我正在尝试动画片段之间的过渡。我从下面得到了答案 Android Fragments和动画

FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.setCustomAnimations(R.anim.slide_in_left, R.anim.slide_out_right);

DetailsFragment newFragment = DetailsFragment.newInstance();

ft.replace(R.id.details_fragment_container, newFragment, "detailFragment");

// Start the animated transition.
ft.commit();

我的r。anm。slide_in_left

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
        <translate android:fromXDelta="50%p" android:toXDelta="0"
            android:duration="@android:integer/config_mediumAnimTime"/>
       <alpha android:fromAlpha="0.0" android:toAlpha="1.0"
            android:duration="@android:integer/config_mediumAnimTime" />
</set>

但当我试着这样做时,它就出现了

02-08 16:27:37.961: ERROR/AndroidRuntime(1717): FATAL EXCEPTION: main
02-08 16:27:37.961: ERROR/AndroidRuntime(1717): java.lang.RuntimeException: Unknown animator name: translate
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.animation.AnimatorInflater.createAnimatorFromXml(AnimatorInflater.java:129)
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.animation.AnimatorInflater.createAnimatorFromXml(AnimatorInflater.java:126)
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.animation.AnimatorInflater.createAnimatorFromXml(AnimatorInflater.java:93)
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.animation.AnimatorInflater.loadAnimator(AnimatorInflater.java:72)
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.app.FragmentManagerImpl.loadAnimator(FragmentManager.java:621)
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:733)
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:919)
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.app.BackStackRecord.run(BackStackRecord.java:578)
02-08 16:27:37.961: ERROR/AndroidRuntime(1717):     at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1217)

什么好主意吗?当我检查蜂窝API参考翻译有。我错过了什么? 有没有其他方法来动画片段之间的过渡? 谢谢你!


当前回答

FragmentTransaction的Android SDK实现需要一个动画器,而支持库需要一个动画,不要问我为什么,但在strangeluk的评论之后,我查看了Android 4.0.3代码和支持库。 Android SDK使用loadAnimator(),支持库使用loadAnimation()

其他回答

如果你能负担得起只把自己绑在棒棒糖上,这似乎很管用:

import android.transition.Slide;
import android.util.Log;
import android.view.Gravity;
.
.
.
f = new MyFragment();
f.setEnterTransition(new Slide(Gravity.END));
f.setExitTransition(new Slide(Gravity.START));
getFragmentManager()
    .beginTransaction()
    .replace(R.id.content, f, FRAG_TAG)  // FRAG_TAG is the tag for your fragment
    .commit();

芬兰湾的科特林版:

f = MyFragment().apply {
    enterTransition = Slide(Gravity.END)
    exitTransition = Slide(Gravity.START)
}
fragmentManager
    .beginTransaction()
    .replace(R.id.content, f, FRAG_TAG)  // FRAG_TAG is the tag for your fragment
    .commit();

希望这能有所帮助。

你需要使用新的安卓系统。动画框架(对象动画器)与FragmentTransaction。setCustomAnimations和fragmenttransaction。settransition。

下面是一个从ApiDemos的fragmenthidshow .java中使用setCustomAnimations的例子:

ft.setCustomAnimations(android.R.animator.fade_in, android.R.animator.fade_out);

这是res/animator/fade_in.xml中相关的动画器XML:

<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:interpolator/accelerate_quad"
    android:valueFrom="0"
    android:valueTo="1"
    android:propertyName="alpha"
    android:duration="@android:integer/config_mediumAnimTime" />

注意,您可以使用<set>组合多个动画器,就像使用旧的动画框架一样。


编辑:既然大家都在问关于滑进/滑出的问题,我就在这里评论一下。

滑进滑出

You can of course animate the translationX, translationY, x, and y properties, but generally slides involve animating content to and from off-screen. As far as I know there aren't any transition properties that use relative values. However, this doesn't prevent you from writing them yourself. Remember that property animations simply require getter and setter methods on the objects you're animating (in this case views), so you can just create your own getXFraction and setXFraction methods on your view subclass, like this:

public class MyFrameLayout extends FrameLayout {
    ...
    public float getXFraction() {
        return getX() / getWidth(); // TODO: guard divide-by-zero
    }

    public void setXFraction(float xFraction) {
        // TODO: cache width
        final int width = getWidth();
        setX((width > 0) ? (xFraction * width) : -9999);
    }
    ...
}

现在你可以动画'xFraction'属性,就像这样:

res /动画/ slide_in.xml:

<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator"
    android:valueFrom="-1.0"
    android:valueTo="0"
    android:propertyName="xFraction"
    android:duration="@android:integer/config_mediumAnimTime" />

注意,如果你在其中进行动画的对象与它的父对象宽度不同,事情看起来就不太对,所以你可能需要调整你的属性实现来适应你的用例。

努里克的回答很有帮助,但我无法让它工作,直到我发现这个。简而言之,如果您正在使用兼容性库(例如SupportFragmentManager而不是FragmentManager), XML动画文件的语法将有所不同。

尝试使用这个简单快速的解决方案。Android提供了一些默认动画。

fragmentTransaction.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right);

FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.setCustomAnimations(android.R.anim.slide_in_left, android.R.anim.slide_out_right);
fragmentManager.addOnBackStackChangedListener(this);
fragmentTransaction.replace(R.id.frame, firstFragment, "h");
fragmentTransaction.addToBackStack("h");
fragmentTransaction.commit();

输出:

对于其他任何被捕获的人,确保在构建事务时调用replace/add之前调用setCustomAnimations。