ViewUtils.java

package com.gojira.util;

import android.content.Context;
import android.os.Build;
import android.support.annotation.NonNull;
import android.view.View;
import android.view.ViewTreeObserver;
import android.view.inputmethod.InputMethodManager;

/**
 * @author Stratos Theodorou
 * @version 1.0
 * @since 15/05/2015
 */
public class ViewUtils {

    public static void addOnGlobalLayoutListener(final View view, final Runnable runnable) {
        ViewTreeObserver vto = view.getViewTreeObserver();
        vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @SuppressWarnings("deprecation")
            @Override
            public void onGlobalLayout() {
                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
                    view.getViewTreeObserver().removeGlobalOnLayoutListener(this);
                } else {
                    view.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                }
                runnable.run();
            }
        });
    }

    public static void hideKeyboard(@NonNull View view) {
        InputMethodManager imm = (InputMethodManager) view.getContext()
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
    }

}