Jetpack Compose 具有访问本地文件的伴奏权限

Question

我想使用我放在 libs 目录中的密钥库文件。 我在AndroidManifest.xl中添加了权限

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

    <uses-sdk tools:overrideLibrary="com.github.dhaval2404.colorpicker,com.datacap.device_connection" />
    <uses-permission android:name="com.google.android.things.permission.MANAGE_INPUT_DRIVERS"/>

我在运行时请求了权限，并以这种方式使用Accompanist Permissions ：

@OptIn(ExperimentalPermissionsApi::class)
@Composable
fun PermissionsRequest(
    permissions: List<String>,
    deniedMessage: String,
    rationaleMessage: String
) {

    val multiplePermissionsState = rememberMultiplePermissionsState(permissions = permissions)
    HandelRequest(
        multiplePermissionsState = multiplePermissionsState,
        deniedContent = { shouldShowRationale ->
            PermissionDeniedContent(
                deniedMessage = deniedMessage,
                rationaleMessage = rationaleMessage,
                shouldShowRationale = shouldShowRationale,
                onRequestPermission = { multiplePermissionsState.launchMultiplePermissionRequest() }
            )
        },
        content = {}
    )
}

@Composable
fun Content(text: String, showButton: Boolean = true, onClick: () -> Unit) {
    Column(
        modifier = Modifier
            .fillMaxSize()
            .padding(50.dp)
            .background(color = Color.Gray),
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        Text(text = text, textAlign = TextAlign.Center)
        Spacer(modifier = Modifier.height(12.dp))
        if (showButton) {
            Button(onClick = onClick) {
                Text(text = "Give Permission")
            }
        }
    }
}

@OptIn(ExperimentalPermissionsApi::class)
@Composable
fun HandelRequest(
    multiplePermissionsState: MultiplePermissionsState,
    deniedContent: @Composable (Boolean) -> Unit,
    content: @Composable () -> Unit
) {
    var shouldShowRationale by remember { mutableStateOf(false) }

    val result = multiplePermissionsState.permissions.all {
        shouldShowRationale = it.status.shouldShowRationale
        it.status == PermissionStatus.Granted
    }
    if (!result) deniedContent(shouldShowRationale)
}

@ExperimentalPermissionsApi
@Composable
fun PermissionDeniedContent(
    deniedMessage: String,
    rationaleMessage: String,
    shouldShowRationale: Boolean,
    onRequestPermission: () -> Unit
) {
    if (shouldShowRationale) {
        AlertDialog(
            onDismissRequest = {},
            title = {
                Text(
                    text = "Permission Request",
                    style = TextStyle(
                        fontSize = MaterialTheme.typography.h6.fontSize,
                        fontWeight = FontWeight.Bold
                    )
                )
            },
            text = {
                Text(rationaleMessage)
            },
            confirmButton = {
                Button(onClick = onRequestPermission) {
                    Text("Give Permission")
                }
            }
        )
    } else {
        Content(text = deniedMessage, onClick = onRequestPermission)
    }
}

我要求获得这些权限：

val PERMISSIONS_LIST = listOf(Manifest.permission.CAMERA, Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE)

在应用程序第一次运行时，我得到了权限请求，我给了它一个访问权限，第一个是使用相机和录制视频，第二个是访问照片和媒体内容。

但我仍然一次又一次地遇到同样的错误：

失败，异常：java.io.FileNotFoundException：app/libs/keystore/keypos.jks：打开失败：ENOENT（没有这样的文件或目录）

如何解决这个问题？ 由于这个问题，我无法使用 ssl 设置。

Answer 1

似乎可以通过其他方式从应用程序 package 读取本地文件。

我将密钥库放在res目录中，在它自己的目录中。 并使用上下文来获取它。

val file = context?.resources?.openRawResource(R.raw.keypos)

就是这个。