Java tutorial
/* * Android USB Serial Monitor Lite * * Copyright (C) 2012 Keisuke SUZUKI * Licensed under the Apache License, Version 2.0 * http://www.apache.org/licenses/LICENSE-2.0 * * thanks to Arun. */ package jp.ksksue.app.terminal; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.util.ArrayList; import java.util.concurrent.Executors; import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.TimeUnit; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.SharedPreferences; import android.graphics.Typeface; import android.hardware.usb.UsbManager; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.preference.PreferenceManager; import android.util.Log; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnKeyListener; import android.widget.Button; import android.widget.EditText; import android.widget.ScrollView; import android.widget.TextView; import android.widget.Toast; import com.physicaloid.lib.Physicaloid; import com.physicaloid.lib.usb.driver.uart.UartConfig; import com.scorchworks.demo.SimpleFileDialog; public class AndroidUSBSerialMonitorLite extends Activity { //--------------------------------------------------------------------------------- // my extension //--------------------------------------------------------------------------------- private ScheduledExecutorService irBeaconExecutor; private Runnable timerRunnable = new Runnable() { @Override public void run() { writeIrJSON(); } }; private void writeToSerial(String text) { String str = changeEscapeSequence(text); mSerial.write(str.getBytes(), str.length()); // Log.d("DEBUG", str); } private void writeIrJSON() { if (mFirstPlay) { writeToSerial(String.format("n,%d", mData.size())); writeToSerial(String.format("k,%d", mPostScale)); for (int i = 0; i < mData.size(); ++i) { int d = mData.get(i); int bank = i / 64; int pos = i % 64; if (pos == 0) { writeToSerial(String.format("b,%d", bank)); } writeToSerial(String.format("w,%d,%d", pos, d)); } mFirstPlay = false; } writeToSerial("p"); } private void startIrBeaconPulse() { irBeaconExecutor = Executors.newSingleThreadScheduledExecutor(); irBeaconExecutor.scheduleAtFixedRate(timerRunnable, 0, mPlayIntervalSeconds, TimeUnit.SECONDS); btnStop.setEnabled(true); btnPlay.setEnabled(false); } private void stopIrBeaconPulse() { if (irBeaconExecutor != null) { irBeaconExecutor.shutdown(); } irBeaconExecutor = null; btnStop.setEnabled(false); btnPlay.setEnabled(true); } private void parseJSON(String text) { try { JSONObject jsonObject = new JSONObject(text); mPostScale = jsonObject.getInt("postscale"); mFreq = jsonObject.getInt("freq"); JSONArray dataJsonArray = jsonObject.getJSONArray("data"); mData = new ArrayList<Integer>(); mFormat = jsonObject.getString("format"); for (int i = 0; i < dataJsonArray.length(); ++i) { mData.add(dataJsonArray.getInt(i)); } stopIrBeaconPulse(); mFirstPlay = true; } catch (JSONException e) { e.printStackTrace(); } } private int mPlayIntervalSeconds = 3; private int mPostScale = 0; private int mFreq = 0; private ArrayList<Integer> mData = null; private String mFormat = ""; private boolean mFirstPlay = true; private Button btnLoad; private Button btnPlay; private Button btnStop; //--------------------------------------------------------------------------------- // //--------------------------------------------------------------------------------- static final int PREFERENCE_REV_NUM = 1; // debug settings private static final boolean SHOW_DEBUG = false; private static final boolean USE_WRITE_BUTTON_FOR_DEBUG = false; public static final boolean isICSorHigher = (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB_MR2); // occurs USB packet loss if TEXT_MAX_SIZE is over 6000 private static final int TEXT_MAX_SIZE = 8192; private static final int MENU_ID_SETTING = 0; private static final int MENU_ID_CLEARTEXT = 1; private static final int MENU_ID_SENDTOEMAIL = 2; private static final int MENU_ID_OPENDEVICE = 3; private static final int MENU_ID_CLOSEDEVICE = 4; private static final int MENU_ID_WORDLIST = 5; private static final int REQUEST_PREFERENCE = 