Hello everyone! I tried to get mp3 files from Android storage. Using LFS extension I can get folders and subfolders, but I can’t get any files.
I need to get files and play it using miniaudio.h. It works corrent in Windows – I use IFileOpenDialog to get folder and LFS to get mp3 files. After that I use the paths to files to play them with miniaudio.h.
For android I wanted to use Java file dialog with Intent.ACTION_OPEN_DOCUMENT_TREE. I tried to create c++ native extension, i used jni to run java code (it was in a example android extension from manual). But I had a problem with startActivityForResult – I couldn’t start new Intent(context, GetFileActivity.class). (But if use only java class, not Activity, java code works. I could start startActivity but can`t get files uri or their real paths.) After that I thought that it is not allowed to start Activity in the Defold and tried to create my own open file dialog using LFS extension. It works, but i can get only directories, not files. How can I get files? Maybe I have to do something else?
My current code which uses LFS, without c++ extension and java:
local start_dir="/storage/emulated/0"
local funs={}
funs.current_dir="/storage/emulated/0"
function funs.change_dir(is_in, name)
if is_in then
funs.current_dir=funs.current_dir .. "/" .. name
else
if funs.current_dir~=start_dir then
funs.current_dir=funs.current_dir:match("(.*)/")
end
end
end
function funs.print_dir()
iter, dir_obj = lfs.dir(funs.current_dir)
local dir_array={}
if dir_obj then
local filename = dir_obj:next()
while filename do
local name=tostring(filename)
local attr = lfs.attributes(funs.current_dir .. "/" .. name)
if attr then
if attr.mode == "directory" and name~= "." and name~=".." then
table.insert(dir_array, name)
end
end
filename = dir_obj:next()
end
end
return dir_array
end
return {
funs = funs
}
This code works, I can get directories. But here I can’t see files, not mp3, png and others, even if I remove attr.mode == "directory"
After that I use:
local dir=funs.current_dir
local iter, dir_obj = lfs.dir(dir)
self.for_music.funs.set_music_files(dir_obj)
But self.for_music.funs.set_music_files(dir_obj) has a problem. It has to create a table which contains all audio files in directory, but it is empty.self.for_music.funs.set_music_files(dir_obj) code:
function funs.set_music_files(dir_obj)
if dir_obj then
musics_info={}
funs.current_track=1
local filename = dir_obj:next()
while filename do
local name=tostring(filename)
local extension = string.match(name, "%.([^%.]+)$") or ""
if extension=="mp3" then
table.insert(musics_info, filename)
end
filename = dir_obj:next()
end
end
end
I found out that the problem is local filename = dir_obj:next(). It returns nil, even if files exists in this directory. In windows it returns files correctly, so I thought that this is because of permission. But In one of my extensions I have following AndroidManifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="{{android.package}}">
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
</manifest>
So I think I have permissions? Maybe there is no way to get files? Thanks in advance for your help!!!
