引言

anko 是kotlin官方（JetBrains）针对android快速开发 而开源的一个库，主要的目的是以代码取代xml来书写UI布局、包含了很多常用的函数和功能 以减少大量的模板代码（类似 android官方的 各种 ktx 库）,本文主要介绍后者

Anko Commons – Dialogs

• implementation

dependencies {
    implementation "org.jetbrains.anko:anko-commons:$anko_version"
    implementation "org.jetbrains.anko:anko-design:$anko_version" // For SnackBars
}

• toast

toast("Hi there!")
toast(R.string.message)
longToast("Wow, such duration")

• SnackBars

view.snackbar("Hi there!")
view.snackbar(R.string.message)
view.longSnackbar("Wow, such duration")
view.snackbar("Action, reaction", "Click me!") { doStuff() }

• Alerts

alert("Hi, I'm Roy", "Have you tried turning it off and on again?") {
    yesButton { toast("Oh…") }
    noButton {}
}.show()

alert(Appcompat, "Some text message").show()

• Selectors

val countries = listOf("a", "b", "c", "d")
selector("Where are you from?", countries, { dialogInterface, i ->
    toast("So you're living in ${countries[i]}, right?")
})

• Progress dialogs

val dialog = progressDialog(message = "Please wait a bit…", title = "Fetching data")

Anko Coroutines（线程切换）

• implementation

dependencies {
    implementation "org.jetbrains.anko:anko-coroutines:$anko_version"
}

Anko Commons – Intents

• implementation

dependencies {
    implementation "org.jetbrains.anko:anko-commons:$anko_version"
}

• startActivity

常规代码如下：

val intent = Intent(this, SomeOtherActivity::class.java)
intent.putExtra("id", 5)
intent.setFlag(Intent.FLAG_ACTIVITY_SINGLE_TOP)
startActivity(intent)

anko代码

//等价于上面的常规代码
startActivity(intentFor<SomeOtherActivity>("id" to 5).singleTop())
//传递单数据
startActivity<SomeOtherActivity>("id" to 5)
//传递多数据
startActivity<SomeOtherActivity>(
    "id" to 5,
    "city" to "Denpasar"
)

• Make a call

makeCall(number) // without tel

• send sms

sendSMS(number, [text]) //without sms

• Browse

browse(url)