查询本地图片资源

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val mImageUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI
val mContentResolver = contentResolver
val cursor: Cursor?
val projection = arrayOf(
    MediaStore.MediaColumns._ID,
    MediaStore.MediaColumns.DATA,
    MediaStore.MediaColumns.DISPLAY_NAME,
    MediaStore.MediaColumns.DATE_MODIFIED
)
//只查询jpeg和png的图片
cursor = mContentResolver.query(
    mImageUri, projection,
    MediaStore.MediaColumns.MIME_TYPE + "=? or " + MediaStore.MediaColumns.MIME_TYPE + "=?",
    arrayOf("image/jpeg", "image/png"), MediaStore.MediaColumns.DATE_MODIFIED
)
if (cursor != null) {
    val columnIndexId = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns._ID)
    val columnIndexData = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA)
    val columnIndexName = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DISPLAY_NAME)
    val columnIndexDate =
        cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATE_MODIFIED)
    while (cursor.moveToNext()) {
        val imageId = cursor.getLong(columnIndexId)
        val uriImage = ContentUris.withAppendedId(mImageUri, imageId)
        val filePath = cursor.getString(columnIndexData)
        val fileName = cursor.getString(columnIndexName)
        val datetime = cursor.getLong(columnIndexDate)
        listOfAllImages.add(AlarmImage(uriImage, filePath, fileName, datetime))
    }
    cursor.close()
}