microsoft-metro

问题 Example: let tmp; try { tmp = require('module-name'); } catch(e) { return; } I get error (react native Metro Bundler): error: bundling failed: Error: Unable to resolve module `module-name` from ... How to require "module-name" only if exist? 回答1: That's what works for me: let myPackage; const myPackageToRequire = 'my-package-to-require'; try { myPackage = require.call(null, myPackageToRequire); } catch (e) {} The variable definition const myPackageToRequire = 'my-package-to-require'; is

问题 What the hell is wrong with my code? private void BrowseButton_Click(object sender, RoutedEventArgs e) { FileOpenPicker FilePicker = new FileOpenPicker(); FilePicker.FileTypeFilter.Add(".exe"); FilePicker.ViewMode = PickerViewMode.List; FilePicker.SuggestedStartLocation = PickerLocationId.Desktop; // IF I PUT AWAIT HERE V I GET ANOTHER ERROR¹ StorageFile file = FilePicker.PickSingleFileAsync(); if (file != null) { AppPath.Text = file.Name; } else { AppPath.Text = ""; } } It gives me this

问题 Can I load a local HTML file (with images and ...) into a WebView ? Just setting the Source parameter does not do the trick. 回答1: You can load it from a file as long as the file is part of the app package, e.g.: WebView2.Source = new Uri("ms-appx-web:///assets/text.html"); From WebView.Navigate WebView can load content from the application’s package using ms-appx-web://, from the network using http/https, or from a string using NavigateToString. It cannot load content from the application’s

问题 I know it is bad to call Task.Wait in UI thread. It causes a deadlock. Please refer to Constructor invoke async method Await, and UI, and deadlocks! Oh my! Take the following code: public MainPage() { this.InitializeComponent(); step0(); step1(); } private async Task step0() { await Task.Delay(5000); System.Diagnostics.Debug.WriteLine("step 0"); } private async Task step1() { await Task.Delay(3000); System.Diagnostics.Debug.WriteLine("step 1"); } } How can I ensure that "step 0" is always

问题 After upgrade of RN from 0.59.10 to 0.61.4 I get: TypeError: hmrClient.send is not a function when trying to start the app. Just pressing on dismiss seems to work. Other people suggest removing metro and metro-core and setting setting metro-react-native-babel-preset to 0.56 but that doesn't seem to work for me. Issue was reported here: https://github.com/facebook/react-native/issues/26958 回答1: The issue was related to an old metro-config module. I had an old version of "react-native-fs": "2

问题 After upgrade of RN from 0.59.10 to 0.61.4 I get: TypeError: hmrClient.send is not a function when trying to start the app. Just pressing on dismiss seems to work. Other people suggest removing metro and metro-core and setting setting metro-react-native-babel-preset to 0.56 but that doesn't seem to work for me. Issue was reported here: https://github.com/facebook/react-native/issues/26958 回答1: The issue was related to an old metro-config module. I had an old version of "react-native-fs": "2

来源： https://stackoverflow.com/questions/53722700/how-to-require-module-only-if-exist-react-native

来源： https://stackoverflow.com/questions/53722700/how-to-require-module-only-if-exist-react-native

问题 now I've had a problem that is how to convert byte array to InMemoryRandomAccessStream or IRandomAccessStream in windows 8? This is my code, but It did't work, refer the following code internal static async Task<InMemoryRandomAccessStream> ConvertTo(byte[] arr) { InMemoryRandomAccessStream randomAccessStream = new InMemoryRandomAccessStream(); Stream stream = randomAccessStream.AsStream(); await stream.WriteAsync(arr, 0, arr.Length); await stream.FlushAsync(); return randomAccessStream; } And

问题 now I've had a problem that is how to convert byte array to InMemoryRandomAccessStream or IRandomAccessStream in windows 8? This is my code, but It did't work, refer the following code internal static async Task<InMemoryRandomAccessStream> ConvertTo(byte[] arr) { InMemoryRandomAccessStream randomAccessStream = new InMemoryRandomAccessStream(); Stream stream = randomAccessStream.AsStream(); await stream.WriteAsync(arr, 0, arr.Length); await stream.FlushAsync(); return randomAccessStream; } And