如何在 Kotlin 中为动画列表设置动画?
How to animate animation-list in Kotlin?
我在 drawables
中有一个 animation list
XML
:
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false">
<item android:duration="40" android:drawable="@drawable/animated_person_0 />
<item android:duration="40" android:drawable="@drawable/animated_person_1 />
<item android:duration="40" android:drawable="@drawable/animated_person_2 />
</animated-list>
我从 content_main.xml
:
中调用了 list
<ImageView
...
android:id="@+id/animatedPerson"
android:src="@drawable/animatedperson"
...
/>
现在无论我用我的代码尝试什么,我都无法启动动画。
在Java中是这样的:
// Get the background, which has been compiled to an AnimationDrawable object.
AnimationDrawable frameAnimation = (AnimationDrawable) img.getBackground();
// Start the animation (looped playback by default).
frameAnimation.start();
所以 Kotlin 会非常相似:
// Get the background, which has been compiled to an AnimationDrawable object.
val frameAnimation: AnimationDrawable = img.background as AnimationDrawable
// Start the animation (looped playback by default).
frameAnimation.start()
Kotlin 类似于 java...
// 获取背景,已编译为AnimationDrawable对象
val frameAnimation: AnimationDrawable = img.background as AnimationDrawable
// 开始播放动画(默认循环播放)
frameAnimation.start()
另一种方法是通过按 ctrl + shift + a 将 java 代码转换为 kotlin,然后在操作字段中,写下
convert java to Kotlin..
它会自动转换kotlin中的java代码。
没人问,但我在安口做了,你不需要后台!?只是为了某人如何实现很棒的动画......
我是真正的安口粉!
loadinganim 是 animation-list .xml
loadingAnim = imageView{
imageResource = R.drawable.loadinganim
}
loadingAnim = loadingView.drawable as AnimationDrawable
loadingAnim.start()
我在 drawables
中有一个 animation list
XML
:
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false">
<item android:duration="40" android:drawable="@drawable/animated_person_0 />
<item android:duration="40" android:drawable="@drawable/animated_person_1 />
<item android:duration="40" android:drawable="@drawable/animated_person_2 />
</animated-list>
我从 content_main.xml
:
list
<ImageView
...
android:id="@+id/animatedPerson"
android:src="@drawable/animatedperson"
...
/>
现在无论我用我的代码尝试什么,我都无法启动动画。
在Java中是这样的:
// Get the background, which has been compiled to an AnimationDrawable object.
AnimationDrawable frameAnimation = (AnimationDrawable) img.getBackground();
// Start the animation (looped playback by default).
frameAnimation.start();
所以 Kotlin 会非常相似:
// Get the background, which has been compiled to an AnimationDrawable object.
val frameAnimation: AnimationDrawable = img.background as AnimationDrawable
// Start the animation (looped playback by default).
frameAnimation.start()
Kotlin 类似于 java...
// 获取背景,已编译为AnimationDrawable对象
val frameAnimation: AnimationDrawable = img.background as AnimationDrawable
// 开始播放动画(默认循环播放)
frameAnimation.start()
另一种方法是通过按 ctrl + shift + a 将 java 代码转换为 kotlin,然后在操作字段中,写下
convert java to Kotlin..
它会自动转换kotlin中的java代码。
没人问,但我在安口做了,你不需要后台!?只是为了某人如何实现很棒的动画......
我是真正的安口粉!
loadinganim 是 animation-list .xml
loadingAnim = imageView{
imageResource = R.drawable.loadinganim
}
loadingAnim = loadingView.drawable as AnimationDrawable
loadingAnim.start()