关于JavaScriptInterface的一系列问题
先明确主题，主要做了什么。
接手时app主体是混合开发，以elipse+android SDK为开发环境，但我是个渣渣，我只会用AS，就转成了AS，这部分等会新开文章写。
主要的view只有一个activity_main，里边写了个webview，在mainactivity里去掉了actionbar，一个导入库都没有有四个jar包，然后所有的HTML代码放在了assets里，怎么调用你们也懂得。然后mainactivity执行了html调用的所有操作，然后我遇到的问题就是一系列的线程问题。
app主要功能是调用蓝牙打印机。
遇到问题，一调用JavaScriptInterface里的service就ANR。
其实千篇一律别人的博客也都有的就简单说一下。
1. 17及以上/SDK4.4以后的版本中，就会出现js调用不了android的代码，这是版本兼容的问题，需要在调用的方法上面加一个注解：@JavascriptInterface， 这个注解需要导入一个包：import android.webkit.JavascriptInterface;
2. android3.2以上才可以调用蓝牙打印机，用的是他家的方法，传送门：http://my.csdn.net/CaysnPrinter
3.还有就是打包混淆之后不可用的问题，懒得写，传送门：https://www.2cto.com/kf/201410/344068.html
现在看我的问题，先贴代码：
/** * 预加载 * @return */ @JavascriptInterface public String beforeLoad(){ Log.i("Main", "预加载..."); if(mHandler == null){ mHandler = new MHandler(MainActivity.this); WorkService.addHandler(mHandler); } if (null == WorkService.workThread) { Intent intent = new Intent(MainActivity.this, WorkService.class); startService(intent); } Log.i("Main", "isStartPrint:--------->"+isStartPrint); handleIntent(getIntent()); if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2) { // finish(); return null; } /* 启动蓝牙 */ adapter = BluetoothAdapter.getDefaultAdapter(); if (null == adapter) { return null; } if (!adapter.isEnabled()) { if (adapter.enable()) { while (!adapter.isEnabled()) ; Log.i("Main", "Enable BluetoothAdapter"); } else { Toast.makeText(MainActivity.this, "请允许开启蓝牙设备!", Toast.LENGTH_SHORT).show(); return null; } } return getPrinter() ; }
我的问题是在：
Intent intent = new Intent(MainActivity.this, WorkService.class); startService(intent);
这里出的问题，其实到现在我也没搞懂addJavaScriptInterface这里是子线程还是主线程，但是如果他不是主线程的话，我后边的耗时操作估计就不会阻塞了。
所以他是主线程，然后贴全部的service代码，就知道我这里是怎么卡的了
1 package com.printer.service; 2 3 import java.lang.ref.WeakReference; 4 import java.util.ArrayList; 5 import java.util.List; 6 7 import com.printer.constant.Global; 8 9 import android.app.Service; 10 import android.content.Intent; 11 import android.os.Handler; 12 import android.os.IBinder; 13 import android.os.Message; 14 import android.util.Log; 15 16 /** 17 * 观察者模式 18 * 19 * @author Administrator 20 * 21 */ 22 public class WorkService extends Service { 23 24 // Service和workThread通信用mHandler 25 public static WorkThread workThread = null; 26 private static Handler mHandler = null; 27 private static List<Handler> targetsHandler = new ArrayList<Handler>(5); 28 29 @Override 30 public IBinder onBind(Intent arg0) { 31 // TODO Auto-generated method stub 32 return null; 33 } 34 35 @Override 36 public void onCreate() { 37 mHandler = new MHandler(this); 38 /*workThread = new WorkThread(mHandler); 39 workThread.start();*/ 40 new Thread(new Runnable() { 41 @Override 42 public void run() { 43 workThread = new WorkThread(mHandler); 44 workThread.start(); 45 } 46 }).start(); 47 } 48 49 @Override 50 public int onStartCommand(Intent intent, int flags, int startId) { 51 Log.v("WorkService", "onStartCommand"); 52 Message msg = Message.obtain(); 53 msg.what = Global.MSG_ALLTHREAD_READY; 54 notifyHandlers(msg); 55 return START_NOT_STICKY; 56 } 57 58 @Override 59 public void onDestroy() { 60 workThread.disconnectBt(); 61 workThread.disconnectBle(); 62 workThread.disconnectNet(); 