AndroidのBluetooth接続に少し問題があります。Zebra MZ320 プリンターでの印刷に Bluetooth を使用しています。これまでのところ、どの携帯電話でも問題はありませんでした (Samsung Galaxy Mini、Samsung Galaxy Ace、Samsung Galaxy Nexus S、Samsung Galaxy S2、Samsung Galaxy Nexus S、Samsung Galaxy Note、HTC Desire Z、 HTC Desire S、HTC Desire、HTC Legend、HTC Flyer、Samsung Galaxy Tab)、しかし最近、印刷が機能しない Samsung Galaxy XCover を入手しました。
一日の研究の後、私はこのプログラムを作りました:
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button bTest = (Button)findViewById(R.id.button1);
bTest.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (new File("/sdcard/logDat.txt").exists()) {
new File("/sdcard/logDat.txt").delete();
}
Toast.makeText(TestPrinterActivity.this, "abcd1234", Toast.LENGTH_SHORT).show();
String macAddr = "00:22:58:07:BD:A5";
//sendCpclOverBluetooth(macAddr);
BluetoothSocket bSocket = null;
OutputStream outStream = null;
InputStream inStream = null;
try {
log("try... \tMAC address: "+macAddr);
BluetoothDevice device = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(macAddr);
Method m = device.getClass().getMethod("createRfcommSocket", new Class[] { Integer.TYPE });
//Method m = device.getClass().getMethod("createInsecureRfcommSocket", new Class[] { Integer.TYPE });
bSocket = (BluetoothSocket)m.invoke(device, new Object[] { Integer.valueOf(1) });
//bSocket = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(macAddr).createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
//bSocket = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(macAddr).createInsecureRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
log("\tconnect()");
bSocket.connect();
log("\tgetOutputStream");
outStream = bSocket.getOutputStream();
log("\tgetInputStream");
inStream = bSocket.getInputStream();
String cpclData = "! U1 SETLP ARI08ITA.CPF 0 20\r\n test123\r\n";
// Send the data to printer as a byte array.
log("\twriting: "+cpclData);
outStream.write(cpclData.getBytes());
log("\tflush");
outStream.flush();
Sleeper.sleep(1000);
log("\tfinish1");
} catch (Exception e) {
log("\t\tERROR: "+e.getMessage());
e.printStackTrace();
Toast.makeText(TestPrinterActivity.this, "ERROR: "+e.getMessage(), Toast.LENGTH_SHORT).show();
} finally {
try {
log("\tbSocket.close");
bSocket.close();
log("\toutStream.close");
outStream.close();
log("\tinStream.close");
inStream.close();
} catch (Exception e) {
log("\t\tERROR while closing: "+e.getMessage());
e.printStackTrace();
Toast.makeText(TestPrinterActivity.this, "ERROR while closing: "+e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
log("endTry");
}
});
}
private void log(String str) {
if (Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED ) == false)
return;
try {
BufferedWriter buffWr = new BufferedWriter(new FileWriter("/sdcard/logDat.txt", true));
buffWr.write(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + ": "+ str);
buffWr.newLine();
buffWr.close();
} catch(Exception e) {
Toast.makeText(TestPrinterActivity.this, "ERROR writing to log file: "+e, Toast.LENGTH_SHORT).show();
}
}
以下は正しい出力と間違った出力です。各出力には、2 つのシナリオ (プリンターがオンとオフの場合) が含まれます。
Samsung Galaxy XCover bluetooth では、オフラインの場合でも常にプリンターへの接続に成功しているようです...
何をすべきか/何をしようとしているのか、どんな提案も大歓迎です。
---------------------------------------------------------------------
When printer is turned on:
---------------------------------------------------------------------
2012-07-25 14:53:36: try... MAC address: 00:22:58:07:BD:A5
2012-07-25 14:53:36: connect()
2012-07-25 14:53:43: getOutputStream
2012-07-25 14:53:43: getInputStream
2012-07-25 14:53:43: writing: ! U1 SETLP ARI08ITA.CPF 0 20
test123
2012-07-25 14:53:43: flush
2012-07-25 14:53:44: finish1
2012-07-25 14:53:44: bSocket.close
2012-07-25 14:53:44: outStream.close
2012-07-25 14:53:44: inStream.close
2012-07-25 14:53:44: endTry
---------------------------------------------------------------------
When printer is off
---------------------------------------------------------------------
2012-07-25 14:53:07: try... MAC address: 00:22:58:07:BD:A5
2012-07-25 14:53:07: connect()
2012-07-25 14:53:12: ERROR: Host is down
2012-07-25 14:53:12: bSocket.close
2012-07-25 14:53:12: outStream.close
2012-07-25 14:53:12: ERROR while closing: null
2012-07-25 14:53:12: endTry
Output from Samsung Galaxy XCover (2.3.6):
---------------------------------------------------------------------
When printer is turned on:
---------------------------------------------------------------------
2012-07-25 15:00:48: try... MAC address: 00:22:58:07:BD:A5
2012-07-25 15:00:48: connect()
2012-07-25 15:00:48: getOutputStream
2012-07-25 15:00:48: getInputStream
2012-07-25 15:00:48: writing: ! U1 SETLP ARI08ITA.CPF 0 20
test123
2012-07-25 15:00:48: flush
2012-07-25 15:00:49: finish1
2012-07-25 15:00:49: bSocket.close
2012-07-25 15:00:49: outStream.close
2012-07-25 15:00:49: inStream.close
2012-07-25 15:00:49: endTry
---------------------------------------------------------------------
When printer is off
---------------------------------------------------------------------
2012-07-25 15:01:25: try... MAC address: 00:22:58:07:BD:A5
2012-07-25 15:01:25: connect()
2012-07-25 15:01:25: getOutputStream
2012-07-25 15:01:25: getInputStream
2012-07-25 15:01:25: writing: ! U1 SETLP ARI08ITA.CPF 0 20
test123
2012-07-25 15:01:25: flush
2012-07-25 15:01:26: finish1
2012-07-25 15:01:26: bSocket.close
2012-07-25 15:01:26: outStream.close
2012-07-25 15:01:26: inStream.close
2012-07-25 15:01:26: endTry