Designing for a native Android app is different from designing a mobile web experience. There are specific guidelines and components used within the Android system. Read over Google's Material Design for more clarification.
You can download Android kits to incorporate existing Android design elements in your work.
Screen Sizes & Density Pixel (dp)
- There are many, many Android phones and they all vary in size. To achieve this goal you have to switch from px to density-independent pixels (dp or dip) as a unit of measurement.
- dp is Android's natural pixels and it's similar to pixels (iOS)
- Formula to convert px to dp: px = dp×(dpi/160)
- Dpi = ppi = pixels per inch
- The generally accepted size is 360dp х 640dp, and you can start your design with this size and scale up/down
Special Design Components (not found in iOS)
- Backdrop - selections in the backdrop with the current screen in front
