接口参考

本页列出 Android SDK 的公开业务模块、列表和句柄签名。除原生扩展注明的包外，类型位于 com.deeprespond.im。签名采用 Kotlin；Java 的回调、Future、Options 与订阅对应关系见Java 接入。参数默认值表示可以省略，Duration 来自 kotlin.time，JSON 来自 kotlinx.serialization.json。

suspend 方法在协程中调用；Flow / StateFlow 需要收集才会更新界面。网络和权限失败以 DRException 表示。分页通过 nextCursor 继续，列表与订阅结束后要释放。各方法的权限、限流、发送及取消语义见对应业务章节；返回对象的字段见数据类型。

DRClient

// 实例属性
auth: AuthModule
connection: ConnectionModule
users: UsersModule
devices: DevicesModule
config: StateFlow<ClientConfig?>
conversations: ConversationsModule
messages: MessagesModule
friends: FriendsModule
groups: GroupsModule
files: FilesModule
push: PushModule
presence: PresenceModule
chatrooms: ChatroomsModule
calls: CallsModule
channels: ChannelsModule
reports: ReportsModule
appKey: String
events: SharedFlow<DREvent>
startupEvents: List<DREvent>
hasPendingWork: Boolean

fun java(): DRJavaClient
fun <T : DREvent> on(type: KClass<T>): Flow<T>
inline fun <reified T : DREvent> on(): Flow<T>
fun keepForeground(): AutoCloseable
suspend fun <T> keepForeground(block: suspend () -> T): T
suspend fun exportDiagnostics(): java.io.File
suspend fun destroy()

// DRClient 静态入口
fun initialize(context: Context, options: DRClientOptions): DRClient
val instance: DRClient
val instanceOrNull: DRClient?
fun isMainProcess(context: Context): Boolean

初始化及选项见客户端。startupEvents 读取后清空；诊断 ZIP 在缓存中保存，24 小时过期。事件流有缓冲上限，业务数据以模块快照为准。

基础与登录

使用规则与示例见相关章节。

AuthModule

interface AuthModule {
    val state: StateFlow<AuthState>
    val currentUser: CurrentUser?
    val restored: StateFlow<Boolean>
    suspend fun awaitRestored()
    suspend fun loginWithTicket(ticket: String, username: String? = null): LoginResult
    suspend fun loginWithPassword(username: String, password: String): LoginResult
    suspend fun register(username: String, password: String, nickname: String? = null): SelfProfile
    suspend fun logout(clearLocalData: Boolean = false)
    suspend fun changePassword(currentPassword: String, newPassword: String)
    suspend fun clearLocalData(username: String? = null, all: Boolean = false)
}

ConnectionModule

interface ConnectionModule {
    val state: StateFlow<DRConnectionState>
    val serverTimeOffsetMs: Long
    fun reconnectNow()
    suspend fun waitUntilReady(timeout: Duration? = null)
    fun diagnostics(): Diagnostics
}

用户与设备

使用规则与示例见相关章节。

UsersModule

interface UsersModule {
    val me: StateFlow<SelfProfile?>
    suspend fun refreshMe(): SelfProfile
    suspend fun updateMe(nickname: String? = null, avatarUrl: String? = null, attributes: Map<String, String?>? = null, clearAttributes: Boolean = false, version: Long? = null): SelfProfile
    val myMute: MyMute
    fun get(username: String): UserProfile?
    suspend fun fetch(usernames: List<String>, force: Boolean = false): Map<String, UserProfile>
}

DevicesModule

interface DevicesModule {
    fun online(): List<OnlineDevice>
    suspend fun sessions(): List<LoginSession>
    suspend fun kick(sessionId: String)
}

会话与消息

使用规则与示例见相关章节。

ConversationList

interface ConversationList : LiveList<ConversationView>

MessageList

interface MessageList : AutoCloseable {
    val conversationKey: String
    val snapshot: StateFlow<MessageListSnapshot>
    suspend fun loadOlder()
    suspend fun loadNewer()
    suspend fun loadGap(gap: MessageGap)
    suspend fun jumpTo(seq: Long)
    fun markRead()
    fun setViewing(atBottom: Boolean? = null, visible: Boolean? = null)
    override fun close()
}

