add image selection button

Author: SmartToolFactory

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

@@ -0,0 +1,59 @@
+package com.smarttoolfactory.composeimage
+
+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.icons.Icons
+import androidx.compose.material.icons.filled.Add
+import androidx.compose.material3.FloatingActionButton
+import androidx.compose.material3.FloatingActionButtonDefaults
+import androidx.compose.material3.FloatingActionButtonElevation
+import androidx.compose.material3.Icon
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.ImageBitmap
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.platform.LocalContext
+import com.google.modernstorage.photopicker.PhotoPicker
+
+@SuppressLint("UnsafeOptInUsageError")
+@Composable
+fun ImageSelectionButton(
+    elevation: FloatingActionButtonElevation = FloatingActionButtonDefaults.elevation(),
+    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(
+        elevation = elevation,
+        onClick = {
+            photoPicker.launch(PhotoPicker.Args(PhotoPicker.Type.IMAGES_ONLY, 1))
+        },
+    ) {
+        Icon(
+            imageVector = Icons.Default.Add,
+            contentDescription = null
+        )
+    }
+}