Android Kotlin:异步访问函数
我访问了一个为我的RecyclerView返回数组的函数。如何异步加载阵列? 我加载函数如下所示:Android Kotlin:异步访问函数,android,kotlin,Android,Kotlin,我访问了一个为我的RecyclerView返回数组的函数。如何异步加载阵列? 我加载函数如下所示: var content = ContentList().list(navBarTitle) 内容列表类: class ContentList { fun list(title : String):Array<Array<Int>> { var contentTitle : Array<Array<Int>>
var content = ContentList().list(navBarTitle)
内容列表类:
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
}
}
类内容列表{
趣味列表(标题:字符串):数组
{
var-contentTitle:Array
如果(标题=“Hijaiyyah字母”)
contentTitle=arrayOf(
阵列(R.drawable.ic_intro1_1,R.raw.ahem_x),
阵列(R.drawable.ic_intro1_2,R.raw.bad_disk_x),
阵列(R.drawable.ic_intro1_3,R.raw.Basketball_hit),
阵列(R.drawable.ic_intro1_4,R.raw.bloop_x),
阵列(R.drawable.ic_intro1_5,R.raw.blurp_x),
阵列(R.drawable.ic_intro1_6,R.raw.blurp_x),
阵列(R.drawable.ic_intro1_7,R.raw.ahem_x),
阵列(R.drawable.ic_intro1_8,R.raw.bad_disk_x),
阵列(R.drawable.ic_intro1_9,R.raw.Basketball_hit),
阵列(R.drawable.ic_intro1_10,R.raw.bloop_x),
阵列(R.drawable.ic_intro1_11,R.raw.ahem_x),
阵列(R.drawable.ic_intro1_12,R.raw.bad_disk_x),
阵列(R.drawable.ic_intro1_13,R.raw.Basketball_hit),
阵列(R.drawable.ic_intro1_14,R.raw.bloop_x),
阵列(R.drawable.ic_intro1_15,R.raw.blurp_x),
阵列(R.drawable.ic_intro1_16,R.raw.ahem_x),
阵列(R.drawable.ic_intro1_17,R.raw.bad_disk_x),
阵列(R.drawable.ic_intro1_18,R.raw.Basketball_hit),
阵列(R.drawable.ic_intro1_19,R.raw.bloop_x),
阵列(R.drawable.ic_intro1_20,R.raw.blurp_x),
阵列(R.drawable.ic_intro1_21,R.raw.bloop_x),
阵列(R.drawable.ic_intro1_22,R.raw.ahem_x),
阵列(R.drawable.ic\u intro1\u 23,R.raw.bad\u disk\u x),
阵列(R.drawable.ic_intro1_24,R.raw.Basketball_hit),
阵列(R.drawable.ic_intro1_25,R.raw.bloop_x),
阵列(R.drawable.ic_intro1_26,R.raw.blurp_x),
阵列(R.drawable.ic_intro1_27,R.raw.ahem_x),
阵列(R.drawable.ic\u intro1\u 28,R.raw.bad\u disk\u x),
阵列(R.drawable.ic_intro1_29,R.raw.Basketball_hit),
阵列(R.drawable.ic_intro1_30,R.raw.bloop_x),
阵列(R.drawable.ic_简介1_31,R.raw.blurp_x)
)
else if(标题=“肥哈元音1”)
contentTitle=arrayOf(
阵列(R.drawable.ic_fathah1_1,R.raw.ahem_x),
阵列(R.drawable.ic_fathah1_2,R.raw.bad_disk_x),
阵列(R.drawable.ic_fathah1_3,R.raw.Basketball_hit),
阵列(R.drawable.ic_fathah1_4,R.raw.bloop_x),
阵列(R.drawable.ic_fathah1_5,R.raw.blurp_x)
)
其他的
contentTitle=arrayOf(
阵列(R.drawable.ic_tbr,R.raw.ahem_x),
阵列(R.drawable.ic\u tbr,R.raw.bad\u disk\u x),
阵列(R.drawable.ic_tbr,R.raw.Basketball_hit),
阵列(R.drawable.ic_tbr,R.raw.bloop_x),
阵列(R.drawable.ic_tbr,R.raw.blurp_x)
)
返回内容标题
}
}
我还有很多东西要填充阵列,但应用程序已经落后了,所以我考虑采用异步方法。我在谷歌上搜索了Kotlin异步方法,但看到了关于为它创建新函数的信息?非常感谢您的指点/建议。您可以使用Kotlin
coroutine
。你可以试试下面的代码
CoroutineScope(Dispatchers.Main).launch {
val content = async(Dispatchers.IO) {
ContentList().list(navBarTitle)
}
// result will have returned value of `list()` function
var result = content.await()
}
}
由于我们正在从coroutine访问list()
,所以它需要是suspend
函数
suspend fun list(title : String): Array<Array<Int>> { }
suspend fun list(标题:String):数组{}
检查Kotlin协同程序:从IDE获取错误期望成员声明
到我的前一行:recyclerView\u main.adapter=SecondAdapter(内容)
。。。有什么想法吗?