ConversationsModule

interface ConversationsModule {
    fun list(): ConversationList
    fun listFlow(): Flow<LiveListSnapshot<ConversationView>>
    suspend fun get(conversationId: String): ConversationView?
    suspend fun openSingle(username: String): ConversationView
    suspend fun refresh(conversationId: String): ConversationView
    fun markRead(conversationId: String, seq: Long? = null)
    suspend fun markAllRead(): MarkAllReadResult
    suspend fun setMarkedUnread(conversationId: String, marked: Boolean)
    suspend fun setPinned(conversationId: String, pinned: Boolean)
    suspend fun remove(conversationId: String, clearMessages: Boolean = false)
    suspend fun clearMessages(conversationId: String)
    suspend fun setDraft(conversationKey: String, draft: Draft?)
    val unreadTotal: StateFlow<Int>
    fun getUnreadTotal(excludeMuted: Boolean = false): Int
    fun getTyping(conversationKey: String): List<String>
    fun typing(conversationKey: String)
}

MessagesModule

interface MessagesModule {
    fun open(conversationKey: String, aroundSeq: Long? = null): MessageList
    suspend fun send(to: SendTarget, content: OutgoingContent, options: SendOptions = SendOptions()): MessageView
    suspend fun resend(clientMsgId: String)
    suspend fun discard(clientMsgId: String)
    suspend fun sendOnline(to: SendTarget, body: JsonObject, ext: JsonObject? = null): OnlineResult
    suspend fun sendOnline(to: SendTarget, body: Map<String, Any?>, ext: Map<String, Any?>? = null): OnlineResult
    suspend fun recall(conversationId: String, seq: Long): Boolean
    fun canRecall(message: MessageView): Boolean
    suspend fun deleteForMe(conversationId: String, seqs: List<Long>)
    suspend fun react(conversationId: String, seq: Long, key: String): Boolean
    suspend fun unreact(conversationId: String, seq: Long, key: String): Boolean
    suspend fun reactionUsers(conversationId: String, seq: Long, key: String, cursor: String? = null, limit: Int? = null): DRPage<ReactionUser>
    suspend fun setPinned(conversationId: String, seq: Long, pinned: Boolean): Boolean
    suspend fun lookup(conversationId: String, seqs: List<Long>): LookupResult
    suspend fun searchLocal(keyword: String, conversationId: String? = null, limit: Int = 50): List<MessageView>
    suspend fun receipts(conversationId: String, seqs: List<Long>): List<ReceiptCount>
    suspend fun receiptUsers(conversationId: String, seq: Long, status: ReceiptStatus, cursor: String? = null, limit: Int? = null): DRPage<ReceiptUser>
    fun getReceipt(conversationId: String, seq: Long): ReceiptCount?
}

好友

使用规则与示例见相关章节。

FriendsModule

interface FriendsModule {
    fun list(): LiveList<Friend>
    fun listFlow(): Flow<LiveListSnapshot<Friend>>
    fun get(username: String): Friend?
    val listInfo: FriendListInfo?
    suspend fun check(usernames: List<String>): List<FriendCheck>
    suspend fun update(username: String, remark: String? = null, attributes: Map<String, String?>? = null, clearAttributes: Boolean = false): Friend
    suspend fun remove(username: String)
    val requests: FriendRequestsModule
    val blacklist: FriendBlacklistModule
    val settings: FriendSettingsModule
}

FriendRequestsModule

interface FriendRequestsModule {
    suspend fun received(status: FriendRequestStatus? = null, cursor: String? = null, limit: Int? = null): DRPage<FriendRequest>
    suspend fun sent(status: FriendRequestStatus? = null, cursor: String? = null, limit: Int? = null): DRPage<FriendRequest>
    val unreadCount: StateFlow<Int>
    suspend fun markRead(readUntil: Long? = null)
    suspend fun send(username: String, message: String? = null, remark: String? = null, addSource: String? = null): FriendRequestResult
    suspend fun accept(username: String, remark: String? = null): Friend
    suspend fun decline(username: String)
}

FriendBlacklistModule

interface FriendBlacklistModule {
    fun list(): LiveList<BlacklistEntry>
    fun listFlow(): Flow<LiveListSnapshot<BlacklistEntry>>
    fun has(username: String): Boolean
    suspend fun add(username: String)
    suspend fun remove(username: String)
}

FriendSettingsModule

interface FriendSettingsModule {
    suspend fun
    suspend fun set(mode: FriendAddMode?)
}

