Retrofit 协程适配器
支持三种调用方式
- suspend 调用无 try catch
- async await 并发无 try catch
- flow 流式调用
引入方式
// root build.gradle
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
// module build.gradle
dependencies {
implementation 'com.github.XiaoBaiCZ:CoroutineCallAdapter:2.9.0'
}
Service Interface
interface Service {
// CoroutineCall<T>
@GET("/")
fun index(): CoroutineCall<ResponseBody>
}
object ServiceHelper {
private val retrofit: Retrofit = Retrofit.Builder()
.baseUrl("https://www.google.com/")
// add call adapter
.addCallAdapterFactory(CoroutineCallAdapterFactory)
.build()
val service get() = retrofit.create<Service>()
}
Coroutine Suspend
class MainActivity : AppCompatActivity() {
private val service by lazy {
ServiceHelper.service
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
MainScope().launch {
// call service
val (data, throwable) = service.index().call()
// handle throwable?
throwable?.apply { printStackTrace() }
// handle success
data?.apply {
println(this)
}
}
}
}
Coroutine Async
class MainActivity : AppCompatActivity() {
private val service by lazy {
ServiceHelper.service
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
MainScope().launch {
// call service
val index = service.index().async(this)
// await response
val (data, throwable) = index.await()
// handle throwable?
throwable?.apply { printStackTrace() }
// handle success
data?.apply {
println(this)
}
}
}
}
Coroutine Flow
class MainActivity : AppCompatActivity() {
private val service by lazy {
ServiceHelper.service
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
MainScope().launch {
// 1.call service
// 2.map to string
// 3.collect(handle throwable / success)
service.index().flow().map { body ->
body.string()
}.catch { t ->
t.printStackTrace()
}.collect { content ->
println(content)
}
}
}
}
