Flutter应用Xcode归档时Firestore废弃API报错求助

问题原因 #

你使用的cloud_firestore:4.7.1版本未适配Firebase iOS SDK的最新API，其中persistenceEnabled和cacheSizeBytes属性已被废弃，需改用cacheSettings配置缓存相关参数。

解决方案 #

方案一：升级cloud_firestore版本 #

1. 打开项目根目录下的pubspec.yaml文件，找到cloud_firestore依赖项，将版本更新至4.10.0及以上（该版本已修复废弃API问题）：

dependencies:
  cloud_firestore: ^4.10.0

2. 执行命令更新依赖：

flutter pub get

3. 重新在Xcode中尝试归档操作。

方案二：手动修改本地缓存文件（不升级版本时使用） #

找到报错的文件：/Users/mg/.pub-cache/hosted/pub.dev/cloud_firestore-4.7.1/ios/Classes/FLTFirebaseFirestoreReader.m，修改其中的FIRFirestoreSettings方法：

替换前代码片段

- (FIRFirestoreSettings *)FIRFirestoreSettings {
  NSDictionary *values = [self readValue];
  FIRFirestoreSettings *settings = [[FIRFirestoreSettings alloc] init];

  if (![values[@"persistenceEnabled"] isEqual:[NSNull null]]) {
    settings.persistenceEnabled = [((NSNumber *)values[@"persistenceEnabled"]) boolValue];
  }

  if (![values[@"host"] isEqual:[NSNull null]]) {
    settings.host = (NSString *)values[@"host"];
    // Only allow changing ssl if host is also specified.
    if (![values[@"sslEnabled"] isEqual:[NSNull null]]) {
      settings.sslEnabled = [((NSNumber *)values[@"sslEnabled"]) boolValue];
    }
  }

  if (![values[@"cacheSizeBytes"] isEqual:[NSNull null]]) {
    int size = [((NSNumber *)values[@"cacheSizeBytes"]) intValue];
    if (size == -1) {
      settings.cacheSizeBytes = kFIRFirestoreCacheSizeUnlimited;
    } else {
      settings.cacheSizeBytes = (int64_t)size;
    }
  }

  settings.dispatchQueue = [FLTFirebaseFirestoreReader getFirestoreQueue];

  return settings;
}

替换后代码片段

- (FIRFirestoreSettings *)FIRFirestoreSettings {
  NSDictionary *values = [self readValue];
  FIRFirestoreSettings *settings = [[FIRFirestoreSettings alloc] init];
  FIRFirestoreCacheSettings *cacheSettings = [[FIRFirestoreCacheSettings alloc] init];

  if (![values[@"persistenceEnabled"] isEqual:[NSNull null]]) {
    cacheSettings.isPersistenceEnabled = [((NSNumber *)values[@"persistenceEnabled"]) boolValue];
  }

  if (![values[@"host"] isEqual:[NSNull null]]) {
    settings.host = (NSString *)values[@"host"];
    // Only allow changing ssl if host is also specified.
    if (![values[@"sslEnabled"] isEqual:[NSNull null]]) {
      settings.sslEnabled = [((NSNumber *)values[@"sslEnabled"]) boolValue];
    }
  }

  if (![values[@"cacheSizeBytes"] isEqual:[NSNull null]]) {
    int size = [((NSNumber *)values[@"cacheSizeBytes"]) intValue];
    if (size == -1) {
      cacheSettings.sizeBytes = kFIRFirestoreCacheSizeUnlimited;
    } else {
      cacheSettings.sizeBytes = (int64_t)size;
    }
  }

  settings.cacheSettings = cacheSettings;
  settings.dispatchQueue = [FLTFirebaseFirestoreReader getFirestoreQueue];

  return settings;
}

修改完成后，重新在Xcode中执行归档操作即可。

内容的提问来源于stack exchange，提问作者Mahmoud