Compose Safe Args

为了简化 compose navigation 数据传输的插件

Github地址

example

在你要传递的实体类上加上SafeArgs注解

@SafeArgs("route_name") 
class SampleData(
    val index: Int,
    val name: String = "",
    val sampleList: List<String>
)

在 NavHost 注册路由

composableSafeArgs<SampleData> { entry, it ->
    if (it != null)
        SecondPage(it)
}

启动 SecondPage

val toSecond: (NavBackStackEntry, SampleData) -> Unit = { from, bean->
        navController.navigateWithSafeArgs(from, bean)
    }

因为使用的是Gson来序列化，所以SampleData和OtherModuleSampleData名字和类型对应上，注解上的route_name一致就能获取到数据,模块间通信使用。当然也可以把SampleData下沉到基础模块

@SafeArgs("route_name")
class OtherModuleSampleData(
    val sampleList: List<String>,
    val name: String = "",
    val index: Int
)

如果你的数据结构太简单，不想使用 SafeArgs

在 NavHost

composableSafeArgs(MainDestinations.ROUTE_THIRD) { entry, it ->
    val list: List<String> = it.getParam("list") ?: listOf()
    ThirdPage(it.getParam<Int>("index") ?: 0, list) {
        val data = OtherModuleSampleData(
            listOf("1", "2", "3"),
            "OtherModule",
            1
        )
        actions.toSecond(entry, data)
    }
}

启动 ThirdPage

navController.navigateWithSafeArgs(MainDestinations.ROUTE_THIRD) {
    addParam("index", 1)
    addParam("list", listOf("1", "2", "3"))
}