蓝牙演示实例——MoveBoxs

package sample; import box.Box; import bt.BTClient; import bt.ConnectionLostException; import javax.microedition.io.StreamConnection; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Font; import javax.microedition.lcdui.Graphics; public class ClientCanvas extends Canvas implements Runnable { private final static int deviceNum = 2; private BTSampleMIDlet midlet; private int exitCount; private String[] remoteDevices;// doChoice()之前使用，之后作废 private String[] devicesName;// doChoice()完成初始化后使用 private Box[] boxs; private int[][] boxsCoor; private int[][] dnsCoor;// devices name Coordinate private int fontHeight; private int[] fontWidth; private boolean isBuilding; private boolean isChoice; private boolean isConnecting; private boolean running; private boolean btOver;// bluetooth connection is over; private boolean hasExce;// has a Exception private boolean isQuit; private int srcWidth; private int srcHeight; private int[] colorArray; private int useKey;// 仅限当前线程进行使用，防线程无序导致发送的key与运行的key前后不一致 private int localKey;// 当前线程与系统线程同时使用 private int remoteKey; private int activeDevice; private String exceptionStr; public ClientCanvas(BTSampleMIDlet mid) { setFullScreenMode(true); midlet = mid; exitCount = 0; boxs = new Box[deviceNum]; boxs[1] = new Box(100, 100);// Server, Remote boxs[0] = new Box(100, 200);// Client, Local boxsCoor = new int[2][2]; boxsCoor[0][0] = 100; boxsCoor[0][1] = 200; boxsCoor[1][0] = 100; boxsCoor[1][1] = 100; dnsCoor = new int[2][2]; dnsCoor[0][0] = boxsCoor[0][0]; dnsCoor[0][1] = boxsCoor[0][1] - (boxs[0].getHeightBox() >> 1); dnsCoor[1][0] = boxsCoor[1][0]; dnsCoor[1][1] = boxsCoor[1][1] - (boxs[1].getHeightBox() >> 1); devicesName = new String[deviceNum]; devicesName[0] = BTClient.getLocalDeviceName(); devicesName[1] = ""; fontHeight = 0; fontWidth = new int[deviceNum]; isBuilding = isChoice = isConnecting = running = btOver = hasExce = isQuit = false; srcWidth = 240; srcHeight = 310; useKey = localKey = remoteKey = 0; activeDevice = -1; exceptionStr = ""; } private void initColorArray() { int len = srcWidth * fontHeight; colorArray = new int[len]; for (int i = 0; i < len; i++) { colorArray[i] = 0x7f0000ff; } } protected void paint(Graphics g) { // TODO Auto-generated method stub g.setColor(0); g.fillRect(0, 0, 240, 310); // 内容显示 if (isBuilding == true) { showWaiting(g); } else if (isChoice == true) { drawChoiceFrame(g); showDevicesName(g); } else if (isConnecting == true) { showConnectDeviceInfo(g); entryGame(g); } else if (running == true) { drawBoxs(g); showCoordinates(g); testQuit(g); } else if (btOver == true) { drawBoxs(g); showCoordinates(g); drawBtOver(g); } showExceptionInfo(g); } private void showWaiting(Graphics g) { g.setColor(0xffffff); g.drawString("Waiting for connecting", 120, 155, Graphics.HCENTER | Graphics.BOTTOM); } private void drawChoiceFrame(Graphics g) { // 考虑到activeDevice初始值为-1 if (activeDevice >= 0) { g.setColor(0x0000ff); g.fillRect(0, activeDevice * 20, 240, 20); } } private void showDevicesName(Graphics g) { g.setColor(0xffffff); int len = remoteDevices.length; for (int i = 0; i < len; i++) { g.drawString(remoteDevices[i], 120, 20 * (i + 1), Graphics.HCENTER | Graphics.BOTTOM); } } private void showConnectDeviceInfo(Graphics g) { g.setColor(0xffffff); g.drawString("Connection is OK!", 120, 20, Graphics.HCENTER | Graphics.TOP); g.drawString("Remote Device Name:", 120, 40, Graphics.HCENTER | Graphics.TOP); g.drawString(devicesName[1], 