(src: string | number, dest: string | number, mode?: number): void
**示例：**
```js
fileio.copyFileSync(src, dest);
let dest = "";
fileio.copyFileSync(path, dest);
```
......@@ -589,7 +548,7 @@ openSync(path:string, flags?:number, mode?:number): number
| ------ | ------ | ---- | ------------------------------------------------------------ |
| path | string | 是 | 待打开文件的应用沙箱路径。 |
| flags | number | 否 | 打开文件的选项，必须指定如下选项中的一个，默认以只读方式打开：<br/>-&nbsp;0o0：只读打开。<br/>-&nbsp;0o1：只写打开。<br/>-&nbsp;0o2：读写打开。<br/>同时，也可给定如下选项，以按位或的方式追加，默认不给定任何额外选项：<br/>-&nbsp;0o100：若文件不存在，则创建文件。使用该选项时必须指定第三个参数&nbsp;mode。<br/>-&nbsp;0o200：如果追加了0o100选项，且文件已经存在，则出错。<br/>-&nbsp;0o1000：如果文件存在且以只写或读写的方式打开文件，则将其长度裁剪为零。<br/>-&nbsp;0o2000：以追加方式打开，后续写将追加到文件末尾。<br/>-&nbsp;0o4000：如果path指向FIFO、块特殊文件或字符特殊文件，则本次打开及后续&nbsp;IO&nbsp;进行非阻塞操作。<br/>-&nbsp;0o200000：如果path不指向目录，则出错。<br/>-&nbsp;0o400000：如果path指向符号链接，则出错。<br/>-&nbsp;0o4010000：以同步IO的方式打开文件。 |
| mode | number | 否 | 若创建文件，则指定文件的权限，可给定如下权限，以按位或的方式追加权限，默认给定0o666。<br/>-&nbsp;0o666：所有者具有读、写权限，所有用户组具有读、写权限，其余用户具有读、写权限。<br/>-&nbsp;0o640：所有者具有读、写权限，所有用户组具有读权限。<br/>-&nbsp;0o700：所有者具有读、写及可执行权限。<br/>-&nbsp;0o400：所有者具有读权限。<br/>-&nbsp;0o200：所有者具有写权限。<br/>-&nbsp;0o100：所有者具有可执行权限。<br/>-&nbsp;0o070：所有用户组具有读、写及可执行权限。<br/>-&nbsp;0o040：所有用户组具有读权限。<br/>-&nbsp;0o020：所有用户组具有写权限。<br/>-&nbsp;0o010：所有用户组具有可执行权限。<br/>-&nbsp;0o007：其余用户具有读、写及可执行权限。<br/>-&nbsp;0o004：其余用户具有读权限。<br/>-&nbsp;0o002：其余用户具有写权限。<br/>-&nbsp;0o001：其余用户具有可执行权限。<br/>创建出的文件权限受umask影响，umask随进程启动确定，其修改当前不开放。 |
| mode | number | 否 | 若创建文件，则指定文件的权限，可给定如下权限，以按位或的方式追加权限，默认给定0o666。<br/>-&nbsp;0o666：所有者具有读、写权限，所有用户组具有读、写权限，其余用户具有读、写权限。<br/>-&nbsp;0o700：所有者具有读、写及可执行权限。<br/>-&nbsp;0o400：所有者具有读权限。<br/>-&nbsp;0o200：所有者具有写权限。<br/>-&nbsp;0o100：所有者具有可执行权限。<br/>-&nbsp;0o070：所有用户组具有读、写及可执行权限。<br/>-&nbsp;0o040：所有用户组具有读权限。<br/>-&nbsp;0o020：所有用户组具有写权限。<br/>-&nbsp;0o010：所有用户组具有可执行权限。<br/>-&nbsp;0o007：其余用户具有读、写及可执行权限。<br/>-&nbsp;0o004：其余用户具有读权限。<br/>-&nbsp;0o002：其余用户具有写权限。<br/>-&nbsp;0o001：其余用户具有可执行权限。<br/>创建出的文件权限受umask影响，umask随进程启动确定，其修改当前不开放。 |
**返回值：**
| 类型 | 说明 |
......@@ -598,15 +557,7 @@ openSync(path:string, flags?:number, mode?:number): number
**示例：**
```js
let fd = fileio.openSync(path, 0o102, 0o640);
```
```js
let fd = fileio.openSync(path, 0o102, 0o666);
fileio.writeSync(fd, 'hello world');
let fd1 = fileio.openSync(path, 0o2002);
fileio.writeSync(fd1, 'hello world');
let num = fileio.readSync(fd1, new ArrayBuffer(4096), {position: 0});
console.info("num == " + num);
let fd = fileio.openSync(path);
```
......@@ -879,7 +830,7 @@ write(fd: number, buffer: ArrayBuffer | string, options?: {
**示例：**
```js
let fd = fileio.openSync(fpath, 0o100 | 0o2, 0o666);
let fd = fileio.openSync(path, 0o100 | 0o2, 0o666);
fileio.write(fd, "hello, world").then(function(number){
console.info("write data to file succeed and size is:"+ number);
}).catch(function(err){
......@@ -976,7 +927,7 @@ hash(path: string, algorithm: string): Promise&lt;string&gt;
fileio.hash(path, "sha256").then(function(str){
console.info("calculate file hash succeed:"+ str);
