用于在Android中启动活动的自定义动画无法按预期工作

Question

我对Android有点新意.我需要在活动打开时在我的应用中自定义动画.

我在我的应用程序中使用了以下代码 styles.xml

<style name="YourAnimation.Activity" parent="@android:style/Animation.Activity">
    <item name="android:windowEnterAnimation">@anim/fade_in</item>
    <item name="android:windowExitAnimation">@anim/fade_out</item>
</style>

然后将样式应用于同一文件中的主题.

<style name="YourTheme" parent="android:Theme.Translucent">
    <item name="android:windowAnimationStyle">@style/CustomAnimationActivity</item>
</style>

然后在我的主题中添加主题 AndroidManifest.xml

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/YourTheme" >
</application>

但是,当我运行它时,会发生以下错误.

我想我需要在我的项目中的某处添加动画ml文件.但是,不知道该怎么做.有人请帮帮我.

提前致谢.:)

-编辑-

这里是 fade_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="true">
    <alpha
        android:duration="1000"
        android:fromAlpha="0.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="1.0"/>
</set>

这里是 fade_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="true">
    <alpha
        android:duration="1000"
        android:fromAlpha="1.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="0.0"/>
</set>

崩溃日志

05-20 15:36:47.216    3557-3557/com.myayubo E/AndroidRuntime? FATAL EXCEPTION: main
    Process: com.myayubo, PID: 3557
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myayubo/com.myayubo.PreSplash}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
            at android.os.Handler.dispatchMessage(Handler.java:110)
            at android.os.Looper.loop(Looper.java:193)
            at android.app.ActivityThread.main(ActivityThread.java:5299)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.support.v7.app.AppCompatDelegateImplBase.onCreate(AppCompatDelegateImplBase.java:122)
            at android.support.v7.app.AppCompatDelegateImplV7.onCreate(AppCompatDelegateImplV7.java:146)
            at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:59)
            at com.myayubo.PreSplash.onCreate(PreSplash.java:23)
            at android.app.Activity.performCreate(Activity.java:5264)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
            at android.os.Handler.dispatchMessage(Handler.java:110)
            at android.os.Looper.loop(Looper.java:193)
            at android.app.ActivityThread.main(ActivityThread.java:5299)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
            at dalvik.system.NativeStart.main(Native Method)

Answer 1

在Android Studio中:

• 右键单击res文件夹.
• 新> Android资源目录.
• 对于资源类型:选择动画.
• 按Ok,你就有了anim res文件夹.

然后,您可以创建/包括你的项目CustomAnimationActivity在您的styles.

编辑以下崩溃日志

java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.`

只需更改您styles.xml的AppCompat主题即可扩展主题

<style name="YourTheme" parent="android:Theme.AppCompat.Light">
        <item name="android:windowAnimationStyle">@style/CustomAnimationActivity</item>
</style>

此外,您Activity应该扩展AppCompatActivity(或Activity).