Locates a Toolbar with a particular view ID in an AppCompatActivity 's layout and if found, uses it as the activity's action bar. - Android User Interface

Android examples for User Interface:Toolbar

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Description

Locates a Toolbar with a particular view ID in an AppCompatActivity 's layout and if found, uses it as the activity's action bar.

Demo Code

/*//from w  ww  . j  a va  2 s  .c o  m
 * Copyright (C) 2015 Randomly Typing LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import android.support.annotation.IdRes;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;

public class Main{
    /**
     * Locates a {@link Toolbar} with a particular view ID in an {@link AppCompatActivity}'s layout
     * and if found, uses it as the activity's action bar.
     *
     * @param activity  An activity.
     * @param toolbarId The view ID of the {@link Toolbar} to use as {@code activity}'s app bar.
     *
     * @return {@code true} if {@code activity} has a {@link Toolbar} with {@code toolbarId} as its
     * view ID; {@code false} otherwise.
     */
    public static boolean setToolbarAppBar(AppCompatActivity activity,
            @IdRes int toolbarId) {
        final Toolbar toolbar = (Toolbar) activity.findViewById(toolbarId);
        if (toolbar == null) {
            return false;
        }
        activity.setSupportActionBar(toolbar);
        return true;
    }
}

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