1. Monkey test == stress test; MonkeyRunner == automated test
2. The Monkey tool runs directly in the adb shell of the device or emulator to generate pseudo-random events for the user or system
3. The MonkeyRunner tool controls the device or simulator through specific commands and events defined by the API on the workstation. That is, what can be operated on the simulator, MonkeyRunner can be operated, and can be recorded and played back