如何将相机或galery拍摄的图像添加到按钮？

// 1. 添加权限

// AndroidManifest.xml
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

// 2. 布局文件中添加按钮

<Button
    android:id="@+id/imageButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/button_background"
    android:onClick="selectImageFromCameraOrGallery" />

// 3. 调用相机或图库

private val CAMERA_REQUEST_CODE = 1
private val GALLERY_REQUEST_CODE = 2

fun selectImageFromCameraOrGallery(view: View) {
    val intent = Intent()
    intent.type = "image/*"
    intent.action = Intent.ACTION_GET_CONTENT

    val chooser = Intent.createChooser(intent, "Select Image")
    chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, arrayOf(getCameraIntent()))

    startActivityForResult(chooser, GALLERY_REQUEST_CODE)
}

private fun getCameraIntent(): Intent? {
    val cameraIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
    if (cameraIntent.resolveActivity(packageManager) != null) {
        val storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES)
        val imageFile = File.createTempFile("image_", ".jpg", storageDir)
        val imageUri = FileProvider.getUriForFile(this, "com.example.fileprovider", imageFile)

        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri)
        return cameraIntent
    }
    return null
}

// 4. 处理选中的图像

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    if (resultCode == Activity.RESULT_OK) {
        when (requestCode) {
            CAMERA_REQUEST_CODE -> {
                val imageView = findViewById<Button>(R.id.imageButton)
                imageView.background = BitmapDrawable(resources, getCameraPhoto())
            }
            GALLERY_REQUEST_CODE -> {
                val imageView = findViewById<Button>(R.id.imageButton)
                val selectedImageUri = data?.data
                imageView.background = BitmapDrawable(resources, selectedImageUri)
            }
        }
    }
}

private fun getCameraPhoto(): Bitmap? {
    val storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES)
    val imageFile = File(storageDir, "image_.jpg")
    return BitmapFactory.decodeFile(imageFile.absolutePath)
}