Here's a list of key points for HTML5 drag and drop API Drop event not fired You need to preventDefault in dragover event Make only header draggable Set

On IOS platform, iphone and simulator are different targets. To produce one framework for both targets, you need to use xcframwork. First, build each framework separately then run xcodebuild to combine multi frameworks into xcframework. xcodebuild -create-xcframework -framework Release-iphoneos/VerovioFramework.framework -framework Release-iphonesimulator/VerovioFramework.

Windows MacOS build cmake -DBUILD_AS_LIBRARY=ON -DCMAKE_BUILD_TYPE=Release -B build cmake --build build --config Release Look like non-unicode system locale cause build to fail. Adjusted to English for building. Android build In Application.mk add: APP_SHORT_COMMANDS := true In

安卓全页面嵌入 全页面嵌入flutter使用io.flutter.embedding.android.FlutterActivity 部分页面嵌入 部分页面嵌入flutter使用io.flutter.embedding.android.FlutterView和io.flutter.embedding.engine.FlutterEngine 在onCreate方法里面flutterView.attachToFlutterEngine(flutterEngine);onDestroy方法里面flutterView.detachFromFlutterEngine();同时还要把其他几个声明周期状态传到flutter，例如flutterEngine.getLifecycleChannel().appIsResumed();

单页面应用发布后刷新页面404遇到过么？本篇我们来聊下单页面相关的nginx配置。 nginx是一个高性能的反向代理服务器，也经常用于服务静态资源。一般发布一组静态资源需要配置一个location快，里面填好root跟目录，就可以对外提供这个文件夹的资源访问。如下： location / { root /path/to/static/files/; } 但是单页面只使用root并不行，放到nginx之后一般需要额外的配置。否则在一个较深的url上，刷新页面就会变成404。这是因为单页面的路由在页面运行过程中是虚拟的。后端并不存在对应的静态资源匹配对应的url。 解决这个问题需要告诉nginx，假如资源找不到就返回index.html给前端。 location / { root /path/to/static/files/; try_files $uri $uri/ /index.html; } 假如spa的跟路径是某个路径的话，用root可能会有问题。因为它跟$uri的内容有关，它包含了已经匹配的路径。最好使用alias替换root。alias使$uri

Flutter provider package is a simple state management solution. There are few essential provider classes you need to know: Provider, FutureProvider,  ChangeNotifierProvider, ProxyProvider. Here I record some basic usages for provide 5 Provider let you inject a dependency for its decendents. Provider( create: (ctx)

Sometimes, when calling methods on a struct inside a box or rc, you want the wrapper object. The way to do it is to use `self: &Box` notation in parameter. Here's an example. use std::rc::Rc; struct Node; impl Node { fn test_