An example of image picker in jetpack compose, the image is diplayed using Coil library.

AndroidImagePicker.kt

//make sure your target sdk is 33+ and androidx.activity:activity-compose dependency is updated
                var imageUri by remember {
                    mutableStateOf<Uri?>(null)
                }
                val imageLauncher = rememberLauncherForActivityResult(
                    contract = ActivityResultContracts.PickVisualMedia(),
                    onResult = { uri -> imageUri = uri }
                )
                Column(modifier = Modifier.fillMaxSize(), verticalArrangement = Arrangement.Center, horizontalAlignment = Alignment.CenterHorizontally) {
                    Button(onClick = {
                        imageLauncher.launch(
                            PickVisualMediaRequest(ActivityResultContracts.PickVisualMedia.ImageAndVideo)
                        )
                    }) {
                        Text(text = "Pick an Image")
                    }
                    AsyncImage(
                        model = imageUri,
                        contentDescription = "image"
                    )
                }