flatlist react native

React Native Version Upgrade plugin (Android only), react-native version requires 0.17.0 and aboveHow to install 1. Install the NPM package firstNPM Install react-native-upgrade-android--save2.link Auto Link Method ~ NPM requires

/** * Loading JavaScript code-uncomment The one you want. * OPTION 1 * Load from Development server. Start the server from the repository root: * * $ NPM -Start * * to-run on device, change ' localhost ' to the IP address of your computer * (You can get it by typing ' ifconfig "into the terminal and selecting the * ' inet ' Value under ' En0: ') and make sure your computer and IOS device is * on the same Wi-Fi network. */ jscodelocation = [Nsurl urlwithstring:@ "Http:/

1. No need to set up can be uploaded, with the formdata of Rn to achieve,const formData = new FormData();formData.append(‘file‘, {uri: imageUri, name: imageName, type: ‘image/jpeg‘});And put it in a fetch or XMLHttpRequest.Here's a big pit. To specify a type, an error occurs if you do not specify2. "React-native-fileupload" Upload images, Android needs this, iOS can be used directly with XMLHttpRequest (And

Open the console and execute the two lines separately (NPM mirroring accelerates the process later)After execution (yarn is a tool that Facebook offers to replace NPM, which accelerates the download of the node module)NPM install-g Yarn REACT-NATIVE-CLIAnd then execute (yarn after the same also set the mirror source)Yarn Config Set registry Https://registry.npm.taobao.org–global Yarn Config set Disturl Http

RN can interact well with the native, so let's look at the effect first:First, let's take a look at react Native how to invoke iOS code with simple parameters:In iOS project we create a new class Iosexport,iosexport will implement the Rctbridgemodule protocol.First we will add this macro definition to the implementation of the Iosexport class: Rct_export_module (

Today, when doing a customer project, there is a need to display the remote image on the app, and the remote image may be updated, but the image name does not change.In React-native, the display image is the own image component, we all know that react before updating the component will determine whether props or state has changed, when there is a change will not

Android uses the package name as the unique ID for the app.Assuming the package name is com.oc.objective, the following needs to be modified.Two Java files Android/app/src/main/java/com/project_name/mainactivity.java Android/app/src/main/java/com/project_name/mainapplication.java 修改第一行package com.oc.objective;Description file for Android Android/app/src/main/androidmanifest.xml 修改第二行，把package的至改为com.oc.objectivepackage="com.oc.objective"Two pack Scripts 1. Android

When I first tried reactnative, I thought it was just a astray for web developers to get involved in native mobile applications.I think it's really cool that a JS developer can use JavaScript to build the iphone app, but I quickly gave up the idea of using it. After all, I've been working on iOS native for a hobby for years, and I'm already familiar with this set of development tools.I've created some of th