Where to put own properties file in an android project created with Android Studio?

By default assets folder is placed in src/main/assets, if it does not exists create it.

Then you can access the file using something like this:

getBaseContext().getAssets().open("app.properties")

You can find more info about Gradle Android project structure here.

Create a subfolder in your main folder and name it assets. Place all your .properties files in this(assets) folder.

src->main->assets->mydetails.properties

You can access it using AssetManager class

public class MainActivity extends ActionBarActivity {

TextView textView;
private PropertyReader propertyReader;
private Context context;
private Properties properties;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    context=this;
    propertyReader = new PropertyReader(context);
    properties = propertyReader.getMyProperties("mydetails.properties");
    textView = (TextView)findViewById(R.id.text);
    textView.setText(properties.getProperty("Name"));
    Toast.makeText(context, properties.getProperty("Designation"), Toast.LENGTH_LONG).show();
    }
}


public class PropertyReader {

private Context context;
private Properties properties;

public PropertyReader(Context context){
    this.context=context;
    properties = new Properties();
}

public Properties getMyProperties(String file){
    try{
        AssetManager assetManager = context.getAssets();
        InputStream inputStream = assetManager.open(file);
        properties.load(inputStream);

    }catch (Exception e){
        System.out.print(e.getMessage());
    }

    return properties;
    }
}

You can create your asset subfolder in your main folder and then insert the .properties file in it.

Then, create a class to open and read the file, for example:

public class PropertiesReader { 

 private Context context;
 private Properties properties;
 public PropertiesReader(Context context) { 
  this.context = context;
   //creates a new object ‘Properties’
   properties = new Properties();

   public Properties getProperties(String FileName) {
   try {    
    //access to the folder ‘assets’ 
    AssetManager am = context.getAssets(); 
    //opening the file    
    InputStream inputStream = am.open(FileName); 
    //loading of the properties 
    properties.load(inputStream);
   } 
   catch (IOException e) { 
    Log.e("PropertiesReader",e.toString());
   }
  }
  return properties;
 } 
}

For more information, see http://pillsfromtheweb.blogspot.it/2014/09/properties-file-in-android.html