To use this app, create
apistore.properties
outside project directory.
Content of the file must be looking like this
apiKey=xxxx_here_comes_your_key_xxxxx
OR
Replace line 20 in /app/build.gradle
buildConfigField('String', 'API_KEY', '"' + apiProperties['apiKey'] + '"')
with this
buildConfigField('String', 'API_KEY', '"#HERE_IS_YOUR_API_KEY#"')