63 workThread.disconnectUsb(); 64 workThread.quit(); 65 workThread = null; 66 Log.v("DrawerService", "onDestroy"); 67 } 68 69 static class MHandler extends Handler { 70 71 WeakReference<WorkService> mService; 72 73 MHandler(WorkService service) { 74 mService = new WeakReference<WorkService>(service); 75 } 76 77 @Override 78 public void handleMessage(Message msg) { 79 notifyHandlers(msg); 80 } 81 } 82 83 /** 84 * 85 * @param handler 86 */ 87 public static void addHandler(Handler handler) { 88 if (!targetsHandler.contains(handler)) { 89 targetsHandler.add(handler); 90 } 91 } 92 93 /** 94 * 95 * @param handler 96 */ 97 public static void delHandler(Handler handler) { 98 if (targetsHandler.contains(handler)) { 99 targetsHandler.remove(handler); 100 } 101 } 102 103 /** 104 * 105 * @param msg 106 */ 107 public static void notifyHandlers(Message msg) { 108 for (int i = 0; i < targetsHandler.size(); i++) { 109 Message message = Message.obtain(msg); 110 targetsHandler.get(i).sendMessage(message); 111 } 112 } 113 114 }
我是在onCreate里出的问题：
@Override
public void onCreate() {
mHandler = new MHandler(this);
workThread = new WorkThread(mHandler);
workThread.start();
}
这是我接手时的代码，然后加了一个newTheard（new Runnable（）{}）.start（）;把耗时操作也就是workthread放进去。
然后就解决了这样一个很脑残的问题，网上零零散散解释不清楚，联机测试run的时候就没问题但是打包不管混淆不混淆都会ANR。
甚至还有人给的解决方法是在JavaScriptInterface这类上继承activity，这个我试过了如果里边的耗时操作不多，估计，，，就脑残了。
总结：不要在JavaScriptInterface这个类里的任何方法加入耗时操作，还有一篇关于ANR写的特别好。传送门：http://www.jianshu.com/p/f14e89641109
这里唠叨一句，大家最开始找工作的时候都背过什么面试宝典，关于ANR只是说过两个原因，总体来说我的算第三种，所以建议还是好好看看。
感觉我的问题和JavaScriptInterface一点关系都没有。。。。随手贴一篇我这里边蓝牙打印机是咋写的。
1 package com.printer.service; 2 3 import android.graphics.Bitmap; 4 import android.hardware.usb.UsbDevice; 5 import android.hardware.usb.UsbManager; 6 import android.os.Build; 7 import android.os.Bundle; 8 import android.os.Handler; 9 import android.os.Looper; 10 import android.os.Message; 11 import android.util.Log; 12 13 import com.lvrenyang.io.BLEPrinting; 14 import com.lvrenyang.io.BTPrinting; 15 import com.lvrenyang.io.NETPrinting; 16 import com.lvrenyang.io.Pos; 17 import com.lvrenyang.io.USBPrinting; 18 import com.printer.constant.Global; 19 20 public class WorkThread extends Thread { 21 22 private static final String TAG = "WorkThread"; 23 public static Handler workHandler = null; 24 private static Looper mLooper = null; 25 public static Handler targetHandler = null; 26 private static boolean threadInitOK = false; 27 private static boolean isConnecting = false; 28 private static BTPrinting bt = null; 29 private static BLEPrinting ble = null; 30 private static NETPrinting net = null; 31 private static USBPrinting usb = null; 32 private static Pos pos = new Pos(); 33 34 public WorkThread(Handler handler) { 35 threadInitOK = false; 36 targetHandler = handler; 37 if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1) { 38 if (usb == null) 39 usb = new USBPrinting(); 40 } 41 if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) { 42 if (ble == null) 43 ble = new BLEPrinting(); 44 } 45 if (bt == null) 46 bt = new BTPrinting(); 47 if (net == null) 48 net = new NETPrinting(); 49 } 50 51 @Override 52 public void start() { 53 super.start(); 54 while (!threadInitOK) 55 ; 56 } 57 58 @Override 59 public void run() { 60 Looper.prepare(); 61 mLooper = Looper.myLooper(); 62 if (null == mLooper) 63 Log.v(TAG, "mLooper is null pointer"); 64 else 65 Log.v(TAG, "mLooper is valid"); 66 workHandler = new WorkHandler(); 67 threadInitOK = true; 68 Looper.loop(); 69 } 70 71 private static class WorkHandler extends Handler { 72 73 @Override 74 public void handleMessage(Message msg) { 75 76 switch (msg.what) { 77 case Global.MSG_WORKTHREAD_HANDLER_CONNECTBT: { 78 isConnecting = true; 79 80 pos.Set(bt); 81 82 String BTAddress = (String) msg.obj; 83 boolean result = bt.Open(BTAddress); 84 85 Message smsg = targetHandler 86 .obtainMessage(Global.MSG_WORKTHREAD_SEND_CONNECTBTRESULT); 87 smsg.arg1 = result ? 1 : 0; 88 targetHandler.sendMessage(smsg); 89 90 isConnecting = false; 91 break; 92 } 93 94 case Global.MSG_WORKTHREAD_HANDLER_CONNECTBLE: { 95 isConnecting = true; 96 97 pos.Set(ble); 98 99 String BTAddress = (String) msg.obj; 100 boolean result = ble.Open(BTAddress); 101 102 Message smsg = targetHandler 103 .obtainMessage(Global.MSG_WORKTHREAD_SEND_CONNECTBLERESULT); 104 smsg.arg1 = result ? 1 : 0; 105 targetHandler.sendMessage(smsg); 106 107 isConnecting = false; 108 break; 109 } 110 111 case Global.MSG_WORKTHREAD_HANDLER_CONNECTNET: { 112 isConnecting = true; 113 114 pos.Set(net); 115 116 int PortNumber = msg.arg1; 117 String IPAddress = (String) msg.obj; 118 boolean result = net.Open(IPAddress, PortNumber); 119 120 Message smsg = targetHandler 121 .obtainMessage(Global.MSG_WORKTHREAD_SEND_CONNECTNETRESULT); 122 smsg.arg1 = result ? 1 : 0; 123 targetHandler.sendMessage(smsg); 124 125 isConnecting = false; 126 break; 127 } 128 129 case Global.MSG_WORKTHREAD_HANDLER_CONNECTUSB: { 130 isConnecting = true; 131 132 pos.Set(usb); 133 134 UsbManager manager = (UsbManager) msg.obj; 135 Bundle data = msg.getData(); 136 UsbDevice device = data.getParcelable(Global.PARCE1); 137 138 boolean result = usb.Open(manager, device); 139 Message smsg = targetHandler 140 .obtainMessage(Global.MSG_WORKTHREAD_SEND_CONNECTUSBRESULT); 141 smsg.arg1 = result ? 1 : 0; 142 targetHandler.sendMessage(smsg); 143 144 isConnecting = false; 145 break; 146 } 147 148 case Global.CMD_WRITE: { 149 Bundle data = msg.getData(); 150 byte[] buffer = data.getByteArray(Global.BYTESPARA1); 151 int offset = data.getInt(Global.INTPARA1); 152 int count = data.getInt(Global.INTPARA2); 153 154 Message smsg = targetHandler 155 .obtainMessage(Global.CMD_WRITERESULT); 156 if (pos.IO.Write(buffer, offset, count) == count) { 157 smsg.arg1 = 1; 158 } else { 159 smsg.arg1 = 0; 160 } 161 targetHandler.sendMessage(smsg); 162 163 break; 164 } 165 166 // USB写入自带流控制，不需要读取状态�? 167 case Global.CMD_POS_WRITE: { 168 Bundle data = msg.getData(); 169 byte[] buffer = data.getByteArray(Global.BYTESPARA1); 170 int offset = data.getInt(Global.INTPARA1); 171 int count = data.getInt(Global.INTPARA2); 172 173 Message smsg = targetHandler 174 .obtainMessage(Global.CMD_POS_WRITERESULT); 175 176 boolean result = false; 177 178 if (USBPrinting.class.getName().equals( 179 pos.IO.getClass().getName())) 180 result = true; 181 else 182 result = pos.POS_QueryOnline(1000); 