【深入理解Kotlin协程】使用Job控制协程的生命周期

class ExampleClass {
    ...
    fun exampleMethod() {
        // Handle to the coroutine, you can control its lifecycle
        val job = scope.launch {
            // New coroutine
        }
        if (...) {
            // Cancel the coroutine started above, this doesn't affect the scope
            // this coroutine was launched in
            job.cancel()
        }
    }
}

我们通过Job可以获取当前协程的运行状态，还可以随时取消协程。

val job = GlobalScope.launch(start = CoroutineStart.LAZY) {
    println("执行在协程中...") 
    delay(1000L) 
    println("执行完毕...") 
}
job.start()

var job = GlobalScope.launch { 
    println("执行在协程中...") 
    delay(1000L)
    println("执行完毕...") 
} 
...
override fun onDestroy() { 
    job.cancel()
    super.onDestroy() 
}

val exceptionHandler = CoroutineExceptionHandler { coroutineContext, throwable -> 
    YYLogUtils.e(throwable.message ?: "Unkown Error") 
} 
val job = GlobalScope.launch(Dispatchers.Main + exceptionHandler) {