Android蓝牙UUID将APP连接到ANDROID
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原文地址: http://stackoverflow.com/questions/21457175/
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Android bluetooth UUID connecting APP to ANDROID
提问by FRR
I'm building an android application that keeps tracks of the Bluetooth connection on a device and triggers an alarm when they get out of range.
我正在构建一个 android 应用程序，它跟踪设备上的蓝牙连接并在它们超出范围时触发警报。
The Android documentation asks for a UUID in order to establish a connection.
Android 文档要求提供 UUID 以建立连接。
An 'uuid' is a Universally Unique Identifier (UUID) standardized 128-bit format for a string ID used to uniquely identify information. It's used to uniquely identify your application's Bluetooth service.
“uuid”是用于唯一标识信息的字符串 ID 的通用唯一标识符 (UUID) 标准化 128 位格式。它用于唯一标识您的应用程序的蓝牙服务。
public ConnectThread(BluetoothDevice device) {
// Use a temporary object that is later assigned to mmSocket,
// because mmSocket is final
BluetoothSocket tmp = null;
mmDevice = device;
// Get a BluetoothSocket to connect with the given BluetoothDevice
try {
// MY_UUID is the app's UUID string, also used by the server code
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) { }
mmSocket = tmp;
}
I am not installing an app on both devices, so I don't get to set my own UUID, I want to use android's instead... but I can't find this in the docs anywhere.
我没有在两台设备上安装应用程序，所以我无法设置自己的 UUID，我想改用 android 的……但我在任何地方的文档中都找不到这个。
Maybe I'm not approaching the problem correctly. Any help will be appreciated. Thanks in advance
也许我没有正确解决问题。任何帮助将不胜感激。提前致谢
回答by Braunster
You can get the UUID from the BluetoothDevice
您可以从 BluetoothDevice 获取 UUID
mmDevice = device;
// Get a BluetoothSocket to connect with the given BluetoothDevice. This code below show how to do it and handle the case that the UUID from the device is not found and trying a default UUID.
// Default UUID
private UUID DEFAULT_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
try {
// Use the UUID of the device that discovered // TODO Maybe need extra device object
if (mmDevice != null)
{
Log.i(TAG, "Device Name: " + mmDevice.getName());
Log.i(TAG, "Device UUID: " + mmDevice.getUuids()[0].getUuid());
tmp = device.createRfcommSocketToServiceRecord(mmDevice.getUuids()[0].getUuid());
}
else Log.d(TAG, "Device is null.");
}
catch (NullPointerException e)
{
Log.d(TAG, " UUID from device is null, Using Default UUID, Device name: " + device.getName());
try {
tmp = device.createRfcommSocketToServiceRecord(DEFAULT_UUID);
} catch (IOException e1) {
e1.printStackTrace();
}
}
catch (IOException e) { }
