【转】Anko的那些事
Anko
Anko是一个Kotlin编写的为了快速/易懂的开发Android的库，一共有四个部分，分别为Commons，Layouts，SQLite，Coroutines
Commons:简单的使用Toast、Intent、Dialog等
Layouts:可以动态编写Android布局
SQLite:SQlite封装
Coroutines:基于kotlinx.coroutines封装的协程库
引入
全部引入
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implementation "org.jetbrains.anko:anko:$anko_version" |
分模块引用
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// Anko Commons implementation "org.jetbrains.anko:anko-commons:$anko_version" // Anko Layouts implementation "org.jetbrains.anko:anko-sdk25:$anko_version" // sdk15, sdk19, sdk21, sdk23 are also available implementation "org.jetbrains.anko:anko-appcompat-v7:$anko_version" // Coroutine listeners for Anko Layouts implementation "org.jetbrains.anko:anko-sdk25-coroutines:$anko_version" implementation "org.jetbrains.anko:anko-appcompat-v7-coroutines:$anko_version" // Anko SQLite implementation "org.jetbrains.anko:anko-sqlite:$anko_version" |
anko-commons
Colors：感觉没啥用
| Function | Result |
|---|---|
| 0xff0000.opaque | non-transparent red |
| 0x99.gray.opaque | non-transparent #999999 gray |
Dimensions:快捷转换尺寸
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dip() dp->px sp() sp->px px2dip() px->dp px2sp() px->sp |
applyRecursively：修改某个View下面所有的子View的属性，也可以指定条件
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//将root_layout下面的所有TextView的文字改成 "被修改了" root_layout.applyRecursively { if (it is TextView) it.text = "被修改了" } |
log:日志打印
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//方法一 直接实现AnkoLogger接口 class SomeActivity : Activity(), AnkoLogger { private fun someMethod() { info("London is the capital of Great Britain") debug(5) // .toString() method will be executed warn(null) // "null" will be printed } } //方法二:指定log对象 class SomeActivity : Activity() { private val log = AnkoLogger(this.javaClass) private val logWithASpecificTag = AnkoLogger("my_tag") private fun someMethod() { log.warning("Big brother is watching you!") } } |
Toast:显示Toast
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toast("Hi there!") toast(R.string.message) longToast("Wow, such duration") |
显示Dialog
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view.snackbar("Hi there!") view.snackbar(R.string.message) view.longSnackbar("Wow, such duration") view.snackbar("Action, reaction", "Click me!") { doStuff() } alert("Hi, I'm Roy", "Have you tried turning it off and on again?") { yesButton { toast("Oh…") } noButton {} }.show() progressDialog(message = "Please wait a bit…", title = "Fetching data") |
创建Intent
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//创建Intent对象并传递参数 intentFor<SomeOtherActivity>("id" to 5) //可以通过action等设置其他属性 |
几个系统封装
| Goal | Solution |
|---|---|
| Make a call | makeCall(number) without tel: |
| Send a text | sendSMS(number, [text]) without sms: |
| Browse the web | browse(url) |
| Share some text | share(text, [subject]) |
| Send a email | email(email, [subject], [text]) |
Coroutines :执行异步操作
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doAsync { //new thread uiThread { //ui线程 } } |
多写一点
由于Anko中的Layouts以及SQLite对于我来说并不是那么需要，所以就省略了，更多可以查看git文档
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