In this case, you do not need any physical devices and hardware to test and review the application, and you can easily check and test the operating system and application using the application environment simulator. Android SDK toolbox has Android Device Emulator simulation tools and software that can be used to simulate the application environment. Using this software, the user can easily simulate the application environment and operating system.AVDs allow you to simulate the environment of different types of applications without the need for hardware or device. Even if you have the necessary hardware and device, it is better to learn how to work with this simulator software . When using AVDs, the user determines the configuration of the virtual machine. Configuration includes screen resolution and density.You can even create multiple AVDs and run them simultaneously and in parallel. By doing this, you can also configure different devices at the same time.

Note:

You should note that if you stop the AVD while operating, it will cause the program to crash. It takes about 10 minutes for an app to launch and run for the first time, and about 3 minutes for newer devices.Once you have launched the AVD and come up, it is time to design and configure the GUI.

Android emulator shortcuts

The shortcuts for doing some things in Android emulator software are as follows:

- Alt + Enter:

Used to zoom in on Android emulator software.

- Ctrl + F11:

Used to change the screen orientation from landscape to portrait mode or vice versa.

- F8:

Used to turn the network on or off.

Android simulator speed optimization

When creating a simulator to simulate the application environment, two options are shown to you so that you can choose one of them. Snapshot and Use Host GPU options

Note:

You may think you can select both when a window appears to select two options. But in reality this is not the case and you can only choose one option. If you select both options, you will encounter an error message.

Snapshot:

If you select this option when creating the emulator, it will load at high speed for the second time you want to run the emulator and simulate the application environment . The high speed of loading the simulator for the second time is due to the fact that the first time all the necessary information and device modes are stored and there is no need for further review and processing.

Use Host GPU:

If this option is your choice when creating the emulator, the speed will increase significantly. Because AVD removes all the information from the graphics card on the host computer, it speeds it up.

Intel system image

You may want to run AVD with an image based on the ARM CPU and Intel CPI architecture. 

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