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App Inventor 2 LEGO 乐高专题 · App Inventor 2 中文网
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AI2Utils 拓展：一些常用的小功能集合 · App Inventor 2 中文网
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FlashLight 拓展：打开/关闭手机手电筒/闪光灯 · App Inventor 2 中文网
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Screenshot 拓展：截取手机屏幕 · App Inventor 2 中文网
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App Inventor 2 ColorSeekbar 扩展：水平颜色选择条 · App Inventor 2 中文网
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MultiImagePicker 拓展：图片单选/多选扩展 · App Inventor 2 中文网
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AccessibilityTools 无障碍工具扩展：执行返回、主页和最近任务等操作 · A...
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App Inventor 2 CirculBar 扩展：在图像组件上绘制自定义圆形进度条 · App Inventor 2 中文网
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NumberPicker 扩展：滑动选择数字，自定义样式 · App Inventor 2 中文网
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Getting random numbers in Java [duplicate]
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Dave Deasy
333 bronze badges
answered May 4 '11 at 17:54
zengrzengr
35.5k3636 gold badges...