android studio蓝牙接收数据并显示
时间: 2023-04-26 09:02:06 浏览: 471
要在Android Studio中接收蓝牙数据并显示,您需要执行以下步骤:
1. 在AndroidManifest.xml文件中添加蓝牙权限:
```
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
```
2. 在您的活动中实例化BluetoothAdapter:
```
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
```
3. 检查蓝牙是否已启用:
```
if (bluetoothAdapter == null || !bluetoothAdapter.isEnabled()) {
// 蓝牙未启用
} else {
// 蓝牙已启用
}
```
4. 搜索可用的蓝牙设备:
```
bluetoothAdapter.startDiscovery();
```
5. 找到您要连接的设备并获取其BluetoothDevice对象:
```
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress);
```
6. 使用BluetoothSocket连接到设备:
```
BluetoothSocket socket = device.createRfcommSocketToServiceRecord(uuid);
socket.connect();
```
7. 从BluetoothSocket中获取InputStream并读取数据:
```
InputStream inputStream = socket.getInputStream();
byte[] buffer = new byte[1024];
int bytes;
while ((bytes = inputStream.read(buffer)) > ) {
String message = new String(buffer, , bytes);
// 在UI线程中更新UI
runOnUiThread(() -> textView.setText(message));
}
```
请注意,这只是一个简单的示例,您需要根据您的需求进行修改和调整。
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