共享图片和视频时，Android中的Content：//和File：//

Question

Both these are used by different apps. Facebook shared with File Uris and Whatsapp with Content Uris. If my app can share Videos and pictures, which one should I use?

Also, if my app should accept videos and pictures, for which type should I be prepared? And if for both, should I convert the Content URI into a File Uri or the other way around?

Answer 1

If my app can share Videos and pictures, which one should I use?

On Android 7.0+, you have little choice but to share using a content Uri , such as from FileProvider .

On Android 6.0 and older, if the content is on internal storage, you also have to use FileProvider , as third-party apps have no access to your portion of internal storage. If the content is on external storage, you could use either file or content . The older the device, the more likely it is that pre-installed apps will only support file .

if my app should accept videos and pictures, for which type should I be prepared?

Ideally, both. If by "accept" you mean via ACTION_SEND , you have no choice but to support both. For ACTION_VIEW and Intent actions like it, where the data facet of an Intent is used for the Uri , use the <data> element to advertise which scheme(s) you support.

should I convert the Content URI into a File Uri or the other way around?

Neither. You consume the content from its original source. A ContentProvider supports both schemes, for things like getType() and openInputStream() .