您如何解决滑行错误？

时间：2020-08-26 18:59:10

标签： android firebase kotlin messaging android-glide

我正在编写一个聊天应用程序，而我的用户可以互相发送文本/图片（保存在Firebase中）。我正在使用Glide将图片从Firebase上传到ImageView。图片正确上传;但是，这些文本将作为我的图片的占位符上传。

有关更多信息： 在短信中，通常您会看到对手的文字（包括文字和图像），并且会看到自己的文字（文字和图像）。但是，在这种情况下，我只能看到图像。应该包含单词的文本将替换为占位符图像。

代码 

package com.example.realtimechat.chats

import android.content.Context
import android.content.Intent
import android.net.Uri
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.LinearLayout
import android.widget.TextView
import androidx.constraintlayout.widget.ConstraintLayout
import androidx.recyclerview.widget.RecyclerView
import com.bumptech.glide.Glide
import com.example.realtimechat.R
import com.example.realtimechat.common.Constants
import com.example.realtimechat.common.Extras
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.storage.FirebaseStorage
import java.text.SimpleDateFormat

class MessagesAdapter(private val context: Context,
                      private val messageList: List<MessageModel> = mutableListOf()): RecyclerView.Adapter<MessagesAdapter.MessageViewHolder>() {


    private lateinit var mAuth: FirebaseAuth

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MessagesAdapter.MessageViewHolder {
        val view: View = LayoutInflater.from(context).inflate(R.layout.custom_message_layout, parent, false)
        return MessageViewHolder(view)
    }

    override fun onBindViewHolder(holder: MessagesAdapter.MessageViewHolder, position: Int) {
        val message: MessageModel = messageList[position]
        mAuth = FirebaseAuth.getInstance()

        val currentUserId = mAuth.currentUser!!.uid
        val fromUserId = message.MessageFrom

        val sfd: SimpleDateFormat = SimpleDateFormat("dd-MM-yyyy HH:mm")
        val dateTime = sfd.format(message.MessageTime)

        val splitString: Array<String> = dateTime.split(" ").toTypedArray()
        val messageTime = splitString[1]

        Log.i("message time:", messageTime)

        if(fromUserId == currentUserId){
            if(message.MessageType.equals(Constants.MESSAGE_TYPE_TEXT)){
                holder.llSent.visibility = View.VISIBLE
                holder.llSentImage.visibility = View.GONE
            }else{
                holder.llSent.visibility = View.GONE
                holder.llSentImage.visibility = View.VISIBLE
            }

            holder.llReceived.visibility = View.GONE
            holder.llReceivedImage.visibility = View.GONE

            holder.tvSentMessage.text = message.Message
            holder.tvSentMessageTime.text = messageTime
            holder.tvImageSentTime.text = messageTime
            Glide.with(context)
                .load(message.Message)
                .placeholder(R.drawable.ic_image)
                .into(holder.ivSent)
        }else{
            if(message.MessageType.equals(Constants.MESSAGE_TYPE_TEXT)){
                holder.llReceived.visibility = View.VISIBLE
                holder.llReceivedImage.visibility = View.GONE
            }else{
                holder.llReceived.visibility = View.GONE
                holder.llReceivedImage.visibility = View.VISIBLE
            }

            holder.llSent.visibility = View.GONE
            holder.llSentImage.visibility = View.GONE

            holder.tvReceivedMessage.text = message.Message
            holder.tvReceivedMessageTime.text = messageTime
            holder.tvImageReceivedTime.text = messageTime
            Glide.with(context)
                .load(message.Message)
                .placeholder(R.drawable.ic_image)
                .into(holder.ivReceived)
        }

        holder.clMessage.setTag(R.id.TAG_MESSAGE, message.Message)
        holder.clMessage.setTag(R.id.TAG_MESSAGE_ID, message.Message)
        holder.clMessage.setTag(R.id.TAG_MESSAGE_TYPE, message.Message)

        holder.clMessage.setOnClickListener{view ->
            val messageType: String = view.getTag(R.id.TAG_MESSAGE_TYPE).toString()
            val uri: Uri = Uri.parse(view.getTag(R.id.TAG_MESSAGE_TYPE).toString())
            if(messageType == Constants.MESSAGE_TYPE_VIDEO){
                val intent = Intent(Intent.ACTION_VIEW, uri)
                intent.setDataAndType(uri, "video/mp4")
                context.startActivity(intent)
            }else if(messageType == Constants.MESSAGE_TYPE_IMAGE){
                val intent = Intent(Intent.ACTION_VIEW, uri)
                intent.setDataAndType(uri, "image/jpg")
                context.startActivity(intent)
            }
        }
    }

