在Android中使用协程注意事项

• Add kotlinx-coroutines-android module as dependency when using kotlinx.coroutines on Android:

implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.5'

• version

code text

ext.kotlin_version = '1.3.70'

coroutines-cn

Ref

• Android Studio中Coroutine Debug 两种方式

1. 通过代码设置， 在自己的Application类的onCreate里添加下面配置就可以了

System.setProperty("kotlinx.coroutines.debug", "on")

2. 开启R8再配置

   //在gradle.properties里开启R8
   android.enableR8 = true

然后在proguard-rules.pro文件中添加以下配置：

   -assumevalues class kotlinx.coroutines.Debugkt {
      static boolean DEBUG return true;
}

3. Demo code

import kotlinx.coroutines.*
fun log(msg: String) = println("[${Thread.currentThread().name}] $msg")
fun main() = runBlocking<Unit> {
    val a = async {
        log("I'm computing a piece of the answer")
        6
    }
    val b = async {
        log("I'm computing another piece of the answer")
        7
    }
    log("The answer is ${a.await() * b.await()}")
}

4. 执行结果：

2020-05-14 17:56:28.627 10024-10024/com.yy.kotlindemo I/System.out: [main @coroutine#2] I'm computing a piece of the answer
2020-05-14 17:56:28.628 10024-10024/com.yy.kotlindemo I/System.out: [main @coroutine#3] I'm computing another piece of the answer
2020-05-14 17:56:28.628 10024-10024/com.yy.kotlindemo I/System.out: [main @coroutine#1] The answer is 42