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P. 457
}
if(location == null || l.getAccuracy() < location.getAccuracy()){
location = l;
}
}
return location;
}
}
private double distance(double lat1, double lon1, double lat2, double lon2, String unit) {
double theta = lon1 - lon2;
double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.
cos(deg2rad(lat2)) * Math.cos(deg2rad(theta));
dist = Math.acos(dist);
dist = rad2deg(dist);
dist = dist * 60 * 1.1515;
if (unit == "kilometer") {
dist = dist * 1.609344;
} else if (unit == "meter") {
dist = dist * 1609.344;
}
return (dist);
}
// This function converts decimal degrees to radians
private double deg2rad(double deg) {
return (deg * Math.PI / 180.0);
}
// This function converts radians to decimal degrees
private double rad2deg(double rad) {
return (rad * 180 / Math.PI);
}
}
Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case TOAST_MESSAGE:
Toast.makeText(getApplicationContext(), (String) msg.obj, Toast.LENGTH_SHORT).show();
break;
case Image_driving:
imageView.setImageResource(R.drawable.image_driving);
break;
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