有没有关于将类似Action Block的功能集成到你的Android应用程序中的指南？

dependencies {
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.0"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.0"
}

import kotlinx.coroutines.*
import kotlinx.coroutines.flow.*

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // 启动一个协程
        GlobalScope.launch(Dispatchers.Main) {
            val result = withContext(Dispatchers.IO) {
                // 模拟耗时操作
                delay(1000)
                "Hello, Coroutines!"
            }
            // 更新UI
            textView.text = result
        }
    }
}

import kotlinx.coroutines.flow.*

fun main() = runBlocking {
    // 创建一个Flow
    val flow = flow {
        for (i in 1..5) {
            delay(100)
            emit(i)
        }
    }

    // 收集Flow的数据
    flow.collect { value ->
        println(value)
    }
}

import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.launch

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        lifecycleScope.launch {
            // 协程会在Activity销毁时自动取消
        }
    }
}

lifecycleScope.launch {
    try {
        val result = withContext(Dispatchers.IO) {
            // 模拟耗时操作
            delay(1000)
            "Hello, Coroutines!"
        }
        textView.text = result
    } catch (e: Exception) {
        e.printStackTrace()
    }
}