    override fun getItemCount(): Int {
        return messageList.size
    }

    inner class MessageViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        val llSent: LinearLayout = itemView.findViewById(R.id.llSent)
        val llReceived: LinearLayout = itemView.findViewById(R.id.llReceived)
        val llSentImage: LinearLayout = itemView.findViewById(R.id.llSentImage)
        val llReceivedImage: LinearLayout = itemView.findViewById(R.id.llReceivedImage)
        val tvSentMessage: TextView = itemView.findViewById(R.id.tvSentMessage)
        val tvSentMessageTime: TextView = itemView.findViewById(R.id.tvSentMessageTime)
        val tvReceivedMessage: TextView = itemView.findViewById(R.id.tvReceivedMessage)
        val tvReceivedMessageTime: TextView = itemView.findViewById(R.id.tvReceivedMessageTime)
        val ivSent: ImageView = itemView.findViewById(R.id.ivSent)
        val ivReceived: ImageView = itemView.findViewById(R.id.ivReceived)
        val tvImageSentTime: TextView = itemView.findViewById(R.id.tvSentImageTime)
        val tvImageReceivedTime: TextView = itemView.findViewById(R.id.tvReceivedImageTime)
        val clMessage: ConstraintLayout = itemView.findViewById(R.id.clMessage)

    }

}

XML 

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/clMessage"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <LinearLayout
        android:id="@+id/llSent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="4dp"
        android:layout_marginEnd="8dp"
        android:orientation="horizontal"
        android:visibility="gone"
        android:background="@drawable/sent_message_background"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:visibility="visible">

        <TextView
            android:id="@+id/tvSentMessage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="0"
            android:padding="12dp"
            android:textColor="@android:color/white"
            android:autoLink="all"
            android:textColorLink="@android:color/holo_blue_bright"
            tools:text="What's up man" />

        <TextView
            android:id="@+id/tvSentMessageTime"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            tools:text="10:00"
            android:layout_gravity="bottom"
            android:textSize="12sp"
            android:layout_marginEnd="4dp"/>
    </LinearLayout>

    <LinearLayout
        android:id="@+id/llSentImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_marginEnd="8dp"
        android:layout_marginTop="4dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/llSent"
        android:visibility="gone"
        tools:visibility="visible">

        <ImageView
            android:id="@+id/ivSent"
            android:layout_width="90dp"
            android:layout_height="100dp"
            android:background="@drawable/sent_message_background"
            android:src="@drawable/ic_image"
            android:contentDescription="Sent Image" />

        <TextView
            android:id="@+id/tvSentImageTime"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            tools:text="10:00"
            android:layout_gravity="bottom|end"
            android:textSize="12sp"
            android:layout_marginEnd="4dp"/>
    </LinearLayout>
    
    <LinearLayout
        android:id="@+id/llReceived"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="4dp"
        android:layout_marginStart="8dp"
        android:orientation="horizontal"
        android:visibility="gone"
        android:background="@drawable/received_message_background"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/llSent"
        tools:visibility="visible">

        <TextView
            android:id="@+id/tvReceivedMessage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="0"
            android:padding="12dp"
            android:autoLink="all"
            android:textColorLink="@android:color/holo_blue_bright"
            tools:text="What's up man" />

        <TextView
            android:id="@+id/tvReceivedMessageTime"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            tools:text="10:00"
            android:layout_gravity="bottom"
            android:textSize="12sp"
            android:layout_marginEnd="4dp"/>
    </LinearLayout>
    
    <LinearLayout
        android:id="@+id/llReceivedImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_marginStart="8dp"
        android:layout_marginTop="4dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/llReceived"
        android:visibility="gone"
        tools:visibility="visible">

        <ImageView
            android:id="@+id/ivReceived"
            android:layout_width="90dp"
            android:layout_height="100dp"
            android:background="@drawable/received_message_background"
            android:src="@drawable/ic_image"
            android:contentDescription="Received Image"/>

        <TextView
            android:id="@+id/tvReceivedImageTime"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            tools:text="10:00"
            android:layout_gravity="bottom"
            android:textSize="12sp"
            android:layout_marginEnd="4dp"/>
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

问题 出现 ：具体出现在OnBindViewHolder功能中： 

Glide.with(context)
                .load(message.Message)
                .placeholder(R.drawable.ic_image)
                .into(holder.ivSent)

和 

Glide.with(context)
                .load(message.Message)
                .placeholder(R.drawable.ic_image)
                .into(holder.ivReceived)

我使用Logcat来了解更多详细信息。 message.Message返回了正确的值，只是文本值正在从可绘制文件夹中转换为图像。

PS 。logcat错误消息告诉我找不到该文件。据我所知，这是因为在执行Glide.with(context).load(message.Message)时，系统正在尝试查找文本的图像文件，该文件不可用，因为只有文本。 （如果我错了，请纠正我）

任何解决方案将不胜感激！

1 个答案:

答案 0 :(得分：0)

尝试

    Glide.with(holder.ivReceived)
            .load(message.Message)
            .placeholder(R.drawable.ic_image)
            .into(holder.ivReceived);
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