android - 如何在 Kotlin-MVP 的 Adapter 类的 button.setOnClickListener 中显示 fragment 对话框？

Question

我正在使用这个 Kotlin-MVP 开发一个 Android 应用程序结构。我有一项 Activity ，它包含 4 个 fragment 的 TabLayout。所有 fragment 在 RecyclerView 中都有一个按钮。我需要在该按钮点击监听器上显示一个“fragment 对话框”。您能否告诉我如何在适配器类的按钮单击监听器上显示 fragment 对话框？请查看屏幕截图。

我正在访问 itemView.btn_accept.setOnClickListener 下面的 Adapter 类的点击监听器事件按钮:

class InApprovalAdapter(private val jobListItems: MutableList<JobItem>) : RecyclerView.Adapter<InApprovalAdapter.JobViewHolder>() {

private var _ProfileId: Long? = null;

fun getProfileId(): Long? {
    return _ProfileId
}

fun setProfileId(s: Long) {
    _ProfileId = s
}

private var _UserToken : String? = null;

fun getUserToken(): String? {
    return _UserToken
}

fun setUserToken(s: String) {
    _UserToken = s
}

private var _UserTypeId : Long? = null;
fun getUserTypeId(): Long? {
    return _UserTypeId
}

fun setUserTypeId(s: Long) {
    _UserTypeId = s
}


override fun getItemCount() = this.jobListItems.size

override fun onBindViewHolder(holder: JobViewHolder, position: Int) = holder.let {
    it.clear()
    it.onBind(position)
}

override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int) = JobViewHolder(LayoutInflater.from(parent?.context)
        .inflate(R.layout.item_inapproval_list, parent, false))

internal fun addJobsToList(jobs: List<JobItem>, profileId: Long?, userToken: String?, userTypeId: Long?) {
    this.jobListItems.addAll(jobs)
    setProfileId(profileId!!.toLong())
    setUserToken(userToken!!)
    setUserTypeId(userTypeId!!)
    notifyDataSetChanged()
}

inner class JobViewHolder(view: View) : RecyclerView.ViewHolder(view) {

    fun clear() {
        itemView.tv_job_id.text = "";
        itemView.tv_job_title.text= "";
        //itemView.tv_job_description.text ="";
        itemView.tv_job_category.text ="";
        itemView.tv_date_created.text ="";
    }

    fun onBind(position: Int) {

        val (jobId, name, description, serviceId, serviceName,
                address, engineerIds, engineerNames, startDateTimeUtc,
                startDateTimeLocal, endDateTimeUtc, endDateTimeLocal,
                customerId, customerName, customerMobile, customerAltMobile,
                priorityTypeId, priorityTypeName, statusTypeId, statusTypeName,
                isDeleted, isStatusTypeActive, createdBy, createdByName,
                dateCreatedPretty, modifiedBy, modifiedByName ,hasJobMedia,
                jobMedias, hasJobFeedback, jobDetailsImage, dateCreatedUtc, dateModifiedUtc) = jobListItems[position]

        inflateData(jobId, name,
                description,
                serviceId,
                serviceName,
                address,
                engineerIds,
                engineerNames,
                startDateTimeUtc,
                startDateTimeLocal,
                endDateTimeUtc,
                endDateTimeLocal,
                customerId,
                customerName,
                customerMobile,
                customerAltMobile,
                priorityTypeId,priorityTypeName,
                statusTypeId,
                statusTypeName,
                isDeleted,
                isStatusTypeActive,
                createdBy,
                createdByName,
                dateCreatedPretty,
                modifiedBy,
                modifiedByName ,
                hasJobMedia,
                jobMedias, hasJobFeedback, jobDetailsImage, dateCreatedUtc, dateModifiedUtc)
        setItemClickListener(jobId)
    }

    private fun setItemClickListener(jobId: Long?) {
        itemView.setOnClickListener {
            jobId?.let {
                try {
                    val intent = Intent(itemView.context, ServiceDetailActivity::class.java)
                    intent.putExtra("JobId", jobId)
                    itemView.context.startActivity(intent)
                } catch (e: Exception) {
                    Toast.makeText(itemView.context, e.message, Toast.LENGTH_LONG).show()
                }
            }
        }

