Getting Started with Android

. Android system features and platform architecture system features:

• Application Framework supports reuse and substitution of components (the app is published with the framework's conventions, and other apps can use the module)
• Dalvik virtual machines: Optimized for mobile devices-integrated Browser: Open source WebKit engine
• SQLite Structured data storage
• Optimized graphics library, multimedia support, GSM phone technology, Bluetooth, etc.
• Build with Software overlay method

Platform Architecture diagram:

Analysis of related terms

1. Dalvik: Android-specific virtual machines, unlike JVMs, Dalvik virtual machines are ideal for use on mobile devices!
2. AVD: (Android virtual machine): Android emulator
3. ADT: (Android development tools) Android development tool
4. SDK: (software development Kit) Software Development Kit is a collection of tools such as Android, platform architecture, etc., such as Adb.exe
5. DDMS: (Dalvik Debug Monitor Service) Android debugging tool
6. adb: Android Debug Bridge, in the SDK Platform-tools directory, a lot of features, command line prerequisites
7. DX tool: Convert. class to. dex files
8. AAPT: (Android Asset packing tool), Android resource packaging tools
9. R.java files: automatically generated by the AAPT tool according to the resource files in the app, can be understood as a resource dictionary
10. Androidmanifest.xml:App Package name + Component Declaration + Program compatible minimum version + required permissions etc program configuration file

Getting Started with Android