群组

使用规则与示例见相关章节。

GroupsModule

interface GroupsModule {
    fun list(): LiveList<GroupView>
    fun listFlow(): Flow<LiveListSnapshot<GroupView>>
    suspend fun get(groupId: String, refresh: Boolean = false): GroupView?
    suspend fun lookup(groupIds: List<String>): List<GroupInfo>
    suspend fun publicGroups(namePrefix: String? = null, cursor: String? = null, limit: Int? = null): DRPage<GroupInfo>
    suspend fun create(
            name: String,
            type: GroupType? = null,
            avatarUrl: String? = null,
            description: String? = null,
            announcement: String? = null,
            attributes: Map<String, String?>? = null,
            memberInvite: MemberInvite? = null,
            joinMode: JoinMode? = null,
            members: List<String>? = null,
            message: String? = null,
        ): CreateGroupResult
    suspend fun update(
            groupId: String,
            type: GroupType? = null,
            name: String? = null,
            avatarUrl: String? = null,
            description: String? = null,
            announcement: String? = null,
            attributes: Map<String, String?>? = null,
            clearAttributes: Boolean = false,
            memberInvite: MemberInvite? = null,
            joinMode: JoinMode? = null,
            version: Long? = null,
        ): GroupInfo
    suspend fun transferOwner(groupId: String, username: String): GroupInfo
    suspend fun setMuteAll(groupId: String, on: Boolean): GroupInfo
    suspend fun leave(groupId: String)
    suspend fun dismiss(groupId: String)
    suspend fun onlineCount(groupId: String): GroupOnlineCount
    fun members(groupId: String, role: GroupRole? = null, muted: Boolean? = null): LiveList<GroupMember>
    fun membersFlow(groupId: String, role: GroupRole? = null, muted: Boolean? = null): Flow<LiveListSnapshot<GroupMember>>
    suspend fun lookupMembers(groupId: String, usernames: List<String>): List<GroupMember>
    suspend fun invite(groupId: String, usernames: List<String>, message: String? = null): List<GroupMemberResult>
    suspend fun removeMembers(groupId: String, usernames: List<String>): List<GroupMemberResult>
    suspend fun updateMember(groupId: String, username: String, groupNickname: String? = null, attributes: Map<String, String?>? = null, clearAttributes: Boolean = false): GroupMember
    suspend fun setRole(groupId: String, username: String, role: GroupRole): GroupMember
    suspend fun mute(groupId: String, username: String, duration: Duration? = null): GroupMember
    suspend fun unmute(groupId: String, username: String): GroupMember
    val blacklist: GroupBlacklistModule
    val joinLink: GroupJoinLinkModule
    val applications: GroupApplicationsModule
    val invitations: GroupInvitationsModule
    val requests: GroupRequestsModule
    val settings: GroupSettingsModule
}

GroupBlacklistModule

interface GroupBlacklistModule {
    suspend fun list(groupId: String, cursor: String? = null, limit: Int? = null): DRPage<GroupBlacklistEntry>
    suspend fun add(groupId: String, username: String, reason: String? = null)
    suspend fun remove(groupId: String, username: String)
}

GroupJoinLinkModule

interface GroupJoinLinkModule {
    suspend fun get(groupId: String): JoinLink
    suspend fun create(groupId: String, expiresIn: Duration? = null): JoinLink
    suspend fun revoke(groupId: String)
    suspend fun preview(link: String): JoinLinkPreview
    suspend fun join(link: String): GroupInfo
}

GroupApplicationsModule

interface GroupApplicationsModule {
    suspend fun apply(groupId: String, message: String? = null): String
    suspend fun withdraw(groupId: String)
    suspend fun mine(status: GroupRequestStatus? = null, cursor: String? = null, limit: Int? = null): DRPage<GroupRequest>
}

GroupInvitationsModule

interface GroupInvitationsModule {
    suspend fun received(status: GroupRequestStatus? = null, cursor: String? = null, limit: Int? = null): DRPage<GroupRequest>
    suspend fun accept(groupId: String): GroupInfo
    suspend fun decline(groupId: String, reason: String? = null)
}

GroupRequestsModule

interface GroupRequestsModule {
    suspend fun list(groupId: String, kind: GroupRequestKind? = null, status: GroupRequestStatus? = null, cursor: String? = null, limit: Int? = null): DRPage<GroupRequest>
    suspend fun approve(groupId: String, kind: GroupRequestKind, username: String): String
    suspend fun decline(groupId: String, kind: GroupRequestKind, username: String, reason: String? = null)
    suspend fun withdrawInvite(groupId: String, kind: GroupRequestKind, username: String)
}

GroupSettingsModule

interface GroupSettingsModule {
    suspend fun
    suspend fun set(mode: InviteMode?)
}

