j2me手机蓝牙OBEX传文件代码

最新推荐文章于 2025-06-04 15:41:15 发布

最新推荐文章于 2025-06-04 15:41:15 发布 · 149 阅读

简单j2me蓝牙OBEX传文件代码
最近想写一手机程序实现以下功能，在蓝牙的有效距离内，如果有其他手机的蓝牙设置为可见状态，自己的手机自动向其他手机发送指定的图片。查了下j2me的api发现通过obex对象交换协议比较容易实现。
实现代码很简单写个程序弄个死循环让手机一直搜索周围蓝牙设备，如果发现到周围有蓝牙设备，发送图片。
步骤如下
1.初始化蓝牙代码
LocalDevice local_device = LocalDevice.getLocalDevice();
DiscoveryAgent disc_agent = local_device.getDiscoveryAgent();
local_device.setDiscoverable(DiscoveryAgent.LIAC);
2.搜索周围的蓝牙设备
InquiryListener inq_listener = new InquiryListener();
disc_agent.startInquiry(DiscoveryAgent.LIAC, inq_listener);
synchronized(inq_listener)
{
inq_listener.wait();
}
3.遍历所有蓝牙设备，查找每一个蓝牙设备的"OBEX Object Push" (0x1105)服务
while( devices.hasMoreElements() ) {
synchronized(serv_listener)
{
RemoteDevice rd= (RemoteDevice)devices.nextElement();
t.setString(rd.getBluetoothAddress());
Thread.sleep(5000);
t.setString(rd.getFriendlyName(true));
Thread.sleep(5000);
disc_agent.searchServices(null, u,rd, serv_listener);
serv_listener.wait();
}
4.从搜索到的ServiceRecord 中取出连接字符串进行连接
if (serv_listener.service!=null){
String url;
url = serv_listener.service.getConnectionURL(0, false);
Connection conn = Connector.open(url);
ClientSession cs=(ClientSession)conn;
cs.connect(null);
5.从资源中取出图片发送
byte filebytes[]=getImageData("/images/leaf.png");
HeaderSet hs=cs.createHeaderSet();
hs.setHeader(HeaderSet.NAME,"leaf.png");
hs.setHeader(HeaderSet.TYPE, "text/plain");
hs.setHeader(HeaderSet.LENGTH,new Long(filebytes.length));
Operation putOperation=cs.put(hs);
OutputStream outputStream=putOperation.openOutputStream();
outputStream.write(filebytes);
outputStream.close();
putOperation.close();
conn.close();
6.设备查询类InquiryListener的代码
class InquiryListener implements DiscoveryListener{
public Vector cached_devices;
public InquiryListener() {
cached_devices = new Vector();
}
public void deviceDiscovered( RemoteDevice btDevice, DeviceClass cod ) {
if( ! cached_devices.contains( btDevice ) ) {
cached_devices.addElement( btDevice );
}
}
public void inquiryCompleted( int discType ) {
synchronized(this){ this.notify(); }
}
public void servicesDiscovered( int transID, ServiceRecord[] servRecord ) {}
public void serviceSearchCompleted( int transID, int respCode ) {}
}
7.服务查询类ServiceListener的代码
class ServiceListener implements DiscoveryListener{
public ServiceRecord service;
public ServiceListener() { }
public void servicesDiscovered( int transID, ServiceRecord[] servRecord ) {
service = servRecord[0];
}
public void serviceSearchCompleted( int transID, int respCode ) {
synchronized( this ){ this.notify();}
}
public void deviceDiscovered( RemoteDevice btDevice, DeviceClass cod ){}
public void inquiryCompleted( int discType ){}
}