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https://www.fun123.cn/reference/other/media.html 

访问图像和声音 · App Inventor 2 中文网

... SDCard 上),确保指定完整的文件名,包括“mp3”。 Android系统还包括另一种将SDCard文件设计为URL的方法。 在这里,你可以使用 file:///sdcard 作为文件名前缀,并对特殊字符使用“URL 编码”。 例如,空格是“%20”。 因此,你...
https://puravidaapps.com/table.php 

App Inventor Tutorials and Examples: Dynamic Table Layout | Pura Vida Apps

...s and/or columns! Note: there seems to be an issue with the new Android System Webview update on some devices. See Boban's tip here how to solve it. Thank you Boban! You also might be interested in my editable(!) dynamic table layout example! New in Versio...
https://bbs.tsingfun.com/thread-1499-1-1.html 

拓展开发:@UsesPermissions(permissionNames 多个权限怎么写? - App Inve...

这样就行,逗号分开: @UsesPermissions(permissionNames = "android.permission.INTERNET, android.permission.RECORD_AUDIO, android.permission.CAMERA")
https://www.fun123.cn/referenc... 

App Inventor 2 PhoneInfo 拓展:获取手机等设备软硬件、版本等相关信息 ·...

...下载: PhoneInfo.aia 使用方法 GetDeviceID 获取设备ID。Android 10+不支持! GetPhoneNumber 获取本机手机号码。无SIM卡设备将返回空文本;双SIM卡设备将返回主卡号码。Android 10+不支持! 注:这个方法采用的是较常规的方式获取信...
https://bbs.tsingfun.com/thread-1633-1-1.html 

TaifunFlashlight 手电筒/闪光灯拓展 - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!

一个用于打开/关闭手电筒的扩展插件,所需要的权限: android.permission.CAMERA(注:拍摄照片和视频) android.permission.FLASHLIGHT(注:控制手电筒) 要至少11级的API(即Android 3.0.0以上) 属性 返回设备是否有闪光灯 过程 ...
https://bbs.tsingfun.com/thread-2102-1-1.html 

蓝牙接收的数据怎么一行一行更新显示和,类似图2这样的 - App应用开发 - 清...

...还在写  为什么现在app出现运行故障 弹出来:Need android.permission.BLUETOOTH_SCAN permission for android.content.AttributionSource@d5ca151a: GattService registerScanner 注意: 5秒钟后将报告另一条错误信息。liangzhi123 发表于 2024-12-06 16:04 这个还...
https://stackoverflow.com/ques... 

Handler vs AsyncTask

... provide a convenient, easy-to-use way to achieve background processing in Android apps, without worrying too much about the low-level details(threads, message loops etc). It provides callback methods that help to schedule tasks and also to easily update the UI whenever required. However, it is im...
https://stackoverflow.com/ques... 

How to convert Milliseconds to “X mins, x seconds” in Java?

...Minutes(millis)) ); If TimeUnit or toMinutes are unsupported (such as on Android before API version 9), use the following equations: int seconds = (int) (milliseconds / 1000) % 60 ; int minutes = (int) ((milliseconds / (1000*60)) % 60); int hours = (int) ((milliseconds / (1000*60*60)) % 24); //...
https://www.tsingfun.com/it/ai2/ai2_connect.html 

App Inventor 2 AI伴侣有电脑版的吗? - App Inventor 2 中文网 - 清泛网 - 专注C/C++及内核技术

...ct.html各种连接方式的特点:连接方式测试介质特点AI伴侣Android手机特别适合小朋友...有,但是不好用,不建议使用。参考中文文档:https://www.fun123.cn/reference/creative/connect.html 各种连接方式的特点: 连接方式 测...
https://stackoverflow.com/ques... 

Retrieve a Fragment from a ViewPager

... private static String makeFragmentName(int viewId, long id) { return "android:switcher:" + viewId + ":" + id; } A HAPPY PATH: ViewPager.instantiateItem() A similar approach to getItem() above but non-lifecycle-breaking is to this is to hook into instantiateItem() instead of getItem() as the ...