Utilities

public class Utilities {

    public void showToast(Context context, String message) {
        Toast toast = Toast.makeText(context, message, Toast.LENGTH_LONG);
        View toastView = toast.getView(); // This'll return the default View of the Toast.        /* And now you can get the TextView of the default View of the Toast. */        TextView toastMessage = (TextView) toastView.findViewById(android.R.id.message);
        toastMessage.setTextSize(25);
        toastMessage.setTextColor(Color.WHITE);
        toastMessage.setGravity(Gravity.CENTER);
        toastMessage.setCompoundDrawablePadding(16);
        toastView.setBackgroundColor(Color.CYAN);
        toast.show();
    }

    public void hideSoftKeyboard(Context mContext, View view) {
        if (view != null) {
            InputMethodManager inputMethodManager = (InputMethodManager) mContext.getSystemService(INPUT_METHOD_SERVICE);
            inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
        }
    }

    /**     * Shows the soft keyboard     */    
    public void showSoftKeyboard(Context mContext, View view) {
        if (view != null) {
            InputMethodManager inputMethodManager = (InputMethodManager) mContext.getSystemService(INPUT_METHOD_SERVICE);
            view.requestFocus();
            inputMethodManager.showSoftInput(view, 0);
        }
    }

public static void showAlertDialog(Context context, String message) {

    AlertDialog.Builder builder = new AlertDialog.Builder(context);
    builder.setTitle("Title");
    builder.setMessage(message);
    builder.setCancelable(false);

    builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {

        @Override        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
        }
    });
    builder.show();

}

public void showToastColor(Context context, String message) {
    Toast toast = Toast.makeText(context, message, Toast.LENGTH_LONG);
    View toastView = toast.getView(); 
    TextView toastMessage = (TextView) toastView.findViewById(android.R.id.message);
    toastMessage.setTextSize(25);
    toastMessage.setTextColor(Color.WHITE);
    toastMessage.setGravity(Gravity.CENTER);
    toastMessage.setCompoundDrawablePadding(16);
    toastView.setBackgroundColor(Color.CYAN);
    toast.show();
}

public static String ordinal(int i) {
    String[] sufixes = new String[] { "th", "st", "nd", "rd", "th", "th", "th", "th", "th", "th" };
    switch (i % 100) {
        case 11:
        case 12:
        case 13:
            return i + "th";
        default:
            return i + sufixes[i % 10];

    }
}


public static String getCertificateSHA1Fingerprint(Context context) {
    PackageManager pm = context.getPackageManager();
    String packageName = context.getPackageName();
    int flags = PackageManager.GET_SIGNATURES;
    PackageInfo packageInfo = null;
    try {
        packageInfo = pm.getPackageInfo(packageName, flags);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    Signature[] signatures = packageInfo.signatures;
    byte[] cert = signatures[0].toByteArray();
    InputStream input = new ByteArrayInputStream(cert);
    CertificateFactory cf = null;
    try {
        cf = CertificateFactory.getInstance("X509");
    } catch (CertificateException e) {
        e.printStackTrace();
    }
    X509Certificate c = null;
    try {
        c = (X509Certificate) cf.generateCertificate(input);
    } catch (CertificateException e) {
        e.printStackTrace();
    }
    String hexString = null;
    try {
        MessageDigest md = MessageDigest.getInstance("SHA1");
        byte[] publicKey = md.digest(c.getEncoded());
        hexString = byte2HexFormatted(publicKey);
    } catch (NoSuchAlgorithmException e1) {
        e1.printStackTrace();
    } catch (CertificateEncodingException e) {
        e.printStackTrace();
    }
    return hexString;
}

public static String byte2HexFormatted(byte[] arr) {
    StringBuilder str = new StringBuilder(arr.length * 2);
    for (int i = 0; i < arr.length; i++) {
        String h = Integer.toHexString(arr[i]);
        int l = h.length();
        if (l == 1) h = "0" + h;
        if (l > 2) h = h.substring(l - 2, l);
        str.append(h.toUpperCase());
        if (i < (arr.length - 1)) str.append(':');
    }
    return str.toString();
}

}