Helpful utility class

Utils.java

package josiassena.humbug;

import android.Manifest;
import android.app.Activity;
import android.app.NotificationManager;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.location.LocationManager;
import android.net.Uri;
import android.os.Build;
import android.os.PowerManager;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AlertDialog;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Toast;

/**
 * File created by josiassena on 12/19/16.
 */
public final class Utils {

    private static final String TAG = Utils.class.getSimpleName();

    private static final String CALL_PHONE_PERMISSION_EXCEPTION_TEXT =
            "CALL_PHONE permission has not been granted to the application. Please add " +
                    "<uses-permission android:name=\"android.permission.CALL_PHONE\" /> " +
                    "to your AndroidManifest.xml.";

    private Utils() {
        // do nothing
    }

    public static void copyTextToClipboard(@NonNull final Context context,
                                           @NonNull final String label,
                                           @NonNull final String text) {
        final ClipData clip = ClipData.newPlainText(label, text);
        final ClipboardManager clipboard = (ClipboardManager) context
                .getSystemService(Context.CLIPBOARD_SERVICE);

        clipboard.setPrimaryClip(clip);

        Toast.makeText(context, "Message copied to clipboard", Toast.LENGTH_SHORT).show();
    }

    public static void dismissNotification(final Context context, int notificationId) {
        final NotificationManager notificationManager = (NotificationManager) context
                .getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.cancel(notificationId);
    }

    public static void showView(@NonNull final View view) {
        if (view != null) {
            view.setVisibility(View.VISIBLE);
        } else {
            Log.e(TAG, "hideView: the view was null. Cannot perform this action.");
        }
    }

    public static void hideView(@NonNull final View view) {
        if (view != null) {
            view.setVisibility(View.GONE);
        } else {
            Log.e(TAG, "hideView: the view was null. Cannot perform this action.");
        }
    }

    public static void hideSoftKeyboard(@NonNull Activity activity) {
        final InputMethodManager inputMethodManager = (InputMethodManager) activity
                .getSystemService(Activity.INPUT_METHOD_SERVICE);

        final View currentFocus = activity.getCurrentFocus();

        if (currentFocus != null) {
            inputMethodManager.hideSoftInputFromWindow(currentFocus.getWindowToken(), 0);
        }
    }

    public static void hideSoftKeyboard(@NonNull final Context context, @NonNull final View view) {
        final InputMethodManager inputMethodManager = (InputMethodManager) context
                .getSystemService(Context.INPUT_METHOD_SERVICE);

        inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
    }

    public static void wakeUpPhone(@NonNull Context context, @NonNull String tag) {
        final PowerManager powerManager = (PowerManager) context
                .getSystemService(Context.POWER_SERVICE);

        final PowerManager.WakeLock wakeLock = powerManager.newWakeLock((
                PowerManager.SCREEN_BRIGHT_WAKE_LOCK |
                        PowerManager.FULL_WAKE_LOCK |
                        PowerManager.ACQUIRE_CAUSES_WAKEUP), tag);

        wakeLock.acquire();
    }

    public static String getMyPhoneNumber(@NonNull Context context) {
        final TelephonyManager telephonyManager = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        return telephonyManager.getLine1Number();
    }

    public static String getDeviceName() {
        return Build.MODEL;
    }

    public static String getDeviceId() {
        return Build.SERIAL;
    }

    public static void callPhone(@NonNull final Context context,
                                 @NonNull final String phoneNumber) {

        final Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + phoneNumber));
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        if (ActivityCompat.checkSelfPermission(context, Manifest.permission.CALL_PHONE) ==
                PackageManager.PERMISSION_GRANTED) {
            context.startActivity(intent);
        } else {
            Log.e(TAG, "callPhone: " + CALL_PHONE_PERMISSION_EXCEPTION_TEXT);
        }
    }

    public static boolean isGpsEnabled(@NonNull final Context context) {
        final LocationManager locationManager = (LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE);

        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
    }

    public static void goToGpsSettings(@NonNull final Context context) {
        final Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);

        context.startActivity(intent);
    }

    public static void goToApplicationSettings(@NonNull final Context context) {
        final Uri uri = Uri.fromParts("package", context.getPackageName(), null);
        final Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, uri);

        context.startActivity(intent);
    }

    public static boolean isTextContainsSpecialCharsOrNumbers(@NonNull String text) {
        return !text.matches("^[a-z A-Z]+$");
    }

    public static String removeWhiteSpacesFromString(@NonNull String text) {
        return text.replaceAll("\\s+", "");
    }

    public static void unlockScreenOrientation(@NonNull Activity activity) {
        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
    }

    public static void lockScreenOrientation(@NonNull Activity activity) {
        final int currentOrientation = activity.getResources().getConfiguration().orientation;

        if (currentOrientation == Configuration.ORIENTATION_PORTRAIT) {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        } else {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }
    }

    public static void showNormalOKAlertDialog(@NonNull final Context context,
                                               @NonNull final String dialogTitle,
                                               @NonNull final String dialogBody) {
        new AlertDialog.Builder(context)
                .setCancelable(false)
                .setTitle(dialogTitle)
                .setMessage(dialogBody)
                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(final DialogInterface dialog, final int which) {
                        dialog.dismiss();
                    }
                }).show();
    }

}