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Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>
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en/application-dev/reference/apis/js-apis-nfcTag.md
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# Standard NFC Tag
# NFC Tags
The **nfcTag** module provides methods for managing Near-Field Communication (NFC) tags.
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en/application-dev/reference/apis/js-apis-nfctech.md
浏览文件 @ 00f2168c
# Standard NFC Tag Technologies
# NFC Tag Technologies
The **nfctech** module provides methods for reading and writing tags that use different Near-Field Communication (NFC) technologies.
The **nfctech** module provides APIs for reading and writing tags that use different Near-Field Communication (NFC) technologies.
> **NOTE**
>
> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## **Modules to Import**
......@@ -14,7 +13,7 @@ import tag from '@ohos.nfc.tag';
## NfcATag
Provides access to NFC-A (ISO 14443-3A) properties and I/O operations. **NfcATag** inherits from **TagSession**.
Provides access to NFC-A (ISO 14443-3A) properties and I/O operations. This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -74,7 +73,7 @@ console.log("atqa:" +atqa);
## NfcBTag
Provides access to NFC-B (ISO 14443-3B) properties and I/O operations. **NfcBTag** inherits from **TagSession**.
Provides access to NFC-B (ISO 14443-3B) properties and I/O operations. This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -110,7 +109,7 @@ console.log("appData:" +appData);
getRespProtocol(): number[]
Obtains protocol information of this NFC-B tag.
Obtains the protocol information of this NFC-B tag.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -134,7 +133,7 @@ console.log("appData:" +protocol);
## NfcFTag
Provides access to NFC-F(JIS 6319-4) properties and I/O operations. **NfcFTag** inherits from **TagSession**.
Provides access to NFC-F (JIS 6319-4) properties and I/O operations. This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -144,7 +143,7 @@ The following describes the unique interfaces of **NfcFTag**.
getSystemCode(): number[]
Obtains the system code from the tag instance.
Obtains the system code from this NFC-F tag.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -170,7 +169,7 @@ console.log("systemCode:" +systemCode);
getPmm(): number[]
Obtains the PMm (consisting of the IC code and manufacturer parameters) information from the tag instance.
Obtains the PMm (consisting of the IC code and manufacturer parameters) information from this NFC-F tag.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -194,7 +193,7 @@ console.log("pmm:" +pmm);
## NfcVTag
Provides access to NFC-V (ISO 15693) properties and I/O operations. **NfcVTag** inherits from **TagSession**.
Provides access to NFC-V (ISO 15693) properties and I/O operations. This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -204,7 +203,7 @@ The following describes the unique interfaces of **NfcVTag**.
getResponseFlags(): number
Obtains the response flags from the tag instance.
Obtains the response flags from this NFC-V tag.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -230,7 +229,7 @@ console.log("flags:" +flags);
getDsfId(): number
Obtains the data storage format identifier (DSFID) from the tag instance.
Obtains the data storage format identifier (DSFID) from this NFC-V tag.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -254,7 +253,7 @@ console.log("dsfId:" +dsfId);
## IsoDepTag<sup>9+</sup>
Provides access to ISO-DEP (ISO 14443-4) properties and I/O operations. **IsoDepTag** inherits from **TagSession**.
Provides access to ISO-DEP (ISO 14443-4) properties and I/O operations. This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -343,7 +342,7 @@ tag.getIsoDepTag(taginfo).isExtendedApduSupported().then(function (has) {
isExtendedApduSupported(callback: AsyncCallback\<boolean>): void
Checks whether an extended application protocol data unit (APDU) is supported. This API uses an asynchronous callback to return the result.
Checks whether an extended APDU is supported. This API uses an asynchronous callback to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -367,7 +366,7 @@ tag.getIsoDepTag(taginfo).isExtendedApduSupported(function (error, has) {
## NdefTag<sup>9+</sup>
Provides access to the tags in the NFC Data Exchange Format (NDEF). **NdefTag** inherits from **TagSession**.
Provides access to the tags in the NFC Data Exchange Format (NDEF). This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -596,7 +595,7 @@ Reads the NDEF message from this tag. This API uses a promise to return the resu
| **Type**| **Description** |
| ------------------ | --------------------------|
| Promise\<[NdefMessage](#ndefmessage9)> | Promise used to return the message read.|
| Promise\<[NdefMessage](#ndefmessage9)> | Promise used to return the NDEF message read.|
**Example**
......@@ -641,7 +640,7 @@ tag.NdefTag(taginfo).readNdef(function (error, ndefMessage) {
writeNdef(msg: NdefMessage): Promise\<number>;
Write an NDEF message to this tag. This API uses a promise to return the result.
Writes an NDEF message to this tag. This API uses a promise to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -674,7 +673,7 @@ NdefTag.writeNdef(msg).then(function (netHandle) {
writeNdef(msg: NdefMessage, callback: AsyncCallback\<number>): void
Write an NDEF message to this tag. This API uses an asynchronous callback to return the result.
