react-native-android

问题 I have initiated successfully a new react-native project. Then, every time I try to run my newly built project using the command react-native run-android , it gets stucks on info Starting JS server... . Here is the output: $ react-native run-android info Running jetifier to migrate libraries to AndroidX". You can disable it using "--no-jetifier" flag. Jetifier found 855 file(s) to forward-jetify. Using 4 workers... info Starting JS server..." I tried restarting the laptop and switching

问题 I am getting this error in react-native. This error came when I installed This self developed and published package. Module HMRClient is not a registered callable module (calling setup) Same code is working on my app when using it without NPM module. 来源： https://stackoverflow.com/questions/60369450/module-hmrclient-is-not-a-registered-callable-module-calling-setup

问题 I've spent a considerable amount of time integrating react native into my existing IOS and android apps. And, it's working just fine. However, the fast refresh feature is not working at all. However, fast refresh works just fine if I start a new project with react-native init . Can anyone shed some light on the following: How does the fast refresh feature work? (I know watchman is involved, but I believe that something is not telling my app when watchman detects a change in the JS) Where I

问题 When Using react-navigation version 4.1.1 When navigating from one screen to another screen it is fluctuating and i am using ImageBackground there ,so first white blank screen appears after that imagebackground is loading which is very slow and i can easily see the transition over there . I dont know what's the exact issue is there. And for this new version i have to install libraries also for react navigation i.e.react-native screens,animated and maskedView ,safeareacontext. So please any

问题 I am new in React and trying to build dynamic form. It seems to work fine. The problem is when i type the field values, they are shown in screen, but the value property of Textinput remain null. I tried to explore all options, and it came down to async of setState. Since i am new i do not know how to make a call back function which can populate the value property of the dynamic form fields. I have not inlcuded all the code, just what i thought would be relevant to avoid burden. thanks sal

问题 I am getting the an error when I am using react-native start , the bundler error is: bundling failed: ReferenceError: SHA-1 for file /home/suvodip/.nvm/versions/node/v8.17.0/lib/node_modules/react-native/node_modules/metro/src/lib/polyfills/require.js (/home/suvodip/.nvm/versions/node/v8.17.0/lib/node_modules/react-native/node_modules/metro/src/lib/polyfills/require.js) is not computed at DependencyGraph.getSha1 (/home/suvodip/.nvm/versions/node/v8.17.0/lib/node_modules/react-native/node

问题 I have two images with little difference between them and each corresponding to a particular state. I need to smoothly transition from one to the other when I change the state so that the effect feels like only the part which is different in the two images has undergone animation,the rest of the image staying as it is. I want it to work so that when I render the second image on stateChange, only the rod like part in the second image appears to fade in,the rest remaining still. I think this

问题 I have recently upgraded to react native 0.56 . I have been getting a lot of errors but I have fixed most of it. But now When I try to run the app in release mode I get this js error . 2019-05-01 11:45:00.625 [fatal][tid:com.facebook.react.ExceptionsManagerQueue] Unhandled JS Exception: TypeError: n.render is not a function. (In 'n.render()', 'n.render' is undefined) This error is located at: in n dyld_image_header_containing_address(0x10ba6d27d) dladdr(0x10fcc329b, 0x7f823a8ad560) dladdr

问题 I have a hashmap that contains Map<String, List<Custom_object> = new ConcurrentHashMap<>(); The data gets filed in this map, and I need to send the updated map data to react native JS bridge. How can I achieve the same? Thanks in advance, Siva 回答1: I usually convert my Custom Object to json String then I parse it to writableMap and return it like below. @ReactMethod public void yourBridgeMethod(final ReadableMap argument, final Promise promise) { try { Object x = getMapCustom; final Gson gson

问题 After cloning a React Native project and setting the all the requirements in android studio I am getting 3 errors in the terminal after running the command "react-native run-android". Can anyone please help me! How to fix these errors. 1) error React Native CLI uses autolinking for native dependencies, but the following modules are linked manually: - react-native-camera (to unlink run: "react-native unlink react-native-camera") 2) error Failed to install the app. Make sure you have the