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App Inventor 2 AnimatedGif扩展教程 - 显示GIF动画 · App Inventor 2 中文网
...if扩展
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来源：http://kio4.com/appinventor/132B_extensiones_animatedgif.htm
基本用法
when Screen1.Initialize() {
AnimatedGif1.Picture = "animation.gif"
AnimatedGif1.Play = true
}
when 按钮_暂停.Click() {
AnimatedG...
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