文件

使用规则与示例见相关章节。

FilesModule

interface FilesModule {
    fun upload(file: DRFile, purpose: UploadPurpose, kind: FileKind? = null, name: String? = null, groupId: String? = null, original: Boolean = false): UploadTask
    fun isFileUrl(url: String): Boolean
    suspend fun resolveUrl(url: String): DownloadUrl
    suspend fun resolveUrls(urls: List<String>): List<ResolvedUrl>
    fun download(source: DownloadSource, saveTo: File? = null, conflict: Conflict = Conflict.RENAME): DownloadTask
    suspend fun localPath(url: String): File
    suspend fun prepare(file: DRFile, kind: FileKind, original: Boolean = false): PreparedFile
    suspend fun clearImageCache()
    suspend fun groupFiles(groupId: String, cursor: String? = null, limit: Int? = null): GroupFilesPage
    suspend fun deleteGroupFile(groupId: String, fileId: String)
}

聊天室

使用规则与示例见相关章节。

ChatroomsModule

interface ChatroomsModule {
    suspend fun list(namePrefix: String? = null, cursor: String? = null, limit: Int? = null): DRPage<ChatroomListItem>
    suspend fun get(roomId: String): ChatroomInfo
    suspend fun create(name: String, description: String? = null, avatarUrl: String? = null, announcement: String? = null, maxMembers: Int? = null, listed: Boolean? = null): ChatroomInfo
    suspend fun onlineCounts(roomIds: List<String>): List<ChatroomOnlineCount>
    suspend fun enter(roomId: String, ext: String? = null, leaveOthers: Boolean = false): ChatroomHandle
    val entered: StateFlow<Map<String, ChatroomHandle>>
}

ChatroomHandle

interface ChatroomHandle {
    val roomId: String
    val snapshot: StateFlow<ChatroomSnapshot>
    val events: Flow<ChatroomEvent>
    fun <T : ChatroomEvent> on(type: KClass<T>): Flow<T>
    suspend fun send(content: OutgoingContent, priority: ChatroomPriority = ChatroomPriority.NORMAL, ext: JsonObject? = null): ChatroomMessageView
    fun like(count: Int = 1)
    suspend fun setAttributes(attributes: Map<String, String>, autoDelete: Boolean = false, force: Boolean = false): AttributeResult
    suspend fun removeAttributes(keys: List<String>, force: Boolean = false): AttributeResult
    suspend fun recall(messageId: String): Boolean
    suspend fun members(cursor: String? = null, limit: Int? = null): DRPage<ChatroomMember>
    suspend fun refresh()
    suspend fun leave()
    val manage: ChatroomManage
}

ChatroomManage

interface ChatroomManage {
    suspend fun update(patch: ChatroomPatch, version: Long? = null): ChatroomInfo
    suspend fun setMuteAll(on: Boolean)
    suspend fun setAdmin(username: String, admin: Boolean)
    suspend fun transferOwner(username: String)
    suspend fun mute(usernames: List<String>, duration: Duration? = null, reason: String? = null): List<ChatroomMemberResult>
    suspend fun unmute(usernames: List<String>): List<ChatroomMemberResult>
    suspend fun ban(usernames: List<String>, duration: Duration? = null, reason: String? = null): List<ChatroomMemberResult>
    suspend fun unban(usernames: List<String>): List<ChatroomMemberResult>
    suspend fun kick(usernames: List<String>): List<ChatroomMemberResult>
    val allowlist: ChatroomAllowlist
    suspend fun mutes(cursor: String? = null, limit: Int? = null): DRPage<ChatroomMuteEntry>
    suspend fun bans(cursor: String? = null, limit: Int? = null): DRPage<ChatroomBanEntry>
    suspend fun dismiss()
}

ChatroomAllowlist

interface ChatroomAllowlist {
    suspend fun list(cursor: String? = null, limit: Int? = null): DRPage<ChatroomAllowlistEntry>
    suspend fun add(usernames: List<String>): List<ChatroomMemberResult>
    suspend fun remove(usernames: List<String>): List<ChatroomMemberResult>
}

音视频

使用规则与示例见相关章节。

CallsModule

interface CallsModule {
    val supported: Boolean
    suspend fun start(media: CallMedia, target: CallTarget, ext: Map<String, String>? = null): CallHandle
    val current: StateFlow<CallHandle?>
    val incoming: StateFlow<List<CallHandle>>
    suspend fun get(callId: String): CallHandle
    suspend fun history(cursor: String? = null, limit: Int? = null): DRPage<CallSummary>
    suspend fun groupCall(groupId: String): CallHandle?
    fun groupCallBanner(groupId: String): GroupCallBanner?
}

