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Created October 15, 2015 04:06
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React Native async load bundled file
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
#import "AppDelegate.h"
#import "RCTRootView.h"
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
NSURL *jsCodeLocation;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:@"%@/%@", documentsDirectory,@"index.ios.bundle"];
* Loading JavaScript code - uncomment the one you want.
* 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 this by typing `ifconfig` into the terminal and selecting the
* `inet` value under `en0:`) and make sure your computer and iOS device are
* on the same Wi-Fi network.
//jsCodeLocation = [NSURL URLWithString:@"http://localhost:8081/Examples/Movies/MoviesApp.ios.bundle?platform=ios&dev=true"];
* Load from pre-bundled file on disk. To re-generate the static bundle
* from the root of your project directory, run
* $ react-native bundle --minify
* see
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSURL *url = [NSURL URLWithString:@"http://localhost:8081/index.ios.bundle?platform=ios&dev=true"];
NSData *urlData = [NSData dataWithContentsOfURL:url];
if ( urlData )
//saving is done on main thread
dispatch_async(dispatch_get_main_queue(), ^{
[urlData writeToFile:filePath atomically:YES];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath];
if (fileExists) {
jsCodeLocation = [[NSURL alloc] initFileURLWithPath:filePath];
} else {
jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
UIViewController *rootViewController = [[UIViewController alloc] init];
rootViewController.view = rootView;
self.window.rootViewController = rootViewController;
[self.window makeKeyAndVisible];
return YES;
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