fade In View Animation - Android Animation

Android examples for Animation:Fade Animation

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Description

fade In View Animation

Demo Code

/*/*  w  ww . ja  va2s  .  co  m*/
 * Copyright (C) 2009 The Android Open Source Project
 *
 * 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.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;

public class Main {
  public static void fadeIn(View view, float startAlpha, float endAlpha, long duration) {
    if (view.getVisibility() == View.VISIBLE)
      return;

    view.setVisibility(View.VISIBLE);
    Animation animation = new AlphaAnimation(startAlpha, endAlpha);
    animation.setDuration(duration);
    view.startAnimation(animation);
  }

  public static void fadeIn(View view) {
    fadeIn(view, 0F, 1F, 400);

    // We disabled the button in fadeOut(), so enable it here.
    view.setEnabled(true);
  }
}

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