安卓获取相册图片，适配Android Q
创建 registerForActivityResult 来打开相册
val getPhoto = registerForActivityResult(ActivityResultContracts.StartActivityForResult()){ result-> if(result.resultCode == Activity.RESULT_OK){ //image 就是 imageView控件 image.setImageBitmap(result.data?.let { CameraUtils.getImageBitMapApi29Down(it,this) }) } } button.setOnClickListener { getPhoto.launch(Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)) } 复制代码CameraUtils 实现，代码很简单就不做讲解了
/** * Camera utils * @constructor Create empty Camera utils */ object CameraUtils { /** * Get the picture you want to show * * This is more recommended when your application Api version is **greater** than **29** * @param data The [Intent] returned after opening the picture selection * @param context * @return */ @RequiresApi(Build.VERSION_CODES.Q) fun getImageBitMapApi29Above(data: Intent, context: Context?): Bitmap? { val uri = data.data var image: Bitmap? = null if(uri != null) { context?.contentResolver?.openFileDescriptor(uri, "r")?.use { pfd -> image = BitmapFactory.decodeFileDescriptor(pfd.fileDescriptor) } } return image } /** * Get the picture you want to show * * This is more recommended when your application Api version is **less** than **29** * @param data The [Intent] returned after opening the picture selection * @param context * @return */ fun getImageBitMapApi29Down(data: Intent, context: Context?):Bitmap? { val imagePath = getImagePathApi29Down(data, context) return if (imagePath != null) { BitmapFactory.decodeFile(imagePath) }else null } /** * Read pictures from album * @param data The [Intent] returned after opening the picture selection * @param context * @return */ private fun getImagePathApi29Down(data: Intent, context: Context?): String? { val uri = data.data if(uri == null){ return null }else{ var imagePath: String? = null if (DocumentsContract.isDocumentUri(context, uri)) { // If it is a document type Uri, it will be processed by document id val docId = DocumentsContract.getDocumentId(uri) if ("com.android.providers.media.documents" == uri.authority) { val id = docId.split(":").toTypedArray()[1] // Parse the id in digital format val selection = MediaStore.Images.Media._ID + "=" + id imagePath = getImageSpecifiedPathApi29Down(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection, context) } else if ("com.android.providers.downloads.documents" == uri.authority) { val contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), java.lang.Long.valueOf(docId)) imagePath = getImageSpecifiedPathApi29Down(contentUri, null, context) } } else if ("content".equals(uri.scheme, ignoreCase = true)) { // If it is a content type Uri imagePath = getImageSpecifiedPathApi29Down(uri, null, context) } else if ("file".equals(uri.scheme, ignoreCase = true)) { // If it is a file type Uri, just get the image path directly imagePath = uri.path } return imagePath } } /** * Query whether there is a picture with a specified path in the gallery * @param uri Path URI * @param selection Filter condition * @param context * @return */ private fun getImageSpecifiedPathApi29Down(uri: Uri?, selection: String?, context: Context?): String? { var path: String? = null // Get the real picture path through uri and selection val cursor: Cursor? = uri?.let { context?.contentResolver?.query(it, null, selection, null, null) } if (cursor != null) { if (cursor.moveToFirst()) { path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA)) } cursor.close() } return path } }
作者：码上夏雨
链接：https://juejin.cn/post/7023253760382091294