183 184 if (result) { 185 if (pos.IO.Write(buffer, offset, count) == count) 186 smsg.arg1 = 1; 187 else 188 smsg.arg1 = 0; 189 } else { 190 smsg.arg1 = 0; 191 } 192 targetHandler.sendMessage(smsg); 193 194 break; 195 } 196 197 case Global.CMD_POS_SETKEY: { 198 Bundle data = msg.getData(); 199 byte[] key = data.getByteArray(Global.BYTESPARA1); 200 201 boolean result = false; 202 203 if (USBPrinting.class.getName().equals( 204 pos.IO.getClass().getName())) 205 result = true; 206 else 207 result = pos.POS_QueryOnline(1000); 208 209 Message smsg = targetHandler 210 .obtainMessage(Global.CMD_POS_SETKEYRESULT); 211 212 if (result) { 213 pos.POS_SetKey(key); 214 smsg.arg1 = 1; 215 } else { 216 smsg.arg1 = 0; 217 } 218 targetHandler.sendMessage(smsg); 219 220 break; 221 } 222 223 case Global.CMD_POS_CHECKKEY: { 224 Bundle data = msg.getData(); 225 byte[] key = data.getByteArray(Global.BYTESPARA1); 226 227 boolean result = false; 228 229 if (USBPrinting.class.getName().equals( 230 pos.IO.getClass().getName())) 231 result = true; 232 else 233 result = pos.POS_QueryOnline(1000); 234 235 Message smsg = targetHandler 236 .obtainMessage(Global.CMD_POS_CHECKKEYRESULT); 237 if (result) { 238 if (pos.POS_CheckKey(key)) 239 smsg.arg1 = 1; 240 else 241 smsg.arg1 = 0; 242 } else { 243 smsg.arg1 = 0; 244 } 245 targetHandler.sendMessage(smsg); 246 247 break; 248 } 249 case Global.CMD_POS_PRINTPICTURE: { 250 Bundle data = msg.getData(); 251 Bitmap mBitmap = (Bitmap) data.getParcelable(Global.PARCE1); 252 int nWidth = data.getInt(Global.INTPARA1); 253 int nMode = data.getInt(Global.INTPARA2); 254 255 boolean result = false; 256 257 if (USBPrinting.class.getName().equals( 258 pos.IO.getClass().getName())) 259 result = true; 260 else 261 result = pos.POS_QueryOnline(1000); 262 263 Message smsg = targetHandler 264 .obtainMessage(Global.CMD_POS_PRINTPICTURERESULT); 265 if (result) { 266 pos.POS_PrintPicture(mBitmap, nWidth, nMode); 267 268 if (USBPrinting.class.getName().equals( 269 pos.IO.getClass().getName())) 270 result = true; 271 else 272 result = pos.POS_QueryOnline(1000); 273 274 if (result) 275 smsg.arg1 = 1; 276 else 277 smsg.arg1 = 0; 278 } else { 279 smsg.arg1 = 0; 280 } 281 targetHandler.sendMessage(smsg); 282 283 break; 284 } 285 286 case Global.CMD_POS_PRINTBWPICTURE: { 287 Bundle data = msg.getData(); 288 // Bitmap mBitmap = (Bitmap) data.get(Global.OBJECT1); 289 Bitmap mBitmap = (Bitmap) data.getParcelable(Global.PARCE1); 290 int nWidth = data.getInt(Global.INTPARA1); 291 int nMode = data.getInt(Global.INTPARA2); 292 293 boolean result = false; 294 295 if (USBPrinting.class.getName().equals( 296 pos.IO.getClass().getName())) 297 result = true; 298 else 299 result = pos.POS_QueryOnline(1000); 300 301 Message smsg = targetHandler 302 .obtainMessage(Global.CMD_POS_PRINTPICTURERESULT); 303 if (result) { 304 pos.POS_PrintBWPic(mBitmap, nWidth, nMode); 305 306 if (USBPrinting.class.getName().equals( 307 pos.IO.getClass().getName())) 308 result = true; 309 else 310 result = pos.POS_QueryOnline(1000); 311 312 if (result) 313 smsg.arg1 = 1; 314 else 315 smsg.arg1 = 0; 316 } else { 317 smsg.arg1 = 0; 318 } 319 targetHandler.sendMessage(smsg); 320 321 break; 