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我试图将数据从android设备发送到支持串行端口配置文件(SPP)的远程蓝牙设备。每次按下按钮后,我都会注意到每次打开和关闭套接字时,它都太慢了。 Run()和Onclick()函数应该执行哪些套接字命令?以下是这确实蓝牙IO类:使用Android设备通过SPP通过蓝牙发送数据
public class Selecteddevice extends Activity implements OnClickListener {
private static final String TAG = "THINBTCLIENT";
private BluetoothAdapter mBluetoothAdapter = null;
private BluetoothDevice device;
private BluetoothSocket btSocket = null;
private OutputStream outStream = null;
private static final UUID MY_UUID =
UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
public static String address;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.setContentView(R.layout.selecteddevice);
findViewById(R.id.toggleButton1).setOnClickListener(this);
findViewById(R.id.toggleButton2).setOnClickListener(this);
findViewById(R.id.toggleButton3).setOnClickListener(this);
}
@Override
public void onStart() {
super.onStart();
String address = getIntent().getStringExtra("address");
TextView tv1 = (TextView) findViewById(R.id.textView_address);
tv1.setText(" DEVICE ADDRESS: " + address);
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
device = mBluetoothAdapter.getRemoteDevice(address);
run();
}
public void run(){
mBluetoothAdapter.cancelDiscovery();
try {
btSocket = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e)
{
Log.e(TAG, "ON START: Socket creation failed.", e);
}
try {
btSocket.connect();
} catch (IOException e)
{
Log.e(TAG, "sendTestByte: Socket connection failed.", e);
}
}
public void sendTestString(String s){
try {
outStream = btSocket.getOutputStream();
} catch (IOException e)
{
Log.e(TAG, "sendTestByte: OutputStream creation failed.", e);
}
try {
outStream.write(s.getBytes());
Log.d(TAG, "sendTestByte: OutputStream write succeeded.");
} catch (IOException e)
{
Log.e(TAG, "sendTestByte: OutputStream writefailed.", e);
}
}
public void onClick(View v){
switch(v.getId())
{
case R.id.toggleButton1:
this.sendTestString("1");
break;
case R.id.toggleButton2:
this.sendTestString("2");
break;
case R.id.toggleButton3:
this.sendTestString("3");
break;
}
}
@Override
public void onPause() {
super.onPause();
if (outStream != null) {
try {
outStream.flush();
} catch (IOException e5)
{
Log.e(TAG, "ON PAUSE: Couldn't flush output stream.", e5);
}
}
try {
btSocket.close();
} catch (IOException e6)
{
Log.e(TAG, "ON PAUSE: Unable to close socket.", e6);
}
}
@Override
public void onStop() {
super.onStop();
}
@Override
public void onDestroy() {
super.onDestroy();
}
}
我与错误信息配对后的程序崩溃:
07-27 13:00:57.483: E/THINBTCLIENT(7855): sendTestByte: OutputStream writefailed.
07-27 13:00:57.483: E/THINBTCLIENT(7855): java.io.IOException: socket closed
07-27 13:00:57.483: E/THINBTCLIENT(7855): at
android.bluetooth.BluetoothSocket.write(BluetoothSocket.java:331)
...
我在做什么错?
谢谢。
之前不会丢失什么是您需要的那种蓝牙I/O的最小测试用例。所有的蓝牙操作都可能发生在一个测试功能之内吗?如果你可以提供,它可能更容易调试。 – speciousfool 2012-07-31 09:56:47
您是否在清单中设置了正确的权限? – ligi 2012-07-31 10:54:43
我有同样的问题..你有没有得到任何解决方案? – 2012-08-09 05:29:34