ios - React Native ios 应用程序在 xcode 之外运行时崩溃，在 19.88 秒错误后无法创建场景

Question

我的 React native 应用程序在 Xcode 外部启动时崩溃，以下异常显示在线程 0 的设备日志的崩溃报告中。

    Incident Identifier: DB5E0F81-977F-44B0-BD8B-FAAF33F98119
CrashReporter Key:   e3b8d0751b47b37db0d7d6fcc5dde46051f8d30c
Hardware Model:      iPhone7,1
Process:             crashTest [388]
Path:                /var/mobile/Containers/Bundle/Application/CE56E818-7288-4A39-8220-16E17158C916/crashTest.app/crashTest
Identifier:          org.reactjs.native.example.crashTest
Version:             1 (1.0)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2017-04-25 12:42:30.30 -0400
Launch Time:         2017-04-25 12:42:10.10 -0400
OS Version:          iOS 9.1 (13B143)
Report Version:      105

Exception Type:  00000020
Exception Codes: 0x000000008badf00d
Exception Note:  SIMULATED (this is NOT a crash)
Highlighted by Thread:  0

Application Specific Information:
org.reactjs.native.example.crashTest failed to scene-create after 19.92s (launch took 0.08s of total time limit 20.00s)

Elapsed total CPU time (seconds): 9.230 (user 9.230, system 0.000), 23% CPU 
Elapsed application CPU time (seconds): 0.113, 0% CPU

Filtered syslog:
None found

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0:
0   libsystem_kernel.dylib          0x0000000199ff0a7c semaphore_wait_trap + 8
1   libdispatch.dylib               0x0000000199ece614 _dispatch_semaphore_wait_slow + 244
2   CFNetwork                       0x0000000184246ac0 CFURLConnectionSendSynchronousRequest + 288
3   CFNetwork                       0x000000018426a07c +[NSURLConnection sendSynchronousRequest:returningResponse:error:] + 120
4   crashTest                       0x0000000100128858 -[RCTBundleURLProvider isPackagerRunning:] (RCTBundleURLProvider.m:76)
5   crashTest                       0x0000000100128b00 -[RCTBundleURLProvider guessPackagerHost] (RCTBundleURLProvider.m:92)
6   crashTest                       0x0000000100128d10 -[RCTBundleURLProvider packagerServerHost] (RCTBundleURLProvider.m:106)
7   crashTest                       0x0000000100128ed4 -[RCTBundleURLProvider jsBundleURLForBundleRoot:fallbackResource:] (RCTBundleURLProvider.m:123)
8   crashTest                       0x000000010006a8cc -[AppDelegate application:didFinishLaunchingWithOptions:] (AppDelegate.m:21)
9   UIKit                           0x000000018a0f5324 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 400
10  UIKit                           0x000000018a323acc -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 2904
11  UIKit                           0x000000018a327e0c -[UIApplication _runWithMainScene:transitionContext:completion:] + 1656
12  UIKit                           0x000000018a324f50 -[UIApplication workspaceDidEndTransaction:] + 168
13  FrontBoardServices              0x000000018e90b7c4 -[FBSSerialQueue _performNext] + 184
14  FrontBoardServices              0x000000018e90bb44 -[FBSSerialQueue _performNextFromRunLoopSource] + 56
15  CoreFoundation                  0x0000000184aa4544 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
16  CoreFoundation                  0x0000000184aa3fd8 __CFRunLoopDoSources0 + 540
17  CoreFoundation                  0x0000000184aa1cd8 __CFRunLoopRun + 724
18  CoreFoundation                  0x00000001849d0ca0 CFRunLoopRunSpecific + 384
19  UIKit                           0x000000018a0ee1c8 -[UIApplication _run] + 460
20  UIKit                           0x000000018a0e8ffc UIApplicationMain + 204
21  crashTest                       0x000000010006ad08 main (main.m:16)
22  libdyld.dylib                   0x0000000199eee8b8 start + 4

我了解我的应用启动和显示的时间过长。如果我在连接设备的情况下直接从 Xcode 运行，则没有任何问题(但确实需要很长时间才能启动)

我正在使用 react-native init

生成的默认 React 项目对此进行测试

当我在 Xcode 中构建项目时，我看到以下警告:

[tid:com.facebook.react.JavaScript][RCTModuleData.mm:220] RCTBridge required dispatch_sync to load RCTDevSettings. This may lead to deadlocks

我是 react-native 的新手，我假设这可能是在某种开发模式下运行，不允许我在不受限制或在不同网络上启动应用程序？在构建应用程序以在设备上独立运行而无需在 Xcode 中存档应用程序时，是否缺少我需要遵循的特殊说明？

Answer 1

检查您是否连接到同一个 WiFi 网络。刚吃了这个。