}).catch(function(error){
console.info("calculate file hash failed with error:"+ err);
console.info("calculate file hash failed with error:"+ error);
});
```
......@@ -998,7 +949,7 @@ hash(path: string, algorithm: string, callback: AsyncCallback&lt;string&gt;): vo
**示例：**
```js
fileio.hash(fpath, "sha256", function(err, hashStr) {
fileio.hash(path, "sha256", function(err, hashStr) {
if (hashStr) {
console.info("calculate file hash succeed:"+ hashStr);
}
......@@ -1027,7 +978,7 @@ chmod(path: string, mode: number):Promise&lt;void&gt;
**示例：**
```js
fileio.chmod(path, mode).then(function() {
fileio.chmod(path, 0o400).then(function() {
console.info("chmod succeed");
}).catch(function(err){
console.info("chmod failed with error:"+ err);
......@@ -1052,7 +1003,7 @@ chmod(path: string, mode: number, callback: AsyncCallback&lt;void&gt;): void
**示例：**
```js
fileio.chmod(path, mode, function (err) {
fileio.chmod(path, 0o400, function (err) {
// do something
});
```
......@@ -1074,7 +1025,7 @@ chmodSync(path: string, mode: number): void
**示例：**
```js
fileio.chmodSync(fpath, mode);
fileio.chmodSync(path, 0o400);
```
......@@ -1098,6 +1049,7 @@ fstat(fd: number): Promise&lt;Stat&gt;
**示例：**
```js
let fd = fileio.openSync(path);
fileio.fstat(fd).then(function(stat){
console.info("fstat succeed:"+ JSON.stringify(stat));
}).catch(function(err){
......@@ -1201,6 +1153,8 @@ ftruncate(fd: number, len: number, callback:AsyncCallback&lt;void&gt;): void
**示例：**
```js
let fd = fileio.openSync(path);
let len = 5;
fileio.ftruncate(fd, len, function(err){
// do something
});
......@@ -1223,6 +1177,8 @@ ftruncateSync(fd: number, len?: number): void
**示例：**
```js
let fd = fileio.openSync(path);
let len = 5;
fileio.ftruncateSync(fd, len);
```
......@@ -1248,6 +1204,7 @@ truncate(path: string, len?: number): Promise&lt;void&gt;
**示例：**
```js
let len = 5;
fileio.truncate(path, len).then(function(){
console.info("truncate file succeed");
}).catch(function(err){
......@@ -1273,6 +1230,7 @@ truncate(path: string, len: number, callback:AsyncCallback&lt;void&gt;): void
**示例：**
```js
let len = 5;
fileio.truncate(path, len, function(err){
// do something
});
......@@ -1295,6 +1253,7 @@ truncateSync(path: string, len?: number): void
**示例：**
```js
let len = 5;
fileio.truncateSync(path, len);
```
......@@ -1353,7 +1312,7 @@ readText(filePath: string, options: {
**示例：**
```js
fileio.readText(path, function(err, str){
fileio.readText(path, { position: pos, length: len, encoding: 'UTF-8' }, function (err, str){
// do something
});
```
......@@ -1409,7 +1368,7 @@ lstat(path: string): Promise&lt;Stat&gt;
**示例：**
```js
fileio.lstat(path).then(function(stat){
console.info("get link status succeed:"+ number);
console.info("get link status succeed:"+ stat.rdev);
}).catch(function(err){
console.info("get link status failed with error:"+ err);
});
......@@ -1462,69 +1421,6 @@ lstatSync(path:string): Stat
```
## fileio.read<sup>7+</sup>
read(buffer: ArrayBuffer, options?: {
position?: number;
offset?: number;
