Android 从实现sensoreventlistener的非活动类获取数据
很抱歉这个愚蠢的问题,但我是android新手,我找不到解决方案 简而言之,我有一个带有sensoreventlistener的类,我想在主活动中使用从传感器接收的数据。我试过了,但没有成功 这是我的代码:Android 从实现sensoreventlistener的非活动类获取数据,android,Android,很抱歉这个愚蠢的问题,但我是android新手,我找不到解决方案 简而言之,我有一个带有sensoreventlistener的类,我想在主活动中使用从传感器接收的数据。我试过了,但没有成功 这是我的代码: public class Lis{ SensorManager MagSensorManager; SensorManager ACCSensorManager; Sensor magnetometer; Sensor Accelerometer; Callback cb =null; f
public class Lis{
SensorManager MagSensorManager;
SensorManager ACCSensorManager;
Sensor magnetometer;
Sensor Accelerometer;
Callback cb =null;
float [] magvec =new float[3];
float [] lin =new float[3];
Lis(Context context, Callback cb)
{
MagSensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
ACCSensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
ACCSensorManager.registerListener(listener,Accelerometer, SensorManager.SENSOR_DELAY_GAME);
MagSensorManager.registerListener(listener,magnetometer, SensorManager.SENSOR_DELAY_GAME);
this.cb=cb;
}
SensorEventListener listener = new SensorEventListener() {
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
public void onSensorChanged(SensorEvent event) {
switch (event.sensor.getType())
{
case Sensor.TYPE_MAGNETIC_FIELD:
magvec = event.values.clone();
break;
case Sensor.TYPE_LINEAR_ACCELERATION:
lin = event.values.clone();
break;
}
SensorManager.getRotationMatrix(Ri, I, lin, magnetic);
SensorManager.getOrientation(Ri, orientat);
orientat[0] = (float) Math.toDegrees(orientat[0]);
cb.azvalue(orientat[0]);
}
}
};
public interface Callback {
void azvalue(float azim);
}
}
公共类MainActivity扩展活动实现Lis.Callback{
TextView tbX;
Lis listen;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tbX = (TextView)findViewById(R.id.textView1);
listen=new Lis(this,this);
}
@Override
protected void onPause() {
super.onPause();
}
public void azvalue(float azim)
{
tbX.setText("azimuth"+azim);
}
}
我错在哪里?如果我尝试运行apk,我只从tbX textview获得默认文本,而不是“方位角”+值
提前谢谢
SensorManager MagSensorManager;
SensorManager ACCSensorManager;
您只需要一个传感器管理器
SensorManager mSensorManager;
在构造函数中
Lis(Context context, Callback cb)
{
mSensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
// You need to initialize these value, otherwise you pass in null
// and onSensorChanged would not be called as in your case.
magnetometer = sensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
Accelerometer = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
mSensorManager.registerListener(listener,Accelerometer, SensorManager.SENSOR_DELAY_GAME);
mSensorManager.registerListener(listener,magnetometer, SensorManager.SENSOR_DELAY_GAME);
this.cb=cb;
}
为此,请使用处理程序