Android RecyclerView measureTimeMillis Glide GridLayoutManager,kotlin

Android RecyclerView measureTimeMillis Glide GridLayoutManager,kotlin

implementation 'com.github.bumptech.glide:glide:4.15.1'

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.GridLayoutManager
import androidx.recyclerview.widget.RecyclerView

class MainActivity : AppCompatActivity() {
    companion object {
        val TAG = "fly"
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val recyclerView: RecyclerView = findViewById(R.id.recyclerview)
        val layoutManager = GridLayoutManager(this, 5)
        recyclerView.setLayoutManager(layoutManager)
        var photoAdapter = PhotoAdapter(this)
        recyclerView.setAdapter(photoAdapter)

        //recyclerView.setHasFixedSize(true)
        //recyclerView.setItemViewCacheSize(100)
    }
}


import android.content.Context
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import com.bumptech.glide.Glide
import kotlin.system.measureTimeMillis

class PhotoAdapter(private val context: Context) : RecyclerView.Adapter() {

    private fun createView(parent: ViewGroup): View {
        var view: View?
        val time = measureTimeMillis {
            view = LayoutInflater.from(parent.context).inflate(R.layout.item, parent, false)
        }
        Log.d(MainActivity.TAG, "$time @createView")
        return view!!
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PhotoHolder {
        var holder: PhotoHolder?

        val time = measureTimeMillis {
            holder = PhotoHolder(createView(parent))
        }
        Log.d(MainActivity.TAG, "$time @onCreateViewHolder")

        return holder!!
    }

    override fun onBindViewHolder(holder: PhotoHolder, pos: Int) {
        val time = measureTimeMillis {
            bindHolder(holder, pos)
        }
        Log.d(MainActivity.TAG, "$time @onBindViewHolder")
    }

    private fun bindHolder(holder: PhotoHolder, pos: Int) {
        var resId: Int?
        when (pos % 2) {
            0 -> {
                resId = R.drawable.ic_launcher_foreground
            }

            else -> {
                resId = R.drawable.ic_launcher_background
            }
        }

        Glide.with(context).load(resId).into(holder.image)
        //holder.image.setImageResource(resId)
        holder.pos.setText("$pos")
        holder.text.setText("-$pos-")
    }

    override fun getItemCount(): Int {
        return Int.MAX_VALUE
    }
}




    

    

    

    

Android RecyclerView measureTimeMillis Glide GridLayoutManager,kotlin_第1张图片

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