Android内部和外部存储

Question

I have an app that accesses music and I had at least one user complain that some of his songs are on internal storage and that causes a force close.

My question is do I have to do 2 calls for each song now or can I make a query that will look at both the internal and external memory?

Answer 1

look at my answer in this post: https://stackoverflow.com/a/13935210/1716620

ContentProvider is the key

i have an application that use external and internal memory to save pictures and i needed to use gallery to view them in some rircumstance and it gave error if i tried to pass an uri that pointed to an internal memory

https://stackoverflow.com/a/13935210/1716620

that way i solved my problem... and your :)

Answer 2

Multimedia is not my strong suit, but I would think the media scanner would keep an index of what is where. Another option would be to look at startup where the media files are located and record this data in SharedPreferences for later use.

Answer 3

这取决于制造商如何实现其MediaProvider / Scanner等，因为对于多个闪存（SD）设备没有标准。