最近写了个自定义相册模块，其中比较核心的算是查询照片了，直接上代码吧

val contentUri = MediaStore.Files.getContentUri("external")

val sortOrder = MediaStore.Files.FileColumns.DATE_MODIFIED + " DESC"

val selection =

"(${MediaStore.Files.FileColumns.MEDIA_TYPE} = ? OR ${MediaStore.Files.FileColumns.MEDIA_TYPE} = ?) AND ${MediaStore.MediaColumns.SIZE} > 0"

val selectionAllArgs = arrayOf(MediaStore.Files.FileColumns.MEDIA_TYPE_IMAGE.toString())

val projections = arrayOf(

MediaStore.Files.FileColumns._ID,

MediaStore.MediaColumns.DATA, MediaStore.MediaColumns.DISPLAY_NAME,

MediaStore.MediaColumns.DATE_MODIFIED, MediaStore.MediaColumns.MIME_TYPE,

MediaStore.MediaColumns.WIDTH, MediaStore.MediaColumns.HEIGHT,

MediaStore.MediaColumns.SIZE, MediaStore.Video.Media.DURATION

)

val cursor = context.contentResolver.query(contentUri, projections, selection, selectionAllArgs, sortOrder) ?: return

if (cursor.moveToFirst()) {

val idCol = cursor.getColumnIndex(MediaStore.MediaColumns._ID)

val pathCol = cursor.getColumnIndex(MediaStore.MediaColumns.DATA)

val nameCol = cursor.getColumnIndex(MediaStore.MediaColumns.DISPLAY_NAME)

val mimeType = cursor.getColumnIndex(MediaStore.MediaColumns.MIME_TYPE)

do {

val id = cursor.getString(idCol)

//这里得到path其实就可以利用glide来显示照片了，但还是建议用uri

val path = cursor.getString(pathCol)

val name = cursor.getString(nameCol)

val type = cursor.getString(mimeType)

//过滤gif

if (name.endsWith(".gif", true)) {

continue

}

//过滤视频

if (type.contains("video")) {

continue

}

val file = File(path)

if (!file.exists() || !file.isFile) {

continue

}

//这里拿到uri

val uri = Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, id)

//这里可以对照片进行分类操作，

...

} while (cursor.moveToNext())

}

cursor.close()

数据库查询要放到工作线程处理，而且别忘了申请外部存储读写权限