android蓝牙配对java代码
时间: 2023-07-26 18:03:48 浏览: 166
以下是在Android中进行蓝牙配对的Java代码示例:
```java
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress); // 设备地址
Method createBondMethod = device.getClass().getMethod("createBond");
createBondMethod.invoke(device);
```
这段代码将获取默认的蓝牙适配器并获取远程设备对象。然后,使用Java反射调用createBond()方法,该方法将启动配对过程。请注意,此方法可能会引发异常,因此需要适当的异常处理代码。
相关问题
android蓝牙指定配对java代码
以下是一个简单的 Java 代码示例,演示了如何在 Android 应用程序中进行蓝牙指定配对:
```
private BluetoothAdapter mBluetoothAdapter;
private BluetoothDevice mBluetoothDevice;
// 搜索可用的蓝牙设备
private void searchForDevices() {
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
mBluetoothAdapter.startDiscovery();
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, filter);
}
// 找到蓝牙设备后进行配对操作
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// 获取扫描到的设备信息
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
String deviceName = device.getName();
String deviceHardwareAddress = device.getAddress();
// 判断是否找到需要配对的设备
if (deviceName.equals("MyDeviceName")) {
mBluetoothDevice = device;
// 进行配对操作
if (mBluetoothDevice.getBondState() != BluetoothDevice.BOND_BONDED) {
try {
Method method = mBluetoothDevice.getClass().getMethod("createBond", (Class[]) null);
method.invoke(mBluetoothDevice, (Object[]) null);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
};
```
以上代码中,我们首先启用了 BluetoothAdapter 并开始搜索可用的蓝牙设备。在 BroadcastReceiver 中,我们判断扫描到的设备是否为我们想要的设备,如果是,就使用 BluetoothDevice.createBond() 方法进行配对操作。需要注意的是,这里我们使用了反射来调用 BluetoothDevice.createBond() 方法,因为该方法是被保护的,不能直接调用。
android蓝牙指定配对完整java代码包括广播
以下是一个完整的 Java 代码示例,包括了广播接收器和蓝牙指定配对的操作:
```
public class MainActivity extends AppCompatActivity {
private static final String TAG = "BluetoothActivity";
private BluetoothAdapter mBluetoothAdapter;
private BluetoothDevice mBluetoothDevice;
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
String deviceName = device.getName();
String deviceHardwareAddress = device.getAddress();
Log.d(TAG, "Found Bluetooth device: " + deviceName + " (" + deviceHardwareAddress + ")");
if (deviceName.equals("MyDeviceName")) {
Log.d(TAG, "Target device found, attempting to pair...");
mBluetoothDevice = device;
if (mBluetoothDevice.getBondState() != BluetoothDevice.BOND_BONDED) {
try {
Method method = mBluetoothDevice.getClass().getMethod("createBond", (Class[]) null);
method.invoke(mBluetoothDevice, (Object[]) null);
Log.d(TAG, "Pairing successful.");
} catch (Exception e) {
e.printStackTrace();
}
} else {
Log.d(TAG, "Device already paired.");
}
}
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 开启 Bluetooth Adapter
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter == null) {
Log.e(TAG, "Device does not support Bluetooth.");
return;
}
// 检查 Bluetooth 是否已启用
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 1);
}
// 扫描可用的蓝牙设备
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, filter);
mBluetoothAdapter.startDiscovery();
}
@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(mReceiver);
}
}
```
以上代码中,我们首先在 onCreate() 方法中启用了 BluetoothAdapter,并检查 Bluetooth 是否已启用。然后,我们注册了一个广播接收器来接收 ACTION_FOUND 事件,该事件在发现新的蓝牙设备时发生。在广播接收器中,我们判断扫描到的设备是否为我们想要的设备,如果是,就使用 BluetoothDevice.createBond() 方法进行配对操作。需要注意的是,这里我们使用了反射来调用 BluetoothDevice.createBond() 方法,因为该方法是被保护的,不能直接调用。最后,在 onDestroy() 方法中,我们取消了广播接收器的注册。
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