Android (1)

Android(operating system developed by Google)
Android is a Linux -based free and open source operating system that is used primarily for mobile devices by Google and the Open Cell Alliance leadership and development. The Android platform consists of the operating system , middleware, user interface , and application software .

Comparison of the JVM and the Dalvik VM (virtual machine for Android)

DVM refers to DALIVK virtual machines. Each Android application runs in its own process and has a separate instance of the Dalvik virtual machine, and each DVM is a process in Linux.

Android Development Environment Building

Get SDK Toolkit

adt-bundle-windows-x86_64-20130522

Create an Android emulator

Avd:android Virtual Appliances

Ddms Introduction:

with command adb

Port number Occupation command:

Write the model of the analog phone (with Adb.exe)

If you want to not write the Adb.exe path in command cmd, you must configure the path under window

Then you can enter it directly in CMD.

Introduction to Android Project introduction

creating common errors encountered by the simulator

Life cycle of activity