(Open source mobile phone operating system based on Linux platform, which includes an operating system. This course is the main lecture, The main contents of the full course are as follows: 1. How to install the Android SDK and Eclipse plug-in 2. Develop the first Android for use 3. Android uses the program architecture 4. Develop and use the telephone dialer 5. Display units in Android 6. "Not registered with the network" Solution to error messages 7. Making of SMS senders 8. Unit testing of Android usage 9. Data storage and access Many times your software needs to store or re access the managed data. A.......)