olcayertas

int pAccessFineLocation =
                ContextCompat.checkSelfPermission(
                        context, Manifest.permission.ACCESS_FINE_LOCATION);
int pAccessCoarseLocation =
        ContextCompat.checkSelfPermission(
                context, Manifest.permission.ACCESS_COARSE_LOCATION);

if (pAccessFineLocation == PackageManager.PERMISSION_GRANTED
        && pAccessCoarseLocation == PackageManager.PERMISSION_GRANTED) {
    //Yay! We have permission!

olcayertas

/**
 * Returns the installed application list on the device.
 * @param activity Activity.
 * @return Returns List<ApplicationInfo>.
 */
public static List<ApplicationInfo> getInstalledApplicationList(Activity activity, boolean printToConsole) {
    final PackageManager pm = activity.getPackageManager();
    List<ApplicationInfo> packages = pm.getInstalledApplications(PackageManager.GET_META_DATA);

    if (!printToConsole) return packages;

olcayertas

private static final double KAABA_LONGITUDE = 39.826228;
private static final double KAABA_LATITUDE = 21.422305;

private double getQiblaAngele(double myLatitude, double myLongitude) {
    double sinMyLoMinusQLo = Math.sin(myLongitude - KAABA_LONGITUDE);
    double cosMyLat = Math.cos(myLatitude);
    double tanQLat = Math.tan(KAABA_LATITUDE);
    double sinMyLat = Math.sin(myLatitude);
    double cosMyLoMinusQlo = Math.cos(myLongitude - KAABA_LONGITUDE);