PdDroidParty is an open source Android app you can use to run your Pure Data patches on Android. Simply copy your Pd patch onto your device's storage. You get a list of all of the Pure Data projects on your device's storage and you simply select the one you want to run.
The way it works is you create a special patch called droidparty_main.pd in your project folder and then copy the whole folder onto your device storage. PdDroidParty will show you a list of all of the folders containing a droidparty_main.pd file and when you choose one the patch will be loaded. When you run the droidparty_main.pd patch the user interface will be emulated by PdDroidParty and can be themed with SVG widgets.
See the documentation link for more information on getting started, or copy one of the demos to your device to get started.
You can also create a native Android app from your Pd patch using PdDroidParty. More information is available at the website.