length?: number;
}): Promise&lt;ReadOut&gt;
从文件读取数据，使用Promise异步回调。
**系统能力**：SystemCapability.FileManagement.File.FileIO
**参数：**
| 参数名 | 类型 | 必填 | 说明 |
| ------- | ----------- | ---- | ------------------------------------------------------------ |
| buffer | ArrayBuffer | 是 | 用于保存读取到的文件数据的缓冲区。 |
| options | Object | 否 | 支持如下选项：<br/>-&nbsp;offset，number类型，表示将数据读取到缓冲区的位置，即相对于缓冲区首地址的偏移。可选，默认为0。<br/>-&nbsp;length，number类型，表示期望读取数据的长度。可选，默认缓冲区长度减去偏移长度。<br/>约束：offset+length<=buffer.size。 |
**返回值：**
| 类型 | 说明 |
| ---------------------------------- | ------ |
| Promise&lt;[ReadOut](#readout)&gt; | Promise对象。返回读取的结果。 |
**示例：**
```js
fileio.read(new ArrayBuffer(4096)).then(function(readout){
console.info("read file data succeed");
console.log(String.fromCharCode.apply(null, new Uint8Array(readOut.buffer)));
}).catch(function(err){
console.info("read file data failed with error:"+ err);
});
```
## fileio.read<sup>7+</sup>
read(buffer: ArrayBuffer, options: {
position?: number;
offset?: number;
length?: number;
}, callback: AsyncCallback&lt;ReadOut&gt;): void
从文件读取数据，使用callback异步回调。
**系统能力**：SystemCapability.FileManagement.File.FileIO
**参数：**
| 参数名 | 类型 | 必填 | 说明 |
| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
| buffer | ArrayBuffer | 是 | 用于保存读取到的文件数据的缓冲区。 |
| options | Object | 否 | 支持如下选项：<br/>-&nbsp;offset，number类型，表示将数据读取到缓冲区的位置，即相对于缓冲区首地址的偏移。可选，默认为0。<br/>-&nbsp;length，number类型，表示期望读取数据的长度。可选，默认缓冲区长度减去偏移长度。<br/>约束：offset+length<=buffer.size。 |
| callback | AsyncCallback&lt;[ReadOut](#readout)&gt; | 是 | 异步从文件读取数据之后的回调。 |
**示例：**
```js
let buf = new ArrayBuffer(4096);
fileio.read(buf, function (err, readOut) {
if (readOut) {
console.info("read file data succeed");
console.log(String.fromCharCode.apply(null, new Uint8Array(readOut.buffer)));
}
});
```
## fileio.rename<sup>7+</sup>
......@@ -1548,7 +1444,8 @@ rename(oldPath: string, newPath: string): Promise&lt;void&gt;
**示例：**
```js
fileio.rename(oldPath, newPath).then(function() {
let newPath = path +"123";
fileio.rename(path, newPath).then(function() {
console.info("rename succeed");
}).catch(function(err){
console.info("rename failed with error:"+ err);
......@@ -1573,7 +1470,8 @@ rename(oldPath: string, newPath: string, callback: AsyncCallback&lt;void&gt;): v
**示例：**
```js
fileio.rename(oldPath, newPath, function(err){
let newPath = path +"123";
fileio.rename(path, newPath, function(err){
});
```
......@@ -1594,7 +1492,8 @@ renameSync(oldPath: string, newPath: string): void
**示例：**
```js
fileio.renameSync(oldPath, newPath);
let newPath = path +"123";
fileio.renameSync(path, newPath);
```
......@@ -1618,6 +1517,7 @@ fsync(fd: number): Promise&lt;void&gt;
**示例：**
```js
let fd = fileio.openSync(path);
fileio.fsync(fd).then(function(){
console.info("sync data succeed");
}).catch(function(err){
......@@ -1642,6 +1542,7 @@ fsync(fd: number, callback: AsyncCallback&lt;void&gt;): void
**示例：**
```js
let fd = fileio.openSync(path);
fileio.fsync(fd, function(err){
// do something
});
......@@ -1663,6 +1564,7 @@ fsyncSync(fd: number): void
