时间戳

首页 > 解决方案 > 如何在 Kotlin-MVP 的 Adapter 类的 button.setOnClickListener 中显示片段对话框？

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

问题描述

我正在使用这种Kotlin-MVP结构开发一个 Android 应用程序。我有一个活动，它包含 4 个片段的 TabLayout。所有片段在 RecyclerView 中都有一个按钮。我需要在该按钮单击侦听器上显示一个“片段对话框”。你能告诉我如何在适配器类的按钮单击侦听器上显示片段对话框吗？请查看屏幕截图。

在此处输入图像描述

我正在从下面的适配器类中访问单击侦听器事件的按钮itemView.btn_accept.setOnClickListener：

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);
                    }

                })
    }

}

}

标签： androidandroid-fragmentsandroid-recyclerviewkotlinandroid-mvp

解决方案

如果您在访问 FragmentManager 时遇到问题，您可以简单地将 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.
}

推荐阅读