If you're getting this error when running `make example_android`:
```
Ambiguous method overloading for method java.io.File#<init>.
Cannot resolve which method to invoke for [null, class java.lang.String] due to overlapping prototypes between:
[class java.lang.String, class java.lang.String]
[class java.io.File, class java.lang.String]
```
Adding the ANDROID_HOME environment variable may fix this error, as mentioned in the following issue: [https://github.com/dropbox/djinni/issues/44](https://github.com/dropbox/djinni/issues/44)
Try adding the following line to `~/.bash_profile` (below is the homebrew SDK path, your path may be different):