android蓝牙insecure,Android Bluetooth Connection Secure Insecure-优快云博客

本文探讨了在不同Android API级别下使用蓝牙API进行设备连接的问题。作者最初使用API level 8成功连接蓝牙设备并触发配对请求，但在升级到API level 10后尝试创建安全RfcommSocket时遇到连接被拒绝的异常。通过对比安全和非安全连接的方法，旨在找出问题所在。

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I have been playing around with the bluetooth API for Android 2.2 (API level 8, HTC Desire) and had an app connecting to an embedded Bluetooth device using:

device.createRfcommSocketToServiceRecord(DEV_UUID);

This generated a pairing request as expected, however to streamline the connection process I wanted to avoid the user interaction when pairing so moved to API level 10 (HTC Desire with CyanogenMod 7) so I could use:

device.createInsecureRfcommSocketToServiceRecord(DEV_UUID);

When testing this also works as expected (connecting without prompting the user to pair), however when I try to create the secure RfcommSocket under API level 10 as before with 2.2 I get a connection refused exception...

java.io.IOException: Connection refused

at android.bluetooth.BluetoothSocket.connectNative(Native Method)

at android.bluetooth.BluetoothSocket.connect(BluetoothSocket.java:204)

As far as I can tell this should still work in the same way, prompting the user to pair?

EDIT:

Just tried again using the following code and the outcome is the same (working for insecure but not for secure), I will try and get my hands on a stock 2.3 device to test on.

try {

Method m = dev.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", new Class[] { UUID.class } );

BluetoothSocket bs = (BluetoothSocket)m.invoke(dev, devUUID);

Log.d("TEST", "Method Invoked");

bs.connect();

Log.d("TEST", "Connected to socket");

bs.close();

Log.d("TEST", "Closed Socket");

}