How to move my Realm file in SD card?

问题

How to move my Realm file in SD card?

And not just move, but also to connect to my application?

回答1:

Realm also has constructors for opening any file: http://realm.io/docs/java/0.80.0/api/io/realm/Realm.html#getInstance-java.io.File-java.lang.String-

So something like this should work:

Realm realm = Realm.getInstance(Environment.getExternalStorageDirectory());

And remember to add this to your manifest:

<manifest ...>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    ...
</manifest>

Also not all phones has a SD card and it might not be mounted so you will need additional checks for that if you don't want to encounter lots of weird crashes in production: http://developer.android.com/guide/topics/data/data-storage.html#filesExternal

来源：https://stackoverflow.com/questions/29551664/how-to-move-my-realm-file-in-sd-card