Kotlin:异步访问功能 [英] Kotlin: Acessing function asynchronously
问题描述
我访问了一个为RecyclerView返回数组的函数.如何加载异步数组? 我这样加载函数:
I accessed a function that returns array for my RecyclerView. How do i load the array async? I load the function as such:
var content = ContentList().list(navBarTitle)
ContentList类:
ContentList class:
class ContentList {
fun list(title : String):Array<Array<Int>>
{
var contentTitle : Array<Array<Int>>
if (title == "Hijaiyyah Letters")
contentTitle = arrayOf(
arrayOf(R.drawable.ic_intro1_1, R.raw.ahem_x),
arrayOf(R.drawable.ic_intro1_2, R.raw.bad_disk_x),
arrayOf(R.drawable.ic_intro1_3, R.raw.baseball_hit),
arrayOf(R.drawable.ic_intro1_4, R.raw.bloop_x),
arrayOf(R.drawable.ic_intro1_5, R.raw.blurp_x),
arrayOf(R.drawable.ic_intro1_6, R.raw.blurp_x),
arrayOf(R.drawable.ic_intro1_7, R.raw.ahem_x),
arrayOf(R.drawable.ic_intro1_8, R.raw.bad_disk_x),
arrayOf(R.drawable.ic_intro1_9, R.raw.baseball_hit),
arrayOf(R.drawable.ic_intro1_10, R.raw.bloop_x),
arrayOf(R.drawable.ic_intro1_11, R.raw.ahem_x),
arrayOf(R.drawable.ic_intro1_12, R.raw.bad_disk_x),
arrayOf(R.drawable.ic_intro1_13, R.raw.baseball_hit),
arrayOf(R.drawable.ic_intro1_14, R.raw.bloop_x),
arrayOf(R.drawable.ic_intro1_15, R.raw.blurp_x),
arrayOf(R.drawable.ic_intro1_16, R.raw.ahem_x),
arrayOf(R.drawable.ic_intro1_17, R.raw.bad_disk_x),
arrayOf(R.drawable.ic_intro1_18, R.raw.baseball_hit),
arrayOf(R.drawable.ic_intro1_19, R.raw.bloop_x),
arrayOf(R.drawable.ic_intro1_20, R.raw.blurp_x),
arrayOf(R.drawable.ic_intro1_21, R.raw.bloop_x),
arrayOf(R.drawable.ic_intro1_22, R.raw.ahem_x),
arrayOf(R.drawable.ic_intro1_23, R.raw.bad_disk_x),
arrayOf(R.drawable.ic_intro1_24, R.raw.baseball_hit),
arrayOf(R.drawable.ic_intro1_25, R.raw.bloop_x),
arrayOf(R.drawable.ic_intro1_26, R.raw.blurp_x),
arrayOf(R.drawable.ic_intro1_27, R.raw.ahem_x),
arrayOf(R.drawable.ic_intro1_28, R.raw.bad_disk_x),
arrayOf(R.drawable.ic_intro1_29, R.raw.baseball_hit),
arrayOf(R.drawable.ic_intro1_30, R.raw.bloop_x),
arrayOf(R.drawable.ic_intro1_31, R.raw.blurp_x)
)
else if(title == "Fat-hah Vowel 1")
contentTitle = arrayOf(
arrayOf(R.drawable.ic_fathah1_1, R.raw.ahem_x),
arrayOf(R.drawable.ic_fathah1_2, R.raw.bad_disk_x),
arrayOf(R.drawable.ic_fathah1_3, R.raw.baseball_hit),
arrayOf(R.drawable.ic_fathah1_4, R.raw.bloop_x),
arrayOf(R.drawable.ic_fathah1_5, R.raw.blurp_x)
)
else
contentTitle = arrayOf(
arrayOf(R.drawable.ic_tbr, R.raw.ahem_x),
arrayOf(R.drawable.ic_tbr, R.raw.bad_disk_x),
arrayOf(R.drawable.ic_tbr, R.raw.baseball_hit),
arrayOf(R.drawable.ic_tbr, R.raw.bloop_x),
arrayOf(R.drawable.ic_tbr, R.raw.blurp_x)
)
return contentTitle
}
}
我还有很多要填充数组,但是应用程序已经落后了,所以我正在考虑异步方法.我用谷歌搜索了Kotlin异步方法,但看到了有关为其创建新函数的信息吗?非常感谢任何指针/建议.提前数百万个thanx ...
I still have lots more to populate the array but already the app is lagging so i i am thinking of async approach. I googled for Kotlin async methods but saw its about creating new function for it? Any pointers/advise is very much appreciated. Millions of thanx in advance...
推荐答案
您可以使用Kotlin coroutine
.您可以尝试以下代码
You can use Kotlin coroutine
. You can try below code
CoroutineScope(Dispatchers.Main).launch {
val content = async(Dispatchers.IO) {
ContentList().list(navBarTitle)
}
// result will have returned value of `list()` function
var result = content.await()
}
}
因为,我们正在从协程访问list()
,它必须是suspend
函数
As, we are accessing list()
from coroutine, it needs to be suspend
function
suspend fun list(title : String): Array<Array<Int>> { }
这篇关于Kotlin:异步访问功能的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!