Keyboards.java

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 NBCO Yandex.Money LLC
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package ru.yandex.money.android.utils;

import android.app.Activity;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.view.View;
import android.view.inputmethod.InputMethodManager;

/**
 * Convenience methods to work with soft keyboards.
 */
public final class Keyboards {

    private Keyboards() {
    }

    /**
     * Hides soft keyboard.
     *
     * @param activity activity
     */
    public static void hideKeyboard(@Nullable Activity activity) {
        if (activity == null || activity.isFinishing()) {
            return;
        }
        View view = activity.getWindow().getCurrentFocus();
        if (view != null) {
            InputMethodManager manager = getInputMethodManager(activity);
            if (manager != null) {
                manager.hideSoftInputFromWindow(view.getWindowToken(), 0);
            }
        }
    }

    /**
     * Shows soft keyboards for a view.
     *
     * @param activity activity
     * @param view view
     */
    public static void showKeyboard(@Nullable Activity activity, @NonNull View view) {
        if (activity == null || activity.isFinishing()) {
            return;
        }
        InputMethodManager manager = getInputMethodManager(activity);
        if (manager != null) {
            manager.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
        }
    }

    @Nullable
    private static InputMethodManager getInputMethodManager(@NonNull Context context) {
        return (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
    }
}