Create alpha ObjectAnimator - Android android.animation

Android examples for android.animation:ObjectAnimator

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  3. android.animation
  4. ObjectAnimator

Description

Create alpha ObjectAnimator

Demo Code

/*//www . j  av  a  2s . c o  m
 * Copyright (C) 2016 venshine.cn@gmail.com
 *
 * 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.
 */
//package com.java2s;
import android.animation.Animator;
import android.animation.ObjectAnimator;

import android.view.View;

public class Main {
    /**
     * alpha
     *
     * @param v
     * @param fromAlpha
     * @param toAlpha
     * @param duration
     */
    public static void alpha(View v, float fromAlpha, float toAlpha,
            int duration) {
        alpha(v, fromAlpha, toAlpha, duration, null);
    }

    /**
     * alpha
     *
     * @param v
     * @param fromAlpha
     * @param toAlpha
     * @param duration
     * @param animatorListener
     */
    public static void alpha(View v, float fromAlpha, float toAlpha,
            int duration, Animator.AnimatorListener animatorListener) {
        ObjectAnimator animator = ObjectAnimator.ofFloat(v, View.ALPHA,
                fromAlpha, toAlpha);
        animator.setDuration(duration);
        if (animatorListener != null) {
            animator.addListener(animatorListener);
        }
        animator.start();
    }
}

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