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JetBrains在Kotlin 1.1.4
release版本中引入了Parcelize(替代Parcelable实现序列化),也就是说如果要用,必须升级到1.1.4之后的版本。
目前为止,它和Kotlin Coroutine一样也是实验性的特性,如果使用的话需要在app模块的build.gradle文件中添加下面代码:
androidExtensions { experimental = true }
数据类中加上如下注释:
@Parcelize data class AddressBean( var id: Int, var uid: Int, var name: String,
var address: String, var def: Int , var phone: String ) : Parcelable
以下是遇到的问题(因为是java项目直接convert到kotlin代码所以出现的问题)
在按照正规方式依次操作后,发现Parcelize这个类找不到,也就是没有办法引用它,试尽各种办法:
* clean,rebuild大法 (无效)
* tools - kotlin - Configure Kotlin in Project (无效)
* 修改Project下build.gradle里的kotlin版本 (无效)
* 查看官方文档 (无效,因为官方就那么几句介绍怎么用,然后我也是完全不差的操作)
百般尝试后冷静下来思考,找不到Parcelize有可能和依赖库有关,于是重新创建了个新的kotlin项目,确保新的项目里Parcelize能用,对比两个项目的依赖库,发现缺少:
org.jetbrains.kotlin:kotlin-android-extensions-runtime
于是在moudle下的build.gradle中手动加入
implementation
"org.jetbrains.kotlin:kotlin-android-extensions-runtime:$kotlin_version"
try again…
ok, I get “Parcelize”!!!!!
以上纯属个人想法,如有问题请指正
至于为什么java项目直接convert到kotlin会找不到Parcelize我也不清楚,望大神指导!