        itemView.btn_accept.setOnClickListener {



        }

        itemView.btn_reject.setOnClickListener{

        }
    }
    private fun inflateData(jobId: Long?, name: String?, description: String?, serviceId: Long?, serviceName: String?, address: String?, engineerIds: String?,
                            engineerNames: String?, startDateTimeUtc: String?, startDateTimeLocal: String?, endDateTimeUtc: String?,
                            endDateTimeLocal: String?, customerId: Long?, customerName: String?, customerMobile:String?, customerAltMobile: String?,
                            priorityTypeId: Long?, priorityTypeName: String?, statusTypeId: Long?, statusTypeName: String?, isDeleted: Boolean?, isStatusTypeActive: Boolean?,
                            createdBy: Long?, createdByName: String?, dateCreatedPretty: String?, modifiedBy: Long?, modifiedByName: String?, hasJobMedia: Boolean?,
                            jobMedias: List<JobDetailsImage>?, hasJobFeedback: Boolean?, jobDetailsImage:  List<JobDetailsImage>?, dateCreatedUtc: String?, dateModifiedUtc: String?) {
        name.let {
            itemView.tv_job_title.text = it;
        }
        jobId.let {
            itemView.tv_job_id.text = "Job\n#" + it
        }
        /*description.let {
            itemView.tv_job_description.text = it
        }*/
        serviceName.let {
            itemView.tv_job_category.text = it
        }
        dateCreatedPretty.let {
            itemView.tv_date_created.text = it
        }

        if(getUserTypeId() == AppConstants.UserType.Administrator.type ||
                getUserTypeId() == AppConstants.UserType.Admin.type)
        {
            itemView.btn_reject.text = "Reject";
        }
        else
        {
            itemView.btn_reject.text = "Delete";
            itemView.btn_accept.visibility = View.GONE
        }
    }

    private fun callJobStatusChangeApi(jobId: Long?, statusTypeId: Long?)
    {
        val androidId = Settings.Secure.getString(itemView.context.contentResolver, Settings.Secure.ANDROID_ID)

        Rx2AndroidNetworking.post(ApiEndPoint.ENDPOINT_JOB_CHANGEJOBSTATUS)
                .addHeaders("Authorization", "bearer " + getUserToken())
                .addQueryParameter("profileId",  getProfileId().toString())
                .addQueryParameter("jobId", jobId.toString())
                .addQueryParameter("statusTypeId", statusTypeId.toString())
                .addQueryParameter("DeviceId", androidId.toString())
                .build()
                .getAsObject(BaseResponse::class.java, object : ParsedRequestListener<BaseResponse> {

                    override fun onResponse(baseResponse: BaseResponse) {
                        // do anything with response
                        println("succeeded : " + baseResponse.succeeded)
                        println("message : " + baseResponse.message)

                        if(baseResponse.succeeded)
                        {
                            val inApprovalFragment : InApprovalFragment = InApprovalFragment()
                            inApprovalFragment.showStatusSubmissionSuccessMessage(itemView.context, baseResponse.message);
                            notifyDataSetChanged();
                        }
                    }

                    override fun onError(anError: ANError) {
                        // handle error
                        println(anError.message);
                    }

                })
    }

}

}

Answer 1

如果您在访问 FragmentManager 时遇到问题，您可以简单地将一个 lambda 作为接受按钮的 OnClickListener 传递给您的适配器:

class InApprovalAdapter(
    private val jobListItems: MutableList<JobItem>
    // If you have data to pass to the handler(like a jobId for example) 
    // modify the lambda like (Int) -> Unit
    private val acceptHandler: () -> Unit
    ) : RecyclerView.Adapter<InApprovalAdapter.JobViewHolder>() {

然后你可以使用那个 lambda:

itemView.btn_accept.setOnClickListener {
     acceptHandler()
}

然后创建适配器:

val adapter = InApprovalAdapter(theListOfItems, val clickListener: (Item) -> Unit) {
    // I'm assuming you're creating this adapter inside the Fragment class
    // so at this point you can access getFragmentManager()
    // ideally you'll let the presenter know that something happened in the view: presenter.userAcceptedJob()
    // and the presenter will call back a method on the view to actually show the DialogFragment.
}