Java Code Examples for android.nfc.Tag#hasTech()

/**
 * Get an instance of {@link MifareUltralight} for the given tag.
 * <p>Returns null if {@link MifareUltralight} was not enumerated in
 * {@link Tag#getTechList} - this indicates the tag is not MIFARE
 * Ultralight compatible, or that this Android
 * device does not implement MIFARE Ultralight.
 * <p>Does not cause any RF activity and does not block.
 *
 * @param tag an MIFARE Ultralight compatible tag
 * @return MIFARE Ultralight object
 */
public static MifareUltralight get(Tag tag) {
    if (!tag.hasTech(TagTechnology.MIFARE_ULTRALIGHT)) return null;
    try {
        return new MifareUltralight(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link NfcA} for the given tag.
 * <p>Returns null if {@link NfcA} was not enumerated in {@link Tag#getTechList}.
 * This indicates the tag does not support NFC-A.
 * <p>Does not cause any RF activity and does not block.
 *
 * @param tag an NFC-A compatible tag
 * @return NFC-A object
 */
public static NfcA get(Tag tag) {
    if (!tag.hasTech(TagTechnology.NFC_A)) return null;
    try {
        return new NfcA(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link NfcBarcode} for the given tag.
 *
 * <p>Returns null if {@link NfcBarcode} was not enumerated in {@link Tag#getTechList}.
 *
 * <p>Does not cause any RF activity and does not block.
 *
 * @param tag an NfcBarcode compatible tag
 * @return NfcBarcode object
 */
public static NfcBarcode get(Tag tag) {
    if (!tag.hasTech(TagTechnology.NFC_BARCODE)) return null;
    try {
        return new NfcBarcode(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link NfcB} for the given tag.
 * <p>Returns null if {@link NfcB} was not enumerated in {@link Tag#getTechList}.
 * This indicates the tag does not support NFC-B.
 * <p>Does not cause any RF activity and does not block.
 *
 * @param tag an NFC-B compatible tag
 * @return NFC-B object
 */
public static NfcB get(Tag tag) {
    if (!tag.hasTech(TagTechnology.NFC_B)) return null;
    try {
        return new NfcB(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link NdefFormatable} for the given tag.
 * <p>Does not cause any RF activity and does not block.
 * <p>Returns null if {@link NdefFormatable} was not enumerated in {@link Tag#getTechList}.
 * This indicates the tag is not NDEF formatable by this Android device.
 *
 * @param tag an NDEF formatable tag
 * @return NDEF formatable object
 */
public static NdefFormatable get(Tag tag) {
    if (!tag.hasTech(TagTechnology.NDEF_FORMATABLE)) return null;
    try {
        return new NdefFormatable(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link Ndef} for the given tag.
 *
 * <p>Returns null if {@link Ndef} was not enumerated in {@link Tag#getTechList}.
 * This indicates the tag is not NDEF formatted, or that this tag
 * is NDEF formatted but under a vendor specification that this Android
 * device does not implement.
 *
 * <p>Does not cause any RF activity and does not block.
 *
 * @param tag an NDEF compatible tag
 * @return Ndef object
 */
public static Ndef get(Tag tag) {
    if (!tag.hasTech(TagTechnology.NDEF)) return null;
    try {
        return new Ndef(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link NfcV} for the given tag.
 * <p>Returns null if {@link NfcV} was not enumerated in {@link Tag#getTechList}.
 * This indicates the tag does not support NFC-V.
 * <p>Does not cause any RF activity and does not block.
 *
 * @param tag an NFC-V compatible tag
 * @return NFC-V object
 */
public static NfcV get(Tag tag) {
    if (!tag.hasTech(TagTechnology.NFC_V)) return null;
    try {
        return new NfcV(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link MifareClassic} for the given tag.
 * <p>Does not cause any RF activity and does not block.
 * <p>Returns null if {@link MifareClassic} was not enumerated in {@link Tag#getTechList}.
 * This indicates the tag is not MIFARE Classic compatible, or this Android
 * device does not support MIFARE Classic.
 *
 * @param tag an MIFARE Classic compatible tag
 * @return MIFARE Classic object
 */
public static MifareClassic get(Tag tag) {
    if (!tag.hasTech(TagTechnology.MIFARE_CLASSIC)) return null;
    try {
        return new MifareClassic(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link IsoDep} for the given tag.
 * <p>Does not cause any RF activity and does not block.
 * <p>Returns null if {@link IsoDep} was not enumerated in {@link Tag#getTechList}.
 * This indicates the tag does not support ISO-DEP.
 *
 * @param tag an ISO-DEP compatible tag
 * @return ISO-DEP object
 */
public static IsoDep get(Tag tag) {
    if (!tag.hasTech(TagTechnology.ISO_DEP)) return null;
    try {
        return new IsoDep(tag);
    } catch (RemoteException e) {
        return null;
    }
}
 

/**
 * Get an instance of {@link NfcF} for the given tag.
 * <p>Returns null if {@link NfcF} was not enumerated in {@link Tag#getTechList}.
 * This indicates the tag does not support NFC-F.
 * <p>Does not cause any RF activity and does not block.
 *
 * @param tag an NFC-F compatible tag
 * @return NFC-F object
 */
public static NfcF get(Tag tag) {
    if (!tag.hasTech(TagTechnology.NFC_F)) return null;
    try {
        return new NfcF(tag);
    } catch (RemoteException e) {
        return null;
    }
}