content uri로 만들기

FileProvider.getUriForFile(Context context, String authority, File file) 를 사용하자.

file : content uri 로 바꿀 file path

example code :

Uri uri  = FileProvider.getUriForFile(context, context.getApplicationContext().getPackageName(), file)

Intent intent = new Intent(ACTION_EXAMPLE, uri); 

intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); 

https://developer.android.com/reference/android/support/v4/content/FileProvider.html