喷气背包伴奏者中的 launchPermissionRequest() 什么都不做

Question

在我的应用程序中，我必须请求 write to external storage 的许可才能保存位图以便能够共享它。现在看看下面的代码，每当我调用它时，都会出现警告对话框，但 no permission request appears 来自 Android 本身。我在日志中只能看到 Let's launch permission request. 如何适当地显示 Android 的权限 window 以获得该权限？谢谢。

@ExperimentalPermissionsApi
@Composable
fun Permission(
    permission: String = android.Manifest.permission.WRITE_EXTERNAL_STORAGE,
    rationale: String = "This permission is important for this app. Please grant the permission.",
    permissionNotAvailableContent: @Composable () -> Unit = { },
    content: @Composable () -> Unit = { }
) {
    val permissionState = rememberPermissionState(permission)
    PermissionRequired(
        permissionState = permissionState,
        permissionNotGrantedContent = {
            Rationale(
                text = rationale,
                onRequestPermission = {
                    println("Let's launch permission request.")
                    permissionState.launchPermissionRequest()
                }
            )
        },
        permissionNotAvailableContent = permissionNotAvailableContent,
        content = content
    )
}

@Composable
private fun Rationale(
    text: String,
    onRequestPermission: () -> Unit
) {
    AlertDialog(
        onDismissRequest = { /* Don't */ },
        title = {
            Text(text = "Permission request")
        },
        text = {
            Text(text)
        },
        confirmButton = {
            Button(onClick = onRequestPermission) {
                Text("Ok")
            }
        }
    )
}

Answer 1

只是为了让大家不要错过评论中 ADM 提到的可能的解决方案。

ADM解决方案：检查是否在manifest中添加了权限

喷气背包伴奏者中的 launchPermissionRequest() 什么都不做

launchPermissionRequest() in jetpack accompanist does nothing

android

kotlin

android-jetpack-compose

jetpack-compose-accompanist