因此,我一直在尝试了解有关Android GPS应用程序(特别是离线)的更多信息,并且我注意到LocationManager可能能够解决我的问题。问题是它需要API 23才能运行,我希望出于特定原因而针对API 19设备。有没有其他方法来操纵GPS功能,以便在较低级API上获取没有互联网访问的坐标?
请帮忙!
@Edit:我已经添加了一个示例应用程序(并且工作得很好 - 这里唯一的问题是它需要API 23才能运行)这段代码描述了一个显示十进制的应用程序每5秒坐标一次。
button =(Button)findViewById(R.id.button); textView =(TextView)findViewById(R.id.textView);
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
locationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
textView.append("\n "+ location.getLatitude() + " "+ location.getLongitude());
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
Intent intent = new Intent (Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
};
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{
Manifest.permission.ACCESS_FINE_LOCATION
}, 10 );
}
return;
}
else {
configureButton();
}
} //onCreate
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case 10:
if (grantResults.length>0 && grantResults[0] == PackageManager.PERMISSION_GRANTED)
configureButton();
return;
}
}
private void configureButton() {
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
locationManager.requestLocationUpdates("gps", 5000, 0, locationListener);
}
});
}