Fades the specified view in slowly. - Android User Interface

Android examples for User Interface:View Fade

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Description

Fades the specified view in slowly.

Demo Code


//package com.java2s;

import android.view.View;

import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;

import android.view.animation.AnimationSet;
import android.view.animation.OvershootInterpolator;
import android.view.animation.ScaleAnimation;

public class Main {
    /**//from w  ww .java2 s  . c  o  m
     * Fades the specified view in slowly.
     * 
     * @param v
     *            the view to fade in
     */
    public static void progressfadeIn(View v) {
        showView(v);

        AnimationSet set = new AnimationSet(false);

        ScaleAnimation scaleIn = new ScaleAnimation(0.1f, 1, 0.1f, 1,
                Animation.RELATIVE_TO_SELF, 0.5f,
                Animation.RELATIVE_TO_SELF, 0.5f);
        scaleIn.setFillAfter(true);
        scaleIn.setStartOffset(500);
        scaleIn.setDuration(500);
        scaleIn.setInterpolator(new OvershootInterpolator());

        AlphaAnimation fadeIn = new AlphaAnimation(0F, 1F);
        fadeIn.setDuration(2000);
        fadeIn.setFillAfter(false);

        set.addAnimation(scaleIn);
        set.addAnimation(fadeIn);
        v.startAnimation(set);

    }

    /**
     * Shows the specified view if invisible or gone.
     * 
     * @param v
     *            the view to show
     */
    public static void showView(View v) {
        if (v.getVisibility() == View.INVISIBLE
                || v.getVisibility() == View.GONE) {
            v.setVisibility(View.VISIBLE);
        }
    }
}

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