I have successfully used the method CCFileUtils::sharedFileUtils()>getWritablePath in ios, and it works like a charm, however, on Android it always returns an empty string and hence I get a SIGSEGV when I try to write anything.
I have checked the permissions WRITE_EXTERNAL_STORAGE is present in the manifest.
I have also tried to put in logs in the Cocos2dxHelper.java - the init is done, but on requesting writablePath, it never hits the getCocos2dxWritablePath().
Could someone help me out please? I am stuck at this for so long now!
Dawid, yes, /sdcard works, but cocos2d-x being cross platform should ideally be taking care of this.
Not that I am complaining (I love cocos2d-x!), but I would like to know if there is any setting or method that I need to call before hand so that I can use (or any other method in place of getWritablePath() which would work on both Android and iOS.
What version are you using?
Are you calling it from a different thread?
I’m using 2.1.4 and the only instance where I got the same problem is when I called getWritablePath() on a separate thread.
Oh yes Lance! Good Catch
I am calling it from a different thread - never even thought about it (since it always worked on iOS). I have not tried it out yet, but I think things should work fine if I can pass the path from the thread creator as file write permissions are same for all threads? (Or do you think write permissions are thread specific in general?)
What I did was (kinda hacky, though) save the value on a variable before starting the thread, then whenever I need getWritablePath(), I use the variable instead. The path returned won’t change anyway, lol.
I’m not sure the same will work for me, as I have multiple threads doing the same thing (making use of max simultaneous connections to a host :) ). I will however try to pass it as arguments during creation of thread .
Also, on a side note I would like to know why this wouldn’t work inside a different thread - I know for sure that jni functions can be called in all threads, and though extending CCObject, its not performing any OpenGL actions, so ideally it should pass….
I had the save problem, because I use CCFileUtils::sharedFileUtils()->getWritablePath() in another thread.
It works on ios but it does not work on android;
My solution is:
when app launch, in the main thread, you use CCFileUtils::sharedFileUtils()->getWriteablePath() to get the path,
then you can re-code the method libs/cocos2dx/platform/android/CCFileUtils.cpp, like this:
string CCFileUtils::getWriteablePath()
{
if (m_strWriteable.compare(“”) == 0)
{
//android c++ code to get the WriteablePath
m_strWriteablePath = “XXXXXXXXXXX”;
}
return m_strWritablePath;
}
Then you can use CCFileUtils::sharedFileUtils()->getWritablePath() in any time, any thread.
hope it work, but sorry for my poor english _
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Yep, we should save the writable path at beginning.
#2449 is created for it.
