What did Android stduio do when starting the simulator to run the project

Every time Android studio opens the simulator to run the project, the project will be built. What is the construction process like? You don't need to understand the in-depth principle, just know what steps it takes after run, as shown in the figure below. After the success of buiId, we will install the app. The success of buiId does not mean the success of install, but the success of install must be the success of build. After the installation is successful, the app may not run normally. There may be flash back, black screen or failure to open. At this time, you can enumerate all possible errors, and then go back to the interrupt point in turn to check the code logic.