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react-native - 假设 AppDelegate 中不存在某些代码，react-native-navigation 安装说明的问题

问题描述

我正在尝试安装 react-native-navigation 并按照https://wix.github.io/react-native-navigation/#/docs/Installing在编辑 ios 文件部分的说明进行操作。说明告诉我编辑 AppDelegate.m。说明告诉我添加此代码，最终结果应如下所示。 

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { ... }

最终结果应该是这样的

 #import "AppDelegate.h"
 #import <React/RCTBundleURLProvider.h>
 #import <React/RCTRootView.h>
 #import <ReactNativeNavigation/ReactNativeNavigation.h>

 @implementation AppDelegate

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
     NSURL *jsCodeLocation = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];
     [ReactNativeNavigation bootstrap:jsCodeLocation launchOptions:launchOptions];

     return YES;
 }

 @end

但我的 AppDelegate.m 看起来不像这样？相反，它看起来像这样......

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */



#import "AppDelegate.h"

#import <React/RCTBridge.h>
#import <React/RCTBundleURLProvider.h>
#import <React/RCTRootView.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
  return [RCTLinkingManager application:application openURL:url
                      sourceApplication:sourceApplication annotation:annotation];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
  RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
                                                   moduleName:@"planzu"
                                            initialProperties:nil];

  rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];

  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
  UIViewController *rootViewController = [UIViewController new];
  rootViewController.view = rootView;
  self.window.rootViewController = rootViewController;
  [self.window makeKeyAndVisible];
  return YES;
}

- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
{
#if DEBUG
  return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index" fallbackResource:nil];
#else
  return [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
#endif
}

@end

我应该如何进行？我应该消除顶部和底部方法吗？或者只是替换事件调用'didFinishLaunchingWithOptions'？

标签： react-nativewix-react-native-navigationvelo

解决方案

您应该将您AppDelegate的didFinishLaunchingWithOptions方法修改为 RNN 文档中提到的方法。这是 RNN 的入口点，它取代了创建桥和根视图的通常的 react-native 设置。

您可以保留其他两种方法 (openURL和sourceURLForBridge) 不变。

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