**示例：**
```js
let fd = fileio.openSync(path);
fileio.fyncsSync(fd);
```
......@@ -1687,6 +1589,7 @@ fdatasync(fd: number): Promise&lt;void&gt;
**示例：**
```js
let fd = fileio.openSync(path);
fileio.fdatasync(fd).then(function(err) {
console.info("sync data succeed");
}).catch(function(err){
......@@ -1711,6 +1614,7 @@ fdatasync(fd: number, callback:AsyncCallback&lt;void&gt;): void
**示例：**
```js
let fd = fileio.openSync(path);
fileio.fdatasync (fd, function (err) {
// do something
});
......@@ -1732,6 +1636,7 @@ fdatasyncSync(fd: number): void
**示例：**
```js
let fd = fileio.openSync(path);
let stat = fileio.fdatasyncSync(fd);
```
......@@ -1757,7 +1662,8 @@ symlink(target: string, srcPath: string): Promise&lt;void&gt;
**示例：**
```js
fileio.symlink(target, srcPath).then(function() {
let srcPath = "";
fileio.symlink(path, srcPath).then(function() {
console.info("symlink succeed");
}).catch(function(err){
console.info("symlink failed with error:"+ err);
......@@ -1782,7 +1688,8 @@ symlink(target: string, srcPath: string, callback: AsyncCallback&lt;void&gt;): v
**示例：**
```js
fileio.symlink(target, srcPath, function (err) {
let srcPath = "";
fileio.symlink(path, srcPath, function (err) {
// do something
});
```
......@@ -1804,7 +1711,8 @@ symlinkSync(target: string, srcPath: string): void
**示例：**
```js
fileio.symlinkSync(target, srcPath);
let srcPath = "";
fileio.symlinkSync(path, srcPath);
```
......@@ -1857,7 +1765,7 @@ chown(path: string, uid: number, gid: number, callback: AsyncCallback&lt;void&gt
**示例：**
```js
let stat = fileio.statSync(fpath)
let stat = fileio.statSync(path)
fileio.chown(path, stat.uid, stat.gid, function (err){
// do something
});
......@@ -1881,7 +1789,7 @@ chownSync(path: string, uid: number, gid: number): void
**示例：**
```js
let stat = fileio.statSync(fpath)
let stat = fileio.statSync(path)
fileio.chownSync(path, stat.uid, stat.gid);
```
......@@ -1981,6 +1889,8 @@ fchmod(fd: number, mode: number): Promise&lt;void&gt;
**示例：**
```js
let fd = fileio.openSync(path);
let mode = 0o400;
fileio.fchmod(fd, mode).then(function() {
console.info("chmod succeed");
}).catch(function(err){
......@@ -2006,6 +1916,8 @@ fchmod(fd: number, mode: number, callback: AsyncCallback&lt;void&gt;): void
**示例：**
```js
let fd = fileio.openSync(path);
let mode = 0o400;
fileio.fchmod(fd, mode, function (err) {
// do something
});
......@@ -2028,6 +1940,8 @@ fchmodSync(fd: number, mode: number): void
**示例：**
```js
let fd = fileio.openSync(path);
let mode = 0o400;
fileio.fchmodSync(fd, mode);
```
......@@ -2078,6 +1992,7 @@ createStream(path: string, mode: string, callback: AsyncCallback&lt;Stream&gt;):
**示例：**
```js
let mode = 0o400;
fileio.createStream(path, mode, function(err, stream){
// do something
});
......@@ -2130,6 +2045,8 @@ fdopenStream(fd: number, mode: string): Promise&lt;Stream&gt;
**示例：**
```js
let fd = fileio.openSync(path);
let mode = 0o400;
fileio.fdopenStream(fd, mode).then(function(stream){
console.info("openStream succeed");
}).catch(function(err){
