Android的 - 使用阿尔法的动画渐变闪烁的图像 [英] Android - Blinking image using the Alpha fade animation
问题描述
我一直挣扎在这几天,最后就决定要问。它是如此简单我得失去了一些东西很基本的。
我有一个定义图像的XML页面布局。我有两个阿尼姆XML页面,一个,以改变的α从0到1,而另一个从1到0,以建立一个闪烁效果。因此,alphaAnimation在XML定义的,我只需要调用它。
图片弹出,但没有循环闪烁效果。
公共类闪光灯延伸活动{
//创建动画的名字
动画myFadeInAnimation;
动画myFadeOutAnimation;
/ **第一次创建活动时调用。 * /
@覆盖
公共无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.scanning_view);
//抢的ImageView和加载动画
ImageView的myImageView =(ImageView的)findViewById(R.id.blinkingView01);
动画myFadeInAnimation = AnimationUtils.loadAnimation(空,R.anim.fade_in);
动画myFadeOutAnimation = AnimationUtils.loadAnimation(空,R.anim.fade_out);
//褪色它和淡入出来。
myImageView.startAnimation(myFadeInAnimation);
myImageView.startAnimation(myFadeOutAnimation);
}
}
在动画资源两个XML动画布局:
< XML版本=1.0编码=UTF-8&GT?;
<设置的xmlns:机器人=http://schemas.android.com/apk/res/android>
<阿尔法机器人:fromAlpha =0.0
机器人:toAlpha =1.0
机器人:插=@机器人:动画/ accelerate_interpolator
机器人:时间=50安卓的repeatCount =无限/>
< /集>
和其他的:
< XML版本=1.0编码=UTF-8&GT?;
<设置的xmlns:机器人=http://schemas.android.com/apk/res/android>
<阿尔法机器人:fromAlpha =1.0的Android版本:toAlpha =0.0
机器人:插=@机器人:动画/ accelerate_interpolator
机器人:时间=1000安卓的repeatCount =无限/>
< /集>
为什么不使用安卓REPEATMODE =反向
I've been struggling for a few days on this, finally just decided to ask. It's so simple I've got to be missing something very basic.
I have an XML layout page with an image defined. I have two anim XML pages, one to change alpha from 0 to 1, and the other from 1 to 0 in order to create a "blinking" effect. So the alphaAnimation is defined in XML, I just need to call it.
The image pops up, but there's no looping blinking effect.
public class blinker extends Activity {
//create name of animation
Animation myFadeInAnimation;
Animation myFadeOutAnimation;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.scanning_view);
//grab the imageview and load the animations
ImageView myImageView = (ImageView) findViewById(R.id.blinkingView01);
Animation myFadeInAnimation = AnimationUtils.loadAnimation(null, R.anim.fade_in);
Animation myFadeOutAnimation = AnimationUtils.loadAnimation(null, R.anim.fade_out);
//fade it in, and fade it out.
myImageView.startAnimation(myFadeInAnimation);
myImageView.startAnimation(myFadeOutAnimation);
}
}
Two XML Animation layouts in Anim resource:
<?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="50" android:repeatCount="infinite"/>
</set>
And the other:
<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<alpha android:fromAlpha="1.0" android:toAlpha="0.0"
android:interpolator="@android:anim/accelerate_interpolator"
android:duration="1000" android:repeatCount="infinite"/>
</set>
Why not use android:repeatMode="reverse"
这篇关于Android的 - 使用阿尔法的动画渐变闪烁的图像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!