leca/barcode_scanner_for_employees
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image thumbnails generation

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leca
2024-10-02 01:55:46 +03:00
parent 229941e6de
commit ac5be50f2b
3 changed files with 25 additions and 10 deletions
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11
app/src/main/java/org/foxarmy/barcodescannerforemployees/AddProductFragment.kt
View File

@@ -1,8 +1,6 @@
package org.foxarmy.barcodescannerforemployees
import android.content.ContentValues
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.os.Build
import android.os.Bundle
import android.util.Log
@@ -12,7 +10,6 @@ import android.view.ViewGroup
import android.widget.Toast
import androidx.activity.result.contract.ActivityResultContracts
import androidx.annotation.RequiresApi
import androidx.core.graphics.scale
import androidx.fragment.app.Fragment
import androidx.navigation.fragment.findNavController
import com.google.mlkit.vision.barcode.common.Barcode
@@ -20,7 +17,6 @@ import com.google.mlkit.vision.codescanner.GmsBarcodeScannerOptions
import com.google.mlkit.vision.codescanner.GmsBarcodeScanning
import org.foxarmy.barcodescannerforemployees.databinding.AddProductFragmentBinding
import java.io.File
import java.io.FileOutputStream
import java.nio.file.Files
import java.nio.file.StandardCopyOption
@@ -51,12 +47,7 @@ class AddProductFragment : Fragment() {
val tempfile = File(requireContext().filesDir, "image.png")
val imageContent = tempfile.inputStream().readBytes()
val imageHash = imageContent.toString(Charsets.UTF_8).md5()
val thumbnailsDir = File(requireContext().cacheDir, "thumbnails")
thumbnailsDir.mkdirs()
val thumbnailFile = File(thumbnailsDir, "$imageHash.webp")
var img = BitmapFactory.decodeByteArray(imageContent, 0, imageContent.size)
img = img.scale(img.width/4,img.height/4)
img.compress(Bitmap.CompressFormat.WEBP_LOSSY, 25, FileOutputStream(thumbnailFile))
generateThumbnailForImage(context!!, imageHash)
pictureFile = File(picturesPath, "$imageHash.png")
Files.move(tempfile.toPath(), pictureFile.toPath(), StandardCopyOption.REPLACE_EXISTING)

1
app/src/main/java/org/foxarmy/barcodescannerforemployees/StorageFragment.kt
View File

@@ -42,6 +42,7 @@ class StorageFragment : Fragment() {
val netWeight = getDouble(getColumnIndexOrThrow(ProductContract.ProductEntry.PRODUCT_NET_WEIGHT))
val productImageHash = getString(getColumnIndexOrThrow(ProductContract.ProductEntry.IMAGE_FILENAME))
generateThumbnailForImage(context!!, productImageHash)
val abstractProduct = AbstractProductView(
requireActivity(),

23
app/src/main/java/org/foxarmy/barcodescannerforemployees/Utils.kt
View File

@@ -1,16 +1,39 @@
package org.foxarmy.barcodescannerforemployees
import android.app.Activity
import android.content.Context
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.net.Uri
import android.os.Build
import androidx.annotation.RequiresApi
import androidx.core.content.FileProvider
import androidx.core.graphics.scale
import com.google.firebase.components.BuildConfig
import java.io.File
import java.io.FileOutputStream
import java.security.MessageDigest
fun getImageUri(activity: Activity, imageFile: File): Uri? {
return FileProvider.getUriForFile(activity, BuildConfig.APPLICATION_ID + "." + activity.localClassName + ".provider", imageFile)
}
@RequiresApi(Build.VERSION_CODES.R)
fun generateThumbnailForImage(context: Context, imageHash: String) {
val thumbnailsDir = File(context.cacheDir, "thumbnails")
thumbnailsDir.mkdirs()
val picturesDir = File(context.filesDir, "pictures")
picturesDir.mkdirs()
val thumbnailFile = File(thumbnailsDir, "$imageHash.webp")
if (thumbnailFile.exists()) return
val imageFile = File(picturesDir, "$imageHash.png")
val imageContent = imageFile.inputStream().readBytes()
var img = BitmapFactory.decodeByteArray(imageContent, 0, imageContent.size)
img = img.scale(img.width/4,img.height/4)
img.compress(Bitmap.CompressFormat.WEBP_LOSSY, 25, FileOutputStream(thumbnailFile))
}
@OptIn(ExperimentalStdlibApi::class)
fun String.md5(): String {
val md = MessageDigest.getInstance("MD5")