用Java Sensor API获取传感器数据的具体代码
时间: 2024-05-04 07:16:28 浏览: 113
安卓手机传感器数据,安卓手机传感器数据读取,Java
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以下是使用Java Sensor API获取加速度传感器数据的示例代码:
```
import javax.microedition.sensor.*;
import javax.microedition.midlet.*;
public class SensorMIDlet extends MIDlet implements SensorListener {
private SensorManager sensorMgr;
private String accelSensorUrl;
protected void startApp() throws MIDletStateChangeException {
// 获取传感器管理器实例
sensorMgr = SensorManager.getInstance();
// 获取加速度传感器的URL
SensorInfo[] sensorInfos = sensorMgr.findSensors(null, null);
for (int i = 0; i < sensorInfos.length; i++) {
String technology = sensorInfos[i].getTechnology();
if (technology.equals(SensorInfo.TECH_ACCELEROMETER)) {
accelSensorUrl = sensorInfos[i].getUrl();
break;
}
}
if (accelSensorUrl != null) {
try {
// 打开传感器并注册监听器
SensorConnection sensorConn = (SensorConnection) Connector.open(accelSensorUrl);
SensorInfo sensorInfo = sensorConn.getSensorInfo();
System.out.println("Sensor: " + sensorInfo.getName());
SensorChannel sensorChannel = sensorConn.openChannel();
sensorChannel.setNominalRate(10000);
sensorChannel.setDataType(SensorConstants.DATA_TYPE_DOUBLE);
sensorChannel.setBufferSize(1);
sensorChannel.setDataListener(this, 1);
} catch (IOException e) {
System.out.println("Exception opening sensor: " + e.getMessage());
} catch (SensorException e) {
System.out.println("Exception configuring sensor: " + e.getMessage());
}
} else {
System.out.println("No accelerometer sensor available.");
}
}
protected void pauseApp() {
sensorMgr.quit();
}
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
sensorMgr.quit();
}
public void sensorDataReceived(SensorConnection sensor, Data[] data, boolean isDataLost) {
if (!isDataLost) {
Double[] values = (Double[]) data[0].getValues();
double x = values[0].doubleValue();
double y = values[1].doubleValue();
double z = values[2].doubleValue();
// 处理传感器数据
// ...
System.out.println("Accelerometer data: x=" + x + ", y=" + y + ", z=" + z);
}
}
public void stop() throws MIDletStateChangeException {
pauseApp();
destroyApp(true);
}
}
```
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