322 } 323 324 case Global.CMD_POS_SALIGN: { 325 Bundle data = msg.getData(); 326 int align = data.getInt(Global.INTPARA1); 327 328 boolean result = false; 329 330 if (USBPrinting.class.getName().equals( 331 pos.IO.getClass().getName())) 332 result = true; 333 else 334 result = pos.POS_QueryOnline(1000); 335 336 Message smsg = targetHandler 337 .obtainMessage(Global.CMD_POS_SALIGNRESULT); 338 if (result) { 339 pos.POS_S_Align(align); 340 smsg.arg1 = 1; 341 } else { 342 smsg.arg1 = 0; 343 } 344 targetHandler.sendMessage(smsg); 345 346 break; 347 } 348 349 case Global.CMD_POS_SETLINEHEIGHT: { 350 Bundle data = msg.getData(); 351 int nHeight = data.getInt(Global.INTPARA1); 352 353 boolean result = false; 354 355 if (USBPrinting.class.getName().equals( 356 pos.IO.getClass().getName())) 357 result = true; 358 else 359 result = pos.POS_QueryOnline(1000); 360 361 Message smsg = targetHandler 362 .obtainMessage(Global.CMD_POS_SETLINEHEIGHTRESULT); 363 if (result) { 364 pos.POS_SetLineHeight(nHeight); 365 smsg.arg1 = 1; 366 } else { 367 smsg.arg1 = 0; 368 } 369 targetHandler.sendMessage(smsg); 370 371 break; 372 } 373 374 case Global.CMD_POS_SETRIGHTSPACE: { 375 Bundle data = msg.getData(); 376 int nDistance = data.getInt(Global.INTPARA1); 377 378 boolean result = false; 379 380 if (USBPrinting.class.getName().equals( 381 pos.IO.getClass().getName())) 382 result = true; 383 else 384 result = pos.POS_QueryOnline(1000); 385 386 Message smsg = targetHandler 387 .obtainMessage(Global.CMD_POS_SETRIGHTSPACERESULT); 388 if (result) { 389 pos.POS_SetRightSpacing(nDistance); 390 smsg.arg1 = 1; 391 } else { 392 smsg.arg1 = 0; 393 } 394 targetHandler.sendMessage(smsg); 395 396 break; 397 } 398 399 case Global.CMD_POS_STEXTOUT: { 400 Bundle data = msg.getData(); 401 String pszString = data.getString(Global.STRPARA1); 402 String encoding = data.getString(Global.STRPARA2); 403 int nOrgx = data.getInt(Global.INTPARA1); 404 int nWidthTimes = data.getInt(Global.INTPARA2); 405 int nHeightTimes = data.getInt(Global.INTPARA3); 406 int nFontType = data.getInt(Global.INTPARA4); 407 int nFontStyle = data.getInt(Global.INTPARA5); 408 409 boolean result = false; 410 411 if (USBPrinting.class.getName().equals( 412 pos.IO.getClass().getName())) 413 result = true; 414 else 415 result = pos.POS_QueryOnline(1000); 416 417 Message smsg = targetHandler 418 .obtainMessage(Global.CMD_POS_STEXTOUTRESULT); 419 if (result) { 420 pos.POS_S_TextOut(pszString, encoding, nOrgx, nWidthTimes, 421 nHeightTimes, nFontType, nFontStyle); 422 smsg.arg1 = 1; 423 } else { 424 smsg.arg1 = 0; 425 } 426 targetHandler.sendMessage(smsg); 427 428 break; 429 } 430 431 case Global.CMD_POS_SETCHARSETANDCODEPAGE: { 432 Bundle data = msg.getData(); 433 int nCharSet = data.getInt(Global.INTPARA1); 434 int nCodePage = data.getInt(Global.INTPARA2); 435 436 boolean result = false; 437 438 if (USBPrinting.class.getName().equals( 439 pos.IO.getClass().getName())) 440 result = true; 441 else 442 result = pos.POS_QueryOnline(1000); 443 444 Message smsg = targetHandler 445 .obtainMessage(Global.CMD_POS_SETCHARSETANDCODEPAGERESULT); 446 if (result) { 447 pos.POS_SetCharSetAndCodePage(nCharSet, nCodePage); 448 