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java.io.IOException: bt socket closed, read return: -1
08-14 20:30:11.519 30608-1676/com.example.lg.scoreboardapp W/System.err: at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:434)
08-14 20:30:11.519 30608-1676/com.example.lg.scoreboardapp W/System.err: at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
08-14 20:30:11.519 30608-1676/com.example.lg.scoreboardapp W/System.err: at java.io.InputStreamReader.read(InputStreamReader.java:231)
08-14 20:30:11.519 30608-1676/com.example.lg.scoreboardapp W/System.err: at java.io.BufferedReader.fillBuf(BufferedReader.java:145)
08-14 20:30:11.519 30608-1676/com.example.lg.scoreboardapp W/System.err: at java.io.BufferedReader.readLine(BufferedReader.java:397)
08-14 20:30:11.519 30608-1676/com.example.lg.scoreboardapp W/System.err: at com.example.lg.scoreboardapp.MainActivity$ConnectThread.run(MainActivity.java:336)
有時在我的應用程序中，客戶端意外關閉。 我不知道爲什麼...... 我有三個分水嶺。一臺設備是服務器。其他人是客戶。 它們連接良好，但一個客戶關閉了。其他客戶仍然開放。 請給我解決方案...！ 這是MainActivitity .. 336Line enter code here我的藍牙連接在Android中意外關閉了
while(socket != null){
i++;
Log.d("MAinActivity","-----------------"+i+"-----------------------------");
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
final String str1 = in.readLine(); //<<---Line 336
Log.d("MainActivity","--------------------------------------"+str1+i);
json1 = str1;
parse();
}
這是ConnectThread客戶
private class ConnectThread extends Thread {
private BluetoothSocket socket;
private final BluetoothDevice mmDevice;
public ConnectThread(BluetoothDevice device) {
mmDevice = device;
BluetoothSocket tmp = null;
// Get a BluetoothSocket for a connection with the
// given BluetoothDevice
try {
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) {
Toast.makeText(MainActivity.this, "연결에 실패하였습니다.\n다시 시도하여 주세요", Toast.LENGTH_SHORT).show();
e.printStackTrace();
//mkmsg("Client connection failed: "+e.getMessage().toString()+"\n");
}
socket = tmp;
}
public void run() {
// mkmsg("Client running\n");
// Always cancel discovery because it will slow down a connection
mBluetoothAdapter.cancelDiscovery();
// Make a connection to the BluetoothSocket
try {
// This is a blocking call and will only return on a
// successful connection or an exception
socket.connect();
} catch (IOException e) {
//mkmsg("Connect failed\n");
e.printStackTrace();
try {
socket.close();
socket = null;
} catch (IOException e2) {
//mkmsg("unable to close() socket during connection failure: "+e2.getMessage().toString()+"\n");
socket = null;
e2.printStackTrace();
}
// Start the service over to restart listening mode
}
// If a connection was accepted
if (socket != null) {
//mkmsg("Connection made\n");
//mkmsg("Remote device address: "+socket.getRemoteDevice().getAddress().toString()+"\n");
//Note this is copied from the TCPdemo code.
try {
int i=0;
while(socket != null){
i++;
Log.d("MAinActivity","-----------------"+i+"-----------------------------");
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
final String str1 = in.readLine();
Log.d("MainActivity","--------------------------------------"+str1+i);
json1 = str1;
parse();
}
Log.d("MainActivity_341Line","socket is null.......... check this");
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(),"MainActivity_341Line socket is null.......... check this",Toast.LENGTH_LONG);
}
});
} catch(Exception e) {
//mkmsg("Error happened sending/receiving\n");
e.printStackTrace();
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(),"Error happened sending/receiving\\n",Toast.LENGTH_LONG);
Log.d("MainActivity_341Line","Error happened sending/receiving");
}
});
try {
socket.close();
socket = null;
} catch (IOException e2) {
//mkmsg("unable to close() socket during connection failure: "+e2.getMessage().toString()+"\n");
socket = null;
Log.d("MainActivity_341Line","Error happened "+e2);
e2.printStackTrace();
}
}
} else {
//mkmsg("Made connection, but socket is null\n");
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(),"Made connection, but socket is null\\n",Toast.LENGTH_LONG);
}
});
}
}
public void cancel() {
try {
socket.close();
Toast.makeText(MainActivity.this, "채점기기와의 연결이 끝났습니다", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(MainActivity.this, "채점기기와의 연결이 끝났습니다", Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
}