0; private static final int REQUEST_WORD_LIST_ACTIVITY = 1; // Defines of Display Settings private static final int DISP_CHAR = 0; private static final int DISP_DEC = 1; private static final int DISP_HEX = 2; // Linefeed Code Settings private static final int LINEFEED_CODE_CR = 0; private static final int LINEFEED_CODE_CRLF = 1; private static final int LINEFEED_CODE_LF = 2; // Load Bundle Key (for view switching) private static final String BUNDLEKEY_LOADTEXTVIEW = "bundlekey.LoadTextView"; Physicaloid mSerial; private ScrollView mSvText; private TextView mTvSerial; private StringBuilder mText = new StringBuilder(); private boolean mStop = false; String TAG = "AndroidSerialTerminal"; Handler mHandler = new Handler(); private Button btWrite; private EditText etWrite; // Default settings private int mTextFontSize = 12; private Typeface mTextTypeface = Typeface.MONOSPACE; private int mDisplayType = DISP_CHAR; private int mReadLinefeedCode = LINEFEED_CODE_LF; private int mWriteLinefeedCode = LINEFEED_CODE_LF; private int mBaudrate = 9600; private int mDataBits = UartConfig.DATA_BITS8; private int mParity = UartConfig.PARITY_NONE; private int mStopBits = UartConfig.STOP_BITS1; private int mFlowControl = UartConfig.FLOW_CONTROL_OFF; private String mEmailAddress = "@gmail.com"; private boolean mRunningMainLoop = false; private static final String ACTION_USB_PERMISSION = "jp.ksksue.app.terminal.USB_PERMISSION"; // Linefeed private final static String BR = System.getProperty("line.separator"); /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); /* FIXME : How to check that there is a title bar menu or not. // Should not set a Window.FEATURE_NO_TITLE on Honeycomb because a user cannot see menu button. if(isICSorHigher) { if(!getWindow().hasFeature(Window.FEATURE_ACTION_BAR)) { requestWindowFeature(Window.FEATURE_NO_TITLE); } } */ setContentView(R.layout.main); mSvText = (ScrollView) findViewById(R.id.svText); mTvSerial = (TextView) findViewById(R.id.tvSerial); btWrite = (Button) findViewById(R.id.btWrite); btWrite.setEnabled(false); etWrite = (EditText) findViewById(R.id.etWrite); etWrite.setEnabled(false); etWrite.setHint("CR : \\r, LF : \\n, bin : \\u0000"); if (SHOW_DEBUG) { Log.d(TAG, "New FTDriver"); } // get service mSerial = new Physicaloid(this); if (SHOW_DEBUG) { Log.d(TAG, "New instance : " + mSerial); } // listen for new devices IntentFilter filter = new IntentFilter(); filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED); filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED); registerReceiver(mUsbReceiver, filter); if (SHOW_DEBUG) { Log.d(TAG, "FTDriver beginning"); } openUsbSerial(); etWrite.setOnKeyListener(new OnKeyListener() { @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if (event.getAction() == KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_ENTER) { writeDataToSerial(); return true; } return false; } }); // --------------------------------------------------------------------------------------- // Write Button // --------------------------------------------------------------------------------------- if (!USE_WRITE_BUTTON_FOR_DEBUG) { btWrite.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { writeDataToSerial(); } }); } else { // Write test button for debug btWrite.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String strWrite = ""; for (int i = 0; i < 3000; ++i) { strWrite = strWrite + " " + Integer.toString(i); } if (SHOW_DEBUG) { Log.d(TAG, "FTDriver Write(" + strWrite.length() + ") : " + strWrite); } mSerial.write(strWrite.getBytes(), strWrite.length()); } }); } // end of if(SHOW_WRITE_TEST_BUTTON) btnLoad = (Button) findViewById(R.id.btnLoad); btnLoad.