蓝牙连接失败＆QUOT; java.io.IOException异常：读取失败，插座可能会关闭或超时，读RET：-1＆QUOT; [英] Bluetooth Connection failed "java.io.IOException: read failed, socket might closed or timeout, read ret: -1"
问题描述
我想通过我的应用程序安装在Nexus的5。我将设备连接要做出这样的彩虹接触中的机器人。在我的应用程序我的目标是连接到另一台设备通过蓝牙和接触或文件传输设置。 我跟着<一个href="http://stackoverflow.com/questions/18657427/ioexception-read-failed-socket-might-closed-bluetooth-on-android-4-3?rq=1">this问题，但解决方法提到有没有为我工作 这里是我的全部code。 这是从我的应用程序中的code段，我试图让插座和建立连接。
I am trying to connect devices through my app installed in Nexus 5.I want to make an app like rainbow contacts in android. In my app I aim to connect to another device through Bluetooth and transfer set of contacts or files. I followed this question, but the workaround mentioned there is not working for me Here is my full code. This is the code snippet from my application where I have tried to get the socket and make connections.
我打不通配对设备的对话框，但是当我尝试配对，然后引发错误
//to create socket
if (secure) {
bluetoothSocket = device.createRfcommSocketToServiceRecord(uuid);
} else {
bluetoothSocket = device.createInsecureRfcommSocketToServiceRecord(uuid);
}
//connection establishment
try {
bluetoothSocket.connect();
success = true;
break;
} catch (IOException e) {
//try the fallback
try {
Class<?> clazz = tmp.getRemoteDevice().getClass();
Class<?>[] paramTypes = new Class<?>[] {Integer.TYPE};
Method m = clazz.getMethod("createRfcommSocket", paramTypes);
Object[] params = new Object[] {Integer.valueOf(1)};
bluetoothSocket = (BluetoothSocket) m.invoke(tmp.getRemoteDevice(), params);
Thread.sleep(500);
bluetoothSocket.connect();
success = true;
break;
} catch (FallbackException e1) {
Log.w("BT", "Could not initialize FallbackBluetoothSocket classes.", e);
} catch (InterruptedException e1) {
Log.w("BT", e1.getMessage(), e1);
} catch (IOException e1) {
Log.w("BT", "Fallback failed. Cancelling.", e1);
}
}
错误我收到
09-06 13:44:57.247 27860-27860/com.example.gauravdubey.myapplication I/BT﹕ Attempting to connect to Protocol: 00001101-0000-1000-8000-00805f9b34fb
09-06 13:44:57.247 27860-27860/com.example.gauravdubey.myapplication W/BluetoothAdapter﹕ getBluetoothService() called with no BluetoothManagerCallback
09-06 13:44:57.247 27860-27860/com.example.gauravdubey.myapplication D/BluetoothSocket﹕ connect(), SocketState: INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[56]}
09-06 13:44:58.667 27860-27860/com.example.gauravdubey.myapplication W/BluetoothAdapter﹕ getBluetoothService() called with no BluetoothManagerCallback
09-06 13:44:58.667 27860-27860/com.example.gauravdubey.myapplication D/BluetoothSocket﹕ connect(), SocketState: INIT, mPfd: {ParcelFileDescriptor: FileDescriptor[59]}
09-06 13:45:03.267 27860-27860/com.example.gauravdubey.myapplication W/BT﹕ Fallback failed. Cancelling.
java.io.IOException: read failed, socket might closed or timeout, read ret: -1
at android.bluetooth.BluetoothSocket.readAll(BluetoothSocket.java:505)
at android.bluetooth.BluetoothSocket.waitSocketSignal(BluetoothSocket.java:482)
at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:324)
at com.example.gauravdubey.myapplication.BluetoothConnector$FallbackBluetoothSocket.connect(BluetoothConnector.java:198)
at com.example.gauravdubey.myapplication.BluetoothConnector.connect(BluetoothConnector.java:62)
at com.example.gauravdubey.myapplication.ConnectThread.run(ConnectThread.java:101)
at com.example.gauravdubey.myapplication.MainActivity$1.onItemClick(MainActivity.java:288)
at android.widget.AdapterView.performItemClick(AdapterView.java:299)
at android.widget.AbsListView.performItemClick(AbsListView.java:1113)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:2911)
at android.widget.AbsListView$3.run(AbsListView.java:3645)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
09-06 13:45:03.267 27860-27860/com.example.gauravdubey.myapplication V/connectThread﹕ Could not connect to device: B0:D0:9C:8B:A4:47
09-06 13:45:03.267 27860-27860/com.example.gauravdubey.myapplication I/Choreographer﹕ Skipped 361 frames! The application may be doing too much work on its main thread.
因此，我做错了什么？任何帮助，将AP preciated
So what i am doing wrong ? any help would be appreciated
推荐答案
在 BluetoothConnector.java 的构造函数，中的 uuidCandidates 的列表传递。
In the constructor of BluetoothConnector.java, a list of uuidCandidates is passed.
public BluetoothConnector(BluetoothDevice device, boolean secure, BluetoothAdapter adapter,
List<UUID> uuidCandidates)
{
this.device = device;
this.secure = secure;
this.adapter = adapter;
this.uuidCandidates = uuidCandidates;
if (this.uuidCandidates == null || this.uuidCandidates.isEmpty()) {
this.uuidCandidates = new ArrayList<UUID>();
this.uuidCandidates.add(UUID.fromString("fa87c0d0-afac-11de-8a39-0800200c9a66"));
}
}
让你通过它为空？的
如果是的话，尝试调用 device.fetchUuidsWithSdp（）你要连接和接收蓝牙设备 BluetoothDevice.ACTION_UUID 意图在receiver.As这将获取支持用于设备的UUID的列表。
If yes,then try calling device.fetchUuidsWithSdp() for the Bluetooth device you want to connect and receive BluetoothDevice.ACTION_UUID intent in your receiver.As this will fetch a list of uuids supported for the device.
这篇关于蓝牙连接失败＆QUOT; java.io.IOException异常：读取失败，插座可能会关闭或超时，读RET：-1＆QUOT;的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
