However, Blogger's Android app is really basic and does not offer too many features. Editing of existing post is not possible. The editor offered only lets you enter text and include one or more photos. You can add some labels and geotag your posts, taking advantage of your phone's GPS. There is an option to save a post as a draft, but you won't be able to publish it from a computer because it's only saved locally.
If you are already on the new Android marketplace (market.android.com), just click on https://market.android.com/details?id=com.google.android.apps.blogger and then choose install would invoke an automatic installation on your Android phone. In other words, QR Code is not required anymore (but I shall provide it as below anyway).
|QR Code - Blogger mobile app for Android|
Android Market link: Blogger's app.
Introducing Blogger Android App [via]