如何做一个图像的淡入一个Android活动屏幕上? [英] How to do a fadein of an image on an Android Activity screen?
问题描述
我想和做渐进和持续的淡入从苍白单调乌贼最终全彩显示屏在Android活动屏幕上的照片。我知道怎么做了一个Java图片/ BufferedImage的图形对象,但不幸的是我什么都不知道为Android编程环境。谁能帮忙?
I'd like to display a photo on an Android Activity screen with doing gradual and continual fade-in from pale monotone sepia to the final full color. I know how to do it on a Java Image/BufferedImage for the Graphic object but unfortunately I know nothing for the Android programming environment. Could anyone help?
推荐答案
喜弘,你可以在褪色做到这一点:
Hi Hiroshi you can do this for the fade in:
ImageView myImageView= (ImageView)findViewById(R.id.myImageView);
Animation myFadeInAnimation = AnimationUtils.loadAnimation(this, R.anim.fadein);
myImageView.startAnimation(myFadeInAnimation); //Set animation to your ImageView
和你的资源内\动画\文件夹中的动画文件fadein.xml
and inside your res\anim\ folder the animation file fadein.xml
<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha
android:fromAlpha="0.0"
android:toAlpha="1.0"
android:interpolator="@android:anim/accelerate_interpolator"
android:duration="3000"/>
</set>
但逐渐淡入从褐色到全彩色,你必须使用<一个href="http://developer.android.com/intl/fr/reference/android/graphics/drawable/TransitionDrawable.html">TransitionDrawable
这篇关于如何做一个图像的淡入一个Android活动屏幕上?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!