add ImageSelectionButton

app/src/main/java/com/smarttoolfactory/composecolordetector/ImageSelectionButton.kt

@@ -0,0 +1,52 @@
+package com.smarttoolfactory.composecolordetector
+
+import android.annotation.SuppressLint
+import android.graphics.Bitmap
+import android.graphics.ImageDecoder
+import android.os.Build
+import android.provider.MediaStore
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.compose.material.Icon
+import androidx.compose.material3.FloatingActionButton
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import com.google.modernstorage.photopicker.PhotoPicker
+
+@SuppressLint("UnsafeOptInUsageError")
+@Composable
+fun ImageSelectionButton(onImageSelected: (ImageBitmap) -> Unit) {
+ val context = LocalContext.current
+
+ val photoPicker =
+ rememberLauncherForActivityResult(PhotoPicker()) { uris ->
+ val uri = uris.firstOrNull() ?: return@rememberLauncherForActivityResult
+
+ val bitmap: Bitmap = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+ ImageDecoder.decodeBitmap(
+ ImageDecoder.createSource(context.contentResolver, uri)
+ ) { decoder, info, source ->
+ decoder.allocator = ImageDecoder.ALLOCATOR_SOFTWARE
+ decoder.isMutableRequired = true
+ }
+ } else {
+ MediaStore.Images.Media.getBitmap(context.contentResolver, uri)
+ }
+
+ onImageSelected(bitmap.asImageBitmap())
+
+ }
+
+ FloatingActionButton(
+ onClick = {
+ photoPicker.launch(PhotoPicker.Args(PhotoPicker.Type.IMAGES_ONLY, 1))
+ },
+ ) {
+ Icon(
+ painter = painterResource(id = R.drawable.ic_baseline_add_a_photo_24),
+ contentDescription = null
+ )
+ }
+}