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浅析 Android 开发文档的 SexualActivityRecord 类

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刚刚网上冲浪看到 reddit 热门被吓一跳,还以为 Android 搞了个大新闻,瞬间标题都想好了:谷歌 Android 系统逆天操作——监控“为爱鼓掌”频率

浅析 Android 开发文档的 SexualActivityRecord 类

https://www.reddit.com/r/programming/comments/16iy537/android_has_a_separate_class_and_documentation_to/

再看一眼,原来是说 Android 开发文档提供了用于记录性生活频率的 “SexualActivityRecord” 类。

https://developer.android.com/reference/androidx/health/connect/client/records/SexualActivityRecord

那就看看谷歌工程师如何编写这个类。

可以看到这个类总共有 3 个常量,代表了 Sex 是否采取保护措施:

  • 1:已做安全保护
  • 0:未知
  • 2:无安全保护

浅析 Android 开发文档的 SexualActivityRecord 类

公有方法主要有 getProtectionUsed()、getTime()、getZoneOffset()

浅析 Android 开发文档的 SexualActivityRecord 类

前面两个都能理解,获取保护措施情况和发生时间,但最后的 ZoneOffset 是啥意思?麻烦大佬们解答一下。

众所周知,Kotlin 早已成为 Android 官方支持的开发语言,所以这个类的代码也是 Kotlin 写的,总共不到 100 行:

SexualActivityRecord.kt

  /*   * Copyright (C) 2022 The Android Open Source Project   *   * Licensed under the Apache License, Version 2.0 (the "License");   * you may not use this file except in compliance with the License.   * You may obtain a copy of the License at   *   *      http://www.apache.org/licenses/LICENSE-2.0   *   * Unless required by applicable law or agreed to in writing, software   * distributed under the License is distributed on an "AS IS" BASIS,   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   * See the License for the specific language governing permissions and   * limitations under the License.   */  package androidx.health.connect.client.records    import androidx.annotation.IntDef  import androidx.annotation.RestrictTo  import androidx.health.connect.client.records.metadata.Metadata  import java.time.Instant  import java.time.ZoneOffset    /**   * Captures an occurrence of sexual activity. Each record is a single occurrence. ProtectionUsed   * field is optional.   */  public class SexualActivityRecord(      override val time: Instant,      override val zoneOffset: ZoneOffset?,      /**       * Whether protection was used during sexual activity. Optional field, null if unknown. Allowed       * values: [Protection].       *       * @see Protection       */      @property:Protections public val protectionUsed: Int = PROTECTION_USED_UNKNOWN,      override val metadata: Metadata = Metadata.EMPTY,  ) : InstantaneousRecord {      override fun equals(other: Any?): Boolean {          if (this === other) return true          if (other !is SexualActivityRecord) return false            if (protectionUsed != other.protectionUsed) return false          if (time != other.time) return false          if (zoneOffset != other.zoneOffset) return false          if (metadata != other.metadata) return false            return true      }        override fun hashCode(): Int {          var result = protectionUsed          result = 31 * result + time.hashCode()          result = 31 * result + (zoneOffset?.hashCode() ?: 0)          result = 31 * result + metadata.hashCode()          return result      }        companion object {          const val PROTECTION_USED_UNKNOWN = 0          const val PROTECTION_USED_PROTECTED = 1          const val PROTECTION_USED_UNPROTECTED = 2            /** Internal mappings useful for interoperability between integers and strings. */          @RestrictTo(RestrictTo.Scope.LIBRARY)          @JvmField          val PROTECTION_USED_STRING_TO_INT_MAP: Map<String, Int> =              mapOf(                  Protection.PROTECTED to PROTECTION_USED_PROTECTED,                  Protection.UNPROTECTED to PROTECTION_USED_UNPROTECTED,              )            @RestrictTo(RestrictTo.Scope.LIBRARY)          @JvmField          val PROTECTION_USED_INT_TO_STRING_MAP = PROTECTION_USED_STRING_TO_INT_MAP.reverse()      }        /** Whether protection was used during sexual activity. */      internal object Protection {          const val PROTECTED = "protected"          const val UNPROTECTED = "unprotected"      }        /**       * Whether protection was used during sexual activity.       */      @Retention(AnnotationRetention.SOURCE)      @IntDef(          value =              [                  PROTECTION_USED_PROTECTED,                  PROTECTION_USED_UNPROTECTED,              ]      )      @RestrictTo(RestrictTo.Scope.LIBRARY)      annotation class Protections  }

好了,本次分享到此为止,欢迎大家各抒己见。如果让你来负责写这个类,会怎么实现?

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