120, 60, Graphics.HCENTER | Graphics.TOP); } private void entryGame(Graphics g) { g.setColor(0xffffff); g.drawString("OK", 0, srcHeight, Graphics.BOTTOM | Graphics.LEFT); } private void drawBoxs(Graphics g) { g.setColor(0xffff00); int len = deviceNum; for (int i = 0; i < len; i++) { // 先画方块，再画设备名 Box b = boxs[i]; g.fillRect(b.getDrawX(), b.getDrawY(), b.getWidthBox(), b .getHeightBox()); g.drawLine(0, b.getCenterY(), srcWidth, b.getCenterY()); g.drawLine(b.getCenterX(), 0, b.getCenterX(), srcHeight); g.drawString(devicesName[i], dnsCoor[i][0], dnsCoor[i][1], Graphics.HCENTER | Graphics.TOP); } } private void showCoordinates(Graphics g) { // 画出Local Box坐标信息 g.drawRGB(colorArray, 0, srcWidth, 0, 0, srcWidth, fontHeight, true); g.drawString("X = " + boxsCoor[0][0], 0, 0, Graphics.TOP | Graphics.LEFT); g.drawString(devicesName[0], 120, 0, Graphics.HCENTER | Graphics.TOP); g.drawString("Y = " + boxsCoor[0][1], srcWidth, 0, Graphics.TOP | Graphics.RIGHT); // 画出Remote Box坐标信息 g.drawRGB(colorArray, 0, srcWidth, 0, srcHeight - fontHeight, srcWidth, fontHeight, true); g.drawString("X = " + boxsCoor[1][0], 0, srcHeight, Graphics.BOTTOM | Graphics.LEFT); g.drawString(devicesName[1], 120, srcHeight, Graphics.HCENTER | Graphics.BOTTOM); g.drawString("Y = " + boxsCoor[1][1], srcWidth, srcHeight, Graphics.BOTTOM | Graphics.RIGHT); } private void drawBtOver(Graphics g) { g.setColor(0xffffff); g.drawString("The boxs are coincident!!", 120, 155, Graphics.BOTTOM | Graphics.HCENTER); g.drawString("Please Pressed the OK key!", 120, 175, Graphics.BOTTOM | Graphics.HCENTER); } /** *如果有按左软键，将显示退出询问，连续两次按左软键后将执行退出命令。 */ private void testQuit(Graphics g) { int key = useKey; if (key == -6) { g.drawString("Quit this app?", srcWidth >> 1, srcHeight - 50, Graphics.HCENTER | Graphics.TOP); g.drawString("YES", 0, srcHeight, Graphics.BOTTOM | Graphics.LEFT); g.drawString("NO", srcWidth, srcHeight, Graphics.BOTTOM | Graphics.RIGHT); } } private void showExceptionInfo(Graphics g) { if (hasExce) { g.setColor(0); g.fillRect(0, 0, srcWidth, srcHeight); g.setColor(0xffffff); g .drawString(exceptionStr, 120, 155, Graphics.BOTTOM | Graphics.TOP); g.drawString("OK", 0, srcHeight, Graphics.BOTTOM | Graphics.LEFT); } } public void run() { isBuilding = true; repaint(); BTClient btClient = new BTClient(); btClient.clientStartInquiry(); remoteDevices = btClient.getDevicesVec(); isBuilding = false; isChoice = true; loop1: while (isChoice) { useKey = localKey; setActiveDev(); doChoice(); if (isChoice == false) { isConnecting = true; useKey = 0; localKey = 0; break loop1; } repaint(); useKey = 0; localKey = 0; try { Thread.sleep(100); } catch (InterruptedException e) { System.out.println("InterruptedException while(isChoice)"); } } // isChoice = false; btClient.clientSearchService(activeDevice); String connURL = btClient.getConnURL(); System.out.println("connURL: " + connURL); StreamConnection conn = null; conn = btClient.getStreamConnection(connURL); DataInputStream dis = null; dis = btClient.getDIS(conn); DataOutputStream dos = null; dos = btClient.getDOS(conn); // 向服务端发送本地设备名字 btClient.sendLocalDeviceName(dos, devicesName[0]); initFontPara(); initColorArray(); loop2: while (isConnecting) { useKey = localKey; makeSure(); if (isConnecting == false) { useKey = 0; localKey = 0; running = true; break loop2; } repaint(); useKey = 0; localKey = 0; try { Thread.sleep(100); } catch (InterruptedException e) { System.out .println("InterruptedException