用代码实现:手表蓝牙消息同步
时间: 2024-02-17 22:01:40 浏览: 35
实现手表蓝牙消息同步需要使用到手机和手表的蓝牙通信协议以及相应的解析算法,这里我提供一个简单的 Android 平台的代码示例,仅供参考:
在手机端:
1. 首先需要进行蓝牙设备的扫描和连接:
```java
private BluetoothAdapter mBluetoothAdapter;
private BluetoothDevice mBluetoothDevice;
private BluetoothSocket mBluetoothSocket;
// 搜索蓝牙设备
private void searchDevices() {
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter != null && !mBluetoothAdapter.isEnabled()) {
// 蓝牙未开启,需要请求用户开启蓝牙
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
return;
}
// 开始搜索蓝牙设备
mBluetoothAdapter.startDiscovery();
// 注册广播接收器,监听搜索到的蓝牙设备
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, filter);
}
// 广播接收器,用于监听搜索到的蓝牙设备
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (device.getName().equals("手表名称")) {
// 找到需要连接的手表设备,停止搜索
mBluetoothAdapter.cancelDiscovery();
mBluetoothDevice = device;
// 开始连接手表设备
new ConnectThread(mBluetoothDevice).start();
}
}
}
};
// 连接蓝牙设备的线程
private class ConnectThread extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
public ConnectThread(BluetoothDevice device) {
mmDevice = device;
BluetoothSocket tmp = null;
try {
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) {
e.printStackTrace();
}
mmSocket = tmp;
}
public void run() {
mBluetoothAdapter.cancelDiscovery();
try {
mmSocket.connect();
mBluetoothSocket = mmSocket;
} catch (IOException connectException) {
try {
mmSocket.close();
} catch (IOException closeException) {
closeException.printStackTrace();
}
return;
}
}
}
```
2. 通过蓝牙通信协议将待发送的消息传输到手表端:
```java
// 将消息发送到手表端
private void sendMessageToWatch(String message) {
if (mBluetoothSocket != null && mBluetoothSocket.isConnected()) {
try {
OutputStream outputStream = mBluetoothSocket.getOutputStream();
outputStream.write(message.getBytes());
outputStream.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
}
```
在手表端:
1. 首先需要进行蓝牙设备的扫描和连接:
```java
private BluetoothAdapter mBluetoothAdapter;
private BluetoothDevice mBluetoothDevice;
private BluetoothSocket mBluetoothSocket;
// 搜索蓝牙设备
private void searchDevices() {
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter != null && !mBluetoothAdapter.isEnabled()) {
// 蓝牙未开启,需要请求用户开启蓝牙
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
return;
}
// 开始搜索蓝牙设备
mBluetoothAdapter.startDiscovery();
// 注册广播接收器,监听搜索到的蓝牙设备
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, filter);
}
// 广播接收器,用于监听搜索到的蓝牙设备
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (device.getName().equals("手机名称")) {
// 找到需要连接的手机设备,停止搜索
mBluetoothAdapter.cancelDiscovery();
mBluetoothDevice = device;
// 开始连接手机设备
new ConnectThread(mBluetoothDevice).start();
}
}
}
};
// 连接蓝牙设备的线程
private class ConnectThread extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
public ConnectThread(BluetoothDevice device) {
mmDevice = device;
BluetoothSocket tmp = null;
try {
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) {
e.printStackTrace();
}
mmSocket = tmp;
}
public void run() {
mBluetoothAdapter.cancelDiscovery();
try {
mmSocket.connect();
mBluetoothSocket = mmSocket;
// 连接成功后开始监听消息
new ReceiveThread().start();
} catch (IOException connectException) {
try {
mmSocket.close();
} catch (IOException closeException) {
closeException.printStackTrace();
}
return;
}
}
}
```
2. 通过相应的解析算法将接收到的消息进行解析和渲染:
```java
// 监听消息的线程
private class ReceiveThread extends Thread {
public void run() {
while (mBluetoothSocket.isConnected()) {
try {
InputStream inputStream = mBluetoothSocket.getInputStream();
byte[] buffer = new byte[1024];
int len = inputStream.read(buffer);
if (len > 0) {
// 解析接收到的消息
String message = new String(buffer, 0, len);
// 在手表屏幕上显示消息内容
showMessageOnWatch(message);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
// 在手表屏幕上显示消息内容
private void showMessageOnWatch(String message) {
// TODO:根据手表屏幕的大小和分辨率将消息渲染到屏幕上
}
```
以上是一个简单的 Android 平台的代码示例,实现了手表蓝牙消息同步的功能。
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