......@@ -2155,6 +2072,8 @@ fdopenStream(fd: number, mode: string, callback: AsyncCallback&lt;Stream&gt;): v
**示例：**
```js
let fd = fileio.openSync(path);
let mode = 0o400;
fileio.fdopenStream(fd, mode, function (err, stream) {
// do something
});
......@@ -2182,6 +2101,7 @@ fdopenStreamSync(fd: number, mode: string): Stream
**示例：**
```js
let fd = fileio.openSync(path);
let ss = fileio.fdopenStreamSync(fd, "r+");
```
......@@ -2208,6 +2128,7 @@ fchown(fd: number, uid: number, gid: number): Promise&lt;void&gt;
**示例：**
```js
let fd = fileio.openSync(path);
let stat = fileio.statSync(path);
fileio.fchown(fd, stat.uid, stat.gid).then(function() {
console.info("chown succeed");
......@@ -2235,7 +2156,8 @@ fchown(fd: number, uid: number, gid: number, callback: AsyncCallback&lt;void&gt;
**示例：**
```js
let stat = fileio.statSync(fpath);
let fd = fileio.openSync(path);
let stat = fileio.statSync(path);
fileio.fchown(fd, stat.uid, stat.gid, function (err){
// do something
});
......@@ -2259,7 +2181,8 @@ fchownSync(fd: number, uid: number, gid: number): void
**示例：**
```js
let stat = fileio.statSync(fpath);
let fd = fileio.openSync(path);
let stat = fileio.statSync(path);
fileio.fchownSync(fd, stat.uid, stat.gid);
```
......@@ -2364,6 +2287,8 @@ createWatcher(filename: string, events: number, callback: AsyncCallback&lt;numbe
**示例：**
```js
let filename = path +"/test.txt";
let events = 1;
fileio.createWatcher(filename, events, function(watcher){
// do something
});
......@@ -2498,7 +2423,7 @@ isFile(): boolean
**示例：**
```js
let isFile = fileio.statSync(fpath).isFile();
let isFile = fileio.statSync(path).isFile();
```
......@@ -2600,7 +2525,7 @@ close(): Promise&lt;void&gt;
**示例：**
```js
let ss= fileio.createStreamSync(path);
let ss= fileio.createStreamSync(path,"r+");
ss.close().then(function(){
console.info("close fileStream succeed");
}).catch(function(err){
......@@ -2641,7 +2566,7 @@ closeSync(): void
**示例：**
```js
let ss= fileio.createStreamSync(path);
let ss= fileio.createStreamSync(path,"r+");
ss.closeSync();
```
......@@ -2661,7 +2586,7 @@ flush(): Promise&lt;void&gt;
**示例：**
```js
let ss= fileio.createStreamSync(path);
let ss= fileio.createStreamSync(path,"r+");
ss.flush().then(function (){
console.info("flush succeed");
}).catch(function(err){
......@@ -2685,7 +2610,7 @@ flush(callback: AsyncCallback&lt;void&gt;): void
**示例：**
```js
let ss= fileio.createStreamSync(path);
let ss= fileio.createStreamSync(path,"r+");
ss.flush(function (err) {
// do something
});
......@@ -2702,7 +2627,7 @@ flushSync(): void
**示例：**
```js
let ss= fileio.createStreamSync(path);
let ss= fileio.createStreamSync(path,"r+");
ss.flushSync();
```
......@@ -2733,7 +2658,7 @@ write(buffer: ArrayBuffer | string, options?: {
**示例：**
```js
let ss= fileio.createStreamSync(fpath, "r+");
let ss= fileio.createStreamSync(path, "r+");
ss.write("hello, world",{offset: 1,length: 5,position: 5,encoding :'utf-8'}).then(function (number){
console.info("write succeed and size is:"+ number);
}).catch(function(err){