CallHandle

interface CallHandle {
    val callId: String
    val snapshot: StateFlow<CallSnapshot>
    val tracks: StateFlow<CallTracks>
    val data: Flow<CallDataMessage>
    suspend fun join()
    suspend fun reject(reason: RejectReason = RejectReason.DECLINED)
    suspend fun hangup()
    suspend fun end()
    suspend fun invite(usernames: List<String>): List<CallInviteResult>
    suspend fun resume()
    suspend fun setMicrophoneEnabled(on: Boolean)
    suspend fun setCameraEnabled(on: Boolean)
    suspend fun sendData(data: ByteArray)
}

提醒设置

使用规则与示例见相关章节。

PushModule

interface PushModule {
    val settings: StateFlow<PushSettings?>
    suspend fun updateSettings(dnd: DndChange? = null, quietHours: QuietHoursChange? = null, preview: PreviewChange? = null): PushSettings
    suspend fun mute(target: MuteTarget, mode: MuteMode, duration: Duration? = null)
    suspend fun unmute(target: MuteTarget)
    fun getMute(target: MuteTarget): MuteInfo?
    fun shouldNotify(message: MessageView): NotifyDecision
}

在线状态

使用规则与示例见相关章节。

PresenceModule

interface PresenceModule {
    fun subscribe(usernames: List<String>): AutoCloseable
    fun get(username: String): PresenceState?
    suspend fun query(usernames: List<String>): List<PresenceState>
}

举报

使用规则与示例见相关章节。

ReportsModule

interface ReportsModule {
    suspend fun submit(target: ReportTarget, reason: ReportReason, description: String? = null): ReportSubmitResult
    suspend fun mine(cursor: String? = null, limit: Int? = null): DRPage<Report>
}

列表与文件任务

LiveList 的 snapshot 包含 items、hasMore、loading、error。ConversationList 继承 LiveList。上传和下载的 await 只是等待结果，真正取消需要 cancel。

LiveList

interface LiveList<T> : AutoCloseable {
    val snapshot: StateFlow<LiveListSnapshot<T>>
    suspend fun loadMore()
    override fun close()
}

UploadTask

interface UploadTask {
    val progress: StateFlow<Progress>
    suspend fun await(): FileInfo
    fun cancel()
}

DownloadTask

interface DownloadTask {
    val progress: StateFlow<Progress>
    suspend fun await(): java.io.File
    fun cancel()
}

原生推送

包为 com.deeprespond.im.push，依赖 im-push。接入、厂商配置及点击校验见离线推送。

DRPushController

interface DRPushController {
    suspend fun permission(): PushPermission
    suspend fun requestPermission(activity: ComponentActivity): PushPermission
    fun permissionContract(): ActivityResultContract<Unit, PushPermission>
    fun markPermissionRequested()
    fun shouldShowRationale(activity: Activity): Boolean
    val enabled: Boolean
    suspend fun setEnabled(enabled: Boolean)
    var language: String?
    suspend fun register()
    suspend fun currentRegistration(): PushDevice?
    val registrations: SharedFlow<PushRegistration>
    val opened: Flow<PushOpened>
    suspend fun takeLaunchOpen(): PushOpened?
    fun clearDeliveredNotifications()
    fun cancelNotification(tag: String)
    fun setBadge(count: Int?)
    fun openNotificationSettings(activity: Activity, channelId: String? = null)
    val channelStates: StateFlow<Map<String, Boolean>>
    fun isHibernationExempt(): Boolean
    fun openHibernationSettings(activity: Activity)
}

DRPush

fun of(client: DRClient): DRPushController?
fun handleRemoteMessage(context: Context, message: RemoteMessage): Boolean
fun handleRegistered(context: Context, installationId: String)
fun handleNewToken(context: Context, token: String)
fun handleDeletedMessages(context: Context)
fun handleUnregistered(context: Context, installationId: String)
fun handleIntent(intent: Intent?): Boolean

以上是 DRPush 的静态方法。handleRemoteMessage / handleIntent 返回 true 表示 SDK 已接管；业务只处理返回 false 的内容。

原生通话

包为 com.deeprespond.im.call，依赖 im-call。媒体权限、系统来电和视图使用见音视频。

DRCallController

interface DRCallController {
    val actions: Flow<CallAction>
    fun canUseFullScreenIntent(): Boolean
    fun openFullScreenIntentSettings(activity: Activity)
    fun callChannelEnabled(): Boolean
    fun intentCall(intent: Intent?): CallIntent?
}

DRCallUI 与设备扩展

// 静态入口
fun DRCallUI.of(client: DRClient): DRCallController?

