Kotlin高仿微信-第4篇-主页-消息

Kotlin高仿微信-项目实践58篇详细讲解了各个功能点，包括：注册、登录、主页、单聊(文本、表情、语音、图片、小视频、视频通话、语音通话、红包、转账)、群聊、个人信息、朋友圈、支付服务、扫一扫、搜索好友、添加好友、开通VIP等众多功能。

Kotlin高仿微信-项目实践58篇，点击查看详情

效果图：

实现代码：

/**
 * author : wangning
 * email : maoning20080809@163.com
 * Date : 2022/4/7 13:13
 * description : 主页消息页面
 */
class WeChatFragment : BaseDataBindingFragment(){

    override fun getLayoutRes()  = R.layout.wc_fragment_wechat

    val chatViewModel : ChatViewModel by viewModels()

    private var adapter = WeChatAdapter()
    private var account = ""

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        var layoutManager = LinearLayoutManager(requireContext())
        layoutManager.orientation = LinearLayoutManager.VERTICAL
        wechat_recyclerview.layoutManager =  layoutManager
        wechat_recyclerview.adapter = adapter

        account = DataStoreUtils.getAccount()
        chatViewModel.getLastChatByName(account)
        chatViewModel.chatTempListLiveData.observe(viewLifecycleOwner){
            adapter.refresh(it)
        }

        //点击
        adapter.setOnItemClickInterface(object : WcOnItemClickInterface{
            override fun onItemClick(obj: Any) {

                var chatBean : ChatTempBean?
                if(obj is ChatTempBean){
                    chatBean = obj
                } else {
                    return
                }

                var bundle = bundleOf(ChatFragment.USER_ID to chatBean.account)
                Navigation.findNavController(wechat_recyclerview).navigate(R.id.nav_chat, bundle)
            }
        })

        //长按
        adapter.setOnItemLongClickInterface(object : WcOnItemLongClickInterface{
            override fun onItemLongClick(position: Int) {
                showDeleteDialog(position)
            }
        })

    }


    private var baseDialogUtils : BaseDialogUtils? = null

    //显示删除对话框
    fun showDeleteDialog(position : Int){
        var view = LayoutInflater.from(this.requireActivity()).inflate(R.layout.wc_chat_delete_tip, null)
        baseDialogUtils = BaseDialogUtils(this.requireActivity())
        baseDialogUtils!!.builder()
            .showView(view)
            .setCancelable(false)
            .setOnLoadingClick(object : BaseDialogUtils.OnLoadingClick{
                override fun onClickCancel() {

                }

                override fun onClickConfirm() {
                    var chatTempBean = adapter.getItemObject(position)
                    if(chatTempBean!=null){
                        chatViewModel.deleteChatByFromAndToAccount(account, chatTempBean.account)
                    }
                    adapter.remove(position)
                }
            })
        baseDialogUtils?.show()
    }

    //刷新
    fun refresh(){
        var account = DataStoreUtils.getAccount()
        chatViewModel.getLastChatByName(account)
    }

}

/**
 * Author : wangning
 * Email : maoning20080809@163.com
 * Date : 2022/4/28 12:06
 * Description :
 */
class WeChatAdapter : RecyclerView.Adapter() {

    private var chatList = ArrayList()

    private var wcOnItemClickInterface : WcOnItemClickInterface? = null
    private var wcOnItemLongClickInterface : WcOnItemLongClickInterface? = null

    fun setOnItemClickInterface(onItemClickInterface: WcOnItemClickInterface){
        this.wcOnItemClickInterface = onItemClickInterface
    }

    fun setOnItemLongClickInterface(onItemLongClickInterface: WcOnItemLongClickInterface){
        this.wcOnItemLongClickInterface = onItemLongClickInterface
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): WeChatViewHolder {
        var view = LayoutInflater.from(parent.context).inflate(R.layout.wc_wechat_item, parent, false)
        return WeChatViewHolder(view)
    }

    override fun onBindViewHolder(holder: WeChatViewHolder, position: Int) {
        var chatBean = chatList.get(position)
        //holder.nameTextView.text = chatBean.name
        holder.contentTextView.text = chatBean.content

        //GlideUtils.load(holder.avatarImageView, chatBean.avatar, R.drawable.wc_avatar_default)

        BaseUtils.showAvatarRounded(chatBean.account, holder.avatarImageView, holder.nameTextView, BaseUtils.getDimension(R.dimen.distance_4), R.drawable.wc_avatar_default)


        holder.rootLayout.setOnClickListener {
            wcOnItemClickInterface?.onItemClick(chatBean)
        }

        holder.rootLayout.setOnLongClickListener {
            wcOnItemLongClickInterface?.onItemLongClick(position)
            true
        }
    }

    fun getItemObject(position : Int) : ChatTempBean? = chatList?.get(position)

    //删除某个
    fun remove(position: Int){
        this.chatList?.removeAt(position)
        notifyDataSetChanged()
    }


    //刷新页面
    fun refresh(chatList : ArrayList){
        this.chatList = chatList
        notifyDataSetChanged()
    }

    override fun getItemCount() = chatList.size

    class WeChatViewHolder(itemView : View) : RecyclerView.ViewHolder(itemView) {

        var avatarImageView = itemView.findViewById(R.id.wechat_item_avatar)
        var nameTextView = itemView.findViewById(R.id.wechat_item_name)
        var contentTextView = itemView.findViewById(R.id.wechat_item_content)
        var rootLayout = itemView.findViewById(R.id.wechat_item_layout)
    }
}