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570 Stars 165 Forks MIT License 669 Commits 21 Opened issues


A lightweight test input generator for Android. Similar to Monkey, but with more intelligence and cool features!

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DroidBot UTG



We added a new policy named

, which uses machine learning to automatically identify similar views and avoid redundant explorations. Please give it a try!

To use the

policy, you need pytorch and transformers installed. Use the command lines below:
pip install torch transformers

Then, start droidbot with the

-policy memory_guided
python -a  -o  -policy memory_guided -grant_perm -random


DroidBot is a lightweight test input generator for Android. It can send random or scripted input events to an Android app, achieve higher test coverage more quickly, and generate a UI transition graph (UTG) after testing.

A sample UTG is shown here.

DroidBot has the following advantages as compared with other input generators:

  1. It does not require system modification or app instrumentation;
  2. Events are based on a GUI model (instead of random);
  3. It is programmable (can customize input for certain UI);
  4. It can produce UI structures and method traces for analysis.


Li, Yuanchun, et al. "DroidBot: a lightweight UI-guided test input generator for Android." In Proceedings of the 39th International Conference on Software Engineering Companion (ICSE-C '17). Buenos Aires, Argentina, 2017.


  1. Python
    (both 2 and 3 are supported)
  2. Java
  3. Android SDK
  4. Add
    directory in Android SDK to
  5. (Optional)
    if you want to run DroidBot in cv mode.

How to install

Clone this repo and install with

git clone
cd droidbot/
pip install -e .

If successfully installed, you should be able to execute

droidbot -h

How to use

  1. Make sure you have:
+ `.apk` file path of the app you want to analyze.
+ A device or an emulator connected to your host machine via `adb`.
  1. Start DroidBot:

    droidbot -a  -o output_dir

    That's it! You will find much useful information, including the UTG, generated in the output dir.

+ If you are using multiple devices, you may need to use `-d ` to specify the target device. The easiest way to determine a device's serial number is calling `adb devices`.
+ On some devices, you may need to manually turn on accessibility service for DroidBot (required by DroidBot to get current view hierarchy).
+ If you want to test a large scale of apps, you may want to add `-keep_env` option to avoid re-installing the test environment every time.
+ You can also use a json-format script to customize input for certain states. Here are some [script samples](script_samples/). Simply use `-script ` to use DroidBot with a script.
+ If your apps do not support getting views through Accessibility (e.g., most games based on Cocos2d, Unity3d), you may find `-cv` option helpful.
+ You can use `-humanoid` option to let DroidBot communicate with [Humanoid]( in order to generate human-like test inputs.
+ You may find other useful features in `droidbot -h`.


We have conducted several experiments to evaluate DroidBot by testing apps with DroidBot and Monkey. The results can be found at DroidBot Posts. A sample evaluation report can be found here.


  1. AndroidViewClient
  2. Androguard
  3. The Honeynet project
  4. Google Summer of Code

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