NFC MifareUltralight数据格式写入失败

Simmons_Song 2016-11-29 10:16:06

rt，写的代码如下

public static void writeTag(Tag tag) {

        MifareUltralight ultralight = MifareUltralight.get(tag);

        try {

            ultralight.connect();

            ultralight.writePage(4, "1".getBytes(Charset.forName("utf-8")));

//            ultralight.writePage(5, "efgh".getBytes(Charset.forName("US-ASCII")));

//            ultralight.writePage(6, "ijkl".getBytes(Charset.forName("US-ASCII")));

//            ultralight.writePage(7, "mnop".getBytes(Charset.forName("US-ASCII")));

            ultralight.close();

        } catch (IOException e) {

            Log.e("NFC WRITE ERROR", "IOException while closing MifareUltralight...", e);

        } finally {

            try {

                ultralight.close();

            } catch (IOException e) {

                Log.e("NFC WRITE ERROR", "IOException while closing MifareUltralight...", e);

            }

        }

    }

但是一执行就会产生如下异常：

WRITE ERROR: IOException while closing MifareUltralight...

                                                                    java.io.IOException: Transceive failed

                                                                        at android.nfc.TransceiveResult.getResponseOrThrow(TransceiveResult.java:52)

                                                                        at android.nfc.tech.BasicTagTechnology.transceive(BasicTagTechnology.java:151)

                                                                        at android.nfc.tech.MifareUltralight.writePage(MifareUltralight.java:193)

                                                                        at com.ssl.hitpatrol.utils.NfcMsgParser.writeTag(NfcMsgParser.java:171)

                                                                        at com.ssl.hitpatrol.activity.MainActivity$override.onNewIntent(MainActivity.java:59)

                                                                        at com.ssl.hitpatrol.activity.MainActivity$override.access$dispatch(MainActivity.java)

                                                                        at com.ssl.hitpatrol.activity.MainActivity.onNewIntent(MainActivity.java:0)

                                                                        at android.app.Instrumentation.callActivityOnNewIntent(Instrumentation.java:1218)

                                                                        at android.app.Instrumentation.callActivityOnNewIntent(Instrumentation.java:1230)

                                                                        at android.app.ActivityThread.deliverNewIntents(ActivityThread.java:2677)

                                                                        at android.app.ActivityThread.performNewIntents(ActivityThread.java:2689)

                                                                        at android.app.ActivityThread.handleNewIntent(ActivityThread.java:2698)

                                                                        at android.app.ActivityThread.access$1600(ActivityThread.java:178)

                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1542)

                                                                        at android.os.Handler.dispatchMessage(Handler.java:111)

                                                                        at android.os.Looper.loop(Looper.java:194)

                                                                        at android.app.ActivityThread.main(ActivityThread.java:5637)

                                                                        at java.lang.reflect.Method.invoke(Native Method)

                                                                        at java.lang.reflect.Method.invoke(Method.java:372)

                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:959)

                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:754)