Writes an NDEF message to this tag. This API uses an asynchronous callback to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -728,7 +727,7 @@ tag.NdefTag(taginfo).canSetReadOnly().then(function (has) {
### NdefTag.canSetReadOnly<sup>9+</sup>
canSetReadOnly()(callback: AsyncCallback&lt;boolean&gt;): void;
canSetReadOnly(callback: AsyncCallback&lt;boolean&gt;): void;
Checks whether this NDEF tag can be set to read-only. This API uses an asynchronous callback to return the result.
......@@ -813,7 +812,7 @@ tag.NdefTag(taginfo).setReadOnly(function (error, errcode) {
getNdefTagTypeString(type: [NfcForumType](#nfcforumtype9)): string
Converts the NFC Forum Type to a byte array defined in the NFC Forum.
Converts an NFC Forum Type to a byte array defined in the NFC Forum.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -852,7 +851,7 @@ let ndefTypeString= tag.NdefTag(taginfo).getNdefTagTypeString(type);
## MifareClassicTag <sup>9+</sup>
Provides access to MIFARE Classic properties and I/O operations. **MifareClassicTag** inherits from **TagSession**.
Provides access to MIFARE Classic properties and I/O operations. This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -928,7 +927,7 @@ tag.MifareClassicTag(taginfo).authenticateSector(sectorIndex, key, function (err
readSingleBlock(blockIndex: number): Promise\<string>
Reads a block on the tag. The size of a block is 16 bytes. This API uses a promise to return the result.
Reads a block (16 bytes) on the tag. This API uses a promise to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -962,7 +961,7 @@ tag.MifareClassicTag(taginfo).readSingleBlock(blockIndex).then(function (data){
readSingleBlock(blockIndex: number, callback: AsyncCallback\<string>): void
Reads a block on the tag. The size of a block is 16 bytes. This API uses an asynchronous callback to return the result.
Reads a block (16 bytes) on the tag. This API uses an asynchronous callback to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -992,7 +991,7 @@ tag.MifareClassicTag(taginfo).readSingleBlock(blockIndex, function (error, data)
writeSingleBlock(blockIndex: number, data: string): Promise\<number>
Writes data to a block on the tag. The size of a block is 16 bytes. This API uses a promise to return the result.
Writes data to a block on the tag. This API uses a promise to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -1027,7 +1026,7 @@ tag.MifareClassicTag(taginfo).writeSingleBlock(blockIndex, data).then(function (
writeSingleBlock(blockIndex: number, data: string, callback: AsyncCallback\<number>): void
Writes data to a block on the tag. The size of a block is 16 bytes. This API uses an asynchronous callback to return the result.
Writes data to a block on the tag. This API uses an asynchronous callback to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -1427,10 +1426,10 @@ let size = tag.MifareClassicTag(taginfo).getTagSize();
| **Name**| **Value**| **Description**|
| -------- | -------- | -------- |
| MC_SIZE_MINI | 320 | Each tag has five sectors, and each sector has four blocks.|
| MC_SIZE_1K | 1024 | Each tag has 16 sectors, and each sector has four blocks.|
| MC_SIZE_2K | 2048 | Each tag has 32 sectors, and each sector has four blocks.|
| MC_SIZE_4K | 4096 | Each tag has 40 sectors, and each sector has four blocks.|
| MC_SIZE_MINI | 320 | Each tag has 5 sectors, and each sector has 4 blocks.|
| MC_SIZE_1K | 1024 | Each tag has 16 sectors, and each sector has 4 blocks.|
| MC_SIZE_2K | 2048 | Each tag has 32 sectors, and each sector has 4 blocks.|
| MC_SIZE_4K | 4096 | Each tag has 40 sectors, and each sector has 4 blocks.|
### MifareClassicTag.isEmulatedTag<sup>9+</sup>
......@@ -1521,7 +1520,7 @@ let index = tag.MifareClassicTag(taginfo).getSectorIndex(blockIndex);
## MifareUltralightTag<sup>9+</sup>
Provides access to MIFARE Ultralight properties and I/O operations. **MifareUltralightTag** inherits from **TagSession**.
Provides access to MIFARE Ultralight properties and I/O operations. This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -1531,7 +1530,7 @@ The following describes the unique interfaces of **MifareUltralightTag**.
readMultiplePages(pageIndex: number): Promise\<string>
Reads multiple pages. The size of each page is 4 bytes. This API uses a promise to return the result.
Reads multiple pages (4 bytes per page). This API uses a promise to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -1565,7 +1564,7 @@ tag.MifareUltralightTag(taginfo).readMultiplePages(pageIndex).then(function (dat
readMultiplePages(pageIndex: number, callback: AsyncCallback\<string>): void
Reads multiple pages. The size of each page is 4 bytes. This API uses an asynchronous callback to return the result.
Reads multiple pages (4 bytes per page). This API uses an asynchronous callback to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -1594,7 +1593,7 @@ tag.MifareUltralightTag(taginfo).readMultiplePages(pageIndex, function (error, d
writeSinglePages(pageIndex: number, data: string): Promise\<number>
Writes a page of data. The size of each page is 4 bytes. This API uses a promise to return the result.
