问题
Is it possible to get a device to open a file on disk using the MIDlet.platformRequest(String url) method? I was hoping to use the following:
midlet.platformRequest("file:///path/to/file/file.png");
But this just throws a ConnectionNotFound exception. I'm specifically using the BlackBerry platform, but I do not have access to the proprietary BlackBerry API. File could be of any type, so obviously I'm not expecting it to handle every one.
Cheers
回答1:
No, it is not possible to open arbitrary files using platform request. MIDP 2.0 requires devices to support platform request only for URL and tel: connections. All other schemes are optional and device dependent.
Nokia S60 phones seems to support file:// as pointed out in forum Nokia. But you need to verify for other platforms including Blackberry.
You can look at JSR211 Content Handler API as an alternative. I believe it is supported in newer Blackberry devices.
来源：https://stackoverflow.com/questions/286855/open-file-with-midlet-platformrequest