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { SimpleFileDialog simpleFileDialog = new SimpleFileDialog(AndroidUSBSerialMonitorLite.this, "FileOpen", new SimpleFileDialog.SimpleFileDialogListener() { @Override public void onChosenDir(String chosenDir) { File file = null; FileInputStream fileInputStream = null; byte[] data; try { file = new File(chosenDir); if (file.isDirectory()) { throw new IOException("not file"); } fileInputStream = new FileInputStream(file); data = new byte[(int) file.length()]; fileInputStream.read(data); String dataText = new String(data, "UTF-8"); parseJSON(dataText); } catch (IOException e) { Toast.makeText(AndroidUSBSerialMonitorLite.this, e.getMessage(), Toast.LENGTH_SHORT).show(); } finally { if (fileInputStream != null) { try { fileInputStream.close(); } catch (IOException e) { e.printStackTrace(); } } } } }); simpleFileDialog.chooseFile_or_Dir(); } }); btnPlay = (Button) findViewById(R.id.btnPlay); btnPlay.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { startIrBeaconPulse(); } }); btnStop = (Button) findViewById(R.id.btnStop); btnStop.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { stopIrBeaconPulse(); } }); btnPlay.setEnabled(false); btnStop.setEnabled(false); } private void writeDataToSerial() { String strWrite = etWrite.getText().toString(); strWrite = changeEscapeSequence(strWrite); if (SHOW_DEBUG) { Log.d(TAG, "FTDriver Write(" + strWrite.length() + ") : " + strWrite); } mSerial.write(strWrite.getBytes(), strWrite.length()); } private String changeEscapeSequence(String in) { String out = new String(); try { out = unescapeJava(in); } catch (IOException e) { return ""; } switch (mWriteLinefeedCode) { case LINEFEED_CODE_CR: out = out + "\r"; break; case LINEFEED_CODE_CRLF: out = out + "\r\n"; break; case LINEFEED_CODE_LF: out = out + "\n"; break; default: } return out; } public void setWriteTextString(String str) { etWrite.setText(str); } // --------------------------------------------------------------------------------------- // Menu Button // --------------------------------------------------------------------------------------- @Override public boolean onCreateOptionsMenu(Menu menu) { menu.add(Menu.NONE, MENU_ID_OPENDEVICE, Menu.NONE, "Open Device"); menu.add(Menu.NONE, MENU_ID_WORDLIST, Menu.NONE, "Word List ..."); menu.add(Menu.NONE, MENU_ID_SETTING, Menu.NONE, "Setting ..."); menu.add(Menu.NONE, MENU_ID_CLEARTEXT, Menu.NONE, "Clear Text"); menu.add(Menu.NONE, MENU_ID_SENDTOEMAIL, Menu.NONE, "Email to ..."); menu.add(Menu.NONE, MENU_ID_CLOSEDEVICE, Menu.NONE, "Close Device"); /* if(mSerial!=null) { if(mSerial.isConnected()) { menu.getItem(MENU_ID_OPENDEVICE).setEnabled(false); } else { menu.getItem(MENU_ID_CLOSEDEVICE).setEnabled(false); } } */ return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case MENU_ID_OPENDEVICE: openUsbSerial(); return true; case MENU_ID_WORDLIST: Intent intent = new Intent(this, WordListActivity.class); startActivityForResult(intent, REQUEST_WORD_LIST_ACTIVITY); return true; case MENU_ID_SETTING: startActivityForResult(new Intent().setClassName(this.getPackageName(), AndroidUSBSerialMonitorLitePrefActivity.class.getName()), REQUEST_PREFERENCE); return true; case MENU_ID_CLEARTEXT: mTvSerial.setText(""); mText.setLength(0); return true; case MENU_ID_SENDTOEMAIL: sendTextToEmail(); return true; case MENU_ID_CLOSEDEVICE: closeUsbSerial(); return true; default: return false; } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == REQUEST_WORD_LIST_ACTIVITY) { if (resultCode == RESULT_OK) { try { String strWord = data.getStringExtra("word"); etWrite.setText(strWord); // Set a cursor position last etWrite.setSelection(etWrite.getText().length()); } catch (Exception e) { Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show(); } } } else if (requestCode == REQUEST_PREFERENCE) { SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this); String res = pref.getString("display_list", Integer.toString(DISP_CHAR)); mDisplayType = Integer.valueOf(res); res = pref.getString("fontsize_list", Integer.toString(12)); mTextFontSize = Integer.valueOf(res); mTvSerial.setTextSize(mTextFontSize); res = pref.getString("typeface_list", Integer.toString(3)); switch (Integer.valueOf(res)) { case 0: mTextTypeface = Typeface.DEFAULT; break; case 1: mTextTypeface = Typeface.SANS_SERIF; break; case 2: mTextTypeface = Typeface.SERIF; break; case 3: mTextTypeface = Typeface.MONOSPACE; break; } mTvSerial.setTypeface(mTextTypeface); etWrite.setTypeface(mTextTypeface); res = pref.getString("readlinefeedcode_list", Integer.toString(LINEFEED_CODE_CRLF)); mReadLinefeedCode = Integer.valueOf(res); res = pref.getString("writelinefeedcode_list", Integer.toString(LINEFEED_CODE_CRLF)); mWriteLinefeedCode = Integer.valueOf(res); res = pref.getString("email_edittext", "@gmail.com"); mEmailAddress = res; int intRes; res = pref.getString("baudrate_list", Integer.toString(9600)); intRes = Integer.valueOf(res); if (mBaudrate != intRes) { mBaudrate = intRes; mSerial.setBaudrate(mBaudrate); } res = pref.getString("databits_list", Integer.toString(UartConfig.DATA_BITS8)); intRes = Integer.valueOf(res); if (mDataBits != intRes) { mDataBits = Integer.valueOf(res); mSerial.setDataBits(mDataBits); } res = pref.getString("parity_list", Integer.toString(UartConfig.PARITY_NONE)); intRes = Integer.valueOf(res); if (mParity != intRes) { mParity = intRes; mSerial.setParity(mParity); } res = pref.getString("stopbits_list", Integer.toString(UartConfig.STOP_BITS1)); intRes = Integer.valueOf(res); if (mStopBits != intRes) { mStopBits = intRes; mSerial.setStopBits(mStopBits); } res = pref.getString("flowcontrol_list", Integer.toString(UartConfig.FLOW_CONTROL_OFF)); intRes = Integer.valueOf(res); if (mFlowControl != intRes) { mFlowControl = intRes; if (mFlowControl == UartConfig.FLOW_CONTROL_ON) { mSerial.setDtrRts(true, true); } else { mSerial.setDtrRts(false, false); } } /* res = pref.getString("break_list", Integer.toString(FTDriver.FTDI_SET_NOBREAK)); intRes = Integer.valueOf(res) << 14; if (mBreak != intRes) { mBreak = intRes; mSerial.setSerialPropertyBreak(mBreak, FTDriver.CH_A); mSerial.setSerialPropertyToChip(FTDriver.CH_A); } */ res = pref.getString("play_interval", "3"); intRes = Integer.valueOf(res); mPlayIntervalSeconds = intRes; } } // --------------------------------------------------------------------------------------- // End of Menu button // --------------------------------------------------------------------------------------- /** * Saves values for view switching */ @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putString(BUNDLEKEY_LOADTEXTVIEW, mTvSerial.getText().toString()); } /** * Loads values for view switching */ @Override protected void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); mTvSerial.setText(savedInstanceState.getString(BUNDLEKEY_LOADTEXTVIEW)); } @Override public void onDestroy() { mSerial.close(); mStop = true; unregisterReceiver(mUsbReceiver); super.onDestroy(); } private void mainloop() { mStop = false; mRunningMainLoop = true; btWrite.setEnabled(true); etWrite.setEnabled(true); Toast.makeText(this, "connected", Toast.LENGTH_SHORT).show(); if (SHOW_DEBUG) { Log.d(TAG, "start mainloop"); } new Thread(mLoop).start(); } private Runnable mLoop = new Runnable() { @Override public void run() { int len; byte[] rbuf = new byte[4096]; for (;;) {// this is the main loop for transferring // //////////////////////////////////////////////////////// // Read and Display to Terminal // //////////////////////////////////////////////////////// len = mSerial.read(rbuf); rbuf[len] = 0; if (len > 0) { if (SHOW_DEBUG) { Log.d(TAG, "Read Length : " + len); } switch (mDisplayType) { case DISP_CHAR: setSerialDataToTextView(mDisplayType, rbuf, len, "", ""); break; case DISP_DEC: setSerialDataToTextView(mDisplayType, rbuf, len, "013", "010"); break; case DISP_HEX: setSerialDataToTextView(mDisplayType, rbuf, len, "0d", "0a"); break; } mHandler.post(new Runnable() { public void run() { if (mTvSerial.length() > TEXT_MAX_SIZE) { StringBuilder sb = new StringBuilder(); sb.append(mTvSerial.getText()); sb.delete(0, TEXT_MAX_SIZE / 2); mTvSerial.setText(sb); } mTvSerial.append(mText); mText.setLength(0); mSvText.fullScroll(ScrollView.FOCUS_DOWN); } }); } try { Thread.sleep(50); } catch (InterruptedException e) { e.printStackTrace(); } if (mStop) { mRunningMainLoop = false; return; } } } }; private String IntToHex2(int Value) { char HEX2[] = { Character.forDigit((Value >> 4) & 0x0F, 16), Character.forDigit(Value & 0x0F, 16) }; String Hex2Str = new String(HEX2); return Hex2Str; } boolean lastDataIs0x0D = false; void setSerialDataToTextView(int disp, byte[] rbuf, int len, String sCr, String sLf) { int tmpbuf; for (int i = 0; i < len; ++i) { if (SHOW_DEBUG) { Log.d(TAG, "Read Data[" + i + "] : " + rbuf[i]); } // "\r":CR(0x0D) "\n":LF(0x0A) if ((mReadLinefeedCode == LINEFEED_CODE_CR) && (rbuf[i] == 0x0D)) { mText.append(sCr); mText.append(BR); } else if ((mReadLinefeedCode == LINEFEED_CODE_LF) && (rbuf[i] == 0x0A)) { mText.append(sLf); mText.append(BR); } else if ((mReadLinefeedCode == LINEFEED_CODE_CRLF) && (rbuf[i] == 0x0D) && (rbuf[i + 1] == 0x0A)) { mText.append(sCr); if (disp != DISP_CHAR) { mText.append(" "); } mText.append(sLf); mText.append(BR); ++i; } else if ((mReadLinefeedCode == LINEFEED_CODE_CRLF) && (rbuf[i] == 0x0D)) { // case of rbuf[last] == 0x0D and rbuf[0] == 0x0A mText.append(sCr); lastDataIs0x0D = true; } else if (lastDataIs0x0D && (rbuf[0] == 0x0A)) { if (disp != DISP_CHAR) { mText.append(" "); } mText.append(sLf); mText.append(BR); lastDataIs0x0D = false; } else if (lastDataIs0x0D && (i != 0)) { // only disable flag lastDataIs0x0D = false; --i; } else { switch (disp) { case DISP_CHAR: mText.append((char) rbuf[i]); break; case DISP_DEC: tmpbuf = rbuf[i]; if (tmpbuf < 0) { tmpbuf += 256; } mText.append(String.format("%1$03d", tmpbuf)); mText.append(" "); break; case DISP_HEX: mText.append(IntToHex2((int) rbuf[i])); mText.append(" "); break; default: break; } } } } void loadDefaultSettingValues() { SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this); String res = pref.getString("display_list", Integer.toString(DISP_CHAR)); mDisplayType = Integer.valueOf(res); res = pref.getString("fontsize_list", Integer.toString(12)); mTextFontSize = Integer.valueOf(res); res = pref.getString("typeface_list", Integer.toString(3)); switch (Integer.valueOf(res)) { case 0: mTextTypeface = Typeface.DEFAULT; break; case 1: mTextTypeface = Typeface.SANS_SERIF; break; case 2: mTextTypeface = Typeface.SERIF; break; case 3: mTextTypeface = Typeface.MONOSPACE; break; } mTvSerial.setTypeface(mTextTypeface); etWrite.setTypeface(mTextTypeface); res = pref.getString("readlinefeedcode_list", Integer.toString(LINEFEED_CODE_CRLF)); mReadLinefeedCode = Integer.valueOf(res); res = pref.getString("writelinefeedcode_list", Integer.toString(LINEFEED_CODE_CRLF)); mWriteLinefeedCode = Integer.valueOf(res); res = pref.getString("email_edittext", "@gmail.com"); mEmailAddress = res; res = pref.getString("baudrate_list", Integer.toString(9600)); mBaudrate = Integer.valueOf(res); res = pref.getString("databits_list", Integer.toString(UartConfig.DATA_BITS8)); mDataBits = Integer.valueOf(res); res = pref.getString("parity_list", Integer.toString(UartConfig.PARITY_NONE)); mParity = Integer.valueOf(res); res = pref.getString("stopbits_list", Integer.toString(UartConfig.STOP_BITS1)); mStopBits = Integer.valueOf(res); res = pref.getString("flowcontrol_list", Integer.toString(UartConfig.FLOW_CONTROL_OFF)); mFlowControl = Integer.valueOf(res); res = pref.getString("play_interval", "3"); mPlayIntervalSeconds = Integer.valueOf(res); } private void sendTextToEmail() { Intent intent = new Intent(Intent.ACTION_SENDTO, Uri.parse("mailto:" + mEmailAddress)); intent.putExtra("subject", "Result of " + getString(R.string.app_name)); intent.putExtra("body", mTvSerial.getText().toString().trim()); startActivity(intent); } // Load default baud rate int loadDefaultBaudrate() { SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this); String res = pref.getString("baudrate_list", Integer.toString(9600)); return Integer.valueOf(res); } private void openUsbSerial() { if (mSerial == null) { Toast.makeText(this, "cannot open", Toast.LENGTH_SHORT).show(); return; } if (!mSerial.isOpened()) { if (SHOW_DEBUG) { Log.d(TAG, "onNewIntent begin"); } if (!mSerial.open()) { Toast.makeText(this, "cannot open", Toast.LENGTH_SHORT).show(); return; } else { loadDefaultSettingValues(); boolean dtrOn = false; boolean rtsOn = false; if (mFlowControl == UartConfig.FLOW_CONTROL_ON) { dtrOn = true; rtsOn = true; } mSerial.setConfig(new UartConfig(mBaudrate, mDataBits, mStopBits, mParity, dtrOn, rtsOn)); if (SHOW_DEBUG) { Log.d(TAG, "setConfig : baud : " + mBaudrate + ", DataBits : " + mDataBits + ", StopBits : " + mStopBits + ", Parity : " + mParity + ", dtr : " + dtrOn + ", rts : " + rtsOn); } mTvSerial.setTextSize(mTextFontSize); Toast.makeText(this, "connected", Toast.LENGTH_SHORT).show(); } } if (!mRunningMainLoop) { mainloop(); } } private void closeUsbSerial() { detachedUi(); mStop = true; mSerial.close(); } protected void onNewIntent(Intent intent) { if (SHOW_DEBUG) { Log.d(TAG, "onNewIntent"); } openUsbSerial(); }; private void detachedUi() { btWrite.setEnabled(false); etWrite.setEnabled(false); Toast.makeText(this, "disconnect", Toast.LENGTH_SHORT).show(); } // BroadcastReceiver when insert/remove the device USB plug into/from a USB // port BroadcastReceiver mUsbReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(action)) { if (SHOW_DEBUG) { Log.d(TAG, "Device attached"); } if (!mSerial.isOpened()) { if (SHOW_DEBUG) { Log.d(TAG, "Device attached begin"); } openUsbSerial(); } if (!mRunningMainLoop) { if (SHOW_DEBUG) { Log.d(TAG, "Device attached mainloop"); } mainloop(); } } else if (UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)) { if (SHOW_DEBUG) { Log.d(TAG, "Device detached"); } mStop = true; detachedUi(); // mSerial.usbDetached(intent); mSerial.close(); } else if (ACTION_USB_PERMISSION.equals(action)) { if (SHOW_DEBUG) { Log.d(TAG, "Request permission"); } synchronized (this) { if (!mSerial.isOpened()) { if (SHOW_DEBUG) { Log.d(TAG, "Request permission begin"); } openUsbSerial(); } } if (!mRunningMainLoop) { if (SHOW_DEBUG) { Log.d(TAG, "Request permission mainloop"); } mainloop(); } } } }; /** * <p>Unescapes any Java literals found in the <code>String</code> to a * <code>Writer</code>.</p> * * <p>For example, it will turn a sequence of <code>'\'</code> and * <code>'n'</code> into a newline character, unless the <code>'\'</code> * is preceded by another <code>'\'</code>.</p> * * <p>A <code>null</code> string input has no effect.</p> * * @param out the <code>String</code> used to output unescaped characters * @param str the <code>String</code> to unescape, may be null * @throws IllegalArgumentException if the Writer is <code>null</code> * @throws IOException if error occurs on underlying Writer */ private String unescapeJava(String str) throws IOException { if (str == null) { return ""; } int sz = str.length(); StringBuffer unicode = new StringBuffer(4); StringBuilder strout = new StringBuilder(); boolean hadSlash = false; boolean inUnicode = false; for (int i = 0; i < sz; i++) { char ch = str.charAt(i); if (inUnicode) { // if in unicode, then we're reading unicode // values in somehow unicode.append(ch); if (unicode.length() == 4) { // unicode now contains the four hex digits // which represents our unicode character try { int value = Integer.parseInt(unicode.toString(), 16); strout.append((char) value); unicode.setLength(0); inUnicode = false; hadSlash = false; } catch (NumberFormatException nfe) { // throw new NestableRuntimeException("Unable to parse unicode value: " + unicode, nfe); throw new IOException("Unable to parse unicode value: " + unicode, nfe); } } continue; } if (hadSlash) { // handle an escaped value hadSlash = false; switch (ch) { case '\\': strout.append('\\'); break; case '\'': strout.append('\''); break; case '\"': strout.append('"'); break; case 'r': strout.append('\r'); break; case 'f': strout.append('\f'); break; case 't': strout.append('\t'); break; case 'n': strout.append('\n'); break; case 'b': strout.append('\b'); break; case 'u': { // uh-oh, we're in unicode country.... inUnicode = true; break; } default: strout.append(ch); break; } continue; } else if (ch == '\\') { hadSlash = true; continue; } strout.append(ch); } if (hadSlash) { // then we're in the weird case of a \ at the end of the // string, let's output it anyway. strout.append('\\'); } return new String(strout.toString()); } }