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如何实现设置用户头像功能呢？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
在inventor中如何实现调用相册功能选择图片设置成用户头像功能呢，就是类似于微信中点击头像会弹出从相册中选择或者拍照来设置头像的功能
多媒体下面的组件可以实现，具体用法参考中文文档：https://www.fun123.cn/reference/comp...
Detecting a mobile browser
...f(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|window...
CDC:DrawText 多行显示文本（文本自动换行） - C++ UI - 清泛IT社区，为创新赋能！
...和DT_TABSTOP值一起使用。
返回值：如果函数调用成功，返回值是正文的高度；如果函数调用失败，返回值是0。
Windows NT：若想获得更多错误信息，请调用GetLastError函数。
备注：函数DrawText用...
What are some good resources for learning about Artificial Neural Networks? [closed]
...any notions that artificial neural networks have anything to do with the brain but for a passing similarity to networks of biological neurons. Learning biology won't help you effectively apply neural networks; learning linear algebra, calculus, and probability theory will. You should at the very lea...
How to launch an Activity from another Application in Android
...
If you don't know the main activity, then the package name can be used to launch the application.
Intent launchIntent = getPackageManager().getLaunchIntentForPackage("com.package.address");
if (launchIntent != null) {
startActivity(launchInte...
将Linux代码移植到Windows的简单方法 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...一个Windows界面以方便用户调试程序，不过Insight最终还是调用GDB。在这里具体调试就不细说明了。
五：多平台代码
移植后的代码(本文于2003年完成. 如需要转载 请联系jackforce@163.com)如果需要在多个平台上面运行，就要在lib目录...
Why should I avoid multiple inheritance in C++?
...ly, it was done for bad reasons, and it will blow back in the face of the maintainer.
Summary
Consider composition of features, instead of inheritance
Be wary of the Diamond of Dread
Consider inheritance of multiple interfaces instead of objects
Sometimes, Multiple Inheritance is the right thing. I...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注IT技能提升
...来判断到底返回哪个子类。我们可以简单的写个客户端来调用一下这个服务，但很快你会发现浏览器（客户端）返回给你了错误：
Server Error in '/' Application.
The underlying connection was closed: The connection was closed unexpectedly.
Descri...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注IT技能提升
...来判断到底返回哪个子类。我们可以简单的写个客户端来调用一下这个服务，但很快你会发现浏览器（客户端）返回给你了错误：
Server Error in '/' Application.
The underlying connection was closed: The connection was closed unexpectedly.
Descri...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注IT技能提升
...来判断到底返回哪个子类。我们可以简单的写个客户端来调用一下这个服务，但很快你会发现浏览器（客户端）返回给你了错误：
Server Error in '/' Application.
The underlying connection was closed: The connection was closed unexpectedly.
Descri...