Java 类android.nfc.tech.TagTechnology 实例源码

public Tag mockTag(String technology) throws ClassNotFoundException, NoSuchFieldException, IllegalAccessException {
    // For future reference

    // Parameters :
    byte[] b = {0x8};
    String ndefClass = "android.nfc.tech.Ndef";

    // FieldName which marks the capacity of the tag
    String extraNdefMaxlength = (String) Class.forName(ndefClass).getField("EXTRA_NDEF_MAXLENGTH").get(null);

    // FieldName which marks the tags writability
    String cardWritableStateField = (String) Class.forName(ndefClass).getField("EXTRA_NDEF_CARDSTATE").get(null);

    // Field to mark tag R/W
    int cardWritable = Class.forName(ndefClass).getField("NDEF_MODE_READ_WRITE").getInt(null);

    Bundle techExtras = new Bundle();

    techExtras.putInt(extraNdefMaxlength, 2048);
    techExtras.putInt(cardWritableStateField, cardWritable);
    Bundle[] extras = {techExtras};
    int[] technologies = {TagTechnology.class.getField(technology.toUpperCase()).getInt(null)}; //https://android.googlesource.com/platform/frameworks/base.git/+/android-4.3_r2/core/java/android/nfc/tech/TagTechnology.java


    // https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/nfc/Tag.java :376
    Parcel parcel = Parcel.obtain();

    parcel.writeByteArray(b); //Sets the ID
    parcel.writeIntArray(technologies); // Sets the technology to NDEF
    parcel.writeArray(extras); // Needed to set properties for NDEF tag
    parcel.writeInt(1); // Service handle
    parcel.writeInt(1); // Indicating a mock

    return Tag.CREATOR.createFromParcel(parcel);
}

protected NfcTagHandler(TagTechnology tech, TagTechnologyHandler handler) {
    mTech = tech;
    mTechHandler = handler;
}

/**
 * Tegテクノロジを持っているか否かを検査します
 * @param tag NFCタグをセット
 * @param tech TagTechnologyクラスをセット
 * @return boolean 対象のテクノロジクラス含んでいる場合はtrueが戻ります
 */
static public boolean hasTech(Tag tag, Class< ? extends TagTechnology> tech) {
    return hasTech(tag, tech.getCanonicalName());
}