Writes a page of data. This API uses a promise to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -1628,7 +1627,7 @@ tag.MifareUltralightTag(taginfo).writeSinglePages(pageIndex, data).then(function
writeSinglePages(pageIndex: number, data: string, callback: AsyncCallback\<number>): void
Writes a page of data. The size of each page is 4 bytes. This API uses an asynchronous callback to return the result.
Writes a page of data. This API uses an asynchronous callback to return the result.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -1658,7 +1657,7 @@ tag.MifareUltralightTag(taginfo).writeSinglePages(pageIndex, data, function (err
getType(): MifareUltralightType
Obtains the MIFARE Ultralight tag type, in bytes. For details, see [MifareUltralightType](#mifareultralighttype9).
Obtains the MIFARE Ultralight tag type, in bytes.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -1689,7 +1688,7 @@ let type = tag.MifareUltralightType(taginfo).getType();
## NdefFormatableTag<sup>9+</sup>
Provides methods for operating NDEF formattable tags. **NdefFormatableTag** inherits from **TagSession**.
Provides APIs for operating NDEF formattable tags. This class inherits from **TagSession**.
**TagSession** is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see [TagSession](js-apis-tagSession.md).
......@@ -1709,7 +1708,7 @@ Formats this tag as an NDEF tag, and writes an NDEF message to the tag. This API
| Name | Type | Mandatory| Description |
| -------- | ----------------------- | ---- | -------------------------------------- |
| message | [NdefMessage](#ndefmessage9) | Yes | NDEF message to write when the formatting is successful. If it is **null**, the tag is formatted only and no data will be written.|
| message | [NdefMessage](#ndefmessage9) | Yes | NDEF message to write when the formatting is successful. If this parameter is **null**, the tag is formatted only (no data will be written).|
**Return value**
......@@ -1742,8 +1741,8 @@ Formats this tag as an NDEF tag, and writes an NDEF message to the tag. This API
| Name | Type | Mandatory| Description |
| -------- | ----------------------- | ---- | -------------------------------------- |
| message | [NdefMessage](#ndefmessage9) | Yes | NDEF message to write when the formatting is successful. If it is **null**, the tag is formatted only and no data will be written.|
| callback: AsyncCallback\<number> | Callback invoked to return the result.|
| message | [NdefMessage](#ndefmessage9) | Yes | NDEF message to write when the formatting is successful. If this parameter is **null**, the tag is formatted only.|
| callback | AsyncCallback\<number> |Yes|Callback invoked to return the result.|
**Example**
......@@ -1771,7 +1770,7 @@ Formats this tag as an NDEF tag, writes an NDEF message to the NDEF tag, and the
| Name | Type | Mandatory| Description |
| -------- | ----------------------- | ---- | -------------------------------------- |
| message | [NdefMessage](#ndefmessage9) | Yes | NDEF message to write when the formatting is successful. If it is **null**, the tag is formatted only and no data will be written.|
| message | [NdefMessage](#ndefmessage9) | Yes | NDEF message to write when the formatting is successful. If this parameter is **null**, the tag is formatted only (no data will be written).|
**Return value**
......@@ -1804,8 +1803,8 @@ Formats this tag as an NDEF tag, writes an NDEF message to the NDEF tag, and the
| Name | Type | Mandatory| Description |
| -------- | ----------------------- | ---- | -------------------------------------- |
| message | [NdefMessage](#ndefmessage9) | Yes | NDEF message to write when the formatting is successful. If it is **null**, the tag is formatted only and no data will be written.|
| callback: AsyncCallback\<number> | Callback invoked to return the result.|
| message | [NdefMessage](#ndefmessage9) | Yes | NDEF message to write when the formatting is successful. If this parameter is **null**, the tag is formatted only.|
| callback | AsyncCallback\<number> |Yes|Callback invoked to return the result.|
**Example**
......
en/application-dev/reference/apis/js-apis-tagSession.md
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# Standard NFC Tag Session
# NFC Tag Session
The **tagSession** module provides common APIs for establishing connections and transferring data.
> **NOTE**
>
> **NOTE**<br>
> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## **Modules to Import**
......@@ -18,7 +17,7 @@ Provides common APIs for establishing connections and transferring data. **tagSe
A child class instance is required to access the following interfaces. You can use **get**XX**Tag()** to obtain a child class instance.
The specific method varies with the NFC tag technology in use. For details, see [nfcTag](js-apis-nfcTag.md).
The specific API varies with the NFC tag technology in use. For details, see [NFC Tags](js-apis-nfcTag.md).
### tagSession.connectTag
......@@ -26,7 +25,7 @@ connectTag(): boolean;
Connects to this tag.
Call this method to set up a connection before reading data from or writing data to a tag.
Call this API to set up a connection before reading data from or writing data to a tag.
**Required permissions**: ohos.permission.NFC_TAG
......@@ -95,7 +94,7 @@ Checks whether the tag is connected.
```js
import tag from '@ohos.nfc.tag';
// tagInfo is an Object given by nfc service when tag is dispatched.
// tagInfo is an object given by the NFC service when a tag is dispatched.
let isTagConnected = tag.getXXXTag(taginfo).isTagConnected();
console.log("isTagConnected:" +isTagConnected);
```
......
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