MyUtils.java

package net.zahrauniversity.zahrauniversity.App;

import android.app.Activity;
import android.graphics.Bitmap;
import android.media.MediaMetadataRetriever;
import android.os.Build;
import android.support.design.widget.Snackbar;
import android.text.TextUtils;
import android.view.View;
import android.view.inputmethod.InputMethodManager;

import java.util.HashMap;

public class MyUtils {

    public final static boolean isValidEmail(CharSequence target) {
        return !TextUtils.isEmpty(target) && android.util.Patterns.EMAIL_ADDRESS.matcher(target).matches();
    }
    public final static void showSnackbar(View view, String message) {
        Snackbar.make(view, message, Snackbar.LENGTH_LONG).show();
    }
    public static void hideKeyboard(Activity activity) {
        InputMethodManager imm = (InputMethodManager) activity.getSystemService(Activity.INPUT_METHOD_SERVICE);
        //Find the currently focused view, so we can grab the correct window token from it.
        View view = activity.getCurrentFocus();
        //If no view currently has focus, create a new one, just so we can grab a window token from it
        if (view == null) {
            view = new View(activity);
        }
        imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
    }





}