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当我在 XCode 中构建我的 react-native 应用程序以在我的 iPhone 上的应用程序上进行测试时，我遇到了一些问题。

4个错误是：

  • 预期标识符
  • 预期标识符或“（”
  • 缺少方法声明的上下文
  • '@end' 必须出现在 Object-C 上下文中

所有这些错误都在我项目的测试 .m 文件 3rsTests.m

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

#import <UIKit/UIKit.h>
#import <XCTest/XCTest.h>

#import <React/RCTLog.h>
#import <React/RCTRootView.h>

#define TIMEOUT_SECONDS 600
#define TEXT_TO_LOOK_FOR @"Welcome to React Native!"

@interface threeRsTests : XCTestCase

@end

@implementation 3RsTests //Error: Expected Identifier

- (BOOL)findSubviewInView:(UIView *)view matching:(BOOL(^)(UIView *view))test
{
  if (test(view)) {
    return YES;
  }
  for (UIView *subview in [view subviews]) {
    if ([self findSubviewInView:subview matching:test]) {
      return YES;
    }
  }
  return NO;
}

- (void)testRendersWelcomeScreen //Error: missing context for method declaration
{
  UIViewController *vc = [[[RCTSharedApplication() delegate] window] rootViewController];
  NSDate *date = [NSDate dateWithTimeIntervalSinceNow:TIMEOUT_SECONDS];
  BOOL foundElement = NO;

  __block NSString *redboxError = nil;
  RCTSetLogFunction(^(RCTLogLevel level, RCTLogSource source, NSString *fileName, NSNumber *lineNumber, NSString *message) {
    if (level >= RCTLogLevelError) {
      redboxError = message;
    }
  });

  while ([date timeIntervalSinceNow] > 0 && !foundElement && !redboxError) {
    [[NSRunLoop mainRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate dateWithTimeIntervalSinceNow:0.1]];
    [[NSRunLoop mainRunLoop] runMode:NSRunLoopCommonModes beforeDate:[NSDate dateWithTimeIntervalSinceNow:0.1]];

    foundElement = [self findSubviewInView:vc.view matching:^BOOL(UIView *view) {
      if ([view.accessibilityLabel isEqualToString:TEXT_TO_LOOK_FOR]) {
        return YES;
      }
      return NO;
    }];
  }

  RCTSetLogFunction(RCTDefaultLogFunction);

  XCTAssertNil(redboxError, @"RedBox error: %@", redboxError);
  XCTAssertTrue(foundElement, @"Couldn't find element with text '%@' in %d seconds", TEXT_TO_LOOK_FOR, TIMEOUT_SECONDS);
}

@end //Error: '@end' must appear in an Objective-C context

我不是 Swift 或 Object-C 程序员，所以这些错误对我来说非常神秘。如果有人可以帮助我了解如何编译我的代码，我将不胜感激。

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1 回答 1

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这是一个测试文件，不会影响名称向用户显示的方式。我按照@David Liaw 的建议在第 17 行重命名了标识符，应用程序完成了 100% 的构建

于 2018-08-08T01:46:40.243 回答