smsg.arg1 = 1; 449 } else { 450 smsg.arg1 = 0; 451 } 452 targetHandler.sendMessage(smsg); 453 454 break; 455 } 456 457 case Global.CMD_POS_SETBARCODE: { 458 Bundle data = msg.getData(); 459 String strBarcode = data.getString(Global.STRPARA1); 460 int nOrgx = data.getInt(Global.INTPARA1); 461 int nType = data.getInt(Global.INTPARA2); 462 int nWidthX = data.getInt(Global.INTPARA3); 463 int nHeight = data.getInt(Global.INTPARA4); 464 int nHriFontType = data.getInt(Global.INTPARA5); 465 int nHriFontPosition = data.getInt(Global.INTPARA6); 466 467 boolean result = false; 468 469 if (USBPrinting.class.getName().equals( 470 pos.IO.getClass().getName())) 471 result = true; 472 else 473 result = pos.POS_QueryOnline(1000); 474 475 Message smsg = targetHandler 476 .obtainMessage(Global.CMD_POS_SETBARCODERESULT); 477 if (result) { 478 pos.POS_S_SetBarcode(strBarcode, nOrgx, nType, nWidthX, 479 nHeight, nHriFontType, nHriFontPosition); 480 smsg.arg1 = 1; 481 } else { 482 smsg.arg1 = 0; 483 } 484 targetHandler.sendMessage(smsg); 485 486 break; 487 } 488 489 case Global.CMD_POS_SETQRCODE: { 490 Bundle data = msg.getData(); 491 String strQrcode = data.getString(Global.STRPARA1); 492 int nWidthX = data.getInt(Global.INTPARA1); 493 int nVersion = data.getInt(Global.INTPARA2); 494 int necl = data.getInt(Global.INTPARA3); 495 496 boolean result = false; 497 498 if (USBPrinting.class.getName().equals( 499 pos.IO.getClass().getName())) 500 result = true; 501 else 502 result = pos.POS_QueryOnline(1000); 503 504 Message smsg = targetHandler 505 .obtainMessage(Global.CMD_POS_SETQRCODERESULT); 506 if (result) { 507 pos.POS_S_SetQRcode(strQrcode, nWidthX, nVersion, necl); 508 smsg.arg1 = 1; 509 } else { 510 smsg.arg1 = 0; 511 } 512 targetHandler.sendMessage(smsg); 513 514 break; 515 } 516 517 case Global.CMD_EPSON_SETQRCODE: { 518 Bundle data = msg.getData(); 519 String strQrcode = data.getString(Global.STRPARA1); 520 int nWidthX = data.getInt(Global.INTPARA1); 521 int nVersion = data.getInt(Global.INTPARA2); 522 int necl = data.getInt(Global.INTPARA3); 523 524 boolean result = false; 525 526 if (USBPrinting.class.getName().equals( 527 pos.IO.getClass().getName())) 528 result = true; 529 else 530 result = pos.POS_QueryOnline(1000); 531 532 Message smsg = targetHandler 533 .obtainMessage(Global.CMD_EPSON_SETQRCODERESULT); 534 if (result) { 535 pos.POS_EPSON_SetQRCode(strQrcode, nWidthX, nVersion, necl); 536 smsg.arg1 = 1; 537 } else { 538 smsg.arg1 = 0; 539 } 540 targetHandler.sendMessage(smsg); 541 542 break; 543 } 544 545 case Global.CMD_EMBEDDED_SEND_TO_UART: { 546 Bundle data = msg.getData(); 547 byte[] buffer = data.getByteArray(Global.BYTESPARA1); 548 int offset = data.getInt(Global.INTPARA1); 549 int count = data.getInt(Global.INTPARA2); 550 551 Message smsg = targetHandler 552 .obtainMessage(Global.CMD_EMBEDDED_SEND_TO_UART_RESULT); 553 if (pos.EMBEDDED_WriteToUart(buffer, offset, count)) { 554 smsg.arg1 = 1; 555 } else { 556 smsg.arg1 = 0; 557 } 558 targetHandler.sendMessage(smsg); 559 560 break; 561 } 562 } 563 564 } 565 566 } 567 568 public void quit() { 569 try { 570 if (null != mLooper) { 571 mLooper.quit(); 572 mLooper = null; 573 } 574 } catch (Exception e) { 575 e.printStackTrace(); 576 } 577 } 578 579 public void disconnectBt() { 580 try { 581 bt.Close(); 582 } catch (Exception e) { 583 e.printStackTrace(); 584 } 585 } 586 587 public void disconnectBle() { 588 try { 589 ble.Close(); 590 } catch (Exception e) { 591 e.printStackTrace(); 592 } 593 } 594 595 public void disconnectNet() { 596 try { 597 net.Close(); 598 } catch (Exception e) { 599 e.printStackTrace(); 600 } 601 } 602 603 public void disconnectUsb() { 604 try { 605 usb.Close(); 606 } catch (Exception e) { 607 e.printStackTrace(); 608 } 609 } 610 611 public void connectBle(String BTAddress) { 612 if ((null != workHandler) && (null != mLooper)) { 613 Message msg = workHandler 614 .obtainMessage(Global.MSG_WORKTHREAD_HANDLER_CONNECTBLE); 615 msg.obj = BTAddress; 616 workHandler.sendMessage(msg); 617 } else { 618 if (null == workHandler) 619 Log.v(TAG, "workHandler is null pointer"); 620 621 if (null == mLooper) 622 Log.v(TAG, "mLooper is null pointer"); 623 } 624 } 625 626 public void connectBt(String BTAddress) { 627 if ((null != workHandler) && (null != mLooper)) { 628 Message msg = workHandler 629 .obtainMessage(Global.MSG_WORKTHREAD_HANDLER_CONNECTBT); 630 msg.obj = BTAddress; 631 workHandler.sendMessage(msg); 632 } else { 633 if (null == workHandler) 634 Log.v(TAG, "workHandler is null pointer"); 635 636 if (null == mLooper) 637 Log.v(TAG, "mLooper is null pointer"); 638 } 639 } 640 641 public void connectNet(String IPAddress, int PortNumber) { 642 if ((null != workHandler) && (null != mLooper)) { 643 Message msg = workHandler 644 .obtainMessage(Global.MSG_WORKTHREAD_HANDLER_CONNECTNET); 645 msg.arg1 = PortNumber; 646 msg.obj = IPAddress; 647 workHandler.sendMessage(msg); 648 } else { 649 if (null == workHandler) 650 Log.v("WorkThread connectNet", "workHandler is null pointer"); 651 652 if (null == mLooper) 653 Log.v("WorkThread connectNet", "mLooper is null pointer"); 654 } 655 } 656 657 public void connectUsb(UsbManager manager, UsbDevice device) { 658 if ((null != workHandler) && (null != mLooper)) { 659 Message msg = workHandler 660 .obtainMessage(Global.MSG_WORKTHREAD_HANDLER_CONNECTUSB); 661 msg.obj = manager; 662 Bundle data = new Bundle(); 663 data.putParcelable(Global.PARCE1, device); 664 msg.setData(data); 665 workHandler.sendMessage(msg); 666 } else { 667 if (null == workHandler) 668 Log.v("WorkThread connectUsb", "workHandler is null pointer"); 669 670 if (null == mLooper) 671 Log.v("WorkThread connectUsb", "mLooper is null pointer"); 672 673 } 674 } 675 676 public boolean isConnecting() { 677 return isConnecting; 678 } 679 680 public boolean isConnected() { 681 if (bt.IsOpened() || net.IsOpened() || usb.IsOpened() || ble.IsOpened()) 682 return true; 683 else 684 return false; 685 } 686 687 /** 688 * 689 * @param cmd 690 */ 691 public void handleCmd(int cmd, Bundle data) { 692 if ((null != workHandler) && (null != mLooper)) { 693 Message msg = workHandler.obtainMessage(cmd); 694 msg.setData(data); 695 workHandler.sendMessage(msg); 696 } else { 697 if (null == workHandler) 698 Log.v(TAG, "workHandler is null pointer"); 699 if (null == mLooper) 700 Log.v(TAG, "mLooper is null pointer"); 701 } 702 } 703 }
