Accompanist库的launchPermission函数并没有提供回调函数的接口。但我们可以使用Kotlin协程中提供的suspendCancellableCoroutine函数来实现自定义的回调函数。具体实现方式如下：

import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalLifecycleOwner
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.flowWithLifecycle
import kotlinx.coroutines.CancellationException
import kotlinx.coroutines.launch
import kotlinx.coroutines.suspendCancellableCoroutine

/**
 * Launches a system permission request for the specified [permission] and suspends
 * until the user has granted or denied the permission. The [rationale] function is called
 * if the user has previously denied the permission and [shouldShowRationale] is true.
 * Returns true if the permission is granted, false otherwise.
 */
suspend fun launchPermission(
    permission: String,
    rationale: (suspend () -> Unit)? = null,
    shouldShowRationale: (String) -> Boolean = { true }
): Boolean {
    val context = LocalContext.current
    val lifecycleOwner = LocalLifecycleOwner.current
    val requestPermissionLauncher = remember(context) {
        context.activityResultRegistry.register(
            "request_$permission",
            lifecycleOwner,
            ActivityResultContracts.RequestPermission()
        ) { result ->
            /* no-op */
        }
    }

    val coroutineScope = rememberCoroutineScope()

    return suspendCancellableCoroutine { continuation ->
        val permissionStateFlow = context.checkSelfPermission(permission)
            .flowWithLifecycle(lifecycleOwner.lifecycle, Lifecycle.State.STARTED)

        val permissionState = permissionStateFlow.first()

        if (permissionState == android.content.pm.PackageManager.PERMISSION_GRANTED) {
            continuation.resume(true)
        } else if (shouldShowRationale(permission)) {
            coroutineScope.launch {
                rationale?.invoke()
                continuation.resume(false)
            }
        } else {
            val permissionRequest = permissionRequest { continuation.resume(it) }
            requestPermissionLauncher.launch(permission)

            continuation.invokeOnCancellation {
                if (it is CancellationException) {
                    permissionRequest.cancel()
                }
            }
        }
    }
}
``