Gmail attachment and custom extension
问题 I work currently on an Android application that read file with a custom extension. One of the mandatory features, is that the app must be proposed by gmail when the user receive a mail with the attachment .ourextension. I did some research, and found that gmail client on Android doesn't rely on the extension, because in the data of the launched intent the file proposed has no extension. It only rely on the mime-type given by the mail client. The problem is that our custom file are not