如何使流畅的帧动画的android？ [英] How to make smooth frame animation in android?

问题描述

我做了一个帧动画。但图像之间的transitition是难看。如何申请交叉淡入淡出的效果呢？

I made a frame animation. But the transitition between images is bad looking. How can I apply a crossfade effect to it ?

在使用 TransitionDrawable 我得到正确的结果，但一个执行后停止。

When using TransitionDrawable i get the proper result but it stops after one execution.

任何人有一个想法如何解决这个问题？

Any one has an idea how to resolve it?

public void startAnimation() {
    if (logoAnimation != null) {
        if (logoAnimation.isRunning()) {
            logoAnimation.stop();
        }
        logoAnimation.start();
    }
}

private int setLogoAnimation(int animationID, int targetID) {
    imageView = (ImageView) window.findViewById(targetID);
    imageView.setImageResource(animationID);
    logoAnimation = (AnimationDrawable) imageView.getDrawable();

    if (imageView != null && logoAnimation != null) {
        return 1;
    } else {
        return 0;
    }
}

比我只需object.startAnimation运行它（）;我的作品，但动画是丑陋，我需要它是光滑的。

Than I simply run it by object.startAnimation(); I works, but the animation is ugly and I need it to be smooth.

推荐答案

如果您想要两张图片之间进行交叉衰减，为什么不使用一个AlphaAnimation这将改变两个视图的透明度，并会创建所需的效果。

If you want to crossfade between two pictures, why not use an AlphaAnimation which will alter the transparency of two views and will create the effect that you require.

创建两个动画：

RES /动画/ fadeout.xml

res/anim/fadeout.xml

<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_interpolator"
    android:fromAlpha="1.0" android:toAlpha="0.0"
    android:duration="@android:integer/config_mediumAnimTime" />

RES /动画/ fadein.xml

res/anim/fadein.xml

<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_interpolator"
    android:fromAlpha="0.0" android:toAlpha="1.0"
    android:duration="@android:integer/config_mediumAnimTime" />

，然后覆盖活动之间的默认过渡：

and then override the default transition between activities:

startActivity( new Intent( this, SecondActivity.class ) );
overridePendingTransition( R.anim.fadeout, R.anim.fadein );

也可以应用于动画特定的部件：

or you can apply animations to specific widgets:

Animation animation = AnimationUtils.loadAnimation( this, R.anim.fadeout );
image1.startAnimation( animation );

我目前在一系列的动画在我的博客这可能会给您一些进一步的信息。

I am currently in the middle of a series on animation on my blog which may give you some further information.

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