......@@ -2764,7 +2689,7 @@ write(buffer: ArrayBuffer | string, options: {
**示例：**
```js
let ss= fileio.createStreamSync(fpath, "r+");
let ss= fileio.createStreamSync(path, "r+");
ss.write("hello, world", {offset: 1, length: 5, position: 5, encoding :'utf-8'}, function (err, bytesWritten) {
if (bytesWritten) {
// do something
......@@ -2800,7 +2725,7 @@ writeSync(buffer: ArrayBuffer | string, options?: {
**示例：**
```js
let ss= fileio.createStreamSync(fpath,"r+");
let ss= fileio.createStreamSync(path,"r+");
let num = ss.writeSync("hello, world", {offset: 1, length: 5, position: 5, encoding :'utf-8'});
```
......@@ -2830,10 +2755,10 @@ read(buffer: ArrayBuffer, options?: {
**示例：**
```js
let ss = fileio.createStreamSync(fpath, "r+");
let ss = fileio.createStreamSync(path, "r+");
ss.read(new ArrayBuffer(4096), {offset: 1, length: 5, position: 5}).then(function (readout){
console.info("read data succeed");
console.log(String.fromCharCode.apply(null, new Uint8Array(readOut.buffer)));
console.log(String.fromCharCode.apply(null, new Uint8Array(readout.buffer)));
}).catch(function(err){
console.info("read data failed with error:"+ err);
});
......@@ -2861,7 +2786,7 @@ read(buffer: ArrayBuffer, options: {
**示例：**
```js
let ss = fileio.createStreamSync(fpath, "r+");
let ss = fileio.createStreamSync(path, "r+");
ss.read(new ArrayBuffer(4096),{offset: 1, length: 5, position: 5},function (err, readOut) {
if (readOut) {
console.info("read data succeed");
......@@ -2898,7 +2823,7 @@ readSync(buffer: ArrayBuffer, options?: {
**示例：**
```js
let ss = fileio.createStreamSync(fpath, "r+");
let ss = fileio.createStreamSync(path, "r+");
let num = ss.readSync(new ArrayBuffer(4096), {offset: 1, length: 5, position: 5});
```
......@@ -2923,7 +2848,7 @@ read(): Promise&lt;Dirent&gt;
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
dir.read().then(function (dirent){
console.log("read succeed:"+JSON.stringify(dirent));
}).catch(function(err){
......@@ -2947,7 +2872,7 @@ read(callback: AsyncCallback&lt;Dirent&gt;): void
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
dir.read(function (err, dirent) {
if (dirent) {
// do something
......@@ -2972,45 +2897,11 @@ readSync(): Dirent
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
let dirent = dir.readSync();
```
### close
close(): Promise&lt;void&gt;
异步关闭目录，使用promise形式返回结果。目录被关闭后，Dir中持有的文件描述将被释放，后续将无法从Dir中读取目录项。
**系统能力**：SystemCapability.FileManagement.File.FileIO
**示例：**
```js
let dir = fileio.opendirSync(path);
dir.close().then(function(err){
console.info("close dir successfully");
});
```
### close
close(callback: AsyncCallback&lt;void&gt;): void
异步关闭目录，使用callback形式返回结果。目录被关闭后，Dir中持有的文件描述将被释放，后续将无法从Dir中读取目录项。
**系统能力**：SystemCapability.FileManagement.File.FileIO
**示例：**
```js
let dir = fileio.opendirSync(path);
dir.close(function(err){
console.info("close dir successfully");
});
```
### closeSync
closeSync(): void
......@@ -3021,7 +2912,7 @@ closeSync(): void
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
dir.closeSync();
```
