Kotlin高仿微信-第52篇-搜索好友

  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 : 2022/4/21 21:18
 * Description : 根据账户搜索用户
 */
class SearchFriendsFragment : BaseDataBindingFragment() {

    override fun getLayoutRes() = R.layout.wc_fragment_contacts_search

    private val xmppViewModel : XmppViewModel by viewModels()
    private val userViewModel : UserViewModel by viewModels()
    private val contactViewModel : ContactsViewModel by viewModels()

    private var adapter : SearchContactsAdapter? = null
    //好友列表
    private var contactsList : MutableList? = null
    private var navController : NavController? = null

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

        super.builder().setTitleContent("")
        navController = findNavController()
        contacts_search_cancel.setOnClickListener {
            Navigation.findNavController(it).popBackStack()
        }

        var account = DataStoreUtils.getAccount()
        contacts_search_result_layout.setOnClickListener {
            TagUtils.d("搜索查询：${contacts_search_phone.text.toString()}")
            //xmppViewModel.searchUserByName(contacts_search_phone.text.toString())
            userViewModel.getUserLikeAccount(account, contacts_search_phone.text.toString())
        }

        contacts_search_phone.addTextChangedListener(object : TextWatcher{
            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
            }

            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
                //TagUtils.d("onTextChanged ${s}, , count = ${count}, length = ${s?.length}")
                if(s?.length!! > 0){
                    var result = getString(R.string.wc_search_friend_tips, s)
                    contacts_search_result_layout.visibility = View.VISIBLE
                    contacts_search_result_txt.text = result
                } else {
                    contacts_search_result_layout.visibility = View.GONE
                    contacts_search_recycler_view.visibility = View.GONE
                }
            }

            override fun afterTextChanged(s: Editable?) {
            }
        })

        userViewModel.getUserListLiveData.observe(viewLifecycleOwner){
            if(it == null || it.size < 1){
                ToastUtils.makeText(R.string.search_list_empty)
            } else {
                contacts_search_recycler_view.visibility = View.VISIBLE
                adapter?.refresh(it)
            }
        }

        contactViewModel.getContactsList(account)
        contactViewModel.contactsListLiveData.observe(viewLifecycleOwner){
            contactsList = it
        }

        /*xmppViewModel.userListDataLiveData.observe(viewLifecycleOwner){
            contacts_search_recycler_view.visibility = View.VISIBLE
            adapter?.refresh(it)
        }*/

        adapter = SearchContactsAdapter()
        var linearLayoutManager = LinearLayoutManager(activity)
        linearLayoutManager.orientation = LinearLayoutManager.VERTICAL
        contacts_search_recycler_view.layoutManager = linearLayoutManager
        contacts_search_recycler_view.adapter = adapter
        adapter?.setOnItemClickInterface(object : SearchContactsAdapter.OnItemClickInterface{
            override fun onItemClick(userBean: UserBean) {
                SoftInputUtils.hideSoftInput(contacts_search_result_layout)
                navController?.popBackStack(R.id.nav_contacts_add_friends, true)
                if(isFriend(userBean.account)) {
                    //如果是好友，直接跳转到聊天页面
                    var bundle = bundleOf(ChatFragment.USER_ID to userBean.account)
                    navController?.navigate(R.id.nav_chat, bundle)
                } else {
                    val bundle = bundleOf("userbean" to userBean)
                    navController?.navigate(R.id.action_contacts_search_friends_details, bundle)
                }

            }
        })

    }

    private fun isFriend(searchAccount : String) : Boolean{
        var resultList = contactsList?.filter {
            it.toAccount.equals(searchAccount)
        }
        return resultList?.size!! > 0
    }

}

/**
 * Author : wangning
 * Email : maoning20080809@163.com
 * Date : 2022/4/22 17:51
 * Description :
 */
class SearchContactsAdapter : RecyclerView.Adapter(){

    private var userList = ArrayList()
    private var onItemClickInterface :OnItemClickInterface? = null
    fun setOnItemClickInterface(onItemClickInterface :OnItemClickInterface?){
        this.onItemClickInterface = onItemClickInterface
    }

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

    override fun onBindViewHolder(holder: SearchViewHolder, position: Int) {
        var userBean = userList.get(position)
        holder.account.text = BaseUtils.getString(R.string.wc_search_friend_account, userBean.account)

        holder.account.setOnClickListener {
            onItemClickInterface?.onItemClick(userBean)
        }
    }

    fun refresh(userList : ArrayList) {
        if(userList == null || userList.size == 0){
            this.userList = ArrayList()
        } else {
            this.userList = userList
        }
        notifyDataSetChanged()
    }

    override fun getItemCount(): Int  = userList?.size

    class SearchViewHolder(itemView : View) : RecyclerView.ViewHolder(itemView) {
        var account = itemView.findViewById(R.id.contacts_search_item_account)
    }

    interface OnItemClickInterface{
        abstract fun onItemClick(userBean: UserBean)
    }
}