一、设置文件格式
1、指定一种格式（如图片格式）
val intent = Intent(Intent.ACTION_GET_CONTENT)
intent.type = "image/*"
intent.addCategory(Intent.CATEGORY_OPENABLE)
startActivity(intent)2、指定多种格式（如图片和视频格式）
val intent = Intent(Intent.ACTION_GET_CONTENT)
intent.type = "*/*"
val mimeTypeList = arrayOf("image/*", "video/*")
intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypeList)
intent.addCategory(Intent.CATEGORY_OPENABLE)
startActivity(intent)| 文件后缀名 | mime类型 |
| ".3gp" | "video/3gpp" |
| ".apk" | "application/vnd.android.package-archive" |
| ".asf" | "video/x-ms-asf" |
| ".avi" | "video/x-msvideo" |
| ".bin" | "application/octet-stream" |
| ".bmp" | "image/bmp" |
| ".c" | "text/plain" |
| ".class" | "application/octet-stream" |
| ".conf" | "text/plain" |
| ".cpp" | "text/plain" |
| ".doc" | "application/msword" |
| ".docx" | "application/vnd.openxmlformats-officedocument.wordprocessingml.document" |
| ".xls" | "application/vnd.ms-excel" |
| ".xlsx" | "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" |
| ".exe" | "application/octet-stream" |
| ".gif" | "image/gif" |
| ".gtar" | "application/x-gtar" |
| ".gz" | "application/x-gzip" |
| ".h" | "text/plain" |
| ".htm" | "text/html" |
| ".html" | "text/html" |
| ".jar" | "application/java-archive" |
| ".java" | "text/plain" |
| ".jpeg" | "image/jpeg" |
| ".jpg" | "image/jpeg" |
| ".js" | "application/x-javascript" |
| ".log" | "text/plain" |
| ".m3u" | "audio/x-mpegurl" |
| ".m4a" | "audio/mp4a-latm" |
| ".m4b" | "audio/mp4a-latm" |
| ".m4p" | "audio/mp4a-latm" |
| ".m4u" | "video/vnd.mpegurl" |
| ".m4v" | "video/x-m4v" |
| ".mov" | "video/quicktime" |
| ".mp2" | "audio/x-mpeg" |
| ".mp3" | "audio/x-mpeg" |
| ".mp4" | "video/mp4" |
| ".mpc" | "application/vnd.mpohun.certificate" |
| ".mpe" | "video/mpeg" |
| ".mpeg" | "video/mpeg" |
| ".mpg" | "video/mpeg" |
| ".mpg4" | "video/mp4" |
| ".mpga" | "audio/mpeg" |
| ".msg" | "application/vnd.ms-outlook" |
| ".ogg" | "audio/ogg" |
| ".pdf" | "application/pdf" |
| ".png" | "image/png" |
| ".pps" | "application/vnd.ms-powerpoint" |
| ".ppt" | "application/vnd.ms-powerpoint" |
| ".pptx" | "application/vnd.openxmlformats-officedocument.presentationml.presentation" |
| ".prop" | "text/plain" |
| ".rc" | "text/plain" |
| ".rmvb" | "audio/x-pn-realaudio" |
| ".rtf" | "application/rtf" |
| ".sh" | "text/plain" |
| ".tar" | "application/x-tar" |
| ".tgz" | "application/x-compressed" |
| ".txt" | "text/plain" |
| ".wav" | "audio/x-wav" |
| ".wma" | "audio/x-ms-wma" |
| ".wmv" | "audio/x-ms-wmv" |
| ".wps" | "application/vnd.ms-works" |
| ".xml" | "text/plain" |
| ".z" | "application/x-compress" |
| ".zip" | "application/x-zip-compressed" |
二、设置文件多选
val intent = Intent(Intent.ACTION_GET_CONTENT)
intent.type = "image/*"
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)
intent.addCategory(Intent.CATEGORY_OPENABLE)
startActivity(intent)