Android Glide limits onlyRetrieveFromCache to get the memory cache submit timeout blocking method, Kotlin

Android Glide limits onlyRetrieveFromCache to get the memory cache submit timeout blocking method, Kotlin

 

import android.os.Bundle
import android.util.Log
import android.widget.ImageView
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.lifecycleScope
import com.bumptech.glide.load.engine.DiskCacheStrategy
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import java.util.concurrent.TimeUnit

class MainActivity : AppCompatActivity() {
    private val TAG = "fly"

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val image = findViewById<ImageView>(R.id.image)

        val size = 1000
        val timeOut = 20L //20毫秒超时
        val ctx = this

        lifecycleScope.launch(Dispatchers.IO) {
            val bmp = kotlin.runCatching {
                GlideApp.with(ctx)
                    .asBitmap()
                    .onlyRetrieveFromCache(true)
                    .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
                    .centerCrop()
                    .load(android.R.drawable.stat_notify_error)
                    .override(size)
                    .submit()
                    .get(timeOut, TimeUnit.MICROSECONDS)
            }.onSuccess {
                Log.d(TAG, "onSuccess 取到缓存")
            }.onFailure {
                Log.d(TAG, "onFailure ${it}")
            }.getOrNull()

            withContext(Dispatchers.Main) {
                if (bmp == null) {
                    Log.d(TAG, "没取到缓存，启动新任务")

                    //取不到bmp缓存，启动新加载。
                    GlideApp.with(ctx)
                        .asBitmap()
                        .centerCrop()
                        .override(size)
                        .load(android.R.drawable.stat_notify_error)
                        .into(image)
                } else {
                    Log.d(TAG, "取到缓存 ${bmp.byteCount}")
                    //取到以往存在的bmp缓存。
                    image.setImageBitmap(bmp)
                }
            }
        }
    }
}

 

 

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