// CallHandle 扩展
val CallHandle.audioEndpoints: StateFlow<AudioEndpoints>
suspend fun CallHandle.switchCamera()
suspend fun CallHandle.setSpeakerphoneOn(on: Boolean)
suspend fun CallHandle.setAudioEndpoint(endpoint: AudioEndpoint)

// 视频视图
DRCallVideoView(context: Context, attrs: AttributeSet? = null)
var scaleType: DRCallVideoView.ScaleType // FIT / FILL
var mirror: Boolean
fun bind(call: CallHandle, track: CallTrack?)
fun unbind()

文件、录音与图片扩展

// com.deeprespond.im
fun DRFile.Companion.fromUri(context: Context, uri: Uri, name: String? = null, mimeType: String? = null): DRFile
fun DRFile.Companion.fromFile(file: java.io.File, name: String? = null, mimeType: String? = null): DRFile
fun DRFile.Companion.fromBytes(bytes: ByteArray, name: String, mimeType: String? = null): DRFile
fun DRFile.withKeepMetadata(): DRFile

// com.deeprespond.im
suspend fun VoiceRecorder.start(context: Context, maxDuration: Duration = 60.seconds): Recording
val VoiceRecorder.isRecording: Boolean

录音任务和结果见数据类型。Coil 包为 com.deeprespond.im.coil：

DRImage(url: String, thumbnail: Boolean = false)
fun DRImage.Companion.of(message: MessageView, thumbnail: Boolean = false): DRImage?
fun DRImage.Companion.stableKey(url: String): String
fun ComponentRegistry.Builder.addDRImage(client: DRClient? = null): ComponentRegistry.Builder

使用方法见文件与录音。

Recording

interface Recording {
    val level: Flow<Float>
    val ended: Flow<VoiceRecordingEnd>
    suspend fun stop(): VoiceRecording
    fun cancel()
}

显示辅助

包为 com.deeprespond.im.render。以下为接收 Android DRClient 的常用重载：

fun displayName(client: DRClient, username: String?, groupId: String? = null, locale: DRLocale = DRLocale.zhCN): String
fun conversationTitle(client: DRClient, view: DRObject, locale: DRLocale = DRLocale.zhCN): String
fun summarize(client: DRClient, message: MessageView, groupId: String? = null, locale: DRLocale = DRLocale.zhCN): String
fun renderTip(client: DRClient, message: MessageView, groupId: String? = null, locale: DRLocale = DRLocale.zhCN): String
fun renderRecall(client: DRClient, message: MessageView, groupId: String? = null, locale: DRLocale = DRLocale.zhCN): String

另外两个显示入口：

fun renderCallRecord(message: DRObject, self: String, locale: DRLocale = DRLocale.zhCN): String
fun describeError(err: DRException, locale: DRLocale = DRLocale.zhCN): String

其他渲染重载可以直接接收对象和名称解析器。界面组合及生命周期见界面。

独立 RTC 频道

interface ChannelsModule {
    val supported: Boolean
    val current: StateFlow<ChannelHandle?>
    suspend fun get(channelId: String): RTCChannel
    suspend fun currentSession(): ChannelSession?
    suspend fun members(channelId: String, cursor: String? = null, limit: Int? = null): DRPage<ChannelParticipant>
    suspend fun join(channelId: String, options: ChannelJoinOptions = ChannelJoinOptions()): ChannelHandle
    suspend fun resume(channelId: String, sessionId: String): ChannelHandle
}
interface ChannelHandle {
    val channelId: String
    val sessionId: String
    val snapshot: StateFlow<ChannelSnapshot>
    val tracks: StateFlow<List<ChannelTrack>>
    suspend fun refresh()
    suspend fun setMicrophoneEnabled(on: Boolean)
    suspend fun setCameraEnabled(on: Boolean)
    suspend fun leave()
}

入口为 DRClient.channels: ChannelsModule。im-call 提供 DRChannelVideoView，其 bind(handle, track) / unbind() 负责画面渲染，结束页面仍须调用 leave。类型见数据类型，权限和生命周期见频道接入。