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WavSoundRecorder 录音拓展，生成 .wav 格式音频文件，可用于百度云语音识...
有用户反馈：百度云语音识别时，需要传入 .wav 或 .m4a 格式的音频文件，但是原生的 （多媒体下的）“录音机” 组件生成的是 .3gp 格式的音频文件，不能识别，有没有 .wav 格式的录音拓展？
有，验证下来生成的 .wav 格式音...
运动软件设计问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
本帖最后由 wwwwwwwwwwww 于 2026-07-03 10:55 编辑
我要做一个运动软件，里面有一个轨迹图功能，我应该怎么做出来？需要用什么组件？而且我需要怎么处理运动距离过远的时候缩放和自动保存？
地图相关组件，画线组件，地图本...
水平滚动布局管理器 HorizontalScrollHandler - App Inventor 2 中文网 - ...
这个如何使用？扩展文档写得并不详细。
重磅上新！代码大纲：轻松找到对应的代码块 - App Inventor 2 中文网 - 清...
重磅上新！
1、入口：
2、展示大纲，可无极调整透明度：
3、搜索联动
代码大纲显示详细的组件相关概览，双击定位指定块。
可以无级调整透明度，记住弹窗状态和弹窗位置。
联动搜索功能，方便查找组件或...
Disabling user selection in UIWebView
I have an app where I load content to a UIWebView and present this. I cannot disable user interaction completely because I want the user to be able to click links. I just need to disable user selection. I found somewhere in the Internets that you can use:
...
Best way to show a loading/progress indicator?
What is the best way to show a loading spinner while the app is waiting for a response from the server?
5 Answers
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Cannot hide status bar in iOS7
I just upgraded my iPhone 5 iOS 7 to four beta version. Now when I run my app from Xcode 5 on this iPhone, status bar doesn’t hide, even though it should.
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how to implement a pop up dialog box in iOS
... message:@"You must be connected to the internet to use this app."
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
[alert release];
...
How do I fix “Failed to sync vcpu reg” error?
...lled everything and created an AVD for the android version, and everything appears correct, but when I run it, I get this output:
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Determine if running on a rooted device
My app has a certain piece of functionality that will only work on a device where root is available. Rather than having this feature fail when it is used (and then show an appropriate error message to the user), I'd prefer an ability to silently check if root is available first, and if not,hide the ...