......@@ -3054,7 +2945,7 @@ isBlockDevice(): boolean
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
let isBLockDevice = dir.readSync().isBlockDevice();
```
......@@ -3074,7 +2965,7 @@ isCharacterDevice(): boolean
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
let isCharacterDevice = dir.readSync().isCharacterDevice();
```
......@@ -3094,7 +2985,7 @@ isDirectory(): boolean
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
let isDirectory = dir.readSync().isDirectory();
```
......@@ -3114,7 +3005,7 @@ isFIFO(): boolean
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
let isFIFO = dir.readSync().isFIFO();
```
......@@ -3134,7 +3025,7 @@ isFile(): boolean
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
let isFile = dir.readSync().isFile();
```
......@@ -3154,7 +3045,7 @@ isSocket(): boolean
**示例：**
```js
let dir = fileio.opendirSync(dpath);
dir = fileio.opendirSync(path);
let isSocket = dir.readSync().isSocket();
```
......@@ -3174,6 +3065,6 @@ isSymbolicLink(): boolean
**示例：**
```js
let dir = fileio.opendirSync(path);
dir = fileio.opendirSync(path);
let isSymbolicLink = dir.readSync().isSymbolicLink();
```
zh-cn/application-dev/reference/apis/js-apis-filemanager.md
浏览文件 @ 6519ac1b
......@@ -111,7 +111,7 @@ listFile(path : string, type : string, options? : {dev? : DevInfo, offset? : num
```js
// 获取目录下所有文件
// 通过listFile、getRoot获取的文件uri
let media_path = file.path
let media_path = ""
filemanager.listFile(media_path, "file")
.then((fileInfo) => {
if(Array.isArray(fileInfo)) {
......@@ -120,6 +120,9 @@ listFile(path : string, type : string, options? : {dev? : DevInfo, offset? : num
}
}
}).catch((err) => {
console.log(err)
});
```
......@@ -152,7 +155,7 @@ listFile(path : string, type : string, options? : {dev? : DevInfo, offset? : num
```js
// 通过listFile、getRoot获取的文件path
let fileInfos = await filemanager.getRoot();
let fileInfos = filemanager.getRoot();
let media_path = "";
for (let i = 0; i < fileInfos.length; i++) {
if (fileInfos[i].name == "image_album") {
......@@ -197,7 +200,7 @@ createFile(path : string, filename : string, options? : {dev? : DevInfo}) : P
| 类型 | 说明 |
| --- | -- |
| Promise&lt;string&gt; | 文件uri |
| string | 文件uri |
- 异常
| 错误名称 | 错误类型 | 错误码 |说明 |
......@@ -211,7 +214,7 @@ createFile(path : string, filename : string, options? : {dev? : DevInfo}) : P
```js
// 创建文件，返回文件uri
let media_path = file.uri // 通过listFile、getRoot获取的文件uri
let media_path = "" // 通过listFile、getRoot获取的文件uri
let name = "xxx.jpg" // 待保存文件的后缀
filemanager.createFile(media_path, name).then((uri) => {
// 返回uri给应用
......@@ -252,13 +255,15 @@ createFile(path : string, filename: string, options? : {dev? : DevInfo}, callbac
```js
// 创建文件，返回文件uri
// 通过listFile、getRoot获取的文件uri
let media_path = file.path
let media_path = ""
// 待保存文件的后缀
let name = "xxx.jpg"
filemanager.createFile(media_path, name, (err, uri) => {
let dev = "";
filemanager.createFile(media_path, name, { DevInfo: dev }, function(err, uri) {
// 返回uri给应用
console.log("file uri:"+uri);
});
```
## FileInfo
......
zh-cn/application-dev/reference/apis/js-apis-securityLabel.md
浏览文件 @ 6519ac1b
......@@ -13,20 +13,12 @@ import securityLabel from '@ohos.securityLabel';
## 使用说明
使用该功能模块对文件/目录进行操作前，需要先获取其应用沙箱路径，获取方式及其接口用法请参考：[Context模块的接口getOrCreateLocalDir](js-apis-Context.md)。
“文件/目录应用沙箱路径”=“应用目录路径”+“文件/目录名”
通过上述接口获取到应用目录路径dir，文件名为“xxx.txt”，文件所在应用沙箱路径为：
```js
let path = dir + "/xxx.txt";
```
文件描述符fd：
使用该功能模块对文件/目录进行操作前，需要先获取其应用沙箱路径，获取方式及其接口用法请参考：
```js
let fd = fileio.openSync(path, 0o102, 0o666);
import featureAbility from '@ohos.ability.featureAbility';
let context = featureAbility.getContext();
let path = context.getFilesDir();
```
## securityLabel.setSecurityLabel
......@@ -53,6 +45,7 @@ setSecurityLabel(path:string, dataLevel:string):Promise&lt;void&gt;
**示例：**
```js
let dataLevel = "s4";
securityLabel.setSecurityLabel(path, dataLevel).then(function(){
console.info("setSecurityLabel successfully");
}).catch(function(error){
......@@ -79,6 +72,7 @@ setSecurityLabel(path:string, dataLevel:string, callback: AsyncCallback&lt;void&
**示例：**
```js
let dataLevel = "s4";
securityLabel.setSecurityLabel(path, dataLevel, function(error){
console.info("setSecurityLabel:" + JSON.stringify(error));
});
......@@ -101,6 +95,7 @@ setSecurityLabelSync(path:string, dataLevel:string):void
**示例：**
```js
let dataLevel = "s4";
securityLabel.setSecurityLabelSync(path, dataLevel);
```
......@@ -127,6 +122,7 @@ getSecurityLabel(path:string):Promise&lt;string&gt;
**示例：**
```js
let dataLevel = "s4";
securityLabel.getSecurityLabel(path).then(function(dataLevel){
console.log("getSecurityLabel successfully:" + dataLevel);
}).catch(function(error){
......@@ -152,7 +148,8 @@ getSecurityLabel(path:string, callback:AsyncCallback&lt;string&gt;): void
**示例：**
```js
securityLabel.getSecurityLabel(function(error, dataLevel){
let dataLevel = "s4";
securityLabel.getSecurityLabel(path,function(error, dataLevel){
console.log("getSecurityLabel successfully:" + dataLevel);
});
```
......
zh-cn/application-dev/reference/apis/js-apis-storage-statistics.md
浏览文件 @ 6519ac1b
......@@ -10,7 +10,7 @@
## 导入模块
```js
import storagestatistics from "@ohos.storageStatistics";
import storageStatistics from "@ohos.storageStatistics";
```
## storagestatistics.getTotalSizeOfVolume
......@@ -227,7 +227,7 @@ getCurrentBundleStats(): Promise<BundleStats>
- 示例
```js
let bundleStats = await storageStatistics.getCurrentBundleStats();
let bundleStats = storageStatistics.getCurrentBundleStats();
console.info("getCurrentBundleStats successfully:"+ JSON.stringify(bundleStats));
```
......@@ -292,7 +292,7 @@ getTotalSize(): Promise<number>
- 示例
```js
let number = await storageStatistics.getTotalSize();
let number = storageStatistics.getTotalSize();
console.info("getTotalSize successfully:"+ JSON.stringify(number));
```
......@@ -345,7 +345,7 @@ getFreeSize(): Promise<number>
- 示例
```js
let number = await storageStatistics.getFreeSize();
let number = storageStatistics.getFreeSize();
console.info("getFreeSize successfully:"+ JSON.stringify(number));
```
......@@ -493,6 +493,7 @@ getUserStorageStats(userId?: string, callback:AsyncCallback&lt;StorageStats&gt;)
- 示例
```js
let userId = "";
storagestatistics.getUserStorageStats(userId, function(error, StorageStats){
// do something
console.info("getUserStorageStats successfully:"+ JSON.stringify(StorageStats));
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或